XCache is a fast, stable PHP opcode cacher that has been proven and is now running on production servers under high load. https://xcache.lighttpd.net/
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#if 0
#define XCACHE_DEBUG
#endif
#if 0
#define SHOW_DPRINT
#endif
/* {{{ macros */
#include "xc_cacher.h"
#include "xcache.h"
#include "xc_processor.h"
#include "xcache_globals.h"
#include "xcache/xc_extension.h"
#include "xcache/xc_ini.h"
#include "xcache/xc_utils.h"
#include "xcache/xc_sandbox.h"
#include "util/xc_trace.h"
#include "util/xc_vector.h"
#include "util/xc_align.h"
#include "php.h"
#include "ext/standard/info.h"
#include "ext/standard/md5.h"
#ifdef ZEND_ENGINE_2_1
#include "ext/date/php_date.h"
#endif
#include "ext/standard/php_math.h"
#include "SAPI.h"
#define VAR_ENTRY_EXPIRED(pentry) ((pentry)->ttl && XG(request_time) > (pentry)->ctime + (time_t) (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 zend_bool xc_admin_enable_auth = 1;
static xc_hash_t xc_php_hcache = { 0, 0, 0 };
static xc_hash_t xc_php_hentry = { 0, 0, 0 };
static xc_hash_t xc_var_hcache = { 0, 0, 0 };
static xc_hash_t xc_var_hentry = { 0, 0, 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 *old_compile_file = NULL;
static zend_bool xc_readonly_protection = 0;
zend_bool xc_have_op_array_ctor = 0;
typedef enum { XC_TYPE_PHP, XC_TYPE_VAR } xc_entry_type_t;
/* TODO */
static inline zend_bool xc_cache_disabled()
{
return 0;
}
/* }}} */
/* any function in *_unlocked is only safe be called within locked (single thread access) area */
static void xc_php_add_unlocked(xc_cache_t *cache, xc_entry_data_php_t *php) /* {{{ */
{
xc_entry_data_php_t **head = &(cache->phps[php->hvalue]);
php->next = *head;
*head = php;
cache->phps_count ++;
}
/* }}} */
static xc_entry_data_php_t *xc_php_store_unlocked(xc_cache_t *cache, xc_entry_data_php_t *php TSRMLS_DC) /* {{{ */
{
xc_entry_data_php_t *stored_php;
php->hits = 0;
php->refcount = 0;
stored_php = xc_processor_store_xc_entry_data_php_t(cache, php TSRMLS_CC);
if (stored_php) {
xc_php_add_unlocked(cache, stored_php);
return stored_php;
}
else {
cache->ooms ++;
return NULL;
}
}
/* }}} */
static xc_entry_data_php_t *xc_php_find_unlocked(xc_cache_t *cache, xc_entry_data_php_t *php TSRMLS_DC) /* {{{ */
{
xc_entry_data_php_t *p;
for (p = cache->phps[php->hvalue]; p; p = (xc_entry_data_php_t *) p->next) {
if (memcmp(&php->md5.digest, &p->md5.digest, sizeof(php->md5.digest)) == 0) {
p->hits ++;
return p;
}
}
return NULL;
}
/* }}} */
static void xc_php_free_unlocked(xc_cache_t *cache, xc_entry_data_php_t *php) /* {{{ */
{
cache->mem->handlers->free(cache->mem, (xc_entry_data_php_t *)php);
}
/* }}} */
static void xc_php_addref_unlocked(xc_entry_data_php_t *php) /* {{{ */
{
php->refcount ++;
}
/* }}} */
static void xc_php_release_unlocked(xc_cache_t *cache, xc_entry_data_php_t *php) /* {{{ */
{
if (-- php->refcount == 0) {
xc_entry_data_php_t **pp = &(cache->phps[php->hvalue]);
xc_entry_data_php_t *p;
for (p = *pp; p; pp = &(p->next), p = p->next) {
if (memcmp(&php->md5.digest, &p->md5.digest, sizeof(php->md5.digest)) == 0) {
/* unlink */
*pp = p->next;
xc_php_free_unlocked(cache, php);
