
#if 0
#define XCACHE_DEBUG
#endif

#if 0
#define SHOW_DPRINT
#endif

/* {{{ macros */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include <signal.h>

#include "php.h"
#include "ext/standard/info.h"
#include "ext/standard/md5.h"
#include "ext/standard/php_math.h"
#include "zend_extensions.h"
#include "SAPI.h"

#include "xcache.h"
#ifdef ZEND_ENGINE_2_1
#include "ext/date/php_date.h"
#endif
#include "optimizer.h"
#include "coverager.h"
#include "disassembler.h"
#include "align.h"
#include "stack.h"
#include "xcache_globals.h"
#include "processor.h"
#include "const_string.h"
#include "opcode_spec.h"
#include "utils.h"

#define VAR_ENTRY_EXPIRED(pentry) ((pentry)->ttl && XG(request_time) > pentry->ctime + (pentry)->ttl)
#define CHECK(x, e) do { if ((x) == NULL) { zend_error(E_ERROR, "XCache: " e); goto err; } } while (0)
#define LOCK(x) xc_lock(x->lck)
#define UNLOCK(x) xc_unlock(x->lck)

#define ENTER_LOCK_EX(x) \
	xc_lock(x->lck); \
	zend_try { \
		do
#define LEAVE_LOCK_EX(x) \
		while (0); \
	} zend_catch { \
		catched = 1; \
	} zend_end_try(); \
	xc_unlock(x->lck)

#define ENTER_LOCK(x) do { \
	int catched = 0; \
	ENTER_LOCK_EX(x)
#define LEAVE_LOCK(x) \
	LEAVE_LOCK_EX(x); \
	if (catched) { \
		zend_bailout(); \
	} \
} while(0)

/* }}} */

/* {{{ globals */
static char *xc_shm_scheme = NULL;
static char *xc_mmap_path = NULL;
static char *xc_coredump_dir = NULL;

static xc_hash_t xc_php_hcache = {0};
static xc_hash_t xc_php_hentry = {0};
static xc_hash_t xc_var_hcache = {0};
static xc_hash_t xc_var_hentry = {0};

static zend_ulong xc_php_ttl    = 0;
static zend_ulong xc_var_maxttl = 0;

enum { xc_deletes_gc_interval = 120 };
static zend_ulong xc_php_gc_interval = 0;
static zend_ulong xc_var_gc_interval = 0;

/* total size */
static zend_ulong xc_php_size  = 0;
static zend_ulong xc_var_size  = 0;

static xc_cache_t **xc_php_caches = NULL;
static xc_cache_t **xc_var_caches = NULL;

static zend_bool xc_initized = 0;
static time_t xc_init_time = 0;
static long unsigned xc_init_instance_id = 0;
#ifdef ZTS
static long unsigned xc_init_instance_subid = 0;
#endif
static zend_compile_file_t *origin_compile_file = NULL;
static zend_compile_file_t *old_compile_file = NULL;
static zend_llist_element  *xc_llist_zend_extension = NULL;

static zend_bool xc_test = 0;
static zend_bool xc_readonly_protection = 0;

zend_bool xc_have_op_array_ctor = 0;

static zend_bool xc_module_gotup = 0;
static zend_bool xc_zend_extension_gotup = 0;
static zend_bool xc_zend_extension_faked = 0;
#if !COMPILE_DL_XCACHE
#	define zend_extension_entry xcache_zend_extension_entry
#endif
ZEND_DLEXPORT zend_extension zend_extension_entry;
ZEND_DECLARE_MODULE_GLOBALS(xcache);
/* }}} */

/* any function in *_dmz is only safe be called within locked(single thread) area */

static inline int xc_entry_equal_dmz(xc_entry_t *a, xc_entry_t *b) /* {{{ */
{
	/* this function isn't required but can be in dmz */

	if (a->type != b->type) {
		return 0;
	}
	switch (a->type) {
		case XC_TYPE_PHP:
#ifdef HAVE_INODE
			do {
				xc_entry_data_php_t *ap = a->data.php;
				xc_entry_data_php_t *bp = b->data.php;
				if (ap->inode) {
					return ap->inode == bp->inode
						&& ap->device == bp->device;
				}
			} while(0);
#endif
			/* fall */

		case XC_TYPE_VAR:
			do {
#ifdef IS_UNICODE
				if (a->name_type == IS_UNICODE) {
					if (a->name.ustr.len != b->name.ustr.len) {
						return 0;
					}
					return memcmp(a->name.ustr.val, b->name.ustr.val, (a->name.ustr.len + 1) * sizeof(UChar)) == 0;
				}
#endif
				if (a->name.str.len != b->name.str.len) {
					return 0;
				}
				return memcmp(a->name.str.val, b->name.str.val, a->name.str.len + 1) == 0;

			} while(0);
		default:
			assert(0);
	}
	return 0;
}
/* }}} */
static inline int xc_entry_has_prefix_dmz(xc_entry_t *entry, zval *prefix) /* {{{ */
{
	/* this function isn't required but can be in dmz */

	switch (entry->type) {
		case XC_TYPE_PHP:
		case XC_TYPE_VAR:
			do {
#ifdef IS_UNICODE
				if (entry->name_type != prefix->type) {
					return 0;
				}

				if (entry->name_type == IS_UNICODE) {
					if (entry->name.ustr.len < Z_USTRLEN_P(prefix)) {
						return 0;
					}
					return memcmp(entry->name.ustr.val, Z_USTRVAL_P(prefix), Z_USTRLEN_P(prefix) * sizeof(UChar)) == 0;
				}
#endif
				if (prefix->type != IS_STRING) {
					return 0;
				}

				if (entry->name.str.len < Z_STRLEN_P(prefix)) {
					return 0;
				}

				return memcmp(entry->name.str.val, Z_STRVAL_P(prefix), Z_STRLEN_P(prefix)) == 0;

			} while(0);
		default:
			assert(0);
	}
	return 0;
}
/* }}} */
static void xc_entry_free_real_dmz(volatile xc_entry_t *xce) /* {{{ */
{
	xce->cache->mem->handlers->free(xce->cache->mem, (xc_entry_t *)xce);
}
/* }}} */
static void xc_entry_add_dmz(xc_entry_t *xce) /* {{{ */
{
	xc_entry_t **head = &(xce->cache->entries[xce->hvalue]);
	xce->next = *head;
	*head = xce;
	xce->cache->entries_count ++;
}
/* }}} */
static xc_entry_t *xc_entry_store_dmz(xc_entry_t *xce TSRMLS_DC) /* {{{ */
{
	xc_entry_t *stored_xce;

	xce->hits  = 0;
	xce->ctime = XG(request_time);
	xce->atime = XG(request_time);
	stored_xce = xc_processor_store_xc_entry_t(xce TSRMLS_CC);
	if (stored_xce) {
		xc_entry_add_dmz(stored_xce);
		return stored_xce;
	}
	else {
		xce->cache->ooms ++;
		return NULL;
	}
}
/* }}} */
static void xc_entry_free_dmz(xc_entry_t *xce TSRMLS_DC) /* {{{ */
{
	xce->cache->entries_count --;
	if (xce->refcount == 0) {
		xc_entry_free_real_dmz(xce);
	}
	else {
		xce->next = xce->cache->deletes;
		xce->cache->deletes = xce;
		xce->dtime = XG(request_time);
		xce->cache->deletes_count ++;
	}
	return;
}
/* }}} */
static void xc_entry_remove_dmz(xc_entry_t *xce TSRMLS_DC) /* {{{ */
{
	xc_entry_t **pp = &(xce->cache->entries[xce->hvalue]);
	xc_entry_t *p;
	for (p = *pp; p; pp = &(p->next), p = p->next) {
		if (xc_entry_equal_dmz(xce, p)) {
			/* unlink */
			*pp = p->next;
			xc_entry_free_dmz(xce TSRMLS_CC);
			return;
		}
	}
	assert(0);
}
/* }}} */
static xc_entry_t *xc_entry_find_dmz(xc_entry_t *xce TSRMLS_DC) /* {{{ */
{
	xc_entry_t *p;
	for (p = xce->cache->entries[xce->hvalue]; p; p = p->next) {
		if (xc_entry_equal_dmz(xce, p)) {
			if (p->type == XC_TYPE_VAR || /* PHP */ (p->data.php->mtime == xce->data.php->mtime && p->data.php->sourcesize == xce->data.php->sourcesize)) {
				p->hits ++;
				p->atime = XG(request_time);
				return p;
			}
			else {
				xc_entry_remove_dmz(p TSRMLS_CC);
				return NULL;
			}
		}
	}
	return NULL;
}
/* }}} */
static void xc_entry_hold_php_dmz(xc_entry_t *xce TSRMLS_DC) /* {{{ */
{
	TRACE("hold %s", xce->name.str.val);
	xce->refcount ++;
	xc_stack_push(&XG(php_holds)[xce->cache->cacheid], (void *)xce);
}
/* }}} */
#if 0
static void xc_entry_hold_var_dmz(xc_entry_t *xce TSRMLS_DC) /* {{{ */
{
	xce->refcount ++;
	xc_stack_push(&XG(var_holds)[xce->cache->cacheid], (void *)xce);
}
/* }}} */
#endif
static inline zend_uint advance_wrapped(zend_uint val, zend_uint count) /* {{{ */
{
	if (val + 1 >= count) {
		return 0;
	}
	return val + 1;
}
/* }}} */
static void xc_counters_inc(time_t *curtime, zend_uint *curslot, time_t period, zend_ulong *counters, zend_uint count TSRMLS_DC) /* {{{ */
{
	time_t n = XG(request_time) / period;
	if (*curtime != n) {
		zend_uint target_slot = n % count;
		if (n - *curtime > period) {
			memset(counters, 0, sizeof(counters[0]) * count);
		}
		else {
			zend_uint slot;
			for (slot = advance_wrapped(*curslot, count);
					slot != target_slot;
					slot = advance_wrapped(slot, count)) {
				counters[slot] = 0;
			}
			counters[target_slot] = 0;
		}
		*curtime = n;
		*curslot = target_slot;
	}
	counters[*curslot] ++;
}
/* }}} */
static void xc_cache_hit_dmz(xc_cache_t *cache TSRMLS_DC) /* {{{ */
{
	cache->hits ++;

	xc_counters_inc(&cache->hits_by_hour_cur_time
			, &cache->hits_by_hour_cur_slot, 60 * 60
			, cache->hits_by_hour
			, sizeof(cache->hits_by_hour) / sizeof(cache->hits_by_hour[0])
			TSRMLS_CC);

	xc_counters_inc(&cache->hits_by_second_cur_time
			, &cache->hits_by_second_cur_slot
			, 1
			, cache->hits_by_second
			, sizeof(cache->hits_by_second) / sizeof(cache->hits_by_second[0])
			TSRMLS_CC);
}
/* }}} */

/* helper function that loop through each entry */
#define XC_ENTRY_APPLY_FUNC(name) int name(xc_entry_t *entry TSRMLS_DC)
typedef XC_ENTRY_APPLY_FUNC((*cache_apply_dmz_func_t));
static void xc_entry_apply_dmz(xc_cache_t *cache, cache_apply_dmz_func_t apply_func TSRMLS_DC) /* {{{ */
{
	xc_entry_t *p, **pp;
	int i, c;

	for (i = 0, c = cache->hentry->size; i < c; i ++) {
		pp = &(cache->entries[i]);
		for (p = *pp; p; p = *pp) {
			if (apply_func(p TSRMLS_CC)) {
				/* unlink */
				*pp = p->next;
				xc_entry_free_dmz(p TSRMLS_CC);
			}
			else {
				pp = &(p->next);
			}
		}
	}
}
/* }}} */

#define XC_CACHE_APPLY_FUNC(name) void name(xc_cache_t *cache TSRMLS_DC)
/* call graph:
 * xc_gc_expires_php -> xc_gc_expires_one -> xc_entry_apply_dmz -> xc_gc_expires_php_entry_dmz
 * xc_gc_expires_var -> xc_gc_expires_one -> xc_entry_apply_dmz -> xc_gc_expires_var_entry_dmz
 */
static XC_ENTRY_APPLY_FUNC(xc_gc_expires_php_entry_dmz) /* {{{ */
{
	TRACE("ttl %lu, %lu %lu", (zend_ulong) XG(request_time), (zend_ulong) entry->atime, xc_php_ttl);
	if (XG(request_time) > entry->atime + xc_php_ttl) {
		return 1;
	}
	return 0;
}
/* }}} */
static XC_ENTRY_APPLY_FUNC(xc_gc_expires_var_entry_dmz) /* {{{ */
{
	if (VAR_ENTRY_EXPIRED(entry)) {
		return 1;
	}
	return 0;
}
/* }}} */
static void xc_gc_expires_one(xc_cache_t *cache, zend_ulong gc_interval, cache_apply_dmz_func_t apply_func TSRMLS_DC) /* {{{ */
{
	TRACE("interval %lu, %lu %lu", (zend_ulong) XG(request_time), (zend_ulong) cache->last_gc_expires, gc_interval);
	if (XG(request_time) - cache->last_gc_expires >= gc_interval) {
		ENTER_LOCK(cache) {
			if (XG(request_time) - cache->last_gc_expires >= gc_interval) {
				cache->last_gc_expires = XG(request_time);
				xc_entry_apply_dmz(cache, apply_func TSRMLS_CC);
			}
		} LEAVE_LOCK(cache);
	}
}
/* }}} */
static void xc_gc_expires_php(TSRMLS_D) /* {{{ */
{
	int i, c;

	if (!xc_php_ttl || !xc_php_gc_interval || !xc_php_caches) {
		return;
	}

	for (i = 0, c = xc_php_hcache.size; i < c; i ++) {
		xc_gc_expires_one(xc_php_caches[i], xc_php_gc_interval, xc_gc_expires_php_entry_dmz TSRMLS_CC);
	}
}
/* }}} */
static void xc_gc_expires_var(TSRMLS_D) /* {{{ */
{
	int i, c;

	if (!xc_var_gc_interval || !xc_var_caches) {
		return;
	}

	for (i = 0, c = xc_var_hcache.size; i < c; i ++) {
		xc_gc_expires_one(xc_var_caches[i], xc_var_gc_interval, xc_gc_expires_var_entry_dmz TSRMLS_CC);
	}
}
/* }}} */

static XC_CACHE_APPLY_FUNC(xc_gc_delete_dmz) /* {{{ */
{
	xc_entry_t *p, **pp;

	pp = &cache->deletes;
	for (p = *pp; p; p = *pp) {
		if (XG(request_time) - p->dtime > 3600) {
			p->refcount = 0;
			/* issue warning here */
		}
		if (p->refcount == 0) {
			/* unlink */
			*pp = p->next;
			cache->deletes_count --;
			xc_entry_free_real_dmz(p);
		}
		else {
			pp = &(p->next);
		}
	}
}
/* }}} */
static XC_CACHE_APPLY_FUNC(xc_gc_deletes_one) /* {{{ */
{
	if (cache->deletes && XG(request_time) - cache->last_gc_deletes > xc_deletes_gc_interval) {
		ENTER_LOCK(cache) {
			if (cache->deletes && XG(request_time) - cache->last_gc_deletes > xc_deletes_gc_interval) {
				cache->last_gc_deletes = XG(request_time);
				xc_gc_delete_dmz(cache TSRMLS_CC);
			}
		} LEAVE_LOCK(cache);
	}
}
/* }}} */
static void xc_gc_deletes(TSRMLS_D) /* {{{ */
{
	int i, c;

	if (xc_php_caches) {
		for (i = 0, c = xc_php_hcache.size; i < c; i ++) {
			xc_gc_deletes_one(xc_php_caches[i] TSRMLS_CC);
		}
	}

	if (xc_var_caches) {
		for (i = 0, c = xc_var_hcache.size; i < c; i ++) {
			xc_gc_deletes_one(xc_var_caches[i] TSRMLS_CC);
		}
	}
}
/* }}} */

