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php_memcached.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) 2009-2010 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt. |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andrei Zmievski <[email protected]> |
+----------------------------------------------------------------------+
*/
/* $ Id: $ */
/* TODO
* - set LIBKETAMA_COMPATIBLE as the default?
* - fix unserialize(serialize($memc))
* - ability to set binary protocol for sessions
*/
#include "php_memcached.h"
#include "php_memcached_private.h"
#include "php_memcached_server.h"
#include "g_fmt.h"
#ifdef HAVE_MEMCACHED_SESSION
# include "php_memcached_session.h"
#endif
#ifdef HAVE_FASTLZ_H
#include <fastlz.h>
#else
#include "fastlz/fastlz.h"
#endif
#include <zlib.h>
#ifdef HAVE_JSON_API
# include "ext/json/php_json.h"
#endif
#ifdef HAVE_MEMCACHED_IGBINARY
# include "ext/igbinary/igbinary.h"
#endif
#ifdef HAVE_MEMCACHED_MSGPACK
# include "ext/msgpack/php_msgpack.h"
#endif
/*
* This is needed because PHP 5.3.[01] does not install JSON_parser.h by default. This
* constant will move into php_json.h in the future anyway.
*/
#ifndef JSON_PARSER_DEFAULT_DEPTH
#define JSON_PARSER_DEFAULT_DEPTH 512
#endif
/****************************************
Custom options
****************************************/
#define MEMC_OPT_COMPRESSION -1001
#define MEMC_OPT_PREFIX_KEY -1002
#define MEMC_OPT_SERIALIZER -1003
#define MEMC_OPT_COMPRESSION_TYPE -1004
#define MEMC_OPT_STORE_RETRY_COUNT -1005
/****************************************
Custom result codes
****************************************/
#define MEMC_RES_PAYLOAD_FAILURE -1001
/****************************************
Payload value flags
****************************************/
#define MEMC_CREATE_MASK(start, n_bits) (((1 << n_bits) - 1) << start)
#define MEMC_MASK_TYPE MEMC_CREATE_MASK(0, 4)
#define MEMC_MASK_INTERNAL MEMC_CREATE_MASK(4, 12)
#define MEMC_MASK_USER MEMC_CREATE_MASK(16, 16)
#define MEMC_VAL_GET_TYPE(flags) ((flags) & MEMC_MASK_TYPE)
#define MEMC_VAL_SET_TYPE(flags, type) ((flags) |= ((type) & MEMC_MASK_TYPE))
#define MEMC_VAL_IS_STRING 0
#define MEMC_VAL_IS_LONG 1
#define MEMC_VAL_IS_DOUBLE 2
#define MEMC_VAL_IS_BOOL 3
#define MEMC_VAL_IS_SERIALIZED 4
#define MEMC_VAL_IS_IGBINARY 5
#define MEMC_VAL_IS_JSON 6
#define MEMC_VAL_IS_MSGPACK 7
#define MEMC_VAL_COMPRESSED (1<<0)
#define MEMC_VAL_COMPRESSION_ZLIB (1<<1)
#define MEMC_VAL_COMPRESSION_FASTLZ (1<<2)
#define MEMC_VAL_GET_FLAGS(internal_flags) ((internal_flags & MEMC_MASK_INTERNAL) >> 4)
#define MEMC_VAL_SET_FLAG(internal_flags, internal_flag) ((internal_flags) |= ((internal_flag << 4) & MEMC_MASK_INTERNAL))
#define MEMC_VAL_HAS_FLAG(internal_flags, internal_flag) ((MEMC_VAL_GET_FLAGS(internal_flags) & internal_flag) == internal_flag)
#define MEMC_VAL_DEL_FLAG(internal_flags, internal_flag) internal_flags &= ~((internal_flag << 4) & MEMC_MASK_INTERNAL)
/****************************************
User-defined flags
****************************************/
#define MEMC_VAL_GET_USER_FLAGS(flags) ((flags & MEMC_MASK_USER) >> 16)
#define MEMC_VAL_SET_USER_FLAGS(flags, udf_flags) ((flags) |= ((udf_flags << 16) & MEMC_MASK_USER))
#define MEMC_VAL_USER_FLAGS_MAX ((1 << 16) - 1)
/****************************************
"get" operation flags
****************************************/
#define MEMC_GET_PRESERVE_ORDER (1<<0)
/****************************************
Helper macros
****************************************/
#define MEMC_METHOD_INIT_VARS \
zval* object = getThis(); \
php_memc_t* i_obj = NULL; \
struct memc_obj* m_obj = NULL;
#ifndef DVAL_TO_LVAL
#ifdef _WIN64