return;
}
}
assert(0);
}
}
/* }}} */
static inline int xc_entry_equal_unlocked(xc_entry_type_t type, const xc_entry_t *entry1, const xc_entry_t *entry2 TSRMLS_DC) /* {{{ */
{
/* this function isn't required but can be in unlocked */
switch (type) {
case XC_TYPE_PHP:
{
const xc_entry_php_t *php_entry1 = (const xc_entry_php_t *) entry1;
const xc_entry_php_t *php_entry2 = (const xc_entry_php_t *) entry2;
if (php_entry1->file_inode && php_entry2->file_inode) {
zend_bool inodeIsSame = php_entry1->file_inode == php_entry2->file_inode
&& php_entry1->file_device == php_entry2->file_device;
if (XG(experimental)) {
/* new experimental behavior: quick check by inode, first */
if (!inodeIsSame) {
return 0;
}
/* and then opened_path compare */
}
else {
/* old behavior: inode check only */
return inodeIsSame;
}
}
}
assert(IS_ABSOLUTE_PATH(entry1->name.str.val, entry1->name.str.len));
assert(IS_ABSOLUTE_PATH(entry2->name.str.val, entry2->name.str.len));
return entry1->name.str.len == entry2->name.str.len
&& memcmp(entry1->name.str.val, entry2->name.str.val, entry1->name.str.len + 1) == 0;
case XC_TYPE_VAR:
#ifdef IS_UNICODE
if (entry1->name_type != entry2->name_type) {
return 0;
}
if (entry1->name_type == IS_UNICODE) {
return entry1->name.ustr.len == entry2->name.ustr.len
&& memcmp(entry1->name.ustr.val, entry2->name.ustr.val, (entry1->name.ustr.len + 1) * sizeof(UChar)) == 0;
}
#endif
return entry1->name.str.len == entry2->name.str.len
&& memcmp(entry1->name.str.val, entry2->name.str.val, entry1->name.str.len + 1) == 0;
break;
default:
assert(0);
}
return 0;
}
/* }}} */
static inline int xc_entry_has_prefix_unlocked(xc_entry_type_t type, xc_entry_t *entry, zval *prefix) /* {{{ */
{
/* this function isn't required but can be in unlocked */
#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;
}
/* }}} */
static void xc_entry_add_unlocked(xc_cache_t *cache, xc_hash_value_t entryslotid, xc_entry_t *entry) /* {{{ */
{
xc_entry_t **head = &(cache->entries[entryslotid]);
entry->next = *head;
*head = entry;
cache->entries_count ++;
}
/* }}} */
static xc_entry_t *xc_entry_store_unlocked(xc_entry_type_t type, xc_cache_t *cache, xc_hash_value_t entryslotid, xc_entry_t *entry TSRMLS_DC) /* {{{ */
{
xc_entry_t *stored_entry;
entry->hits = 0;
entry->ctime = XG(request_time);
entry->atime = XG(request_time);
stored_entry = type == XC_TYPE_PHP
? (xc_entry_t *) xc_processor_store_xc_entry_php_t(cache, (xc_entry_php_t *) entry TSRMLS_CC)
: (xc_entry_t *) xc_processor_store_xc_entry_var_t(cache, (xc_entry_var_t *) entry TSRMLS_CC);
if (stored_entry) {
xc_entry_add_unlocked(cache, entryslotid, stored_entry);
++cache->updates;
return stored_entry;
}
else {
cache->ooms ++;
return NULL;
}
}
/* }}} */
static xc_entry_php_t *xc_entry_php_store_unlocked(xc_cache_t *cache, xc_hash_value_t entryslotid, xc_entry_php_t *entry_php TSRMLS_DC) /* {{{ */
{
return (xc_entry_php_t *) xc_entry_store_unlocked(XC_TYPE_PHP, cache, entryslotid, (xc_entry_t *) entry_php TSRMLS_CC);
}
/* }}} */
static xc_entry_var_t *xc_entry_var_store_unlocked(xc_cache_t *cache, xc_hash_value_t entryslotid, xc_entry_var_t *entry_var TSRMLS_DC) /* {{{ */