/* helper functions for user functions */
static void xc_fillinfo_dmz(int cachetype, xc_cache_t *cache, zval *return_value TSRMLS_DC) /* {{{ */
{
	zval *blocks, *hits;
	int i;
	const xc_block_t *b;
#ifndef NDEBUG
	xc_memsize_t avail = 0;
#endif
	xc_mem_t *mem = cache->mem;
	const xc_mem_handlers_t *handlers = mem->handlers;
	zend_ulong interval;
	if (cachetype == XC_TYPE_PHP) {
		interval = xc_php_ttl ? xc_php_gc_interval : 0;
	}
	else {
		interval = xc_var_gc_interval;
	}

	add_assoc_long_ex(return_value, ZEND_STRS("slots"),     cache->hentry->size);
	add_assoc_long_ex(return_value, ZEND_STRS("compiling"), cache->compiling);
	add_assoc_long_ex(return_value, ZEND_STRS("misses"),    cache->misses);
	add_assoc_long_ex(return_value, ZEND_STRS("hits"),      cache->hits);
	add_assoc_long_ex(return_value, ZEND_STRS("clogs"),     cache->clogs);
	add_assoc_long_ex(return_value, ZEND_STRS("ooms"),      cache->ooms);
	add_assoc_long_ex(return_value, ZEND_STRS("errors"),    cache->errors);

	add_assoc_long_ex(return_value, ZEND_STRS("cached"),    cache->entries_count);
	add_assoc_long_ex(return_value, ZEND_STRS("deleted"),   cache->deletes_count);
	if (interval) {
		time_t gc = (cache->last_gc_expires + interval) - XG(request_time);
		add_assoc_long_ex(return_value, ZEND_STRS("gc"),    gc > 0 ? gc : 0);
	}
	else {
		add_assoc_null_ex(return_value, ZEND_STRS("gc"));
	}
	MAKE_STD_ZVAL(hits);
	array_init(hits);
	for (i = 0; i < sizeof(cache->hits_by_hour) / sizeof(cache->hits_by_hour[0]); i ++) {
		add_next_index_long(hits, (long) cache->hits_by_hour[i]);
	}
	add_assoc_zval_ex(return_value, ZEND_STRS("hits_by_hour"), hits);

	MAKE_STD_ZVAL(hits);
	array_init(hits);
	for (i = 0; i < sizeof(cache->hits_by_second) / sizeof(cache->hits_by_second[0]); i ++) {
		add_next_index_long(hits, (long) cache->hits_by_second[i]);
	}
	add_assoc_zval_ex(return_value, ZEND_STRS("hits_by_second"), hits);

	MAKE_STD_ZVAL(blocks);
	array_init(blocks);

	add_assoc_long_ex(return_value, ZEND_STRS("size"),  handlers->size(mem));
	add_assoc_long_ex(return_value, ZEND_STRS("avail"), handlers->avail(mem));
	add_assoc_bool_ex(return_value, ZEND_STRS("can_readonly"), xc_readonly_protection);

	for (b = handlers->freeblock_first(mem); b; b = handlers->freeblock_next(b)) {
		zval *bi;

		MAKE_STD_ZVAL(bi);
		array_init(bi);

		add_assoc_long_ex(bi, ZEND_STRS("size"),   handlers->block_size(b));
		add_assoc_long_ex(bi, ZEND_STRS("offset"), handlers->block_offset(mem, b));
		add_next_index_zval(blocks, bi);
#ifndef NDEBUG
		avail += handlers->block_size(b);
#endif
	}
	add_assoc_zval_ex(return_value, ZEND_STRS("free_blocks"), blocks);
#ifndef NDEBUG
	assert(avail == handlers->avail(mem));
#endif
}
/* }}} */
static void xc_fillentry_dmz(xc_entry_t *entry, int del, zval *list TSRMLS_DC) /* {{{ */
{
	zval* ei;
	xc_entry_data_php_t *php;
	xc_entry_data_var_t *var;

	ALLOC_INIT_ZVAL(ei);
	array_init(ei);

	add_assoc_long_ex(ei, ZEND_STRS("size"),     entry->size);
	add_assoc_long_ex(ei, ZEND_STRS("refcount"), entry->refcount);
	add_assoc_long_ex(ei, ZEND_STRS("hits"),     entry->hits);
	add_assoc_long_ex(ei, ZEND_STRS("ctime"),    entry->ctime);
	add_assoc_long_ex(ei, ZEND_STRS("atime"),    entry->atime);
	add_assoc_long_ex(ei, ZEND_STRS("hvalue"),   entry->hvalue);
	if (del) {
		add_assoc_long_ex(ei, ZEND_STRS("dtime"), entry->dtime);
	}
#ifdef IS_UNICODE
	do {
		zval *zv;
		ALLOC_INIT_ZVAL(zv);
		switch (entry->name_type) {
			case IS_UNICODE:
					ZVAL_UNICODEL(zv, entry->name.ustr.val, entry->name.ustr.len, 1);
				break;
			case IS_STRING:
				ZVAL_STRINGL(zv, entry->name.str.val, entry->name.str.len, 1);
				break;
			default:
				assert(0);
		}
		zv->type = entry->name_type;
		add_assoc_zval_ex(ei, ZEND_STRS("name"), zv);
	} while (0);
#else
	add_assoc_stringl_ex(ei, ZEND_STRS("name"), entry->name.str.val, entry->name.str.len, 1);
#endif
	switch (entry->type) {
		case XC_TYPE_PHP:
			php = entry->data.php;
			add_assoc_long_ex(ei, ZEND_STRS("sourcesize"),    php->sourcesize);
#ifdef HAVE_INODE
			add_assoc_long_ex(ei, ZEND_STRS("device"),        php->device);
			add_assoc_long_ex(ei, ZEND_STRS("inode"),         php->inode);
#endif
			add_assoc_long_ex(ei, ZEND_STRS("mtime"),         php->mtime);

#ifdef HAVE_XCACHE_CONSTANT
			add_assoc_long_ex(ei, ZEND_STRS("constinfo_cnt"), php->constinfo_cnt);
#endif
			add_assoc_long_ex(ei, ZEND_STRS("function_cnt"),  php->funcinfo_cnt);
			add_assoc_long_ex(ei, ZEND_STRS("class_cnt"),     php->classinfo_cnt);
#ifdef ZEND_ENGINE_2_1
			add_assoc_long_ex(ei, ZEND_STRS("autoglobal_cnt"),php->autoglobal_cnt);
#endif
			break;
		case XC_TYPE_VAR:
			var = entry->data.var;
			break;

		default:
			assert(0);
	}

	add_next_index_zval(list, ei);
}
/* }}} */
static void xc_filllist_dmz(xc_cache_t *cache, zval *return_value TSRMLS_DC) /* {{{ */
{
	zval* list;
	int i, c;
	xc_entry_t *e;

	ALLOC_INIT_ZVAL(list);
	array_init(list);

	for (i = 0, c = cache->hentry->size; i < c; i ++) {
		for (e = cache->entries[i]; e; e = e->next) {
			xc_fillentry_dmz(e, 0, list TSRMLS_CC);
		}
	}
	add_assoc_zval(return_value, "cache_list", list);

	ALLOC_INIT_ZVAL(list);
	array_init(list);
	for (e = cache->deletes; e; e = e->next) {
		xc_fillentry_dmz(e, 1, list TSRMLS_CC);
	}
	add_assoc_zval(return_value, "deleted_list", list);
}
/* }}} */

static zend_op_array *xc_entry_install(xc_entry_t *xce, zend_file_handle *h TSRMLS_DC) /* {{{ */
{
	zend_uint i;
	xc_entry_data_php_t *p = xce->data.php;
	zend_op_array *old_active_op_array = CG(active_op_array);
#ifndef ZEND_ENGINE_2
	ALLOCA_FLAG(use_heap)
	/* new ptr which is stored inside CG(class_table) */
	xc_cest_t **new_cest_ptrs = (xc_cest_t **)my_do_alloca(sizeof(xc_cest_t*) * p->classinfo_cnt, use_heap);
#endif

	CG(active_op_array) = p->op_array;

#ifdef HAVE_XCACHE_CONSTANT
	/* install constant */
	for (i = 0; i < p->constinfo_cnt; i ++) {
		xc_constinfo_t *ci = &p->constinfos[i];
		xc_install_constant(xce->name.str.val, &ci->constant,
				UNISW(0, ci->type), ci->key, ci->key_size, ci->h TSRMLS_CC);
	}
#endif

	/* install function */
	for (i = 0; i < p->funcinfo_cnt; i ++) {
		xc_funcinfo_t  *fi = &p->funcinfos[i];
		xc_install_function(xce->name.str.val, &fi->func,
				UNISW(0, fi->type), fi->key, fi->key_size, fi->h TSRMLS_CC);
	}

	/* install class */
	for (i = 0; i < p->classinfo_cnt; i ++) {
		xc_classinfo_t *ci = &p->classinfos[i];
#ifndef ZEND_ENGINE_2
		zend_class_entry *ce = CestToCePtr(ci->cest);
		/* fix pointer to the be which inside class_table */
		if (ce->parent) {
			zend_uint class_idx = (/* class_num */ (int) (long) ce->parent) - 1;
			assert(class_idx < i);
			ci->cest.parent = new_cest_ptrs[class_idx];
		}
		new_cest_ptrs[i] =
#endif
#ifdef ZEND_COMPILE_DELAYED_BINDING
		xc_install_class(xce->name.str.val, &ci->cest, -1,
				UNISW(0, ci->type), ci->key, ci->key_size, ci->h TSRMLS_CC);
#else
		xc_install_class(xce->name.str.val, &ci->cest, ci->oplineno,
				UNISW(0, ci->type), ci->key, ci->key_size, ci->h TSRMLS_CC);
#endif
	}

#ifdef ZEND_ENGINE_2_1
	/* trigger auto_globals jit */
	for (i = 0; i < p->autoglobal_cnt; i ++) {
		xc_autoglobal_t *aginfo = &p->autoglobals[i];
		zend_u_is_auto_global(aginfo->type, aginfo->key, aginfo->key_len TSRMLS_CC);
	}
#endif

	i = 1;
	zend_hash_add(&EG(included_files), xce->name.str.val, xce->name.str.len+1, (void *)&i, sizeof(int), NULL);
	if (h) {
		zend_llist_add_element(&CG(open_files), h);
	}