# define DVAL_TO_LVAL(d, l) \
if ((d) > LONG_MAX) { \
(l) = (long)(unsigned long)(__int64) (d); \
} else { \
(l) = (long) (d); \
}
#else
# define DVAL_TO_LVAL(d, l) \
if ((d) > LONG_MAX) { \
(l) = (unsigned long) (d); \
} else { \
(l) = (long) (d); \
}
#endif
#endif
#define RETURN_FROM_GET RETURN_FALSE
/****************************************
Structures and definitions
****************************************/
enum memcached_compression_type {
COMPRESSION_TYPE_ZLIB = 1,
COMPRESSION_TYPE_FASTLZ = 2,
};
typedef struct {
struct memc_obj {
memcached_st *memc;
zend_bool compression;
enum memcached_serializer serializer;
enum memcached_compression_type compression_type;
#if HAVE_MEMCACHED_SASL
zend_bool has_sasl_data;
#endif
long store_retry_count;
} *obj;
zend_bool is_persistent;
zend_bool is_pristine;
int rescode;
int memc_errno;
zend_object zo;
} php_memc_t;
static inline php_memc_t *php_memc_fetch_object(zend_object *obj) {
return (php_memc_t *)((char *)(obj) - XtOffsetOf(php_memc_t, zo));
}
#define Z_MEMC_OBJ_P(zv) php_memc_fetch_object(Z_OBJ_P(zv));
#define MEMC_METHOD_FETCH_OBJECT \
i_obj = Z_MEMC_OBJ_P(object); \
m_obj = i_obj->obj; \
if (!m_obj) { \
php_error_docref(NULL, E_WARNING, "Memcached constructor was not called"); \
return; \
}
#ifdef HAVE_MEMCACHED_PROTOCOL
typedef struct {
zend_object zo;
php_memc_proto_handler_t *handler;
} php_memc_server_t;
#endif
enum {
MEMC_OP_SET,
MEMC_OP_TOUCH,
MEMC_OP_ADD,
MEMC_OP_REPLACE,
MEMC_OP_APPEND,
MEMC_OP_PREPEND
};
static zend_class_entry *memcached_ce = NULL;
static zend_class_entry *memcached_exception_ce = NULL;
static zend_object_handlers memcached_object_handlers;
#ifdef HAVE_MEMCACHED_PROTOCOL
static zend_object_handlers memcached_server_object_handlers;
static zend_class_entry *memcached_server_ce = NULL;
#endif
struct callbackContext
{
zval *array;
zval *entry;
memcached_stat_st *stats; /* for use with functions that need stats */
void *return_value;
unsigned int i; /* for use with structures mapped against servers */
};
#if HAVE_SPL
static zend_class_entry *spl_ce_RuntimeException = NULL;
#endif
#if (PHP_MAJOR_VERSION == 5 && PHP_MINOR_VERSION < 3)
const zend_fcall_info empty_fcall_info = { 0, NULL, NULL, NULL, NULL, 0, NULL, NULL, 0 };
#undef ZEND_BEGIN_ARG_INFO_EX
#define ZEND_BEGIN_ARG_INFO_EX(name, pass_rest_by_reference, return_reference, required_num_args) \
static zend_arg_info name[] = { \
{ NULL, 0, NULL, 0, 0, 0, pass_rest_by_reference, return_reference, required_num_args },
#endif
ZEND_DECLARE_MODULE_GLOBALS(php_memcached)
#ifdef COMPILE_DL_MEMCACHED
ZEND_GET_MODULE(memcached)
#endif
static PHP_INI_MH(OnUpdateCompressionType)
{
if (!new_value) {
MEMC_G(compression_type_real) = COMPRESSION_TYPE_FASTLZ;
} else if (!strcmp(new_value->val, "fastlz")) {
MEMC_G(compression_type_real) = COMPRESSION_TYPE_FASTLZ;
} else if (!strcmp(new_value->val, "zlib")) {
MEMC_G(compression_type_real) = COMPRESSION_TYPE_ZLIB;
} else {
return FAILURE;
}
return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
static PHP_INI_MH(OnUpdateSerializer)
{
if (!new_value) {
MEMC_G(serializer) = SERIALIZER_DEFAULT;
} else if (!strcmp(new_value->val, "php")) {
MEMC_G(serializer) = SERIALIZER_PHP;
#ifdef HAVE_MEMCACHED_IGBINARY
} else if (!strcmp(new_value->val, "igbinary")) {
MEMC_G(serializer) = SERIALIZER_IGBINARY;
#endif // IGBINARY
#ifdef HAVE_JSON_API
} else if (!strcmp(new_value->val, "json")) {
MEMC_G(serializer) = SERIALIZER_JSON;
} else if (!strcmp(new_value->val, "json_array")) {
MEMC_G(serializer) = SERIALIZER_JSON_ARRAY;
#endif // JSON
#ifdef HAVE_MEMCACHED_MSGPACK
} else if (!strcmp(new_value->val, "msgpack")) {
MEMC_G(serializer) = SERIALIZER_MSGPACK;