{
return (xc_entry_var_t *) xc_entry_store_unlocked(XC_TYPE_VAR, cache, entryslotid, (xc_entry_t *) entry_var TSRMLS_CC);
}
/* }}} */
static void xc_entry_free_real_unlocked(xc_entry_type_t type, xc_cache_t *cache, volatile xc_entry_t *entry) /* {{{ */
{
if (type == XC_TYPE_PHP) {
xc_php_release_unlocked(cache, ((xc_entry_php_t *) entry)->php);
}
cache->mem->handlers->free(cache->mem, (xc_entry_t *)entry);
}
/* }}} */
static void xc_entry_free_unlocked(xc_entry_type_t type, xc_cache_t *cache, xc_entry_t *entry TSRMLS_DC) /* {{{ */
{
cache->entries_count --;
if ((type == XC_TYPE_PHP ? ((xc_entry_php_t *) entry)->refcount : 0) == 0) {
xc_entry_free_real_unlocked(type, cache, entry);
}
else {
entry->next = cache->deletes;
cache->deletes = entry;
entry->dtime = XG(request_time);
cache->deletes_count ++;
}
return;
}
/* }}} */
static void xc_entry_remove_unlocked(xc_entry_type_t type, xc_cache_t *cache, xc_hash_value_t entryslotid, xc_entry_t *entry TSRMLS_DC) /* {{{ */
{
xc_entry_t **pp = &(cache->entries[entryslotid]);
xc_entry_t *p;
for (p = *pp; p; pp = &(p->next), p = p->next) {
if (xc_entry_equal_unlocked(type, entry, p TSRMLS_CC)) {
/* unlink */
*pp = p->next;
xc_entry_free_unlocked(type, cache, entry TSRMLS_CC);
return;
}
}
assert(0);
}
/* }}} */
static xc_entry_t *xc_entry_find_unlocked(xc_entry_type_t type, xc_cache_t *cache, xc_hash_value_t entryslotid, xc_entry_t *entry TSRMLS_DC) /* {{{ */
{
xc_entry_t *p;
for (p = cache->entries[entryslotid]; p; p = p->next) {
if (xc_entry_equal_unlocked(type, entry, p TSRMLS_CC)) {
zend_bool fresh;
switch (type) {
case XC_TYPE_PHP:
{
xc_entry_php_t *p_php = (xc_entry_php_t *) p;
xc_entry_php_t *entry_php = (xc_entry_php_t *) entry;
fresh = p_php->file_mtime == entry_php->file_mtime && p_php->file_size == entry_php->file_size;
}
break;
case XC_TYPE_VAR:
{
fresh = !VAR_ENTRY_EXPIRED(p);
}
break;
default:
assert(0);
}
if (fresh) {
p->hits ++;
p->atime = XG(request_time);
return p;
}
xc_entry_remove_unlocked(type, cache, entryslotid, p TSRMLS_CC);
return NULL;
}
}
return NULL;
}
/* }}} */
static void xc_entry_hold_php_unlocked(xc_cache_t *cache, xc_entry_php_t *entry TSRMLS_DC) /* {{{ */
{
TRACE("hold %d:%s", entry->file_inode, entry->entry.name.str.val);
entry->refcount ++;
xc_stack_push(&XG(php_holds)[cache->cacheid], (void *)entry);
}
/* }}} */
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_unlocked(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) zend_bool name(xc_entry_t *entry TSRMLS_DC)
typedef XC_ENTRY_APPLY_FUNC((*cache_apply_unlocked_func_t));
static void xc_entry_apply_unlocked(xc_entry_type_t type, xc_cache_t *cache, cache_apply_unlocked_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_unlocked(type, cache, 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_unlocked -> xc_gc_expires_php_entry_unlocked
* xc_gc_expires_var -> xc_gc_expires_one -> xc_entry_apply_unlocked -> xc_gc_expires_var_entry_unlocked
*/
static XC_ENTRY_APPLY_FUNC(xc_gc_expires_php_entry_unlocked) /* {{{ */
{
TRACE("ttl %lu, %lu %lu", (zend_ulong) XG(request_time), (zend_ulong) entry->atime, xc_php_ttl);
