static int zend_shared_alloc_try(const zend_shared_memory_handler_entry *he, size_t requested_size, zend_shared_segment ***shared_segments_p, int *shared_segments_count, char **error_in)
{
int res;
g_shared_alloc_handler = he->handler;
g_shared_model = he->name;
ZSMMG(shared_segments) = NULL;
ZSMMG(shared_segments_count) = 0;
res = S_H(create_segments)(requested_size, shared_segments_p, shared_segments_count, error_in);
if (res) {
/* this model works! */
return res;
}
if (*shared_segments_p) {
int i;
/* cleanup */
for (i = 0; i < *shared_segments_count; i++) {
if ((*shared_segments_p)[i]->p && (*shared_segments_p)[i]->p != (void *)-1) {
S_H(detach_segment)((*shared_segments_p)[i]);
}
}
free(*shared_segments_p);
*shared_segments_p = NULL;
}
g_shared_alloc_handler = NULL;
return ALLOC_FAILURE;
}
void zend_accel_info(ZEND_MODULE_INFO_FUNC_ARGS)
{
php_info_print_table_start();
if (ZCG(enabled) && accel_startup_ok && (ZCG(counted) || ZCSG(accelerator_enabled))) {
php_info_print_table_row(2, "Opcode Caching", "Up and Running");
} else {
php_info_print_table_row(2, "Opcode Caching", "Disabled");
}
if (ZCG(enabled) && accel_startup_ok && ZCSG(accelerator_enabled) && ZCG(accel_directives).optimization_level) {
php_info_print_table_row(2, "Optimization", "Enabled");
} else {
php_info_print_table_row(2, "Optimization", "Disabled");
}
if (ZCG(enabled)) {
if (!accel_startup_ok || zps_api_failure_reason) {
php_info_print_table_row(2, "Startup Failed", zps_api_failure_reason);
} else {
char buf[32];
php_info_print_table_row(2, "Startup", "OK");
php_info_print_table_row(2, "Shared memory model", zend_accel_get_shared_model());
snprintf(buf, sizeof(buf), "%ld", ZCSG(hits));
php_info_print_table_row(2, "Cache hits", buf);
snprintf(buf, sizeof(buf), "%ld", ZSMMG(memory_exhausted)?ZCSG(misses):ZCSG(misses)-ZCSG(blacklist_misses));
php_info_print_table_row(2, "Cache misses", buf);
snprintf(buf, sizeof(buf), "%ld", ZCG(accel_directives).memory_consumption-zend_shared_alloc_get_free_memory()-ZSMMG(wasted_shared_memory));
php_info_print_table_row(2, "Used memory", buf);
snprintf(buf, sizeof(buf), "%ld", zend_shared_alloc_get_free_memory());
php_info_print_table_row(2, "Free memory", buf);
snprintf(buf, sizeof(buf), "%ld", ZSMMG(wasted_shared_memory));
php_info_print_table_row(2, "Wasted memory", buf);
#if ZEND_EXTENSION_API_NO > PHP_5_3_X_API_NO
if (ZCSG(interned_strings_start) && ZCSG(interned_strings_end) && ZCSG(interned_strings_top)) {
snprintf(buf, sizeof(buf), "%ld", ZCSG(interned_strings_top) - ZCSG(interned_strings_start));
php_info_print_table_row(2, "Interned Strings Used memory", buf);
snprintf(buf, sizeof(buf), "%ld", ZCSG(interned_strings_end) - ZCSG(interned_strings_top));
php_info_print_table_row(2, "Interned Strings Free memory", buf);
}
#endif
snprintf(buf, sizeof(buf), "%ld", ZCSG(hash).num_direct_entries);
php_info_print_table_row(2, "Cached scripts", buf);
snprintf(buf, sizeof(buf), "%ld", ZCSG(hash).num_entries);
php_info_print_table_row(2, "Cached keys", buf);
snprintf(buf, sizeof(buf), "%ld", ZCSG(hash).max_num_entries);
php_info_print_table_row(2, "Max keys", buf);
snprintf(buf, sizeof(buf), "%ld", ZCSG(oom_restarts));
php_info_print_table_row(2, "OOM restarts", buf);
snprintf(buf, sizeof(buf), "%ld", ZCSG(hash_restarts));