#endif // msgpack
} else {
return FAILURE;
}
return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
/* {{{ INI entries */
PHP_INI_BEGIN()
#ifdef HAVE_MEMCACHED_SESSION
STD_PHP_INI_ENTRY("memcached.sess_locking", "1", PHP_INI_ALL, OnUpdateBool, sess_locking_enabled, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_consistent_hash", "0", PHP_INI_ALL, OnUpdateBool, sess_consistent_hash_enabled, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_binary", "0", PHP_INI_ALL, OnUpdateBool, sess_binary_enabled, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_lock_wait", "150000", PHP_INI_ALL, OnUpdateLongGEZero,sess_lock_wait, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_lock_max_wait", "0", PHP_INI_ALL, OnUpdateLongGEZero, sess_lock_max_wait, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_lock_expire", "0", PHP_INI_ALL, OnUpdateLongGEZero, sess_lock_expire, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_prefix", "memc.sess.key.", PHP_INI_ALL, OnUpdateString, sess_prefix, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_number_of_replicas", "0", PHP_INI_ALL, OnUpdateLongGEZero, sess_number_of_replicas, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_randomize_replica_read", "0", PHP_INI_ALL, OnUpdateBool, sess_randomize_replica_read, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_remove_failed", "0", PHP_INI_ALL, OnUpdateBool, sess_remove_failed_enabled, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_connect_timeout", "1000", PHP_INI_ALL, OnUpdateLong, sess_connect_timeout, zend_php_memcached_globals, php_memcached_globals)
#if HAVE_MEMCACHED_SASL
STD_PHP_INI_ENTRY("memcached.sess_sasl_username", "", PHP_INI_ALL, OnUpdateString, sess_sasl_username, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_sasl_password", "", PHP_INI_ALL, OnUpdateString, sess_sasl_password, zend_php_memcached_globals, php_memcached_globals)
#endif
#endif
STD_PHP_INI_ENTRY("memcached.compression_type", "fastlz", PHP_INI_ALL, OnUpdateCompressionType, compression_type, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.compression_factor", "1.3", PHP_INI_ALL, OnUpdateReal, compression_factor, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.compression_threshold", "2000", PHP_INI_ALL, OnUpdateLong, compression_threshold, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.serializer", SERIALIZER_DEFAULT_NAME, PHP_INI_ALL, OnUpdateSerializer, serializer_name, zend_php_memcached_globals, php_memcached_globals)
#if HAVE_MEMCACHED_SASL
STD_PHP_INI_ENTRY("memcached.use_sasl", "0", PHP_INI_SYSTEM, OnUpdateBool, use_sasl, zend_php_memcached_globals, php_memcached_globals)
#endif
STD_PHP_INI_ENTRY("memcached.store_retry_count", "2", PHP_INI_ALL, OnUpdateLong, store_retry_count, zend_php_memcached_globals, php_memcached_globals)
PHP_INI_END()
/* }}} */
/****************************************
Forward declarations
****************************************/
static int php_memc_handle_error(php_memc_t *i_obj, memcached_return status);
static char *php_memc_zval_to_payload(zval *value, size_t *payload_len, uint32_t *flags, enum memcached_serializer serializer, enum memcached_compression_type compression_type);
static int php_memc_zval_from_payload(zval *value, const char *payload, size_t payload_len, uint32_t flags, enum memcached_serializer serializer);
static void php_memc_get_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_getMulti_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_store_impl(INTERNAL_FUNCTION_PARAMETERS, int op, zend_bool by_key);