if (XG(request_time) > entry->atime + (time_t) xc_php_ttl) {
return 1;
}
return 0;
}
/* }}} */
static XC_ENTRY_APPLY_FUNC(xc_gc_expires_var_entry_unlocked) /* {{{ */
{
if (VAR_ENTRY_EXPIRED(entry)) {
return 1;
}
return 0;
}
/* }}} */
static void xc_gc_expires_one(xc_entry_type_t type, xc_cache_t *cache, zend_ulong gc_interval, cache_apply_unlocked_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 + (time_t) gc_interval) {
ENTER_LOCK(cache) {
if (XG(request_time) >= cache->last_gc_expires + (time_t) gc_interval) {
cache->last_gc_expires = XG(request_time);
xc_entry_apply_unlocked(type, 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_TYPE_PHP, xc_php_caches[i], xc_php_gc_interval, xc_gc_expires_php_entry_unlocked 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_TYPE_VAR, xc_var_caches[i], xc_var_gc_interval, xc_gc_expires_var_entry_unlocked TSRMLS_CC);
}
}
/* }}} */
static XC_CACHE_APPLY_FUNC(xc_gc_delete_unlocked) /* {{{ */
{
xc_entry_t *p, **pp;
pp = &cache->deletes;
for (p = *pp; p; p = *pp) {
xc_entry_php_t *entry = (xc_entry_php_t *) p;
if (XG(request_time) - p->dtime > 3600) {
entry->refcount = 0;
/* issue warning here */
}
if (entry->refcount == 0) {
/* unlink */
*pp = p->next;
cache->deletes_count --;
xc_entry_free_real_unlocked(XC_TYPE_PHP, cache, 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_unlocked(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_unlocked(int cachetype, xc_cache_t *cache, zval *return_value TSRMLS_DC) /* {{{ */
{
zval *blocks, *hits;
size_t 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("updates"), cache->updates);
add_assoc_long_ex(return_value, ZEND_STRS("misses"), cache->updates); /* deprecated */
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_unlocked(xc_entry_type_t type, const xc_entry_t *entry, xc_hash_value_t entryslotid, int del, zval *list TSRMLS_DC) /* {{{ */
{
zval* ei;
const xc_entry_data_php_t *php;
ALLOC_INIT_ZVAL(ei);
array_init(ei);
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"), entryslotid);
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 (type) {
case XC_TYPE_PHP: {
xc_entry_php_t *entry_php = (xc_entry_php_t *) entry;
php = entry_php->php;
add_assoc_long_ex(ei, ZEND_STRS("size"), entry->size + php->size);
add_assoc_long_ex(ei, ZEND_STRS("refcount"), entry_php->refcount);
add_assoc_long_ex(ei, ZEND_STRS("phprefcount"), php->refcount);
add_assoc_long_ex(ei, ZEND_STRS("file_mtime"), entry_php->file_mtime);
add_assoc_long_ex(ei, ZEND_STRS("file_size"), entry_php->file_size);
add_assoc_long_ex(ei, ZEND_STRS("file_device"), entry_php->file_device);
add_assoc_long_ex(ei, ZEND_STRS("file_inode"), entry_php->file_inode);
#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:
add_assoc_long_ex(ei, ZEND_STRS("refcount"), 0); /* for BC only */
add_assoc_long_ex(ei, ZEND_STRS("size"), entry->size);
break;
default:
assert(0);
}
add_next_index_zval(list, ei);
}
/* }}} */
static void xc_filllist_unlocked(xc_entry_type_t type, 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_unlocked(type, e, i, 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_unlocked(XC_TYPE_PHP, e, 0, 1, list TSRMLS_CC);
}