php_info_print_table_row(2, "Hash keys restarts", buf);
snprintf(buf, sizeof(buf), "%ld", ZCSG(manual_restarts));
php_info_print_table_row(2, "Manual restarts", buf);
}
}
php_info_print_table_end();
DISPLAY_INI_ENTRIES();
}
void *zend_shared_alloc(size_t size)
{
int i;
unsigned int block_size = ZEND_ALIGNED_SIZE(size);
#if 1
if (!ZCG(locked)) {
zend_accel_error(ACCEL_LOG_ERROR, "Shared memory lock not obtained");
}
#endif
if (block_size > ZSMMG(shared_free)) { /* No hope to find a big-enough block */
SHARED_ALLOC_FAILED();
return NULL;
}
for (i = 0; i < ZSMMG(shared_segments_count); i++) {
if (ZSMMG(shared_segments)[i]->size - ZSMMG(shared_segments)[i]->pos >= block_size) { /* found a valid block */
void *retval = (void *) (((char *) ZSMMG(shared_segments)[i]->p) + ZSMMG(shared_segments)[i]->pos);
ZSMMG(shared_segments)[i]->pos += block_size;
ZSMMG(shared_free) -= block_size;
memset(retval, 0, block_size);
ZEND_ASSERT(((zend_uintptr_t)retval & 0x7) == 0); /* should be 8 byte aligned */
return retval;
}
}
SHARED_ALLOC_FAILED();
return NULL;
}
static size_t zend_shared_alloc_get_largest_free_block(void)
{
int i;
size_t largest_block_size = 0;
for (i = 0; i < ZSMMG(shared_segments_count); i++) {
size_t block_size = ZSMMG(shared_segments)[i]->size - ZSMMG(shared_segments)[i]->pos;
if (block_size>largest_block_size) {
largest_block_size = block_size;
}
}
return largest_block_size;
}
/* {{{ proto array accelerator_get_status()
Obtain statistics information regarding code acceleration in the Zend Performance Suite */
static ZEND_FUNCTION(accelerator_get_status)
{
long reqs;
zval *memory_usage,*statistics,*scripts;
/* keep the compiler happy */
(void)ht; (void)return_value_ptr; (void)this_ptr; (void)return_value_used;
if (!ZCG(startup_ok) || !ZCSG(accelerator_enabled)) {
RETURN_FALSE;
}
array_init(return_value);
/* Trivia */
add_assoc_bool(return_value, "accelerator_enabled", 1 /*ZCG(startup_ok) && ZCSG(accelerator_enabled)*/);
add_assoc_bool(return_value, "cache_full", ZSMMG(memory_exhausted));
/* Memory usage statistics */
MAKE_STD_ZVAL(memory_usage);
array_init(memory_usage);
add_assoc_long(memory_usage, "used_memory", ZCG(accel_directives).memory_consumption-zend_shared_alloc_get_free_memory()-ZSMMG(wasted_shared_memory));
add_assoc_long(memory_usage, "free_memory", zend_shared_alloc_get_free_memory());
add_assoc_long(memory_usage, "wasted_memory", ZSMMG(wasted_shared_memory));
add_assoc_double(memory_usage, "current_wasted_percentage", (((double) ZSMMG(wasted_shared_memory))/ZCG(accel_directives).memory_consumption)*100.0);
add_assoc_zval(return_value, "memory_usage",memory_usage);
/* Accelerator statistics */
MAKE_STD_ZVAL(statistics);
array_init(statistics);
add_assoc_long(statistics, "num_cached_scripts", ZCSG(hash).num_direct_entries);
add_assoc_long(statistics, "max_cached_scripts", ZCSG(hash).max_num_entries);
add_assoc_long(statistics, "hits", ZCSG(hits));
add_assoc_long(statistics, "last_restart_time", ZCSG(last_restart_time));
add_assoc_long(statistics, "misses", ZSMMG(memory_exhausted)?ZCSG(misses):ZCSG(misses)-ZCSG(blacklist_misses));
add_assoc_long(statistics, "blacklist_misses", ZCSG(blacklist_misses));
reqs = ZCSG(hits)+ZCSG(misses);
add_assoc_double(statistics, "blacklist_miss_ratio", reqs?(((double) ZCSG(blacklist_misses))/reqs)*100.0:0);