#ifndef ZEND_ENGINE_2
	my_free_alloca(new_cest_ptrs, use_heap);
#endif
	CG(active_op_array) = old_active_op_array;
	return p->op_array;
}
/* }}} */

static inline void xc_entry_unholds_real(xc_stack_t *holds, xc_cache_t **caches, int cachecount TSRMLS_DC) /* {{{ */
{
	int i;
	xc_stack_t *s;
	xc_cache_t *cache;
	xc_entry_t *xce;

	for (i = 0; i < cachecount; i ++) {
		s = &holds[i];
		TRACE("holded %d", xc_stack_count(s));
		if (xc_stack_count(s)) {
			cache = ((xc_entry_t *)xc_stack_top(s))->cache;
			ENTER_LOCK(cache) {
				while (xc_stack_count(s)) {
					xce = (xc_entry_t*) xc_stack_pop(s);
					TRACE("unhold %s", xce->name.str.val);
					xce->refcount --;
					assert(xce->refcount >= 0);
				}
			} LEAVE_LOCK(cache);
		}
	}
}
/* }}} */
static void xc_entry_unholds(TSRMLS_D) /* {{{ */
{
	if (xc_php_caches) {
		xc_entry_unholds_real(XG(php_holds), xc_php_caches, xc_php_hcache.size TSRMLS_CC);
	}

	if (xc_var_caches) {
		xc_entry_unholds_real(XG(var_holds), xc_var_caches, xc_var_hcache.size TSRMLS_CC);
	}
}
/* }}} */
static int xc_stat(const char *filename, const char *include_path, struct stat *pbuf TSRMLS_DC) /* {{{ */
{
	char filepath[MAXPATHLEN];
	char *paths, *path;
	char *tokbuf;
	int size = strlen(include_path) + 1;
	char tokens[] = { DEFAULT_DIR_SEPARATOR, '\0' };
	ALLOCA_FLAG(use_heap)

	paths = (char *)my_do_alloca(size, use_heap);
	memcpy(paths, include_path, size);

	for (path = php_strtok_r(paths, tokens, &tokbuf); path; path = php_strtok_r(NULL, tokens, &tokbuf)) {
		if (snprintf(filepath, sizeof(filepath), "%s/%s", path, filename) >= MAXPATHLEN - 1) {
			continue;
		}
		if (VCWD_STAT(filepath, pbuf) == 0) {
			my_free_alloca(paths, use_heap);
			return SUCCESS;
		}
	}

	my_free_alloca(paths, use_heap);

	return FAILURE;
}
/* }}} */

#define HASH(i) (i)
#define HASH_ZSTR_L(t, s, l) HASH(zend_u_inline_hash_func(t, s, (l + 1) * sizeof(UChar)))
#define HASH_STR_L(s, l) HASH(zend_inline_hash_func(s, l + 1))
#define HASH_STR(s) HASH_STR_L(s, strlen(s) + 1)
#define HASH_NUM(n) HASH(n)
static inline xc_hash_value_t xc_hash_fold(xc_hash_value_t hvalue, const xc_hash_t *hasher) /* {{{ fold hash bits as needed */
{
	xc_hash_value_t folded = 0;
	while (hvalue) {
		folded ^= (hvalue & hasher->mask);
		hvalue >>= hasher->bits;
	}
	return folded;
}
/* }}} */
static inline xc_hash_value_t xc_entry_hash_name(xc_entry_t *xce TSRMLS_DC) /* {{{ */
{
	return UNISW(NOTHING, UG(unicode) ? HASH_ZSTR_L(xce->name_type, xce->name.uni.val, xce->name.uni.len) :)
		HASH_STR_L(xce->name.str.val, xce->name.str.len);
}
/* }}} */
#define xc_entry_hash_var xc_entry_hash_name
static inline xc_hash_value_t xc_entry_hash_php(xc_entry_t *xce TSRMLS_DC) /* {{{ */
{
#ifdef HAVE_INODE
	if (xce->data.php->inode) {
		return HASH(xce->data.php->device + xce->data.php->inode);
	}
#endif
	return xc_entry_hash_name(xce TSRMLS_CC);
}
/* }}} */
static int xc_entry_init_key_php(xc_entry_t *xce, char *filename, char *opened_path_buffer TSRMLS_DC) /* {{{ */
{
	struct stat buf, *pbuf;
	xc_hash_value_t hv;
	int cacheid;
	xc_entry_data_php_t *php;
	char *ptr;
	time_t delta;

	if (!filename || !SG(request_info).path_translated) {
		return FAILURE;
	}

	if (strstr(filename, "://") != NULL) {
		return FAILURE;
	}

	php = xce->data.php;

	if (XG(stat)) {
		if (strcmp(SG(request_info).path_translated, filename) == 0) {
			/* sapi has already done this stat() for us */
			pbuf = sapi_get_stat(TSRMLS_C);
			if (pbuf) {
				goto stat_done;
			}
		}

		/* absolute path */
		pbuf = &buf;
		if (IS_ABSOLUTE_PATH(filename, strlen(filename))) {
			if (VCWD_STAT(filename, pbuf) != 0) {
				return FAILURE;
			}
			goto stat_done;
		}

		/* relative path */
		if (*filename == '.' && (IS_SLASH(filename[1]) || filename[1] == '.')) {
			ptr = filename + 1;
			if (*ptr == '.') {
				while (*(++ptr) == '.');
				if (!IS_SLASH(*ptr)) {
					goto not_relative_path;
				}   
			}

			if (VCWD_STAT(filename, pbuf) != 0) {
				return FAILURE;
			}
			goto stat_done;
		}
not_relative_path:

		/* use include_path */
		if (xc_stat(filename, PG(include_path), pbuf TSRMLS_CC) != SUCCESS) {
			return FAILURE;
		}

		/* fall */

stat_done:
		delta = XG(request_time) - pbuf->st_mtime;
		if (abs(delta) < 2 && !xc_test) {
			return FAILURE;
		}

		php->mtime        = pbuf->st_mtime;
#ifdef HAVE_INODE
		php->device       = pbuf->st_dev;
		php->inode        = pbuf->st_ino;
#endif
		php->sourcesize   = pbuf->st_size;
	}
	else { /* XG(inode) */
		php->mtime        = 0;
#ifdef HAVE_INODE
		php->device       = 0;
		php->inode        = 0;
#endif
		php->sourcesize   = 0;
	}

#ifdef HAVE_INODE
	if (!php->inode)
#endif
	{
		/* hash on filename, let's expand it to real path */
		filename = expand_filepath(filename, opened_path_buffer TSRMLS_CC);
		if (filename == NULL) {
			return FAILURE;
		}
	}

	UNISW(NOTHING, xce->name_type = IS_STRING;)
	xce->name.str.val = filename;
	xce->name.str.len = strlen(filename);

	hv = xc_entry_hash_php(xce TSRMLS_CC);
	cacheid = xc_hash_fold(hv, &xc_php_hcache);
	xce->cache = xc_php_caches[cacheid];
	xce->hvalue = xc_hash_fold(hv, &xc_php_hentry);

	xce->type = XC_TYPE_PHP;
	return SUCCESS;
}
/* }}} */
#ifndef ZEND_COMPILE_DELAYED_BINDING
static void xc_cache_early_binding_class_cb(zend_op *opline, int oplineno, void *data TSRMLS_DC) /* {{{ */
{
	char *class_name;
	int i, class_len;
	xc_cest_t cest;
	xc_entry_data_php_t *php = (xc_entry_data_php_t *) data;

	class_name = Z_OP_CONSTANT(opline->op1).value.str.val;
	class_len  = Z_OP_CONSTANT(opline->op1).value.str.len;
	if (zend_hash_find(CG(class_table), class_name, class_len, (void **) &cest) == FAILURE) {
		assert(0);
	}
	TRACE("got ZEND_DECLARE_INHERITED_CLASS: %s", class_name + 1);
	/* let's see which class */
	for (i = 0; i < php->classinfo_cnt; i ++) {
		if (memcmp(ZSTR_S(php->classinfos[i].key), class_name, class_len) == 0) {
			php->classinfos[i].oplineno = oplineno;
			php->have_early_binding = 1;
			break;
		}
	}

	if (i == php->classinfo_cnt) {
		assert(0);
	}
}
/* }}} */
#endif
static zend_op_array *xc_check_initial_compile_file(zend_file_handle *h, int type TSRMLS_DC) /* {{{ */
{
	XG(initial_compile_file_called) = 1;
	return origin_compile_file(h, type TSRMLS_CC);
}
/* }}} */
static zend_op_array *xc_compile_file(zend_file_handle *h, int type TSRMLS_DC) /* {{{ */
{
	xc_sandbox_t sandbox;
	zend_op_array *op_array;
	xc_entry_t xce, *stored_xce;
	xc_entry_data_php_t php;
	xc_cache_t *cache;
	zend_bool clogged = 0;
	zend_bool catched = 0;
	char *filename;
	char opened_path_buffer[MAXPATHLEN];
	int old_constinfo_cnt, old_funcinfo_cnt, old_classinfo_cnt;

	if (!xc_initized) {
		assert(0);
	}

	if (!XG(cacher)) {
		op_array = old_compile_file(h, type TSRMLS_CC);
#ifdef HAVE_XCACHE_OPTIMIZER
		if (XG(optimizer)) {
			xc_optimize(op_array TSRMLS_CC);
		}
#endif
		return op_array;
	}

	/* {{{ prepare key
	 * include_once() and require_once() gives us opened_path
	 * however, include() and require() non-absolute path which break
	 * included_files, and may confuse with (include|require)_once
	 * -- Xuefer
	 */

	filename = h->opened_path ? h->opened_path : h->filename;
	xce.data.php = &php;
	if (xc_entry_init_key_php(&xce, filename, opened_path_buffer TSRMLS_CC) != SUCCESS) {
		return old_compile_file(h, type TSRMLS_CC);
	}
	cache = xce.cache;
	/* }}} */
	/* {{{ restore */
	/* stale precheck */
	if (XG(request_time) - cache->compiling < 30) {
		cache->clogs ++; /* is it safe here? */
		return old_compile_file(h, type TSRMLS_CC);
	}

	stored_xce = NULL;
	op_array = NULL;
	ENTER_LOCK_EX(cache) {
		/* clogged */
		if (XG(request_time) - cache->compiling < 30) {
			cache->clogs ++;
			op_array = NULL;
			clogged = 1;
			break;
		}

		stored_xce = xc_entry_find_dmz(&xce TSRMLS_CC);
		/* found */
		if (stored_xce) {
			TRACE("found %s, catch it", stored_xce->name.str.val);
			xc_entry_hold_php_dmz(stored_xce TSRMLS_CC);
			xc_cache_hit_dmz(cache TSRMLS_CC);
			break;
		}

		cache->compiling = XG(request_time);
		cache->misses ++;
	} LEAVE_LOCK_EX(cache);

	if (catched) {
		cache->compiling = 0;
		zend_bailout();
	}

	/* found */
	if (stored_xce) {
		goto restore;
	}

	/* clogged */
	if (clogged) {
		return old_compile_file(h, type TSRMLS_CC);
	}
	/* }}} */

	/* {{{ compile */
	TRACE("compiling %s", filename);

	/* make compile inside sandbox */
	xc_sandbox_init(&sandbox, filename TSRMLS_CC);

	old_classinfo_cnt = zend_hash_num_elements(CG(class_table));
	old_funcinfo_cnt  = zend_hash_num_elements(CG(function_table));
	old_constinfo_cnt  = zend_hash_num_elements(EG(zend_constants));

	XG(initial_compile_file_called) = 0;
	zend_try {
		op_array = old_compile_file(h, type TSRMLS_CC);
	} zend_catch {
		catched = 1;
	} zend_end_try();

	if (catched) {
		goto err_bailout;
	}

	if (op_array == NULL) {
		goto err_oparray;
	}

	if (!XG(initial_compile_file_called)) {
		xc_sandbox_free(&sandbox, XC_InstallNoBinding TSRMLS_CC);
		ENTER_LOCK(cache) {
			cache->compiling = 0;
			/* it's not cachable, but don't scare the users with high misses */
			cache->misses --;
		} LEAVE_LOCK(cache);
		return op_array;
	}

	filename = h->opened_path ? h->opened_path : h->filename;
	/* none-inode enabled entry hash/compare on name
	 * do not update to its name to real pathname
	 */
#ifdef HAVE_INODE
	if (xce.data.php->inode)
	{
		if (xce.name.str.val != filename) {
			xce.name.str.val = filename;
			xce.name.str.len = strlen(filename);
		}
	}
#endif

#ifdef HAVE_XCACHE_OPTIMIZER
	if (XG(optimizer)) {
		xc_optimize(op_array TSRMLS_CC);
	}
#endif
	/* }}} */
	/* {{{ prepare */
	php.op_array      = op_array;

#ifdef HAVE_XCACHE_CONSTANT
	php.constinfo_cnt  = zend_hash_num_elements(EG(zend_constants)) - old_constinfo_cnt;
#endif
	php.funcinfo_cnt   = zend_hash_num_elements(CG(function_table)) - old_funcinfo_cnt;
	php.classinfo_cnt  = zend_hash_num_elements(CG(class_table))    - old_classinfo_cnt;
#ifdef ZEND_ENGINE_2_1
	/* {{{ count php.autoglobal_cnt */ {
		Bucket *b;

		php.autoglobal_cnt = 0;
		for (b = CG(auto_globals)->pListHead; b != NULL; b = b->pListNext) {
			zend_auto_global *auto_global = (zend_auto_global *) b->pData;
			/* check if actived */
			if (auto_global->auto_global_callback && !auto_global->armed) {
				php.autoglobal_cnt ++;
			}
		}
	}
	/* }}} */
#endif

#define X_ALLOC_N(var, cnt) do {     \
	if (php.cnt) {                   \
		ECALLOC_N(php.var, php.cnt); \
		if (!php.var) {              \
			goto err_##var;          \
		}                            \
	}                                \
	else {                           \
		php.var = NULL;              \
	}                                \
} while (0)

#ifdef HAVE_XCACHE_CONSTANT
	X_ALLOC_N(constinfos,  constinfo_cnt);
#endif
	X_ALLOC_N(funcinfos,   funcinfo_cnt);
	X_ALLOC_N(classinfos,  classinfo_cnt);
#ifdef ZEND_ENGINE_2_1
	X_ALLOC_N(autoglobals, autoglobal_cnt);
#endif
#undef X_ALLOC
	/* }}} */
	/* {{{ shallow copy, pointers only */ {
		Bucket *b;
		unsigned int i;
		unsigned int j;

#define COPY_H(vartype, var, cnt, name, datatype) do {        \
	for (i = 0, j = 0; b; i ++, b = b->pListNext) {           \
		vartype *data = &php.var[j];                          \
                                                              \
		if (i < old_##cnt) {                                  \
			continue;                                         \
		}                                                     \
		j ++;                                                 \
                                                              \
		assert(i < old_##cnt + php.cnt);                      \
		assert(b->pData);                                     \
		memcpy(&data->name, b->pData, sizeof(datatype));      \
		UNISW(NOTHING, data->type = b->key.type;)             \
		if (UNISW(1, b->key.type == IS_STRING)) {             \
			ZSTR_S(data->key)      = BUCKET_KEY_S(b);          \
		}                                                     \
		else {                                                \
			ZSTR_U(data->key)      = BUCKET_KEY_U(b);         \
		}                                                     \
		data->key_size   = b->nKeyLength;                     \
		data->h          = b->h;                              \
	}                                                         \
} while(0)

#ifdef HAVE_XCACHE_CONSTANT
		b = EG(zend_constants)->pListHead; COPY_H(xc_constinfo_t, constinfos, constinfo_cnt, constant, zend_constant);
#endif
		b = CG(function_table)->pListHead; COPY_H(xc_funcinfo_t,  funcinfos,  funcinfo_cnt,  func,     zend_function);
		b = CG(class_table)->pListHead;    COPY_H(xc_classinfo_t, classinfos, classinfo_cnt, cest,     xc_cest_t);