add_assoc_zval(return_value, "deleted_list", list);
}
/* }}} */
static zend_op_array *xc_entry_install(xc_entry_php_t *entry_php TSRMLS_DC) /* {{{ */
{
zend_uint i;
xc_entry_data_php_t *p = entry_php->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(entry_php->entry.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(entry_php->entry.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(entry_php->entry.name.str.val, &ci->cest, -1,
UNISW(0, ci->type), ci->key, ci->key_size, ci->h TSRMLS_CC);
#else
xc_install_class(entry_php->entry.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
#ifdef XCACHE_ERROR_CACHING
/* restore trigger errors */
for (i = 0; i < p->compilererror_cnt; i ++) {
xc_compilererror_t *error = &p->compilererrors[i];
CG(zend_lineno) = error->lineno;
zend_error(error->type, "%s", error->error);
}
CG(zend_lineno) = 0;
#endif
i = 1;
#ifndef ZEND_ENGINE_2_2
zend_hash_add(&EG(included_files), entry_php->entry.name.str.val, entry_php->entry.name.str.len+1, (void *)&i, sizeof(int), NULL);
#endif
#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_php_t *entry_php;
for (i = 0; i < cachecount; i ++) {
s = &holds[i];
TRACE("holded %d items", xc_stack_count(s));
if (xc_stack_count(s)) {
cache = caches[i];
ENTER_LOCK(cache) {
while (xc_stack_count(s)) {
entry_php = (xc_entry_php_t *) xc_stack_pop(s);
TRACE("unhold %d:%s", entry_php->file_inode, entry_php->entry.name.str.val);
assert(entry_php->refcount > 0);
--entry_php->refcount;
}
} 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);
}
}
/* }}} */
#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_S(s, l) HASH(zend_inline_hash_func((char *) (s), (l)))
#define HASH_STR_L(s, l) HASH_STR_S((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 *entry TSRMLS_DC) /* {{{ */
{
return UNISW(NOTHING, UG(unicode) ? HASH_ZSTR_L(entry->name_type, entry->name.uni.val, entry->name.uni.len) :)
HASH_STR_L(entry->name.str.val, entry->name.str.len);
}
/* }}} */
#define xc_entry_hash_var xc_entry_hash_name
static void xc_entry_free_key_php(xc_entry_php_t *entry_php TSRMLS_DC) /* {{{ */
{
#define X_FREE(var) do {\
if (entry_php->var) { \
efree(entry_php->var); \
} \
} while (0)
X_FREE(dirpath);
#ifdef IS_UNICODE
X_FREE(ufilepath);
X_FREE(udirpath);
#endif
#undef X_FREE
}
/* }}} */
static char *xc_expand_url(const char *filepath, char *real_path TSRMLS_DC) /* {{{ */
{
if (strstr(filepath, "://") != NULL) {
size_t filepath_len = strlen(filepath);
size_t copy_len = filepath_len > MAXPATHLEN - 1 ? MAXPATHLEN - 1 : filepath_len;
memcpy(real_path, filepath, filepath_len);
real_path[copy_len] = '\0';
return real_path;
}
return expand_filepath(filepath, real_path TSRMLS_CC);
}
/* }}} */
#define XC_RESOLVE_PATH_CHECKER(name) zend_bool name(const char *filepath, size_t filepath_len, void *data TSRMLS_DC)
typedef XC_RESOLVE_PATH_CHECKER((*xc_resolve_path_checker_func_t));
static zend_bool xc_resolve_path(const char *filepath, char *path_buffer, xc_resolve_path_checker_func_t checker_func, void *data TSRMLS_DC) /* {{{ */
{
char *paths, *path;
char *tokbuf;
size_t path_buffer_len;
int size;
char tokens[] = { DEFAULT_DIR_SEPARATOR, '\0' };
int ret;
