archive/php-src
1
0
Fork 0
mirror of https://github.com/php/php-src.git synced 2025-08-15 21:48:51 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 3
php-src/ext/mysqlnd/php_mysqlnd.c
Nikita Popov 33e904915e MySQLnd: Clean up and optimize mysqlnd result set handling 
This is a larger overhaul of the mysqlnd result set infrastructure:

 * Drop support for two different types of buffered results sets
   ("c" and "zval"). Possibly these made sense at some earlier
   time, but now (with minor adjustments) one option is strictly
   worse than the other. Buffered result sets already buffer the
   full row packets, from which zvals can be decoded. The "zval"
   style additionally also buffered the decoded zvals. As result
   sets, even buffered ones, are generally only traversed once,
   this just ends up wasting memory. Now, a potentially useful
   variation here would be to buffer the decoded zvals instead of
   the row packets, but that's not what the code was doing.
 * To make it really strictly better, pre-allocate the zval row
   buffer and reuse it for all rows. Previously the "c" style always
   allocated a new buffer for each row.
 * The fetch_row API now provides a populated zval[]. The task of
   populating an array is deferred to fetch_row_into, which also
   avoids duplicating this code in multiple places. The fetch_row_c
   API is also implemented on top of fetch_row now, rather than
   duplicating large parts of the code.
 * The row fetching code for prepared statements and normal result
   sets has been mostly merged. These already used the same
   infrastructure, but prepared statements used separate row
   fetching functions that were nearly the same as the normal ones.
   This requires passing the stmt into the result set, rather than
   just a flag. The only part that remains separate is reading of
   unbuffered results in the presence of PS cursors.
2020-12-17 10:15:02 +01:00