static void php_memc_setMulti_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_delete_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_deleteMulti_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_getDelayed_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static memcached_return php_memc_do_cache_callback(zval *memc_obj, zend_fcall_info *fci, zend_fcall_info_cache *fcc, zend_string *key, zval *value);
static int php_memc_do_result_callback(zval *memc_obj, zend_fcall_info *fci, zend_fcall_info_cache *fcc, memcached_result_st *result);
static memcached_return php_memc_do_serverlist_callback(const memcached_st *ptr, php_memcached_instance_st instance, void *in_context);
static memcached_return php_memc_do_stats_callback(const memcached_st *ptr, php_memcached_instance_st instance, void *in_context);
static memcached_return php_memc_do_version_callback(const memcached_st *ptr, php_memcached_instance_st instance, void *in_context);
static void php_memc_destroy(struct memc_obj *m_obj, zend_bool persistent);
/****************************************
Method implementations
****************************************/
char *php_memc_printable_func (zend_fcall_info *fci, zend_fcall_info_cache *fci_cache)
{
char *buffer = NULL;
if (fci->object) {
spprintf (&buffer, 0, "%s::%s", fci->object->ce->name->val, fci_cache->function_handler->common.function_name);
} else {
if (Z_TYPE (fci->function_name) == IS_OBJECT) {
spprintf (&buffer, 0, "%s", Z_OBJCE (fci->function_name)->name->val);
}
else {
spprintf (&buffer, 0, "%s", Z_STRVAL (fci->function_name));
}
}
return buffer;
}
static zend_bool php_memcached_on_new_callback(zval *object, zend_fcall_info *fci, zend_fcall_info_cache *fci_cache, zend_string *persistent_id)
{
zend_bool ret = 1;
zval retval;
zval params[2];
if (persistent_id) {
ZVAL_STR(¶ms[1], persistent_id);
} else {
ZVAL_NULL(¶ms[1]);
}
/* Call the cb */
ZVAL_COPY(¶ms[0], object);
fci->params = params;
fci->param_count = 2;
fci->retval = &retval;
fci->no_separation = 1;
if (zend_call_function(fci, fci_cache) == FAILURE) {
char *buf = php_memc_printable_func (fci, fci_cache);
php_error_docref(NULL, E_WARNING, "Failed to invoke 'on_new' callback %s()", buf);
efree (buf);
ret = 0;
}
zval_ptr_dtor(¶ms[0]);
zval_ptr_dtor(¶ms[1]);
zval_ptr_dtor(&retval);
return ret;
}
static int le_memc, le_memc_sess;
static int php_memc_list_entry(void)
{
return le_memc;
}
/* {{{ Memcached::__construct([string persistent_id[, callback on_new[, string connection_str]]]))
Creates a Memcached object, optionally using persistent memcache connection */
static PHP_METHOD(Memcached, __construct)
{
zval *object = getThis();
php_memc_t *i_obj;
struct memc_obj *m_obj = NULL;
zend_string *persistent_id = NULL;
zend_string *conn_str = NULL;
zend_bool is_persistent = 0;
zend_string *plist_key = NULL;
zend_fcall_info fci = {0};
zend_fcall_info_cache fci_cache;
if (zend_parse_parameters_throw(ZEND_NUM_ARGS(), "|S!f!S", &persistent_id, &fci, &fci_cache, &conn_str) == FAILURE) {
return;
}
i_obj = Z_MEMC_OBJ_P(object);
i_obj->is_pristine = 0;
if (persistent_id && persistent_id->len) {
zend_resource *le;
is_persistent = 1;
plist_key = zend_string_alloc(sizeof("memcached:id=") + persistent_id->len - 1, 0);
snprintf(plist_key->val, plist_key->len + 1, "memcached:id=%s", persistent_id->val);
if ((le = zend_hash_find_ptr(&EG(persistent_list), plist_key)) != NULL) {
if (le->type == php_memc_list_entry()) {
m_obj = (struct memc_obj *) le->ptr;
}
}
i_obj->obj = m_obj;
}
i_obj->is_persistent = is_persistent;
if (!m_obj) {
m_obj = pecalloc(1, sizeof(*m_obj), is_persistent);
if (m_obj == NULL) {
if (plist_key) {
zend_string_release(plist_key);
}
php_error_docref(NULL, E_ERROR, "out of memory: cannot allocate handle");
/* not reached */
}
if (conn_str) {