add_assoc_double(statistics, "accelerator_hit_rate", reqs?(((double) ZCSG(hits))/reqs)*100.0:0);
add_assoc_zval(return_value, "accelerator_statistics",statistics);
/* acceleratred scripts */
scripts=accelerator_get_scripts(TSRMLS_C);
if( scripts ){
add_assoc_zval(return_value, "scripts",scripts);
}
}
void zend_shared_alloc_shutdown(void)
{
zend_shared_segment **tmp_shared_segments;
size_t shared_segments_array_size;
zend_smm_shared_globals tmp_shared_globals;
int i;
tmp_shared_globals = *smm_shared_globals;
smm_shared_globals = &tmp_shared_globals;
shared_segments_array_size = ZSMMG(shared_segments_count) * (S_H(segment_type_size)() + sizeof(void *));
tmp_shared_segments = emalloc(shared_segments_array_size);
copy_shared_segments(tmp_shared_segments, ZSMMG(shared_segments)[0], ZSMMG(shared_segments_count), S_H(segment_type_size)());
ZSMMG(shared_segments) = tmp_shared_segments;
for (i = 0; i < ZSMMG(shared_segments_count); i++) {
S_H(detach_segment)(ZSMMG(shared_segments)[i]);
}
efree(ZSMMG(shared_segments));
ZSMMG(shared_segments) = NULL;
g_shared_alloc_handler = NULL;
#ifndef ZEND_WIN32
close(lock_file);
#endif
}
void *zend_shared_alloc(size_t size)
{
int i;
unsigned int block_size = size + sizeof(zend_shared_memory_block_header);
TSRMLS_FETCH();
#if 1
if (!ZCG(locked)) {
zend_accel_error(ACCEL_LOG_ERROR, "Shared memory lock not obtained");
}
#endif
if (block_size > ZSMMG(shared_free)) { /* No hope to find a big-enough block */
SHARED_ALLOC_FAILED();
return NULL;
}
for (i = 0; i < ZSMMG(shared_segments_count); i++) {
if (ZSMMG(shared_segments)[i]->size - ZSMMG(shared_segments)[i]->pos >= block_size) { /* found a valid block */
zend_shared_memory_block_header *p = (zend_shared_memory_block_header *) (((char *) ZSMMG(shared_segments)[i]->p) + ZSMMG(shared_segments)[i]->pos);
int remainder = block_size % PLATFORM_ALIGNMENT;
void *retval;
if (remainder != 0) {
size += PLATFORM_ALIGNMENT - remainder;
block_size += PLATFORM_ALIGNMENT - remainder;
}
ZSMMG(shared_segments)[i]->pos += block_size;
ZSMMG(shared_free) -= block_size;
p->size = size;
retval = ((char *) p) + sizeof(zend_shared_memory_block_header);
memset(retval, 0, size);
return retval;
}
}
SHARED_ALLOC_FAILED();
return NULL;
}
/* {{{ proto array accelerator_get_status([bool fetch_scripts])
Obtain statistics information regarding code acceleration */
static ZEND_FUNCTION(opcache_get_status)
{
long reqs;
zval *memory_usage,*statistics,*scripts;
zend_bool fetch_scripts = 1;
/* keep the compiler happy */
(void)ht; (void)return_value_ptr; (void)this_ptr; (void)return_value_used;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|b", &fetch_scripts) == FAILURE) {
return;
}
if (!accel_startup_ok) {
RETURN_FALSE;
}
array_init(return_value);
/* Trivia */
add_assoc_bool(return_value, "opcache_enabled", ZCG(enabled) && (ZCG(counted) || ZCSG(accelerator_enabled)));
add_assoc_bool(return_value, "cache_full", ZSMMG(memory_exhausted));
add_assoc_bool(return_value, "restart_pending", ZCSG(restart_pending));
add_assoc_bool(return_value, "restart_in_progress", ZCSG(restart_in_progress));
/* Memory usage statistics */
MAKE_STD_ZVAL(memory_usage);
array_init(memory_usage);