#undef COPY_H

		/* for ZE1, cest need to be fixed inside store */

#ifdef ZEND_ENGINE_2_1
		/* scan for acatived auto globals */
		i = 0;
		for (b = CG(auto_globals)->pListHead; b != NULL; b = b->pListNext) {
			zend_auto_global *auto_global = (zend_auto_global *) b->pData;
			/* check if actived */
			if (auto_global->auto_global_callback && !auto_global->armed) {
				xc_autoglobal_t *data = &php.autoglobals[i];

				assert(i < php.autoglobal_cnt);
				i ++;
				UNISW(NOTHING, data->type = b->key.type;)
				if (UNISW(1, b->key.type == IS_STRING)) {
					ZSTR_S(data->key)     = BUCKET_KEY_S(b);
				}
				else {
					ZSTR_U(data->key)     = BUCKET_KEY_U(b);
				}
				data->key_len = b->nKeyLength - 1;
				data->h       = b->h;
			}
		}
#endif
	}
	/* }}} */
#ifndef ZEND_COMPILE_DELAYED_BINDING
	/* {{{ find inherited classes that should be early-binding */
	php.have_early_binding = 0;
	{
		int i;
		for (i = 0; i < php.classinfo_cnt; i ++) {
			php.classinfos[i].oplineno = -1;
		}
	}

	xc_undo_pass_two(php.op_array TSRMLS_CC);
	xc_foreach_early_binding_class(php.op_array, xc_cache_early_binding_class_cb, (void *) &php TSRMLS_CC);
	xc_redo_pass_two(php.op_array TSRMLS_CC);
	/* }}} */
#endif

#ifdef SHOW_DPRINT
	xc_dprint(&xce, 0 TSRMLS_CC);
#endif
	ENTER_LOCK_EX(cache) { /* {{{ store/add entry */
		stored_xce = xc_entry_store_dmz(&xce TSRMLS_CC);
	} LEAVE_LOCK_EX(cache);
	/* }}} */
	TRACE("%s", "stored");

#define X_FREE(var) \
	if (xce.data.php->var) { \
		efree(xce.data.php->var); \
	} \
err_##var:

#ifdef ZEND_ENGINE_2_1
	X_FREE(autoglobals)
#endif
	X_FREE(classinfos)
	X_FREE(funcinfos)
#ifdef HAVE_XCACHE_CONSTANT
	X_FREE(constinfos)
#endif
#undef X_FREE

err_oparray:
err_bailout:

	if (xc_test && stored_xce) {
		/* free it, no install. restore now */
		xc_sandbox_free(&sandbox, XC_NoInstall TSRMLS_CC);
	}
	else if (!op_array) {
		/* failed to compile free it, no install */
		xc_sandbox_free(&sandbox, XC_NoInstall TSRMLS_CC);
	}
	else {
		zend_op_array *old_active_op_array = CG(active_op_array);
		CG(active_op_array) = op_array;
		xc_sandbox_free(&sandbox, XC_Install TSRMLS_CC);
		CG(active_op_array) = old_active_op_array;
	}

	ENTER_LOCK(cache) {
		cache->compiling = 0;
	} LEAVE_LOCK(cache);
	if (catched) {
		cache->errors ++;
		zend_bailout();
	}
	if (xc_test && stored_xce) {
#ifdef ZEND_ENGINE_2
		destroy_op_array(op_array TSRMLS_CC);
#else
		destroy_op_array(op_array);
#endif
		efree(op_array);
		h = NULL;
		goto restore;
	}
	return op_array;

restore:
	CG(in_compilation)    = 1;
	CG(compiled_filename) = stored_xce->name.str.val;
	CG(zend_lineno)       = 0;
	TRACE("restoring %s", stored_xce->name.str.val);
	xc_processor_restore_xc_entry_t(&xce, stored_xce, xc_readonly_protection TSRMLS_CC);
#ifdef SHOW_DPRINT
	xc_dprint(&xce, 0 TSRMLS_CC);
#endif

	catched = 0;
	zend_try {
		op_array = xc_entry_install(&xce, h TSRMLS_CC);
	} zend_catch {
		catched = 1;
	} zend_end_try();

#define X_FREE(var) \
	if (xce.data.php->var) { \
		efree(xce.data.php->var); \
	}
	X_FREE(classinfos)
	X_FREE(funcinfos)
#ifdef HAVE_XCACHE_CONSTANT
	X_FREE(constinfos)
#endif
#undef X_FREE
	efree(xce.data.php);

	if (catched) {
		zend_bailout();
	}
	CG(in_compilation)    = 0;
	CG(compiled_filename) = NULL;
	TRACE("restored  %s", stored_xce->name.str.val);
	return op_array;
}
/* }}} */

/* gdb helper functions, but N/A for coredump */
int xc_is_rw(const void *p) /* {{{ */
{
	xc_shm_t *shm;
	int i;

	if (xc_php_caches) {
		for (i = 0; i < xc_php_hcache.size; i ++) {
			shm = xc_php_caches[i]->shm;
			if (shm->handlers->is_readwrite(shm, p)) {
				return 1;
			}
		}
	}

	if (xc_var_caches) {
		for (i = 0; i < xc_var_hcache.size; i ++) {
			shm = xc_var_caches[i]->shm;
			if (shm->handlers->is_readwrite(shm, p)) {
				return 1;
			}
		}
	}
	return 0;
}
/* }}} */
int xc_is_ro(const void *p) /* {{{ */
{
	xc_shm_t *shm;
	int i;

	if (xc_php_caches) {
		for (i = 0; i < xc_php_hcache.size; i ++) {
			shm = xc_php_caches[i]->shm;
			if (shm->handlers->is_readonly(shm, p)) {
				return 1;
			}
		}
	}

	if (xc_var_caches) {
		for (i = 0; i < xc_var_hcache.size; i ++) {
			shm = xc_var_caches[i]->shm;
			if (shm->handlers->is_readonly(shm, p)) {
				return 1;
			}
		}
	}
	return 0;
}
/* }}} */
int xc_is_shm(const void *p) /* {{{ */
{
	return xc_is_ro(p) || xc_is_rw(p);
}
/* }}} */

#ifdef ZEND_ENGINE_2
/* {{{ xc_gc_op_array_t */
typedef struct {
	zend_uint num_args;
	zend_arg_info *arg_info;
} xc_gc_op_array_t;
/* }}} */
void xc_gc_add_op_array(zend_op_array *op_array TSRMLS_DC) /* {{{ */
{
	xc_gc_op_array_t gc_op_array;
	gc_op_array.num_args = op_array->num_args;
	gc_op_array.arg_info = op_array->arg_info;
#ifdef ZEND_ENGINE_2
	zend_hash_next_index_insert(&XG(gc_op_arrays), (void *) &gc_op_array, sizeof(gc_op_array), NULL);
#endif
}
/* }}} */
static void xc_gc_op_array(void *pDest) /* {{{ */
{
	xc_gc_op_array_t *op_array = (xc_gc_op_array_t *) pDest;
	zend_uint i;
	if (op_array->arg_info) {
		for (i = 0; i < op_array->num_args; i++) {
			efree((char *) ZSTR_V(op_array->arg_info[i].name));
			if (ZSTR_V(op_array->arg_info[i].class_name)) {
				efree((char *) ZSTR_V(op_array->arg_info[i].class_name));
			}
		}
		efree(op_array->arg_info);
	}
}
/* }}} */
#endif

/* module helper function */
static int xc_init_constant(int module_number TSRMLS_DC) /* {{{ */
{
	typedef struct {
		const char *prefix;
		zend_uchar (*getsize)();
		const char *(*get)(zend_uchar i);
	} xc_meminfo_t;
	xc_meminfo_t nameinfos[] = {
		{ "",        xc_get_op_type_count,   xc_get_op_type   },
		{ "",        xc_get_data_type_count, xc_get_data_type },
		{ "",        xc_get_opcode_count,    xc_get_opcode    },
		{ "OPSPEC_", xc_get_op_spec_count,   xc_get_op_spec   },
		{ NULL, NULL, NULL }
	};
	xc_meminfo_t* p;
	zend_uchar i, count;
	char const_name[96];
	int const_name_len;
	int undefdone = 0;

	for (p = nameinfos; p->getsize; p ++) {
		count = p->getsize();
		for (i = 0; i < count; i ++) {
			const char *name = p->get(i);
			if (!name) continue;
			if (strcmp(name, "UNDEF") == 0) {
				if (undefdone) continue;
				undefdone = 1;
			}
			const_name_len = snprintf(const_name, sizeof(const_name), "XC_%s%s", p->prefix, name);
			zend_register_long_constant(const_name, const_name_len+1, i, CONST_CS | CONST_PERSISTENT, module_number TSRMLS_CC);
		}
	}

	zend_register_long_constant(ZEND_STRS("XC_SIZEOF_TEMP_VARIABLE"), sizeof(temp_variable), CONST_CS | CONST_PERSISTENT, module_number TSRMLS_CC);
	zend_register_long_constant(ZEND_STRS("XC_TYPE_PHP"), XC_TYPE_PHP, CONST_CS | CONST_PERSISTENT, module_number TSRMLS_CC);
	zend_register_long_constant(ZEND_STRS("XC_TYPE_VAR"), XC_TYPE_VAR, CONST_CS | CONST_PERSISTENT, module_number TSRMLS_CC);
	zend_register_stringl_constant(ZEND_STRS("XCACHE_VERSION"), ZEND_STRL(XCACHE_VERSION), CONST_CS | CONST_PERSISTENT, module_number TSRMLS_CC);
	zend_register_stringl_constant(ZEND_STRS("XCACHE_MODULES"), ZEND_STRL(XCACHE_MODULES), CONST_CS | CONST_PERSISTENT, module_number TSRMLS_CC);
	return 0;
}
/* }}} */
static xc_shm_t *xc_cache_destroy(xc_cache_t **caches, xc_hash_t *hcache) /* {{{ */
{
	int i;
	xc_cache_t *cache;
	xc_shm_t *shm;

	if (!caches) {
		return NULL;
	}
	shm = NULL;
	for (i = 0; i < hcache->size; i ++) {
		cache = caches[i];
		if (cache) {
			if (cache->lck) {
				xc_lock_destroy(cache->lck);
			}
			/* do NOT free
			if (cache->entries) {
				cache->mem->handlers->free(cache->mem, cache->entries);
			}
			cache->mem->handlers->free(cache->mem, cache);
			*/
			shm = cache->shm;
			shm->handlers->memdestroy(cache->mem);
		}
	}
	free(caches);
	return shm;
}
/* }}} */
static xc_cache_t **xc_cache_init(xc_shm_t *shm, xc_hash_t *hcache, xc_hash_t *hentry, xc_shmsize_t shmsize) /* {{{ */
{
	xc_cache_t **caches = NULL, *cache;
	xc_mem_t *mem;
	time_t now = time(NULL);
	int i;
	xc_memsize_t memsize;

	memsize = shmsize / hcache->size;

	/* Don't let it break out of mem after ALIGNed
	 * This is important for 
	 * Simply loop until it fit our need
	 */
	while (ALIGN(memsize) * hcache->size > shmsize && ALIGN(memsize) != memsize) {
		if (memsize < ALIGN(1)) {
			CHECK(NULL, "cache too small");
		}
		memsize --;
	}

	CHECK(caches = calloc(hcache->size, sizeof(xc_cache_t *)), "caches OOM");

	for (i = 0; i < hcache->size; i ++) {
		CHECK(mem            = shm->handlers->meminit(shm, memsize), "Failed init memory allocator");
		CHECK(cache          = mem->handlers->calloc(mem, 1, sizeof(xc_cache_t)), "cache OOM");
		CHECK(cache->entries = mem->handlers->calloc(mem, hentry->size, sizeof(xc_entry_t*)), "entries OOM");
		CHECK(cache->lck     = xc_lock_init(NULL), "can't create lock");

		cache->hcache  = hcache;
		cache->hentry  = hentry;
		cache->shm     = shm;
		cache->mem     = mem;
		cache->cacheid = i;
		cache->last_gc_deletes = now;
		cache->last_gc_expires = now;
		caches[i] = cache;
	}
	return caches;

err:
	if (caches) {
		xc_cache_destroy(caches, hcache);
	}
	return NULL;
}
/* }}} */
static void xc_destroy() /* {{{ */
{
	xc_shm_t *shm = NULL;

	if (old_compile_file) {
		zend_compile_file = old_compile_file;
		old_compile_file = NULL;
	}

	if (origin_compile_file) {
		zend_compile_file = origin_compile_file;
		origin_compile_file = NULL;
	}

	if (xc_php_caches) {
		shm = xc_cache_destroy(xc_php_caches, &xc_php_hcache);
		xc_php_caches = NULL;
	}

	if (xc_var_caches) {
		shm = xc_cache_destroy(xc_var_caches, &xc_var_hcache);
		xc_var_caches = NULL;
	}

	if (shm) {
		xc_shm_destroy(shm);
	}

	xc_initized = 0;
}
/* }}} */
static int xc_init(int module_number TSRMLS_DC) /* {{{ */
{
	xc_shm_t *shm;
	xc_shmsize_t shmsize = ALIGN(xc_php_size) + ALIGN(xc_var_size);

	xc_php_caches = xc_var_caches = NULL;
	shm = NULL;

	if (shmsize < (size_t) xc_php_size || shmsize < (size_t) xc_var_size) {
		zend_error(E_ERROR, "XCache: neither xcache.size nor xcache.var_size can be negative");
		goto err;
	}

	if (xc_php_size || xc_var_size) {
		CHECK(shm = xc_shm_init(xc_shm_scheme, shmsize, xc_readonly_protection, xc_mmap_path, NULL), "Cannot create shm");
		if (!shm->handlers->can_readonly(shm)) {
			xc_readonly_protection = 0;
		}

		if (xc_php_size) {
			old_compile_file = zend_compile_file;
			zend_compile_file = xc_compile_file;