ALLOCA_FLAG(use_heap)
#if 0
if ((*filepath == '.' &&
(IS_SLASH(filepath[1]) ||
((filepath[1] == '.') && IS_SLASH(filepath[2])))) ||
IS_ABSOLUTE_PATH(filepath, strlen(filepath)) ||
!path ||
!*path) {
if (checker_func(path_buffer, path_buffer_len, data TSRMLS_CC)) {
ret = 1;
}
else {
ret = FAILURE;
}
goto finish;
}
#endif
size = strlen(PG(include_path)) + 1;
paths = (char *)my_do_alloca(size, use_heap);
memcpy(paths, PG(include_path), size);
for (path = php_strtok_r(paths, tokens, &tokbuf); path; path = php_strtok_r(NULL, tokens, &tokbuf)) {
path_buffer_len = snprintf(path_buffer, MAXPATHLEN, "%s/%s", path, filepath);
if (path_buffer_len < MAXPATHLEN - 1) {
if (checker_func(path_buffer, path_buffer_len, data TSRMLS_CC)) {
ret = 1;
goto finish;
}
}
}
/* fall back to current directory */
if (zend_is_executing(TSRMLS_C)) {
const char *executed_filename = zend_get_executed_filename(TSRMLS_C);
if (executed_filename && executed_filename[0] && executed_filename[0] != '[') {
size_t filename_len = strlen(filepath);
size_t dirname_len;
for (dirname_len = strlen(executed_filename) - 1; dirname_len > 0; --dirname_len) {
if (IS_SLASH(executed_filename[dirname_len])) {
if (dirname_len + filename_len < MAXPATHLEN - 1) {
++dirname_len; /* include tailing slash */
memcpy(path_buffer, executed_filename, dirname_len);
memcpy(path_buffer + dirname_len, filepath, filename_len);
path_buffer_len = dirname_len + filename_len;
path_buffer[path_buffer_len] = '\0';
if (checker_func(path_buffer, path_buffer_len, data TSRMLS_CC)) {
ret = 1;
goto finish;
}
}
break;
}
}
}
}
ret = 0;
finish:
my_free_alloca(paths, use_heap);
return ret;
}
/* }}} */
#ifndef ZEND_ENGINE_2_3
static XC_RESOLVE_PATH_CHECKER(xc_stat_file) /* {{{ */
{
return VCWD_STAT(filepath, (struct stat *) data) == 0 ? 1 : 0;
}
/* }}} */
static int xc_resolve_path_stat(const char *filepath, char *path_buffer, struct stat *pbuf TSRMLS_DC) /* {{{ */
{
return xc_resolve_path(filepath, path_buffer, xc_stat_file, (void *) pbuf TSRMLS_CC)
? SUCCESS
: FAILURE;
}
/* }}} */
#endif
typedef struct xc_compiler_t { /* {{{ */
/* XCache cached compile state */
const char *filename;
size_t filename_len;
const char *opened_path;
char opened_path_buffer[MAXPATHLEN];
xc_entry_hash_t entry_hash;
xc_entry_php_t new_entry;
xc_entry_data_php_t new_php;
} xc_compiler_t;
/* }}} */
typedef struct xc_entry_resolve_path_data_t { /* {{{ */
xc_compiler_t *compiler;
xc_entry_php_t **stored_entry;
} xc_entry_resolve_path_data_t;
/* }}} */
static XC_RESOLVE_PATH_CHECKER(xc_entry_resolve_path_func_unlocked) /* {{{ */
{
xc_entry_resolve_path_data_t *entry_resolve_path_data = (xc_entry_resolve_path_data_t *) data;
xc_compiler_t *compiler = entry_resolve_path_data->compiler;
compiler->new_entry.entry.name.str.val = xc_expand_url(filepath, compiler->opened_path_buffer TSRMLS_CC);
compiler->new_entry.entry.name.str.len = strlen(compiler->new_entry.entry.name.str.val);
*entry_resolve_path_data->stored_entry = (xc_entry_php_t *) xc_entry_find_unlocked(
XC_TYPE_PHP
, xc_php_caches[compiler->entry_hash.cacheid]
, compiler->entry_hash.entryslotid
, (xc_entry_t *) &compiler->new_entry
TSRMLS_CC);