add_assoc_long(memory_usage, "used_memory", ZCG(accel_directives).memory_consumption-zend_shared_alloc_get_free_memory()-ZSMMG(wasted_shared_memory));
add_assoc_long(memory_usage, "free_memory", zend_shared_alloc_get_free_memory());
add_assoc_long(memory_usage, "wasted_memory", ZSMMG(wasted_shared_memory));
add_assoc_double(memory_usage, "current_wasted_percentage", (((double) ZSMMG(wasted_shared_memory))/ZCG(accel_directives).memory_consumption)*100.0);
add_assoc_zval(return_value, "memory_usage", memory_usage);
/* Accelerator statistics */
MAKE_STD_ZVAL(statistics);
array_init(statistics);
add_assoc_long(statistics, "num_cached_scripts", ZCSG(hash).num_direct_entries);
add_assoc_long(statistics, "num_cached_keys", ZCSG(hash).num_entries);
add_assoc_long(statistics, "max_cached_keys", ZCSG(hash).max_num_entries);
add_assoc_long(statistics, "hits", ZCSG(hits));
add_assoc_long(statistics, "start_time", ZCSG(start_time));
add_assoc_long(statistics, "last_restart_time", ZCSG(last_restart_time));
add_assoc_long(statistics, "oom_restarts", ZCSG(oom_restarts));
add_assoc_long(statistics, "hash_restarts", ZCSG(hash_restarts));
add_assoc_long(statistics, "manual_restarts", ZCSG(manual_restarts));
add_assoc_long(statistics, "misses", ZSMMG(memory_exhausted)?ZCSG(misses):ZCSG(misses)-ZCSG(blacklist_misses));
add_assoc_long(statistics, "blacklist_misses", ZCSG(blacklist_misses));
reqs = ZCSG(hits)+ZCSG(misses);
add_assoc_double(statistics, "blacklist_miss_ratio", reqs?(((double) ZCSG(blacklist_misses))/reqs)*100.0:0);
add_assoc_double(statistics, "opcache_hit_rate", reqs?(((double) ZCSG(hits))/reqs)*100.0:0);
add_assoc_zval(return_value, "opcache_statistics", statistics);
if (fetch_scripts) {
/* accelerated scripts */
scripts = accelerator_get_scripts(TSRMLS_C);
if (scripts) {
add_assoc_zval(return_value, "scripts", scripts);
}
}
}
zend_persistent_script *zend_file_cache_script_load(zend_file_handle *file_handle)
{
zend_string *full_path = file_handle->opened_path;
int fd;
char *filename;
zend_persistent_script *script;
zend_file_cache_metainfo info;
zend_accel_hash_entry *bucket;
void *mem, *checkpoint, *buf;
int cache_it = 1;
if (!full_path) {
return NULL;
}
filename = zend_file_cache_get_bin_file_path(full_path);
fd = open(filename, O_RDONLY | O_BINARY);
if (fd < 0) {
efree(filename);
return NULL;
}
if (zend_file_cache_flock(fd, LOCK_SH) != 0) {
close(fd);
efree(filename);
return NULL;
}
if (read(fd, &info, sizeof(info)) != sizeof(info)) {
zend_accel_error(ACCEL_LOG_WARNING, "opcache cannot read from file '%s'\n", filename);
zend_file_cache_flock(fd, LOCK_UN);
close(fd);
unlink(filename);
efree(filename);
return NULL;
}
/* verify header */
if (memcmp(info.magic, "OPCACHE", 8) != 0) {
zend_accel_error(ACCEL_LOG_WARNING, "opcache cannot read from file '%s' (wrong header)\n", filename);
zend_file_cache_flock(fd, LOCK_UN);
close(fd);
unlink(filename);
efree(filename);
return NULL;
}
if (memcmp(info.system_id, ZCG(system_id), 32) != 0) {
zend_accel_error(ACCEL_LOG_WARNING, "opcache cannot read from file '%s' (wrong \"system_id\")\n", filename);
zend_file_cache_flock(fd, LOCK_UN);
close(fd);
unlink(filename);
efree(filename);
return NULL;
}
/* verify timestamp */
if (ZCG(accel_directives).validate_timestamps &&
zend_get_file_handle_timestamp(file_handle, NULL) != info.timestamp) {