			CHECK(xc_php_caches = xc_cache_init(shm, &xc_php_hcache, &xc_php_hentry, xc_php_size), "failed init opcode cache");
		}

		if (xc_var_size) {
			CHECK(xc_var_caches = xc_cache_init(shm, &xc_var_hcache, &xc_var_hentry, xc_var_size), "failed init variable cache");
		}
	}
	return SUCCESS;

err:
	xc_destroy();
	if (xc_php_caches || xc_var_caches) {
		/* shm destroied in xc_destroy() */
	}
	else if (shm) {
		xc_shm_destroy(shm);
	}
	return 0;
}
/* }}} */
static void xc_request_init(TSRMLS_D) /* {{{ */
{
	int i;

	if (!XG(internal_table_copied)) {
		zend_function tmp_func;
		xc_cest_t tmp_cest;

#ifdef HAVE_XCACHE_CONSTANT
		zend_hash_destroy(&XG(internal_constant_table));
#endif
		zend_hash_destroy(&XG(internal_function_table));
		zend_hash_destroy(&XG(internal_class_table));

#ifdef HAVE_XCACHE_CONSTANT
		zend_hash_init_ex(&XG(internal_constant_table), 20,  NULL, (dtor_func_t) xc_zend_constant_dtor, 1, 0);
#endif
		zend_hash_init_ex(&XG(internal_function_table), 100, NULL, NULL, 1, 0);
		zend_hash_init_ex(&XG(internal_class_table),    10,  NULL, NULL, 1, 0);

#ifdef HAVE_XCACHE_CONSTANT
		xc_copy_internal_zend_constants(&XG(internal_constant_table), EG(zend_constants));
#endif
		zend_hash_copy(&XG(internal_function_table), CG(function_table), NULL, &tmp_func, sizeof(tmp_func));
		zend_hash_copy(&XG(internal_class_table), CG(class_table), NULL, &tmp_cest, sizeof(tmp_cest));

		XG(internal_table_copied) = 1;
	}
	if (xc_php_caches && !XG(php_holds)) {
		XG(php_holds) = calloc(xc_php_hcache.size, sizeof(xc_stack_t));
		for (i = 0; i < xc_php_hcache.size; i ++) {
			xc_stack_init(&XG(php_holds[i]));
		}
	}

	if (xc_var_caches && !XG(var_holds)) {
		XG(var_holds) = calloc(xc_var_hcache.size, sizeof(xc_stack_t));
		for (i = 0; i < xc_var_hcache.size; i ++) {
			xc_stack_init(&XG(var_holds[i]));
		}
	}

#ifdef ZEND_ENGINE_2
	zend_hash_init(&XG(gc_op_arrays), 32, NULL, xc_gc_op_array, 0);
#endif

#if PHP_API_VERSION <= 20041225
	XG(request_time) = time(NULL);
#else
	XG(request_time) = sapi_get_request_time(TSRMLS_C);
#endif

#ifdef HAVE_XCACHE_COVERAGER
	xc_coverager_request_init(TSRMLS_C);
#endif
}
/* }}} */
static void xc_request_shutdown(TSRMLS_D) /* {{{ */
{
	xc_entry_unholds(TSRMLS_C);
#ifdef ZEND_ENGINE_2
	zend_hash_destroy(&XG(gc_op_arrays));
#endif
	xc_gc_expires_php(TSRMLS_C);
	xc_gc_expires_var(TSRMLS_C);
	xc_gc_deletes(TSRMLS_C);
#ifdef HAVE_XCACHE_COVERAGER
	xc_coverager_request_shutdown(TSRMLS_C);
#endif
}
/* }}} */
/* {{{ PHP_GINIT_FUNCTION(xcache) */
static
#ifdef PHP_GINIT_FUNCTION
PHP_GINIT_FUNCTION(xcache)
#else
void xc_init_globals(zend_xcache_globals* xcache_globals TSRMLS_DC)
#endif
{
	memset(xcache_globals, 0, sizeof(zend_xcache_globals));

#ifdef HAVE_XCACHE_CONSTANT
	zend_hash_init_ex(&xcache_globals->internal_constant_table, 1, NULL, (dtor_func_t) xc_zend_constant_dtor, 1, 0);
#endif
	zend_hash_init_ex(&xcache_globals->internal_function_table, 1, NULL, NULL, 1, 0);
	zend_hash_init_ex(&xcache_globals->internal_class_table,    1, NULL, NULL, 1, 0);
}
/* }}} */
/* {{{ PHP_GSHUTDOWN_FUNCTION(xcache) */
static
#ifdef PHP_GSHUTDOWN_FUNCTION
PHP_GSHUTDOWN_FUNCTION(xcache)
#else
void xc_shutdown_globals(zend_xcache_globals* xcache_globals TSRMLS_DC)
#endif
{
	int i;

	if (xcache_globals->php_holds != NULL) {
		for (i = 0; i < xc_php_hcache.size; i ++) {
			xc_stack_destroy(&xcache_globals->php_holds[i]);
		}
		free(xcache_globals->php_holds);
		xcache_globals->php_holds = NULL;
	}

	if (xcache_globals->var_holds != NULL) {
		for (i = 0; i < xc_var_hcache.size; i ++) {
			xc_stack_destroy(&xcache_globals->var_holds[i]);
		}
		free(xcache_globals->var_holds);
		xcache_globals->var_holds = NULL;
	}

	if (xcache_globals->internal_table_copied) {
#ifdef HAVE_XCACHE_CONSTANT
		zend_hash_destroy(&xcache_globals->internal_constant_table);
#endif
		zend_hash_destroy(&xcache_globals->internal_function_table);
		zend_hash_destroy(&xcache_globals->internal_class_table);
	}
}
/* }}} */

/* user functions */
static int xcache_admin_auth_check(TSRMLS_D) /* {{{ */
{
	zval **server = NULL;
	zval **user = NULL;
	zval **pass = NULL;
	char *admin_user = NULL;
	char *admin_pass = NULL;
	HashTable *ht;

	/* auth disabled, nothing to do.. */
	if (!XG(auth_enabled)) {
		return 1;
	}

	if (cfg_get_string("xcache.admin.user", &admin_user) == FAILURE || !admin_user[0]) {
		admin_user = NULL;
	}
	if (cfg_get_string("xcache.admin.pass", &admin_pass) == FAILURE || !admin_pass[0]) {
		admin_pass = NULL;
	}

	if (admin_user == NULL || admin_pass == NULL) {
		php_error_docref(XCACHE_WIKI_URL "/InstallAdministration" TSRMLS_CC, E_ERROR,
				"xcache.admin.user and/or xcache.admin.pass settings is not configured."
				" Make sure you've modified the correct php ini file for your php used in webserver.");
		zend_bailout();
	}
	if (strlen(admin_pass) != 32) {
		php_error_docref(NULL TSRMLS_CC, E_ERROR, "xcache.admin.pass is %lu chars unexpectedly, it is supposed to be the password after md5() which should be 32 chars", (unsigned long) strlen(admin_pass));
		zend_bailout();
	}

#ifdef ZEND_ENGINE_2_1
	zend_is_auto_global("_SERVER", sizeof("_SERVER") - 1 TSRMLS_CC);
#endif
	if (zend_hash_find(&EG(symbol_table), "_SERVER", sizeof("_SERVER"), (void **) &server) != SUCCESS || Z_TYPE_PP(server) != IS_ARRAY) {
		php_error_docref(NULL TSRMLS_CC, E_ERROR, "_SERVER is corrupted");
		zend_bailout();
	}
	ht = HASH_OF((*server));

	if (zend_hash_find(ht, "PHP_AUTH_USER", sizeof("PHP_AUTH_USER"), (void **) &user) == FAILURE) {
	 	user = NULL;
	}
	else if (Z_TYPE_PP(user) != IS_STRING) {
		user = NULL;
	}

	if (zend_hash_find(ht, "PHP_AUTH_PW", sizeof("PHP_AUTH_PW"), (void **) &pass) == FAILURE) {
	 	pass = NULL;
	}
	else if (Z_TYPE_PP(pass) != IS_STRING) {
		pass = NULL;
	}

	if (user != NULL && pass != NULL && strcmp(admin_user, Z_STRVAL_PP(user)) == 0) {
		PHP_MD5_CTX context;
		char md5str[33];
		unsigned char digest[16];

		PHP_MD5Init(&context);
		PHP_MD5Update(&context, (unsigned char *) Z_STRVAL_PP(pass), Z_STRLEN_PP(pass));
		PHP_MD5Final(digest, &context);

		md5str[0] = '\0';
		make_digest(md5str, digest);
		if (strcmp(admin_pass, md5str) == 0) {
			return 1;
		}
	}

#define STR "HTTP/1.0 401 Unauthorized"
	sapi_add_header_ex(STR, sizeof(STR) - 1, 1, 1 TSRMLS_CC);
#undef STR
#define STR "WWW-authenticate: Basic Realm=\"XCache Administration\""
	sapi_add_header_ex(STR, sizeof(STR) - 1, 1, 1 TSRMLS_CC);
#undef STR
#define STR "Content-type: text/html; charset=UTF-8"
	sapi_add_header_ex(STR, sizeof(STR) - 1, 1, 1 TSRMLS_CC);
#undef STR
	ZEND_PUTS("<html>\n");
	ZEND_PUTS("<head><title>XCache Authentication Failed</title></head>\n");
	ZEND_PUTS("<body>\n");
	ZEND_PUTS("<h1>XCache Authentication Failed</h1>\n");
	ZEND_PUTS("<p>You're not authorized to access this page due to wrong username and/or password you typed.<br />The following check points is suggested:</p>\n");
	ZEND_PUTS("<ul>\n");
	ZEND_PUTS("<li>Be aware that `Username' and `Password' is case sense. Check capslock status led on your keyboard, and punch left/right Shift keys once for each</li>\n");
	ZEND_PUTS("<li>Make sure the md5 password is generated correctly. You may use <a href=\"mkpassword.php\">mkpassword.php</a></li>\n");
	ZEND_PUTS("<li>Reload browser cache by pressing F5 and/or Ctrl+F5, or simply clear browser cache after you've updated username/password in php ini.</li>\n");
	ZEND_PUTS("</ul>\n");
	ZEND_PUTS("Check <a href=\"" XCACHE_WIKI_URL "/InstallAdministration\">XCache wiki page</a> for more information.\n");
	ZEND_PUTS("</body>\n");
	ZEND_PUTS("</html>\n");

	zend_bailout();
	return 0;
}
/* }}} */
/* {{{ xcache_admin_operate */
typedef enum { XC_OP_COUNT, XC_OP_INFO, XC_OP_LIST, XC_OP_CLEAR } xcache_op_type;
static void xcache_admin_operate(xcache_op_type optype, INTERNAL_FUNCTION_PARAMETERS)
{
	long type;
	int size;
	xc_cache_t **caches, *cache;
	long id = 0;

	xcache_admin_auth_check(TSRMLS_C);

	if (!xc_initized) {
		RETURN_NULL();
	}

	if (optype == XC_OP_COUNT) {
		if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &type) == FAILURE) {
			return;
		}
	}
	else if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ll", &type, &id) == FAILURE) {
		return;
	}

	switch (type) {
		case XC_TYPE_PHP:
			size = xc_php_hcache.size;
			caches = xc_php_caches;
			break;

		case XC_TYPE_VAR:
			size = xc_var_hcache.size;
			caches = xc_var_caches;
			break;

		default:
			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unknown type %ld", type);
			RETURN_FALSE;
	}

	switch (optype) {
		case XC_OP_COUNT:
			RETURN_LONG(size)
			break;

		case XC_OP_INFO:
		case XC_OP_LIST:
			if (id < 0 || id >= size) {
				php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cache not exists");
				RETURN_FALSE;
			}

			array_init(return_value);

			cache = caches[id];
			ENTER_LOCK(cache) {
				if (optype == XC_OP_INFO) {
					xc_fillinfo_dmz(type, cache, return_value TSRMLS_CC);
				}
				else {
					xc_filllist_dmz(cache, return_value TSRMLS_CC);
				}
			} LEAVE_LOCK(cache);
			break;
		case XC_OP_CLEAR:
			{
				xc_entry_t *e, *next;
				int i, c;

				if (id < 0 || id >= size) {
					php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cache not exists");
					RETURN_FALSE;
				}

				cache = caches[id];
				ENTER_LOCK(cache) {
					for (i = 0, c = cache->hentry->size; i < c; i ++) {
						for (e = cache->entries[i]; e; e = next) {
							next = e->next;
							xc_entry_remove_dmz(e TSRMLS_CC);
						}
						cache->entries[i] = NULL;
					}
				} LEAVE_LOCK(cache);
				xc_gc_deletes(TSRMLS_C);
			}
			break;

		default:
			assert(0);
	}
}
/* }}} */
/* {{{ proto int xcache_count(int type)
   Return count of cache on specified cache type */
PHP_FUNCTION(xcache_count)
{
	xcache_admin_operate(XC_OP_COUNT, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto array xcache_info(int type, int id)
   Get cache info by id on specified cache type */
PHP_FUNCTION(xcache_info)
{
	xcache_admin_operate(XC_OP_INFO, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto array xcache_list(int type, int id)
   Get cache entries list by id on specified cache type */
PHP_FUNCTION(xcache_list)
{
	xcache_admin_operate(XC_OP_LIST, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto array xcache_clear_cache(int type, int id)
   Clear cache by id on specified cache type */
PHP_FUNCTION(xcache_clear_cache)
{
	xcache_admin_operate(XC_OP_CLEAR, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */

#define VAR_DISABLED_WARNING() do { \
		php_error_docref(NULL TSRMLS_CC, E_WARNING, "xcache.var_size is either 0 or too small to enable var data caching"); \
} while (0)

static int xc_entry_init_key_var(xc_entry_t *xce, zval *name TSRMLS_DC) /* {{{ */
{
	xc_hash_value_t hv;
	int cacheid;

	switch (Z_TYPE_P(name)) {
#ifdef IS_UNICODE
		case IS_UNICODE:
#endif
		case IS_STRING:
			break;
		default:
#ifdef IS_UNICODE
			convert_to_unicode(name);
#else
			convert_to_string(name);
#endif
	}
#ifdef IS_UNICODE
	xce->name_type = name->type;
#endif
	xce->name = name->value;

	hv = xc_entry_hash_var(xce TSRMLS_CC);

	cacheid = (hv & xc_var_hcache.mask);
	xce->cache = xc_var_caches[cacheid];
	hv >>= xc_var_hcache.bits;
	xce->hvalue = (hv & xc_var_hentry.mask);

	xce->type = XC_TYPE_VAR;
	return SUCCESS;
}
/* }}} */
/* {{{ proto mixed xcache_get(string name)
   Get cached data by specified name */
PHP_FUNCTION(xcache_get)
{
	xc_entry_t xce, *stored_xce;
	xc_entry_data_var_t var;
	zval *name;
	int found = 0;

	if (!xc_var_caches) {
		VAR_DISABLED_WARNING();
		RETURN_NULL();
	}

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &name) == FAILURE) {
		return;
	}
	xce.data.var = &var;
	xc_entry_init_key_var(&xce, name TSRMLS_CC);

	ENTER_LOCK(xce.cache) {
		stored_xce = xc_entry_find_dmz(&xce TSRMLS_CC);
		if (stored_xce) {
			if (!VAR_ENTRY_EXPIRED(stored_xce)) {
				found = 1;
				xc_processor_restore_zval(return_value, stored_xce->data.var->value, stored_xce->have_references TSRMLS_CC);
				/* return */
				break;
			}
			else {
				xc_entry_remove_dmz(stored_xce TSRMLS_CC);
			}
		}

		RETVAL_NULL();
	} LEAVE_LOCK(xce.cache);
	if (found) {
		xc_cache_hit_dmz(xce.cache TSRMLS_CC);
	}
	else {
		xce.cache->misses ++;
	}
}
/* }}} */
/* {{{ proto bool  xcache_set(string name, mixed value [, int ttl])
   Store data to cache by specified name */
PHP_FUNCTION(xcache_set)
{
	xc_entry_t xce, *stored_xce;
	xc_entry_data_var_t var;
	zval *name;
	zval *value;

	if (!xc_var_caches) {
		VAR_DISABLED_WARNING();
		RETURN_NULL();
	}

	xce.ttl = XG(var_ttl);
	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "zz|l", &name, &value, &xce.ttl) == FAILURE) {
		return;
	}

	/* max ttl */
	if (xc_var_maxttl && (!xce.ttl || xce.ttl > xc_var_maxttl)) {
		xce.ttl = xc_var_maxttl;
	}

	xce.data.var = &var;
	xc_entry_init_key_var(&xce, name TSRMLS_CC);

	ENTER_LOCK(xce.cache) {
		stored_xce = xc_entry_find_dmz(&xce TSRMLS_CC);
		if (stored_xce) {
			xc_entry_remove_dmz(stored_xce TSRMLS_CC);
		}
		var.value = value;
		RETVAL_BOOL(xc_entry_store_dmz(&xce TSRMLS_CC) != NULL ? 1 : 0);
	} LEAVE_LOCK(xce.cache);
}
/* }}} */
/* {{{ proto bool  xcache_isset(string name)
   Check if an entry exists in cache by specified name */
PHP_FUNCTION(xcache_isset)
{
	xc_entry_t xce, *stored_xce;
	xc_entry_data_var_t var;
	zval *name;
	int found = 0;

	if (!xc_var_caches) {
		VAR_DISABLED_WARNING();
		RETURN_FALSE;
	}

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &name) == FAILURE) {
		return;
	}
	xce.data.var = &var;
	xc_entry_init_key_var(&xce, name TSRMLS_CC);

	ENTER_LOCK(xce.cache) {
		stored_xce = xc_entry_find_dmz(&xce TSRMLS_CC);
		if (stored_xce) {
			if (!VAR_ENTRY_EXPIRED(stored_xce)) {
				found = 1;
				RETVAL_TRUE;
				/* return */
				break;
			}
			else {
				xc_entry_remove_dmz(stored_xce TSRMLS_CC);
			}
		}

		RETVAL_FALSE;
	} LEAVE_LOCK(xce.cache);
	if (found) {
		xc_cache_hit_dmz(xce.cache TSRMLS_CC);
	}
	else {
		xce.cache->misses ++;
	}
}
/* }}} */
/* {{{ proto bool  xcache_unset(string name)
   Unset existing data in cache by specified name */
PHP_FUNCTION(xcache_unset)
{
	xc_entry_t xce, *stored_xce;
	xc_entry_data_var_t var;
	zval *name;

	if (!xc_var_caches) {
		VAR_DISABLED_WARNING();
		RETURN_FALSE;
	}

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &name) == FAILURE) {
		return;
	}
	xce.data.var = &var;
	xc_entry_init_key_var(&xce, name TSRMLS_CC);

	ENTER_LOCK(xce.cache) {
		stored_xce = xc_entry_find_dmz(&xce TSRMLS_CC);
		if (stored_xce) {
			xc_entry_remove_dmz(stored_xce TSRMLS_CC);
			RETVAL_TRUE;
		}
		else {
			RETVAL_FALSE;
		}
	} LEAVE_LOCK(xce.cache);
}
/* }}} */
/* {{{ proto bool  xcache_unset_by_prefix(string prefix)
   Unset existing data in cache by specified prefix */
PHP_FUNCTION(xcache_unset_by_prefix)
{
	zval *prefix;
	int i, iend;

	if (!xc_var_caches) {
		VAR_DISABLED_WARNING();
		RETURN_FALSE;
	}

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &prefix) == FAILURE) {
		return;
	}

	for (i = 0, iend = xc_var_hcache.size; i < iend; i ++) {
		xc_cache_t *cache = xc_var_caches[i];
		ENTER_LOCK(cache) {
			int j, jend;
			for (j = 0, jend = cache->hentry->size; j < jend; j ++) {
				xc_entry_t *entry, *next;
				for (entry = cache->entries[j]; entry; entry = next) {
					next = entry->next;
					if (xc_entry_has_prefix_dmz(entry, prefix)) {
						xc_entry_remove_dmz(entry TSRMLS_CC);
					}
				}
			}
		} LEAVE_LOCK(cache);
	}
}
/* }}} */
static inline void xc_var_inc_dec(int inc, INTERNAL_FUNCTION_PARAMETERS) /* {{{ */
{
	xc_entry_t xce, *stored_xce;
	xc_entry_data_var_t var, *stored_var;
	zval *name;
	long count = 1;
	long value = 0;
	zval oldzval;

	if (!xc_var_caches) {
		VAR_DISABLED_WARNING();
		RETURN_NULL();
	}

	xce.ttl = XG(var_ttl);
	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z|ll", &name, &count, &xce.ttl) == FAILURE) {
		return;
	}

	/* max ttl */
	if (xc_var_maxttl && (!xce.ttl || xce.ttl > xc_var_maxttl)) {
		xce.ttl = xc_var_maxttl;
	}

	xce.data.var = &var;
	xc_entry_init_key_var(&xce, name TSRMLS_CC);

	ENTER_LOCK(xce.cache) {
		stored_xce = xc_entry_find_dmz(&xce TSRMLS_CC);
		if (stored_xce) {
			TRACE("incdec: gotxce %s", xce.name.str.val);
			/* timeout */
			if (VAR_ENTRY_EXPIRED(stored_xce)) {
				TRACE("%s", "incdec: expired");
				xc_entry_remove_dmz(stored_xce TSRMLS_CC);
				stored_xce = NULL;
			}
			else {
				/* do it in place */
				stored_var = stored_xce->data.var;
				if (Z_TYPE_P(stored_var->value) == IS_LONG) {
					zval *zv;
					stored_xce->ctime = XG(request_time);
					stored_xce->ttl   = xce.ttl;
					TRACE("%s", "incdec: islong");
					value = Z_LVAL_P(stored_var->value);
					value += (inc == 1 ? count : - count);
					RETVAL_LONG(value);

					zv = (zval *) xce.cache->shm->handlers->to_readwrite(xce.cache->shm, (char *) stored_var->value);
					Z_LVAL_P(zv) = value;
					break; /* leave lock */
				}
				else {
					TRACE("%s", "incdec: notlong");
					xc_processor_restore_zval(&oldzval, stored_xce->data.var->value, stored_xce->have_references TSRMLS_CC);
					convert_to_long(&oldzval);
					value = Z_LVAL(oldzval);
					zval_dtor(&oldzval);
				}
			}
		}
		else {
			TRACE("incdec: %s not found", xce.name.str.val);
		}

		value += (inc == 1 ? count : - count);
		RETVAL_LONG(value);
		var.value = return_value;

		if (stored_xce) {
			xce.atime = stored_xce->atime;
			xce.ctime = stored_xce->ctime;
			xce.hits  = stored_xce->hits;
			xc_entry_remove_dmz(stored_xce TSRMLS_CC);
		}
		xc_entry_store_dmz(&xce TSRMLS_CC);

	} LEAVE_LOCK(xce.cache);
}
/* }}} */
/* {{{ proto int xcache_inc(string name [, int value [, int ttl]])
   Increase an int counter in cache by specified name, create it if not exists */
PHP_FUNCTION(xcache_inc)
{
	xc_var_inc_dec(1, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto int xcache_dec(string name [, int value [, int ttl]])
   Decrease an int counter in cache by specified name, create it if not exists */
PHP_FUNCTION(xcache_dec)
{
	xc_var_inc_dec(-1, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto int xcache_get_refcount(mixed variable)
   XCache internal uses only: Get reference count of variable */
PHP_FUNCTION(xcache_get_refcount)
{
	zval *variable;
	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &variable) == FAILURE) {
		RETURN_NULL();
	}

	RETURN_LONG(Z_REFCOUNT(*variable));
}
/* }}} */
/* {{{ proto bool xcache_get_isref(mixed variable)
   XCache internal uses only: Check if variable data is marked referenced */
ZEND_BEGIN_ARG_INFO_EX(arginfo_xcache_get_isref, 0, 0, 1)
	ZEND_ARG_INFO(1, variable)
ZEND_END_ARG_INFO()

PHP_FUNCTION(xcache_get_isref)
{
	zval *variable;
	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &variable) == FAILURE) {
		RETURN_NULL();
	}

	RETURN_BOOL(Z_ISREF(*variable) && Z_REFCOUNT(*variable) >= 3);
}
/* }}} */
#ifdef HAVE_XCACHE_DPRINT
/* {{{ proto bool  xcache_dprint(mixed value)
   Prints variable (or value) internal struct (debug only) */
PHP_FUNCTION(xcache_dprint)
{
	zval *value;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &value) == FAILURE) {
		return;
	}
	xc_dprint_zval(value, 0 TSRMLS_CC);
}
/* }}} */
#endif
/* {{{ proto string xcache_asm(string filename)
 */
#ifdef HAVE_XCACHE_ASSEMBLER
PHP_FUNCTION(xcache_asm)
{
}
#endif
/* }}} */
#ifdef HAVE_XCACHE_DISASSEMBLER
/* {{{ proto array  xcache_dasm_file(string filename)
   Disassemble file into opcode array by filename */
PHP_FUNCTION(xcache_dasm_file)
{
	char *filename;
	int filename_len;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &filename, &filename_len) == FAILURE) {
		return;
	}
	if (!filename_len) RETURN_FALSE;

	xc_dasm_file(return_value, filename TSRMLS_CC);
}
/* }}} */
/* {{{ proto array  xcache_dasm_string(string code)
   Disassemble php code into opcode array */
PHP_FUNCTION(xcache_dasm_string)
{
	zval *code;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &code) == FAILURE) {
		return;
	}
	xc_dasm_string(return_value, code TSRMLS_CC);
}
/* }}} */
#endif
/* {{{ proto string xcache_encode(string filename)
   Encode php file into XCache opcode encoded format */
#ifdef HAVE_XCACHE_ENCODER
PHP_FUNCTION(xcache_encode)
{
}
#endif
/* }}} */
/* {{{ proto bool xcache_decode_file(string filename)
   Decode(load) opcode from XCache encoded format file */
#ifdef HAVE_XCACHE_DECODER
PHP_FUNCTION(xcache_decode_file)
{
}
#endif
/* }}} */
/* {{{ proto bool xcache_decode_string(string data)
   Decode(load) opcode from XCache encoded format data */
#ifdef HAVE_XCACHE_DECODER
PHP_FUNCTION(xcache_decode_string)
{
}
#endif
/* }}} */
/* {{{ xc_call_getter */
typedef const char *(xc_name_getter_t)(zend_uchar type);
static void xc_call_getter(xc_name_getter_t getter, int count, INTERNAL_FUNCTION_PARAMETERS)
{
	long spec;
	const char *name;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &spec) == FAILURE) {
		return;
	}
	if (spec >= 0 && spec < count) {
		name = getter((zend_uchar) spec);
		if (name) {
			/* RETURN_STRING */
			int len = strlen(name);
			return_value->value.str.len = len;
			return_value->value.str.val = estrndup(name, len);
			return_value->type = IS_STRING; 
			return;
		}
	}
	RETURN_NULL();
}
/* }}} */
/* {{{ proto string xcache_get_op_type(int op_type) */
PHP_FUNCTION(xcache_get_op_type)
{
	xc_call_getter(xc_get_op_type, xc_get_op_type_count(), INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto string xcache_get_data_type(int type) */
PHP_FUNCTION(xcache_get_data_type)
{
	xc_call_getter(xc_get_data_type, xc_get_data_type_count(), INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto string xcache_get_opcode(int opcode) */
PHP_FUNCTION(xcache_get_opcode)
{
	xc_call_getter(xc_get_opcode, xc_get_opcode_count(), INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto string xcache_get_op_spec(int op_type) */
PHP_FUNCTION(xcache_get_op_spec)
{
	xc_call_getter(xc_get_op_spec, xc_get_op_spec_count(), INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
#ifdef HAVE_XCACHE_OPCODE_SPEC_DEF
/* {{{ proto string xcache_get_opcode_spec(int opcode) */
PHP_FUNCTION(xcache_get_opcode_spec)
{
	long spec;
	const xc_opcode_spec_t *opspec;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &spec) == FAILURE) {
		return;
	}
	if ((zend_uchar) spec <= xc_get_opcode_spec_count()) {
		opspec = xc_get_opcode_spec((zend_uchar) spec);
		if (opspec) {
			array_init(return_value);
			add_assoc_long_ex(return_value, ZEND_STRS("ext"), opspec->ext);
			add_assoc_long_ex(return_value, ZEND_STRS("op1"), opspec->op1);
			add_assoc_long_ex(return_value, ZEND_STRS("op2"), opspec->op2);
			add_assoc_long_ex(return_value, ZEND_STRS("res"), opspec->res);
			return;
		}
	}
	RETURN_NULL();
}
/* }}} */
#endif
/* {{{ proto mixed xcache_get_special_value(zval value)
   XCache internal use only: For decompiler to get static value with type fixed */
PHP_FUNCTION(xcache_get_special_value)
{
	zval *value;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &value) == FAILURE) {
		return;
	}

	switch ((Z_TYPE_P(value) & IS_CONSTANT_TYPE_MASK)) {
	case IS_CONSTANT:
		*return_value = *value;
		zval_copy_ctor(return_value);
		return_value->type = UNISW(IS_STRING, UG(unicode) ? IS_UNICODE : IS_STRING);
		break;

	case IS_CONSTANT_ARRAY:
		*return_value = *value;
		zval_copy_ctor(return_value);
		return_value->type = IS_ARRAY;
		break;

	default:
		RETURN_NULL();
	}
}
/* }}} */
/* {{{ proto int xcache_get_type(zval value)
   XCache internal use only for disassembler to get variable type in engine level */
PHP_FUNCTION(xcache_get_type)
{
	zval *value;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &value) == FAILURE) {
		return;
	}