m_obj->memc = php_memc_create_str(conn_str->val, conn_str->len);
if (!m_obj->memc) {
char error_buffer[1024];
if (plist_key) {
zend_string_release(plist_key);
}
#ifdef HAVE_LIBMEMCACHED_CHECK_CONFIGURATION
if (libmemcached_check_configuration(conn_str->val, conn_str->len, error_buffer, sizeof(error_buffer)) != MEMCACHED_SUCCESS) {
php_error_docref(NULL, E_ERROR, "configuration error %s", error_buffer);
} else {
php_error_docref(NULL, E_ERROR, "could not allocate libmemcached structure");
}
#else
php_error_docref(NULL, E_ERROR, "could not allocate libmemcached structure");
#endif
/* not reached */
}
} else {
m_obj->memc = memcached_create(NULL);
if (m_obj->memc == NULL) {
if (plist_key) {
zend_string_release(plist_key);
}
php_error_docref(NULL, E_ERROR, "could not allocate libmemcached structure");
/* not reached */
}
}
m_obj->serializer = MEMC_G(serializer);
m_obj->compression_type = MEMC_G(compression_type_real);
m_obj->compression = 1;
m_obj->store_retry_count = MEMC_G(store_retry_count);
i_obj->obj = m_obj;
i_obj->is_pristine = 1;
if (fci.size) { /* will be 0 when not available */
if (!php_memcached_on_new_callback(object, &fci, &fci_cache, persistent_id) || EG(exception)) {
/* error calling or exception thrown from callback */
if (plist_key) {
zend_string_release(plist_key);
}
i_obj->obj = NULL;
if (is_persistent) {
php_memc_destroy(m_obj, is_persistent);
}
return;
}
}
if (is_persistent) {
zend_resource le;
le.type = php_memc_list_entry();
le.ptr = m_obj;
GC_REFCOUNT(&le) = 1;
/* plist_key is not a persistent allocated key, thus we use str_update here */
if (zend_hash_str_update_mem(&EG(persistent_list), plist_key->val, plist_key->len, &le, sizeof(le)) == NULL) {
if (plist_key) {
zend_string_release(plist_key);
}
php_error_docref(NULL, E_ERROR, "could not register persistent entry");
/* not reached */
}
}
}
if (plist_key) {
zend_string_release(plist_key);
}
}
/* }}} */
/* {{{ Memcached::get(string key [, mixed callback [, double &cas_token [, int &udf_flags ] ] ])
Returns a value for the given key or false */
PHP_METHOD(Memcached, get)
{
php_memc_get_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ Memcached::getByKey(string server_key, string key [, mixed callback [, double &cas_token [, int &udf_flags ] ] ])
Returns a value for key from the server identified by the server key or false */
PHP_METHOD(Memcached, getByKey)
{
php_memc_get_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ -- php_memc_get_impl */
static void php_memc_get_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key)
{
zend_string *key;
zend_string *server_key = NULL;
const char *payload = NULL;
size_t payload_len = 0;
uint32_t flags = 0;
uint64_t cas = 0;
const char* keys[1] = { NULL };
size_t key_lens[1] = { 0 };
zval *cas_token = NULL;
zval *udf_flags = NULL;
uint64_t orig_cas_flag;
zend_fcall_info fci = empty_fcall_info;
zend_fcall_info_cache fcc = empty_fcall_info_cache;
memcached_result_st result;
memcached_return status = MEMCACHED_SUCCESS;
MEMC_METHOD_INIT_VARS;
if (by_key) {
if (zend_parse_parameters(ZEND_NUM_ARGS(), "SS|f!zz", &server_key, &key,
&fci, &fcc, &cas_token, &udf_flags) == FAILURE) {
return;
}
} else {
if (zend_parse_parameters(ZEND_NUM_ARGS(), "S|f!zz", &key,
&fci, &fcc, &cas_token, &udf_flags) == FAILURE) {
return;
}
}
MEMC_METHOD_FETCH_OBJECT;
i_obj->rescode = MEMCACHED_SUCCESS;
if (key->len == 0 || strchr(key->val, ' ')) {
i_obj->rescode = MEMCACHED_BAD_KEY_PROVIDED;
RETURN_FROM_GET;
}
keys[0] = key->val;
key_lens[0] = key->len;
orig_cas_flag = memcached_behavior_get(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS);
/*
* Enable CAS support, but only if it is currently disabled.