if (zend_file_cache_flock(fd, LOCK_UN) != 0) {
zend_accel_error(ACCEL_LOG_WARNING, "opcache cannot unlock file '%s'\n", filename);
}
close(fd);
unlink(filename);
efree(filename);
return NULL;
}
checkpoint = zend_arena_checkpoint(CG(arena));
#ifdef __SSE2__
/* Align to 64-byte boundary */
mem = zend_arena_alloc(&CG(arena), info.mem_size + info.str_size + 64);
mem = (void*)(((zend_uintptr_t)mem + 63L) & ~63L);
#else
mem = zend_arena_alloc(&CG(arena), info.mem_size + info.str_size);
#endif
if (read(fd, mem, info.mem_size + info.str_size) != (ssize_t)(info.mem_size + info.str_size)) {
zend_accel_error(ACCEL_LOG_WARNING, "opcache cannot read from file '%s'\n", filename);
zend_file_cache_flock(fd, LOCK_UN);
close(fd);
unlink(filename);
zend_arena_release(&CG(arena), checkpoint);
efree(filename);
return NULL;
}
if (zend_file_cache_flock(fd, LOCK_UN) != 0) {
zend_accel_error(ACCEL_LOG_WARNING, "opcache cannot unlock file '%s'\n", filename);
}
close(fd);
/* verify checksum */
if (ZCG(accel_directives).file_cache_consistency_checks &&
zend_adler32(ADLER32_INIT, mem, info.mem_size + info.str_size) != info.checksum) {
zend_accel_error(ACCEL_LOG_WARNING, "corrupted file '%s'\n", filename);
unlink(filename);
zend_arena_release(&CG(arena), checkpoint);
efree(filename);
return NULL;
}
if (!ZCG(accel_directives).file_cache_only &&
!ZCSG(restart_in_progress) &&
accelerator_shm_read_lock() == SUCCESS) {
/* exclusive lock */
zend_shared_alloc_lock();
/* Check if we still need to put the file into the cache (may be it was
* already stored by another process. This final check is done under
* exclusive lock) */
bucket = zend_accel_hash_find_entry(&ZCSG(hash), full_path);
if (bucket) {
script = (zend_persistent_script *)bucket->data;
if (!script->corrupted) {
zend_shared_alloc_unlock();
zend_arena_release(&CG(arena), checkpoint);
efree(filename);
return script;
}
}
if (zend_accel_hash_is_full(&ZCSG(hash))) {
zend_accel_error(ACCEL_LOG_DEBUG, "No more entries in hash table!");
ZSMMG(memory_exhausted) = 1;
zend_accel_schedule_restart_if_necessary(ACCEL_RESTART_HASH);
zend_shared_alloc_unlock();
goto use_process_mem;
}
#ifdef __SSE2__
/* Align to 64-byte boundary */
buf = zend_shared_alloc(info.mem_size + 64);
buf = (void*)(((zend_uintptr_t)buf + 63L) & ~63L);
#else
buf = zend_shared_alloc(info.mem_size);
#endif
if (!buf) {
zend_accel_schedule_restart_if_necessary(ACCEL_RESTART_OOM);
zend_shared_alloc_unlock();
goto use_process_mem;
}
memcpy(buf, mem, info.mem_size);
} else {
use_process_mem:
buf = mem;
cache_it = 0;
}
ZCG(mem) = ((char*)mem + info.mem_size);
script = (zend_persistent_script*)((char*)buf + info.script_offset);
script->corrupted = !cache_it; /* used to check if script restored to SHM or process memory */
zend_file_cache_unserialize(script, buf);
script->corrupted = 0;
if (cache_it) {
script->dynamic_members.checksum = zend_accel_script_checksum(script);
script->dynamic_members.last_used = ZCG(request_time);
zend_accel_hash_update(&ZCSG(hash), ZSTR_VAL(script->script.filename), ZSTR_LEN(script->script.filename), 0, script);
zend_shared_alloc_unlock();
zend_arena_release(&CG(arena), checkpoint);
}
efree(filename);
return script;
}
/* {{{ proto array accelerator_get_status([bool fetch_scripts])
Obtain statistics information regarding code acceleration */