return *entry_resolve_path_data->stored_entry ? 1 : 0;
}
/* }}} */
static int xc_entry_resolve_path_unlocked(xc_compiler_t *compiler, const char *filepath, xc_entry_php_t **stored_entry TSRMLS_DC) /* {{{ */
{
char path_buffer[MAXPATHLEN];
xc_entry_resolve_path_data_t entry_resolve_path_data;
entry_resolve_path_data.compiler = compiler;
entry_resolve_path_data.stored_entry = stored_entry;
return xc_resolve_path(filepath, path_buffer, xc_entry_resolve_path_func_unlocked, (void *) &entry_resolve_path_data TSRMLS_CC)
? SUCCESS
: FAILURE;
}
/* }}} */
static int xc_entry_php_quick_resolve_opened_path(xc_compiler_t *compiler, struct stat *statbuf TSRMLS_DC) /* {{{ */
{
if (strcmp(SG(request_info).path_translated, compiler->filename) == 0) {
/* sapi has already done this stat() for us */
if (statbuf) {
struct stat *sapi_stat = sapi_get_stat(TSRMLS_C);
if (!sapi_stat) {
goto giveupsapistat;
}
*statbuf = *sapi_stat;
}
compiler->opened_path = xc_expand_url(compiler->filename, compiler->opened_path_buffer TSRMLS_CC);
return SUCCESS;
}
giveupsapistat:
/* absolute path */
if (IS_ABSOLUTE_PATH(compiler->filename, strlen(compiler->filename))) {
if (statbuf && VCWD_STAT(compiler->filename, statbuf) != 0) {
return FAILURE;
}
compiler->opened_path = xc_expand_url(compiler->filename, compiler->opened_path_buffer TSRMLS_CC);
return SUCCESS;
}
/* relative path */
if (*compiler->filename == '.' && (IS_SLASH(compiler->filename[1]) || compiler->filename[1] == '.')) {
const char *ptr = compiler->filename + 1;
if (*ptr == '.') {
while (*(++ptr) == '.');
if (!IS_SLASH(*ptr)) {
return FAILURE;
}
}
if (statbuf && VCWD_STAT(compiler->filename, statbuf) != 0) {
return FAILURE;
}
compiler->opened_path = xc_expand_url(compiler->filename, compiler->opened_path_buffer TSRMLS_CC);
return SUCCESS;
}
return FAILURE;
}
/* }}} */
static int xc_entry_php_resolve_opened_path(xc_compiler_t *compiler, struct stat *statbuf TSRMLS_DC) /* {{{ */
{
if (xc_entry_php_quick_resolve_opened_path(compiler, statbuf TSRMLS_CC) == SUCCESS) {
/* opened_path resolved */
return SUCCESS;
}
/* fall back to real stat call */
else {
#ifdef ZEND_ENGINE_2_3
char *opened_path = php_resolve_path(compiler->filename, compiler->filename_len, PG(include_path) TSRMLS_CC);
if (opened_path) {
strcpy(compiler->opened_path_buffer, opened_path);
efree(opened_path);
compiler->opened_path = compiler->opened_path_buffer;
if (!statbuf || VCWD_STAT(compiler->opened_path, statbuf) == 0) {
return SUCCESS;
}
}
#else
char path_buffer[MAXPATHLEN];
if (xc_resolve_path_stat(compiler->filename, path_buffer, statbuf TSRMLS_CC) == SUCCESS) {
compiler->opened_path = xc_expand_url(path_buffer, compiler->opened_path_buffer TSRMLS_CC);
return SUCCESS;
}
#endif
}
return FAILURE;
}
/* }}} */
static int xc_entry_php_init_key(xc_compiler_t *compiler TSRMLS_DC) /* {{{ */
{
if (XG(stat)) {
struct stat buf;
time_t delta;
if (compiler->opened_path) {
if (VCWD_STAT(compiler->opened_path, &buf) != 0) {
return FAILURE;
}
}
else {
if (xc_entry_php_resolve_opened_path(compiler, &buf TSRMLS_CC) != SUCCESS) {
return FAILURE;
}
}
delta = XG(request_time) - buf.st_mtime;
if (abs(delta) < 2 && !xc_test) {