*/
if (cas_token && Z_ISREF_P(cas_token) && orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, 1);
}
if (by_key) {
status = memcached_mget_by_key(m_obj->memc, server_key->val, server_key->len, keys, key_lens, 1);
} else {
status = memcached_mget(m_obj->memc, keys, key_lens, 1);
}
if (cas_token && Z_ISREF_P(cas_token) && orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, orig_cas_flag);
}
if (php_memc_handle_error(i_obj, status) < 0) {
RETURN_FROM_GET;
}
status = MEMCACHED_SUCCESS;
memcached_result_create(m_obj->memc, &result);
if (memcached_fetch_result(m_obj->memc, &result, &status) == NULL) {
/* This is for historical reasons */
if (status == MEMCACHED_END)
status = MEMCACHED_NOTFOUND;
/*
* If the result wasn't found, and we have the read-through callback, invoke
* it to get the value. The CAS token will be 0, because we cannot generate it
* ourselves.
*/
if (cas_token) {
ZVAL_DEREF(cas_token);
zval_ptr_dtor(cas_token);
ZVAL_DOUBLE(cas_token, 0.0);
}
if (status == MEMCACHED_NOTFOUND && fci.size != 0) {
status = php_memc_do_cache_callback(getThis(), &fci, &fcc, key, return_value);
}
if (php_memc_handle_error(i_obj, status) < 0) {
memcached_result_free(&result);
RETURN_FROM_GET;
}
/* if we have a callback, all processing is done */
if (fci.size != 0) {
memcached_result_free(&result);
return;
}
}
/* Fetch all remaining results */
memcached_result_st dummy_result;
memcached_return dummy_status = MEMCACHED_SUCCESS;
memcached_result_create(m_obj->memc, &dummy_result);
while (memcached_fetch_result(m_obj->memc, &dummy_result, &dummy_status) != NULL) {}
memcached_result_free(&dummy_result);
payload = memcached_result_value(&result);
payload_len = memcached_result_length(&result);
flags = memcached_result_flags(&result);
if (cas_token) {
cas = memcached_result_cas(&result);
}
if (php_memc_zval_from_payload(return_value, payload, payload_len, flags, m_obj->serializer) < 0) {
memcached_result_free(&result);
i_obj->rescode = MEMC_RES_PAYLOAD_FAILURE;
RETURN_FROM_GET;
}
if (cas_token) {
ZVAL_DEREF(cas_token);
zval_ptr_dtor(cas_token);
ZVAL_DOUBLE(cas_token, (double)cas);
}
if (udf_flags) {
ZVAL_DEREF(udf_flags);
SEPARATE_ZVAL(udf_flags);
zval_dtor(udf_flags);
ZVAL_LONG(udf_flags, MEMC_VAL_GET_USER_FLAGS(flags));
}
memcached_result_free(&result);
}
/* }}} */
/* {{{ Memcached::getMulti(array keys [, array &cas_tokens [, array &udf_flags ] ])
Returns values for the given keys or false */
PHP_METHOD(Memcached, getMulti)
{
php_memc_getMulti_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ Memcached::getMultiByKey(string server_key, array keys [, array &cas_tokens [, array &udf_flags ] ])
Returns values for the given keys from the server identified by the server key or false */
PHP_METHOD(Memcached, getMultiByKey)
{
php_memc_getMulti_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ -- php_memc_getMulti_impl */
static void php_memc_getMulti_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key)
{
zval *keys = NULL;
zend_string *server_key = NULL;
size_t num_keys = 0;
zval *entry = NULL;
const char *payload = NULL;
size_t payload_len = 0;
const char **mkeys = NULL;
size_t *mkeys_len = NULL;
const char *tmp_key = NULL;
size_t res_key_len = 0;
uint32_t flags;
uint64_t cas = 0;
zval *cas_tokens = NULL;
zval *udf_flags = NULL;
uint64_t orig_cas_flag = 0;
zval value;
long get_flags = 0;
int i = 0;
zend_bool preserve_order;
memcached_result_st result;
memcached_return status = MEMCACHED_SUCCESS;
MEMC_METHOD_INIT_VARS;
if (by_key) {
if (zend_parse_parameters(ZEND_NUM_ARGS(), "Sa/|zlz", &server_key,
&keys, &cas_tokens, &get_flags, &udf_flags) == FAILURE) {
return;
}
} else {
if (zend_parse_parameters(ZEND_NUM_ARGS(), "a/|zlz", &keys, &cas_tokens, &get_flags, &udf_flags) == FAILURE) {
return;
}
}
MEMC_METHOD_FETCH_OBJECT;
i_obj->rescode = MEMCACHED_SUCCESS;
preserve_order = (get_flags & MEMC_GET_PRESERVE_ORDER);
num_keys = zend_hash_num_elements(Z_ARRVAL_P(keys));
mkeys = safe_emalloc(num_keys, sizeof(*mkeys), 0);
mkeys_len = safe_emalloc(num_keys, sizeof(*mkeys_len), 0);
array_init(return_value);
/*
* Create the array of keys for libmemcached. If none of the keys were valid
* (strings), set bad key result code and return.