	RETURN_LONG(Z_TYPE_P(value));
}
/* }}} */
/* {{{ proto string xcache_coredump(int op_type) */
PHP_FUNCTION(xcache_coredump)
{
	if (xc_test) {
		raise(SIGSEGV);
	}
	else {
		php_error_docref(NULL TSRMLS_CC, E_WARNING, "xcache.test must be enabled to test xcache_coredump()");
	}
}
/* }}} */
/* {{{ proto string xcache_is_autoglobal(string name) */
PHP_FUNCTION(xcache_is_autoglobal)
{
	char *name;
	int name_len;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &name, &name_len) == FAILURE) {
		return;
	}

	RETURN_BOOL(zend_hash_exists(CG(auto_globals), name, name_len + 1));
}
/* }}} */
static zend_function_entry xcache_functions[] = /* {{{ */
{
	PHP_FE(xcache_count,             NULL)
	PHP_FE(xcache_info,              NULL)
	PHP_FE(xcache_list,              NULL)
	PHP_FE(xcache_clear_cache,       NULL)
	PHP_FE(xcache_coredump,          NULL)
#ifdef HAVE_XCACHE_ASSEMBLER
	PHP_FE(xcache_asm,               NULL)
#endif
#ifdef HAVE_XCACHE_DISASSEMBLER
	PHP_FE(xcache_dasm_file,         NULL)
	PHP_FE(xcache_dasm_string,       NULL)
#endif
#ifdef HAVE_XCACHE_ENCODER
	PHP_FE(xcache_encode,            NULL)
#endif
#ifdef HAVE_XCACHE_DECODER
	PHP_FE(xcache_decode_file,       NULL)
	PHP_FE(xcache_decode_string,     NULL)
#endif
#ifdef HAVE_XCACHE_COVERAGER
	PHP_FE(xcache_coverager_decode,  NULL)
	PHP_FE(xcache_coverager_start,   NULL)
	PHP_FE(xcache_coverager_stop,    NULL)
	PHP_FE(xcache_coverager_get,     NULL)
#endif
	PHP_FE(xcache_get_special_value, NULL)
	PHP_FE(xcache_get_type,          NULL)
	PHP_FE(xcache_get_op_type,       NULL)
	PHP_FE(xcache_get_data_type,     NULL)
	PHP_FE(xcache_get_opcode,        NULL)
#ifdef HAVE_XCACHE_OPCODE_SPEC_DEF
	PHP_FE(xcache_get_opcode_spec,   NULL)
#endif
	PHP_FE(xcache_is_autoglobal,     NULL)
	PHP_FE(xcache_inc,               NULL)
	PHP_FE(xcache_dec,               NULL)
	PHP_FE(xcache_get,               NULL)
	PHP_FE(xcache_set,               NULL)
	PHP_FE(xcache_isset,             NULL)
	PHP_FE(xcache_unset,             NULL)
	PHP_FE(xcache_unset_by_prefix,   NULL)
	PHP_FE(xcache_get_refcount,      NULL)
	PHP_FE(xcache_get_isref,         arginfo_xcache_get_isref)
#ifdef HAVE_XCACHE_DPRINT
	PHP_FE(xcache_dprint,            NULL)
#endif
	{NULL, NULL,                     NULL}
};
/* }}} */

/* old signal handlers {{{ */
typedef void (*xc_sighandler_t)(int);
#define FOREACH_SIG(sig) static xc_sighandler_t old_##sig##_handler = NULL
#include "foreachcoresig.h"
#undef FOREACH_SIG
/* }}} */
static void xcache_signal_handler(int sig);
static void xcache_restore_signal_handler() /* {{{ */
{
#define FOREACH_SIG(sig) do { \
	if (old_##sig##_handler != xcache_signal_handler) { \
		signal(sig, old_##sig##_handler); \
	} \
	else { \
		signal(sig, SIG_DFL); \
	} \
} while (0)
#include "foreachcoresig.h"
#undef FOREACH_SIG
}
/* }}} */
static void xcache_init_signal_handler() /* {{{ */
{
#define FOREACH_SIG(sig) \
	old_##sig##_handler = signal(sig, xcache_signal_handler)
#include "foreachcoresig.h"
#undef FOREACH_SIG
}
/* }}} */
static void xcache_signal_handler(int sig) /* {{{ */
{
	xcache_restore_signal_handler();
	if (xc_coredump_dir && xc_coredump_dir[0]) {
		chdir(xc_coredump_dir);
	}
	raise(sig);
}
/* }}} */

/* {{{ PHP_INI */

static PHP_INI_MH(xc_OnUpdateDummy)
{
	return SUCCESS;
}

static PHP_INI_MH(xc_OnUpdateULong)
{
	zend_ulong *p = (zend_ulong *) mh_arg1;

	*p = (zend_ulong) atoi(new_value);
	return SUCCESS;
}

static PHP_INI_MH(xc_OnUpdateBool)
{
	zend_bool *p = (zend_bool *)mh_arg1;

	if (strncasecmp("on", new_value, sizeof("on"))) {
		*p = (zend_bool) atoi(new_value);
	}
	else {
		*p = (zend_bool) 1;
	}
	return SUCCESS;
}

static PHP_INI_MH(xc_OnUpdateString)
{
	char **p = (char**)mh_arg1;
	if (*p) {
		pefree(*p, 1);
	}
	*p = pemalloc(strlen(new_value) + 1, 1);
	strcpy(*p, new_value);
	return SUCCESS;
}

#ifndef ZEND_ENGINE_2
#define OnUpdateLong OnUpdateInt
#endif

#ifdef ZEND_WIN32
#	define DEFAULT_PATH "xcache"
#else
#	define DEFAULT_PATH "/dev/zero"
#endif
PHP_INI_BEGIN()
	PHP_INI_ENTRY1     ("xcache.mmap_path",     DEFAULT_PATH, PHP_INI_SYSTEM, xc_OnUpdateString,   &xc_mmap_path)
	PHP_INI_ENTRY1     ("xcache.coredump_directory",      "", PHP_INI_SYSTEM, xc_OnUpdateString,   &xc_coredump_dir)
	PHP_INI_ENTRY1     ("xcache.test",                   "0", PHP_INI_SYSTEM, xc_OnUpdateBool,     &xc_test)
	PHP_INI_ENTRY1     ("xcache.readonly_protection",    "0", PHP_INI_SYSTEM, xc_OnUpdateBool,     &xc_readonly_protection)
	/* opcode cache */
	PHP_INI_ENTRY1     ("xcache.size",                   "0", PHP_INI_SYSTEM, xc_OnUpdateDummy,    NULL)
	PHP_INI_ENTRY1     ("xcache.count",                  "1", PHP_INI_SYSTEM, xc_OnUpdateDummy,    NULL)
	PHP_INI_ENTRY1     ("xcache.slots",                 "8K", PHP_INI_SYSTEM, xc_OnUpdateDummy,    NULL)
	PHP_INI_ENTRY1     ("xcache.shm_scheme",          "mmap", PHP_INI_SYSTEM, xc_OnUpdateString,   &xc_shm_scheme)
	PHP_INI_ENTRY1     ("xcache.ttl",                    "0", PHP_INI_SYSTEM, xc_OnUpdateULong,    &xc_php_ttl)
	PHP_INI_ENTRY1     ("xcache.gc_interval",            "0", PHP_INI_SYSTEM, xc_OnUpdateULong,    &xc_php_gc_interval)
	/* var cache */
	PHP_INI_ENTRY1     ("xcache.var_size",               "0", PHP_INI_SYSTEM, xc_OnUpdateDummy,    NULL)
	PHP_INI_ENTRY1     ("xcache.var_count",              "1", PHP_INI_SYSTEM, xc_OnUpdateDummy,    NULL)
	PHP_INI_ENTRY1     ("xcache.var_slots",             "8K", PHP_INI_SYSTEM, xc_OnUpdateDummy,    NULL)
	PHP_INI_ENTRY1     ("xcache.var_maxttl",             "0", PHP_INI_SYSTEM, xc_OnUpdateULong,    &xc_var_maxttl)
	PHP_INI_ENTRY1     ("xcache.var_gc_interval",      "120", PHP_INI_SYSTEM, xc_OnUpdateULong,    &xc_var_gc_interval)

	STD_PHP_INI_BOOLEAN("xcache.cacher",                 "1", PHP_INI_ALL,    OnUpdateBool,        cacher,            zend_xcache_globals, xcache_globals)
	STD_PHP_INI_BOOLEAN("xcache.stat",                   "1", PHP_INI_ALL,    OnUpdateBool,        stat,              zend_xcache_globals, xcache_globals)
	STD_PHP_INI_BOOLEAN("xcache.admin.enable_auth",      "1", PHP_INI_SYSTEM, OnUpdateBool,        auth_enabled,      zend_xcache_globals, xcache_globals)
#ifdef HAVE_XCACHE_OPTIMIZER
	STD_PHP_INI_BOOLEAN("xcache.optimizer",              "0", PHP_INI_ALL,    OnUpdateBool,        optimizer,         zend_xcache_globals, xcache_globals)
#endif
	STD_PHP_INI_ENTRY  ("xcache.var_ttl",                "0", PHP_INI_ALL,    OnUpdateLong,        var_ttl,           zend_xcache_globals, xcache_globals)
#ifdef HAVE_XCACHE_COVERAGER
	STD_PHP_INI_BOOLEAN("xcache.coverager"      ,        "0", PHP_INI_ALL,    OnUpdateBool,        coverager,         zend_xcache_globals, xcache_globals)
	PHP_INI_ENTRY1     ("xcache.coveragedump_directory",  "", PHP_INI_SYSTEM, xc_OnUpdateDummy,    NULL)
#endif
PHP_INI_END()
/* }}} */
/* {{{ PHP_MINFO_FUNCTION(xcache) */
static PHP_MINFO_FUNCTION(xcache)
{
	char buf[100];
	char *ptr;
	int left, len;
	xc_shm_scheme_t *scheme;
	char *covdumpdir;

	php_info_print_table_start();
	php_info_print_table_header(2, "XCache Support", "enabled");
	php_info_print_table_row(2, "Version", XCACHE_VERSION);
	php_info_print_table_row(2, "Modules Built", XCACHE_MODULES);
	php_info_print_table_row(2, "Readonly Protection", xc_readonly_protection ? "enabled" : "N/A");
#ifdef ZEND_ENGINE_2_1
	ptr = php_format_date("Y-m-d H:i:s", sizeof("Y-m-d H:i:s") - 1, xc_init_time, 1 TSRMLS_CC);
	php_info_print_table_row(2, "Cache Init Time", ptr);
	efree(ptr);
#else
	snprintf(buf, sizeof(buf), "%lu", (long unsigned) xc_init_time);
	php_info_print_table_row(2, "Cache Init Time", buf);
#endif

#ifdef ZTS
	snprintf(buf, sizeof(buf), "%lu.%lu", xc_init_instance_id, xc_init_instance_subid);
#else
	snprintf(buf, sizeof(buf), "%lu", xc_init_instance_id);
#endif
	php_info_print_table_row(2, "Cache Instance Id", buf);

	if (xc_php_size) {
		ptr = _php_math_number_format(xc_php_size, 0, '.', ',');
		snprintf(buf, sizeof(buf), "enabled, %s bytes, %d split(s), with %d slots each", ptr, xc_php_hcache.size, xc_php_hentry.size);
		php_info_print_table_row(2, "Opcode Cache", buf);
		efree(ptr);
	}
	else {
		php_info_print_table_row(2, "Opcode Cache", "disabled");
	}
	if (xc_var_size) {
		ptr = _php_math_number_format(xc_var_size, 0, '.', ',');
		snprintf(buf, sizeof(buf), "enabled, %s bytes, %d split(s), with %d slots each", ptr, xc_var_hcache.size, xc_var_hentry.size);
		php_info_print_table_row(2, "Variable Cache", buf);
		efree(ptr);
	}
	else {
		php_info_print_table_row(2, "Variable Cache", "disabled");
	}

	left = sizeof(buf);
	ptr = buf;
	buf[0] = '\0';
	for (scheme = xc_shm_scheme_first(); scheme; scheme = xc_shm_scheme_next(scheme)) {
		len = snprintf(ptr, left, ptr == buf ? "%s" : ", %s", xc_shm_scheme_name(scheme));
		left -= len;
		ptr += len;
	}
	php_info_print_table_row(2, "Shared Memory Schemes", buf);