static ZEND_FUNCTION(opcache_get_status)
{
zend_long reqs;
zval memory_usage, statistics, scripts;
zend_bool fetch_scripts = 1;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|b", &fetch_scripts) == FAILURE) {
return;
}
if (!validate_api_restriction()) {
RETURN_FALSE;
}
if (!accel_startup_ok) {
RETURN_FALSE;
}
array_init(return_value);
/* Trivia */
add_assoc_bool(return_value, "opcache_enabled", ZCG(enabled) && (ZCG(counted) || ZCSG(accelerator_enabled)));
#ifdef HAVE_OPCACHE_FILE_CACHE
if (ZCG(accel_directives).file_cache) {
add_assoc_string(return_value, "file_cache", ZCG(accel_directives).file_cache);
}
if (ZCG(accel_directives).file_cache_only) {
add_assoc_bool(return_value, "file_cache_only", 1);
return;
}
#endif
add_assoc_bool(return_value, "cache_full", ZSMMG(memory_exhausted));
add_assoc_bool(return_value, "restart_pending", ZCSG(restart_pending));
add_assoc_bool(return_value, "restart_in_progress", ZCSG(restart_in_progress));
/* Memory usage statistics */
array_init(&memory_usage);
add_assoc_long(&memory_usage, "used_memory", ZCG(accel_directives).memory_consumption-zend_shared_alloc_get_free_memory()-ZSMMG(wasted_shared_memory));
add_assoc_long(&memory_usage, "free_memory", zend_shared_alloc_get_free_memory());
add_assoc_long(&memory_usage, "wasted_memory", ZSMMG(wasted_shared_memory));
add_assoc_double(&memory_usage, "current_wasted_percentage", (((double) ZSMMG(wasted_shared_memory))/ZCG(accel_directives).memory_consumption)*100.0);
add_assoc_zval(return_value, "memory_usage", &memory_usage);
if (ZCSG(interned_strings_start) && ZCSG(interned_strings_end) && ZCSG(interned_strings_top)) {
zval interned_strings_usage;
array_init(&interned_strings_usage);
add_assoc_long(&interned_strings_usage, "buffer_size", ZCSG(interned_strings_end) - ZCSG(interned_strings_start));
add_assoc_long(&interned_strings_usage, "used_memory", ZCSG(interned_strings_top) - ZCSG(interned_strings_start));
add_assoc_long(&interned_strings_usage, "free_memory", ZCSG(interned_strings_end) - ZCSG(interned_strings_top));
add_assoc_long(&interned_strings_usage, "number_of_strings", ZCSG(interned_strings).nNumOfElements);
add_assoc_zval(return_value, "interned_strings_usage", &interned_strings_usage);
}
/* Accelerator statistics */
array_init(&statistics);
add_assoc_long(&statistics, "num_cached_scripts", ZCSG(hash).num_direct_entries);
add_assoc_long(&statistics, "num_cached_keys", ZCSG(hash).num_entries);
add_assoc_long(&statistics, "max_cached_keys", ZCSG(hash).max_num_entries);
add_assoc_long(&statistics, "hits", (zend_long)ZCSG(hits));
add_assoc_long(&statistics, "start_time", ZCSG(start_time));
add_assoc_long(&statistics, "last_restart_time", ZCSG(last_restart_time));
add_assoc_long(&statistics, "oom_restarts", ZCSG(oom_restarts));
add_assoc_long(&statistics, "hash_restarts", ZCSG(hash_restarts));
add_assoc_long(&statistics, "manual_restarts", ZCSG(manual_restarts));
add_assoc_long(&statistics, "misses", ZSMMG(memory_exhausted)?ZCSG(misses):ZCSG(misses)-ZCSG(blacklist_misses));
add_assoc_long(&statistics, "blacklist_misses", ZCSG(blacklist_misses));
reqs = ZCSG(hits)+ZCSG(misses);
add_assoc_double(&statistics, "blacklist_miss_ratio", reqs?(((double) ZCSG(blacklist_misses))/reqs)*100.0:0);