*/
ZEND_HASH_FOREACH_VAL(Z_ARRVAL_P(keys), entry) {
if (Z_TYPE_P(entry) != IS_STRING) {
convert_to_string_ex(entry);
}
if (Z_TYPE_P(entry) == IS_STRING && Z_STRLEN_P(entry) > 0) {
mkeys[i] = Z_STRVAL_P(entry);
mkeys_len[i] = Z_STRLEN_P(entry);
if (preserve_order) {
add_assoc_null_ex(return_value, mkeys[i], mkeys_len[i]);
}
i++;
}
} ZEND_HASH_FOREACH_END();
if (i == 0) {
i_obj->rescode = MEMCACHED_NOTFOUND;
efree(mkeys);
efree(mkeys_len);
return;
}
/*
* Enable CAS support, but only if it is currently disabled.
*/
if (cas_tokens && Z_ISREF_P(cas_tokens)) {
orig_cas_flag = memcached_behavior_get(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS);
if (orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, 1);
}
}
if (by_key) {
status = memcached_mget_by_key(m_obj->memc, server_key->val, server_key->len, mkeys, mkeys_len, i);
} else {
status = memcached_mget(m_obj->memc, mkeys, mkeys_len, i);
}
/* Handle error, but ignore, there might still be some result */
php_memc_handle_error(i_obj, status);
/*
* Restore the CAS support flag, but only if we had to turn it on.
*/
if (cas_tokens && Z_ISREF_P(cas_tokens) && orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, orig_cas_flag);
}
efree(mkeys);
efree(mkeys_len);
/*
* Iterate through the result set and create the result array. The CAS tokens are
* returned as doubles, because we cannot store potential 64-bit values in longs.
*/
if (cas_tokens) {
if (Z_ISREF_P(cas_tokens)) {
/* cas_tokens was passed by reference, we'll create an array for it. */
ZVAL_DEREF(cas_tokens);
SEPARATE_ZVAL(cas_tokens);
zval_dtor(cas_tokens);
array_init(cas_tokens);
} else {
/* Not passed by reference, we allow this (eg.: if you specify null
to not enable cas but you want to use the udf_flags parameter).
We destruct it and set it to null for the peace of mind. */
cas_tokens = NULL;
}
}
/*
* Iterate through the result set and create the result array. The flags are
* returned as longs.
*/
if (udf_flags) {
ZVAL_DEREF(udf_flags);
SEPARATE_ZVAL(udf_flags);
zval_dtor(udf_flags);
array_init(udf_flags);
}
memcached_result_create(m_obj->memc, &result);
while ((memcached_fetch_result(m_obj->memc, &result, &status)) != NULL) {
char res_key [MEMCACHED_MAX_KEY];
if (status != MEMCACHED_SUCCESS) {
status = MEMCACHED_SOME_ERRORS;
php_memc_handle_error(i_obj, status);
continue;
}
payload = memcached_result_value(&result);
payload_len = memcached_result_length(&result);
flags = memcached_result_flags(&result);
tmp_key = memcached_result_key_value(&result);
res_key_len = memcached_result_key_length(&result);
/*
* This may be a bug in libmemcached, the key is not null terminated
* whe using the binary protocol.