#ifdef HAVE_XCACHE_COVERAGER
	if (cfg_get_string("xcache.coveragedump_directory", &covdumpdir) != SUCCESS || !covdumpdir[0]) {
		covdumpdir = NULL;
	}
	php_info_print_table_row(2, "Coverage Auto Dumper", XG(coverager) && covdumpdir ? "enabled" : "disabled");
#endif
	php_info_print_table_end();

	DISPLAY_INI_ENTRIES();
}
/* }}} */
/* {{{ extension startup */
static void xc_zend_extension_register(zend_extension *new_extension, DL_HANDLE handle)
{
	zend_extension extension;

	extension = *new_extension;
	extension.handle = handle;

	zend_extension_dispatch_message(ZEND_EXTMSG_NEW_EXTENSION, &extension);

	zend_llist_prepend_element(&zend_extensions, &extension);
	TRACE("%s", "registered");
}

static zend_llist_element *xc_llist_get_element_by_zend_extension(zend_llist *l, const char *extension_name)
{
	zend_llist_element *element;

	for (element = zend_extensions.head; element; element = element->next) {
		zend_extension *extension = (zend_extension *) element->data;

		if (!strcmp(extension->name, extension_name)) {
			return element;
		}
	}
	return NULL;
}

static void xc_llist_prepend(zend_llist *l, zend_llist_element *element)
{
	element->next = l->head;
	element->prev = NULL;
	if (l->head) {
		l->head->prev = element;
	}
	else {
		l->tail = element;
	}
	l->head = element;
	++l->count;
}

static void xc_llist_unlink(zend_llist *l, zend_llist_element *element)
{
	if ((element)->prev) {
		(element)->prev->next = (element)->next;
	}
	else {
		(l)->head = (element)->next;
	}

	if ((element)->next) {
		(element)->next->prev = (element)->prev;
	}
	else {
		(l)->tail = (element)->prev;
	}

	--l->count;
}

static int xc_zend_extension_startup(zend_extension *extension)
{
	if (extension->startup) {
		if (extension->startup(extension) != SUCCESS) {
			return FAILURE;
		}
	}
	return SUCCESS;
}
/* }}} */
static int xc_ptr_compare_func(void *p1, void *p2) /* {{{ */
{
	return p1 == p2;
}
/* }}} */
static int xc_zend_remove_extension(zend_extension *extension) /* {{{ */
{
	llist_dtor_func_t dtor;

	assert(extension);
	dtor = zend_extensions.dtor; /* avoid dtor */
	zend_extensions.dtor = NULL;
	zend_llist_del_element(&zend_extensions, extension, xc_ptr_compare_func);
	zend_extensions.dtor = dtor;
	return SUCCESS;
}
/* }}} */
static int xc_config_hash(xc_hash_t *p, char *name, char *default_value) /* {{{ */
{
	int bits, size;
	char *value;

	if (cfg_get_string(name, &value) != SUCCESS) {
		value = default_value;
	}

	p->size = zend_atoi(value, strlen(value));
	for (size = 1, bits = 1; size < p->size; bits ++, size <<= 1) {
		/* empty body */
	}
	p->size = size;
	p->bits = bits;
	p->mask = size - 1;

	return SUCCESS;
}
/* }}} */
static int xc_config_long(zend_ulong *p, char *name, char *default_value) /* {{{ */
{
	char *value;

	if (cfg_get_string(name, &value) != SUCCESS) {
		value = default_value;
	}

	*p = zend_atol(value, strlen(value));
	return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINIT_FUNCTION(xcache) */
static PHP_MINIT_FUNCTION(xcache)
{
	char *env;
	zend_extension *ext;
	zend_llist_position lpos;

	xc_module_gotup = 1;
	if (!xc_zend_extension_gotup) {
		xc_zend_extension_register(&zend_extension_entry, 0);
		xc_zend_extension_startup(&zend_extension_entry);
		xc_zend_extension_faked = 1;
	}

	ext = zend_get_extension("Zend Optimizer");
	if (ext) {
		/* zend_optimizer.optimization_level>0 is not compatible with other cacher, disabling */
		ext->op_array_handler = NULL;
	}
	/* cache if there's an op_array_ctor */
	for (ext = zend_llist_get_first_ex(&zend_extensions, &lpos);
			ext;
			ext = zend_llist_get_next_ex(&zend_extensions, &lpos)) {
		if (ext->op_array_ctor) {
			xc_have_op_array_ctor = 1;
			break;
		}
	}


#ifndef PHP_GINIT
	ZEND_INIT_MODULE_GLOBALS(xcache, xc_init_globals, xc_shutdown_globals);
#endif
	REGISTER_INI_ENTRIES();

	xc_config_long(&xc_php_size,       "xcache.size",        "0");
	xc_config_hash(&xc_php_hcache,     "xcache.count",       "1");
	xc_config_hash(&xc_php_hentry,     "xcache.slots",      "8K");

	xc_config_long(&xc_var_size,       "xcache.var_size",    "0");
	xc_config_hash(&xc_var_hcache,     "xcache.var_count",   "1");
	xc_config_hash(&xc_var_hentry,     "xcache.var_slots",  "8K");

	if (strcmp(sapi_module.name, "cli") == 0) {
		if ((env = getenv("XCACHE_TEST")) != NULL) {
			zend_alter_ini_entry("xcache.test", sizeof("xcache.test"), env, strlen(env) + 1, PHP_INI_SYSTEM, PHP_INI_STAGE_STARTUP);
		}
		if (!xc_test) {
			/* disable cache for cli except for testing */
			xc_php_size = xc_var_size = 0;
		}
	}

	if (xc_php_size <= 0) {
		xc_php_size = xc_php_hcache.size = 0;
	}
	if (xc_var_size <= 0) {
		xc_var_size = xc_var_hcache.size = 0;
	}

	if (xc_coredump_dir && xc_coredump_dir[0]) {
		xcache_init_signal_handler();
	}

	xc_init_constant(module_number TSRMLS_CC);
	xc_shm_init_modules();

	if ((xc_php_size || xc_var_size) && xc_mmap_path && xc_mmap_path[0]) {
		if (xc_init(module_number TSRMLS_CC) != SUCCESS) {
			zend_error(E_ERROR, "XCache: Cannot init");
			goto err_init;
		}
		xc_initized = 1;
		xc_init_time = time(NULL);
#ifdef PHP_WIN32
		xc_init_instance_id = GetCurrentProcessId();
#else
		xc_init_instance_id = getpid();
#endif
#ifdef ZTS
		xc_init_instance_subid = tsrm_thread_id();
#endif
	}

#ifdef HAVE_XCACHE_COVERAGER
	xc_coverager_init(module_number TSRMLS_CC);
#endif

	return SUCCESS;

err_init:
	return FAILURE;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION(xcache) */
static PHP_MSHUTDOWN_FUNCTION(xcache)
{
	if (xc_initized) {
		xc_destroy();
	}
	if (xc_mmap_path) {
		pefree(xc_mmap_path, 1);
		xc_mmap_path = NULL;
	}
	if (xc_shm_scheme) {
		pefree(xc_shm_scheme, 1);
		xc_shm_scheme = NULL;
	}

#ifdef HAVE_XCACHE_COVERAGER
	xc_coverager_destroy();
#endif

	if (xc_coredump_dir && xc_coredump_dir[0]) {
		xcache_restore_signal_handler();
	}
	if (xc_coredump_dir) {
		pefree(xc_coredump_dir, 1);
		xc_coredump_dir = NULL;
	}
#ifndef PHP_GINIT
#	ifdef ZTS
	ts_free_id(xcache_globals_id);
#	else
	xc_shutdown_globals(&xcache_globals TSRMLS_CC);
#	endif
#endif

	if (xc_zend_extension_faked) {
		zend_extension *ext = zend_get_extension(XCACHE_NAME);
		if (ext) {
			if (ext->shutdown) {
				ext->shutdown(ext);
			}
			xc_zend_remove_extension(ext);
		}
	}
	UNREGISTER_INI_ENTRIES();

	xc_module_gotup = 0;
	xc_zend_extension_gotup = 0;
	xc_zend_extension_faked = 0;

	return SUCCESS;
}
/* }}} */
/* {{{ PHP_RINIT_FUNCTION(xcache) */
static PHP_RINIT_FUNCTION(xcache)
{
	xc_request_init(TSRMLS_C);
	return SUCCESS;
}
/* }}} */
/* {{{ PHP_RSHUTDOWN_FUNCTION(xcache) */
#ifndef ZEND_ENGINE_2
static PHP_RSHUTDOWN_FUNCTION(xcache)
#else
static ZEND_MODULE_POST_ZEND_DEACTIVATE_D(xcache)
#endif
{
#ifdef ZEND_ENGINE_2
	TSRMLS_FETCH();
#endif

	xc_request_shutdown(TSRMLS_C);
	return SUCCESS;
}
/* }}} */
/* {{{ module dependencies */
#if ZEND_MODULE_API_NO >= 20050922
static const zend_module_dep xcache_module_deps[] = {
	ZEND_MOD_REQUIRED("standard")
	ZEND_MOD_CONFLICTS("apc")
	ZEND_MOD_CONFLICTS("eAccelerator")
	ZEND_MOD_CONFLICTS("Turck MMCache")
	{NULL, NULL, NULL}
};
#endif
/* }}} */ 
/* {{{ module definition structure */

zend_module_entry xcache_module_entry = {
#if ZEND_MODULE_API_NO >= 20050922
	STANDARD_MODULE_HEADER_EX,
	NULL,
	xcache_module_deps,
#else
	STANDARD_MODULE_HEADER,
#endif
	XCACHE_NAME,
	xcache_functions,
	PHP_MINIT(xcache),
	PHP_MSHUTDOWN(xcache),
	PHP_RINIT(xcache),
#ifndef ZEND_ENGINE_2
	PHP_RSHUTDOWN(xcache),
#else
	NULL,
#endif
	PHP_MINFO(xcache),
	XCACHE_VERSION,
#ifdef PHP_GINIT
	PHP_MODULE_GLOBALS(xcache),
	PHP_GINIT(xcache),
	PHP_GSHUTDOWN(xcache),
#endif
#ifdef ZEND_ENGINE_2
	ZEND_MODULE_POST_ZEND_DEACTIVATE_N(xcache),
#else
	NULL,
	NULL,
#endif
	STANDARD_MODULE_PROPERTIES_EX
};

#ifdef COMPILE_DL_XCACHE
ZEND_GET_MODULE(xcache)
#endif
/* }}} */
static startup_func_t xc_last_ext_startup;
static int xc_zend_startup_last(zend_extension *extension) /* {{{ */
{
	/* restore */
	extension->startup = xc_last_ext_startup;
	if (extension->startup) {
		if (extension->startup(extension) != SUCCESS) {
			return FAILURE;
		}
	}
	assert(xc_llist_zend_extension);
	xc_llist_prepend(&zend_extensions, xc_llist_zend_extension);
	if (!xc_module_gotup) {
		return zend_startup_module(&xcache_module_entry);
	}
	return SUCCESS;
}
/* }}} */
ZEND_DLEXPORT int xcache_zend_startup(zend_extension *extension) /* {{{ */
{
	xc_zend_extension_gotup = 1;

	if (!origin_compile_file) {
		origin_compile_file = zend_compile_file;
		zend_compile_file = xc_check_initial_compile_file;
	}

	if (zend_llist_count(&zend_extensions) > 1) {
		zend_llist_position lpos;
		zend_extension *ext;

		xc_llist_zend_extension = xc_llist_get_element_by_zend_extension(&zend_extensions, XCACHE_NAME);
		xc_llist_unlink(&zend_extensions, xc_llist_zend_extension);

		ext = (zend_extension *) zend_llist_get_last_ex(&zend_extensions, &lpos);
		assert(ext && ext != (zend_extension *) xc_llist_zend_extension->data);
		xc_last_ext_startup = ext->startup;
		ext->startup = xc_zend_startup_last;
	}
	else if (!xc_module_gotup) {
		return zend_startup_module(&xcache_module_entry);
	}
	return SUCCESS;
}
/* }}} */
ZEND_DLEXPORT void xcache_zend_shutdown(zend_extension *extension) /* {{{ */
{
	/* empty */
}
/* }}} */
ZEND_DLEXPORT void xcache_statement_handler(zend_op_array *op_array) /* {{{ */
{
#ifdef HAVE_XCACHE_COVERAGER
	xc_coverager_handle_ext_stmt(op_array, ZEND_EXT_STMT);
#endif
}
/* }}} */
ZEND_DLEXPORT void xcache_fcall_begin_handler(zend_op_array *op_array) /* {{{ */
{
#if 0
	xc_coverager_handle_ext_stmt(op_array, ZEND_EXT_FCALL_BEGIN);
#endif
}
/* }}} */
ZEND_DLEXPORT void xcache_fcall_end_handler(zend_op_array *op_array) /* {{{ */
{
#if 0
	xc_coverager_handle_ext_stmt(op_array, ZEND_EXT_FCALL_END);
#endif
}
/* }}} */
/* {{{ zend extension definition structure */
ZEND_DLEXPORT zend_extension zend_extension_entry = {
	XCACHE_NAME,
	XCACHE_VERSION,
	XCACHE_AUTHOR,
	XCACHE_URL,
	XCACHE_COPYRIGHT,
	xcache_zend_startup,
	xcache_zend_shutdown,
	NULL,           /* activate_func_t */
	NULL,           /* deactivate_func_t */
	NULL,           /* message_handler_func_t */
	NULL,           /* op_array_handler_func_t */
	xcache_statement_handler,
	xcache_fcall_begin_handler,
	xcache_fcall_end_handler,
	NULL,           /* op_array_ctor_func_t */
	NULL,           /* op_array_dtor_func_t */
	STANDARD_ZEND_EXTENSION_PROPERTIES
};

#ifndef ZEND_EXT_API
#	define ZEND_EXT_API ZEND_DLEXPORT
#endif
#if COMPILE_DL_XCACHE
ZEND_EXTENSION();
#endif
/* }}} */