add_assoc_double(&statistics, "opcache_hit_rate", reqs?(((double) ZCSG(hits))/reqs)*100.0:0);
add_assoc_zval(return_value, "opcache_statistics", &statistics);
if (fetch_scripts) {
/* accelerated scripts */
if (accelerator_get_scripts(&scripts)) {
add_assoc_zval(return_value, "scripts", &scripts);
}
}
}
int zend_shared_alloc_startup(size_t requested_size)
{
zend_shared_segment **tmp_shared_segments;
size_t shared_segments_array_size;
zend_smm_shared_globals tmp_shared_globals, *p_tmp_shared_globals;
char *error_in = NULL;
const zend_shared_memory_handler_entry *he;
int res = ALLOC_FAILURE;
/* shared_free must be valid before we call zend_shared_alloc()
* - make it temporarily point to a local variable
*/
smm_shared_globals = &tmp_shared_globals;
ZSMMG(shared_free) = requested_size; /* goes to tmp_shared_globals.shared_free */
zend_shared_alloc_create_lock();
if (ZCG(accel_directives).memory_model && ZCG(accel_directives).memory_model[0]) {
char *model = ZCG(accel_directives).memory_model;
/* "cgi" is really "shm"... */
if (strncmp(ZCG(accel_directives).memory_model, "cgi", sizeof("cgi")) == 0) {
model = "shm";
}
for (he = handler_table; he->name; he++) {
if (strcmp(model, he->name) == 0) {
res = zend_shared_alloc_try(he, requested_size, &ZSMMG(shared_segments), &ZSMMG(shared_segments_count), &error_in);
if (res) {
/* this model works! */
}
break;
}
}
}
if (res == FAILED_REATTACHED) {
smm_shared_globals = NULL;
return res;
}
#if ENABLE_FILE_CACHE_FALLBACK
if (ALLOC_FALLBACK == res) {
return ALLOC_FALLBACK;
}
#endif
if (!g_shared_alloc_handler) {
/* try memory handlers in order */
for (he = handler_table; he->name; he++) {
res = zend_shared_alloc_try(he, requested_size, &ZSMMG(shared_segments), &ZSMMG(shared_segments_count), &error_in);
if (res) {
/* this model works! */
break;
}
}
}
if (!g_shared_alloc_handler) {
no_memory_bailout(requested_size, error_in);
return ALLOC_FAILURE;
}
if (res == SUCCESSFULLY_REATTACHED) {
return res;
}
#if ENABLE_FILE_CACHE_FALLBACK
if (ALLOC_FALLBACK == res) {
return ALLOC_FALLBACK;
}
#endif
shared_segments_array_size = ZSMMG(shared_segments_count) * S_H(segment_type_size)();
/* move shared_segments and shared_free to shared memory */
ZCG(locked) = 1; /* no need to perform a real lock at this point */
p_tmp_shared_globals = (zend_smm_shared_globals *) zend_shared_alloc(sizeof(zend_smm_shared_globals));
if (!p_tmp_shared_globals) {
zend_accel_error(ACCEL_LOG_FATAL, "Insufficient shared memory!");
return ALLOC_FAILURE;;
}
tmp_shared_segments = zend_shared_alloc(shared_segments_array_size + ZSMMG(shared_segments_count) * sizeof(void *));
if (!tmp_shared_segments) {
zend_accel_error(ACCEL_LOG_FATAL, "Insufficient shared memory!");
return ALLOC_FAILURE;;
}
copy_shared_segments(tmp_shared_segments, ZSMMG(shared_segments)[0], ZSMMG(shared_segments_count), S_H(segment_type_size)());
*p_tmp_shared_globals = tmp_shared_globals;
smm_shared_globals = p_tmp_shared_globals;
free(ZSMMG(shared_segments));
ZSMMG(shared_segments) = tmp_shared_segments;
ZSMMG(shared_memory_state).positions = (int *)zend_shared_alloc(sizeof(int) * ZSMMG(shared_segments_count));
if (!ZSMMG(shared_memory_state).positions) {
zend_accel_error(ACCEL_LOG_FATAL, "Insufficient shared memory!");
return ALLOC_FAILURE;;
}
ZCG(locked) = 0;
return res;
}