*/
memcpy (res_key, tmp_key, res_key_len >= MEMCACHED_MAX_KEY ? MEMCACHED_MAX_KEY - 1 : res_key_len);
res_key [res_key_len] = '\0';
if (php_memc_zval_from_payload(&value, payload, payload_len, flags, m_obj->serializer) < 0) {
zval_ptr_dtor(&value);
if (EG(exception)) {
status = MEMC_RES_PAYLOAD_FAILURE;
php_memc_handle_error(i_obj, status);
memcached_quit(m_obj->memc);
break;
}
status = MEMCACHED_SOME_ERRORS;
i_obj->rescode = MEMCACHED_SOME_ERRORS;
continue;
}
add_assoc_zval_ex(return_value, res_key, res_key_len, &value);
if (cas_tokens) {
cas = memcached_result_cas(&result);
add_assoc_double_ex(cas_tokens, res_key, res_key_len, (double)cas);
}
if (udf_flags) {
add_assoc_long_ex(udf_flags, res_key, res_key_len, MEMC_VAL_GET_USER_FLAGS(flags));
}
}
memcached_result_free(&result);
if (EG(exception)) {
/* XXX: cas_tokens should only be set on success, currently we're destructive */
if (cas_tokens) {
ZVAL_DEREF(cas_tokens);
SEPARATE_ZVAL(cas_tokens);
zval_dtor(cas_tokens);
ZVAL_NULL(cas_tokens);
}
if (udf_flags) {
ZVAL_DEREF(udf_flags);
SEPARATE_ZVAL(udf_flags);
zval_dtor(udf_flags);
ZVAL_NULL(udf_flags);
}
zval_dtor(return_value);
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Memcached::getDelayed(array keys [, bool with_cas [, mixed callback ] ])
Sends a request for the given keys and returns immediately */
PHP_METHOD(Memcached, getDelayed)
{
php_memc_getDelayed_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ Memcached::getDelayedByKey(string server_key, array keys [, bool with_cas [, mixed callback ] ])
Sends a request for the given keys from the server identified by the server key and returns immediately */
PHP_METHOD(Memcached, getDelayedByKey)
{
php_memc_getDelayed_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ -- php_memc_getDelayed_impl */
static void php_memc_getDelayed_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key)
{
zval *keys = NULL;
zend_string *server_key = NULL;
zend_bool with_cas = 0;
size_t num_keys = 0;
zval *entry = NULL;
const char **mkeys = NULL;
size_t *mkeys_len = NULL;
uint64_t orig_cas_flag = 0;
zend_fcall_info fci = empty_fcall_info;
zend_fcall_info_cache fcc = empty_fcall_info_cache;
int i = 0;
memcached_return status = MEMCACHED_SUCCESS;
MEMC_METHOD_INIT_VARS;
if (by_key) {
if (zend_parse_parameters(ZEND_NUM_ARGS(), "Sa/|bf!", &server_key,
&keys, &with_cas, &fci, &fcc) == FAILURE) {
return;
}
} else {
if (zend_parse_parameters(ZEND_NUM_ARGS(), "a/|bf!", &keys, &with_cas,
&fci, &fcc) == FAILURE) {
return;
}
}
MEMC_METHOD_FETCH_OBJECT;
i_obj->rescode = MEMCACHED_SUCCESS;
/*
* Create the array of keys for libmemcached. If none of the keys were valid
* (strings), set bad key result code and return.
*/
num_keys = zend_hash_num_elements(Z_ARRVAL_P(keys));
mkeys = safe_emalloc(num_keys, sizeof(*mkeys), 0);
mkeys_len = safe_emalloc(num_keys, sizeof(*mkeys_len), 0);
ZEND_HASH_FOREACH_VAL(Z_ARRVAL_P(keys), entry) {
if (Z_TYPE_P(entry) != IS_STRING) {
convert_to_string_ex(entry);
}
if (Z_TYPE_P(entry) == IS_STRING && Z_STRLEN_P(entry) > 0) {
mkeys[i] = Z_STRVAL_P(entry);
mkeys_len[i] = Z_STRLEN_P(entry);
i++;
}
} ZEND_HASH_FOREACH_END();
if (i == 0) {
i_obj->rescode = MEMCACHED_BAD_KEY_PROVIDED;
efree(mkeys);
efree(mkeys_len);
zval_dtor(return_value);
RETURN_FALSE;
}
/*
* Enable CAS support, but only if it is currently disabled.
*/
if (with_cas) {
orig_cas_flag = memcached_behavior_get(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS);
if (orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, 1);
}
}
/*
* Issue the request, but collect results only if the result callback is provided.
*/
if (by_key) {
status = memcached_mget_by_key(m_obj->memc, server_key->val, server_key->len, mkeys, mkeys_len, i);
} else {
status = memcached_mget(m_obj->memc, mkeys, mkeys_len, i);
}
/*
* Restore the CAS support flag, but only if we had to turn it on.
*/
if (with_cas && orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, orig_cas_flag);
}
efree(mkeys);
efree(mkeys_len);
if (php_memc_handle_error(i_obj, status) < 0) {
zval_dtor(return_value);
RETURN_FALSE;
}
if (fci.size != 0) {
/*
* We have a result callback. Iterate through the result set and invoke the
* callback for each one.