309 lines
9.6 KiB
C
Raw Blame History

/*
+----------------------------------------------------------------------+
| Copyright (c) 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 |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andrey Hristov <andrey@php.net> |
| Ulf Wendel <uw@php.net> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "mysqlnd.h"
#include "mysqlnd_priv.h"
#include "mysqlnd_debug.h"
#include "mysqlnd_statistics.h"
#include "mysqlnd_reverse_api.h"
#include "ext/standard/info.h"
#include "zend_smart_str.h"
/* {{{ mysqlnd_minfo_print_hash */
PHPAPI void
mysqlnd_minfo_print_hash(zval *values)
{
zval *values_entry;
zend_string *string_key;
ZEND_HASH_FOREACH_STR_KEY_VAL(Z_ARRVAL_P(values), string_key, values_entry) {
convert_to_string(values_entry);
php_info_print_table_row(2, ZSTR_VAL(string_key), Z_STRVAL_P(values_entry));
} ZEND_HASH_FOREACH_END();
}
/* }}} */
/* {{{ mysqlnd_minfo_dump_loaded_plugins */
static int
mysqlnd_minfo_dump_loaded_plugins(zval *el, void * buf)
{
smart_str * buffer = (smart_str *) buf;
struct st_mysqlnd_plugin_header * plugin_header = (struct st_mysqlnd_plugin_header *)Z_PTR_P(el);
if (plugin_header->plugin_name) {
if (buffer->s) {
smart_str_appendc(buffer, ',');
}
smart_str_appends(buffer, plugin_header->plugin_name);
}
return ZEND_HASH_APPLY_KEEP;
}
/* }}} */
/* {{{ mysqlnd_minfo_dump_api_plugins */
static void
mysqlnd_minfo_dump_api_plugins(smart_str * buffer)
{
HashTable *ht = mysqlnd_reverse_api_get_api_list();
MYSQLND_REVERSE_API *ext;
ZEND_HASH_FOREACH_PTR(ht, ext) {
if (buffer->s) {
smart_str_appendc(buffer, ',');
}
smart_str_appends(buffer, ext->module->name);
} ZEND_HASH_FOREACH_END();
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION */
PHP_MINFO_FUNCTION(mysqlnd)
{
char buf[32];
php_info_print_table_start();
php_info_print_table_header(2, "mysqlnd", "enabled");
php_info_print_table_row(2, "Version", mysqlnd_get_client_info());
php_info_print_table_row(2, "Compression",
#ifdef MYSQLND_COMPRESSION_ENABLED
"supported");
#else
"not supported");
#endif
php_info_print_table_row(2, "core SSL",
#ifdef MYSQLND_SSL_SUPPORTED
"supported");
#else
"not supported");
#endif
php_info_print_table_row(2, "extended SSL",
#ifdef MYSQLND_HAVE_SSL
"supported");
#else
"not supported");
#endif
snprintf(buf, sizeof(buf), ZEND_LONG_FMT, MYSQLND_G(net_cmd_buffer_size));
php_info_print_table_row(2, "Command buffer size", buf);
snprintf(buf, sizeof(buf), ZEND_LONG_FMT, MYSQLND_G(net_read_buffer_size));
php_info_print_table_row(2, "Read buffer size", buf);
snprintf(buf, sizeof(buf), ZEND_LONG_FMT, MYSQLND_G(net_read_timeout));
php_info_print_table_row(2, "Read timeout", buf);
php_info_print_table_row(2, "Collecting statistics", MYSQLND_G(collect_statistics)? "Yes":"No");
php_info_print_table_row(2, "Collecting memory statistics", MYSQLND_G(collect_memory_statistics)? "Yes":"No");
php_info_print_table_row(2, "Tracing", MYSQLND_G(debug)? MYSQLND_G(debug):"n/a");
/* loaded plugins */
{
smart_str tmp_str = {0};
mysqlnd_plugin_apply_with_argument(mysqlnd_minfo_dump_loaded_plugins, &tmp_str);
smart_str_0(&tmp_str);
php_info_print_table_row(2, "Loaded plugins", tmp_str.s? ZSTR_VAL(tmp_str.s) : "");
smart_str_free(&tmp_str);
mysqlnd_minfo_dump_api_plugins(&tmp_str);
smart_str_0(&tmp_str);
php_info_print_table_row(2, "API Extensions", tmp_str.s? ZSTR_VAL(tmp_str.s) : "");
smart_str_free(&tmp_str);
}
php_info_print_table_end();
}
/* }}} */
PHPAPI ZEND_DECLARE_MODULE_GLOBALS(mysqlnd)
/* {{{ PHP_GINIT_FUNCTION */
static PHP_GINIT_FUNCTION(mysqlnd)
{
#if defined(COMPILE_DL_MYSQLND) && defined(ZTS)
ZEND_TSRMLS_CACHE_UPDATE();
#endif
mysqlnd_globals->collect_statistics = TRUE;
mysqlnd_globals->collect_memory_statistics = FALSE;
mysqlnd_globals->debug = NULL; /* The actual string */
mysqlnd_globals->dbg = NULL; /* The DBG object*/
mysqlnd_globals->trace_alloc_settings = NULL;
mysqlnd_globals->trace_alloc = NULL;
mysqlnd_globals->net_cmd_buffer_size = MYSQLND_NET_CMD_BUFFER_MIN_SIZE;
mysqlnd_globals->net_read_buffer_size = 32768;
mysqlnd_globals->net_read_timeout = 31536000;
mysqlnd_globals->log_mask = 0;
mysqlnd_globals->mempool_default_size = 16000;
mysqlnd_globals->debug_malloc_fail_threshold = -1;
mysqlnd_globals->debug_calloc_fail_threshold = -1;
mysqlnd_globals->debug_realloc_fail_threshold = -1;
mysqlnd_globals->sha256_server_public_key = NULL;
}
/* }}} */
/* {{{ PHP_INI_MH */
static PHP_INI_MH(OnUpdateNetCmdBufferSize)
{
zend_long long_value;
ZEND_ATOL(long_value, ZSTR_VAL(new_value));
if (long_value < MYSQLND_NET_CMD_BUFFER_MIN_SIZE) {
return FAILURE;
}
MYSQLND_G(net_cmd_buffer_size) = long_value;
return SUCCESS;
}
/* }}} */
/* {{{ PHP_INI_BEGIN */
PHP_INI_BEGIN()
STD_PHP_INI_BOOLEAN("mysqlnd.collect_statistics", "1", PHP_INI_ALL, OnUpdateBool, collect_statistics, zend_mysqlnd_globals, mysqlnd_globals)
STD_PHP_INI_BOOLEAN("mysqlnd.collect_memory_statistics","0",PHP_INI_SYSTEM, OnUpdateBool, collect_memory_statistics, zend_mysqlnd_globals, mysqlnd_globals)
STD_PHP_INI_ENTRY("mysqlnd.debug", NULL, PHP_INI_SYSTEM, OnUpdateString, debug, zend_mysqlnd_globals, mysqlnd_globals)
STD_PHP_INI_ENTRY("mysqlnd.trace_alloc", NULL, PHP_INI_SYSTEM, OnUpdateString, trace_alloc_settings, zend_mysqlnd_globals, mysqlnd_globals)
STD_PHP_INI_ENTRY("mysqlnd.net_cmd_buffer_size", MYSQLND_NET_CMD_BUFFER_MIN_SIZE_STR, PHP_INI_ALL, OnUpdateNetCmdBufferSize, net_cmd_buffer_size, zend_mysqlnd_globals, mysqlnd_globals)
STD_PHP_INI_ENTRY("mysqlnd.net_read_buffer_size", "32768",PHP_INI_ALL, OnUpdateLong, net_read_buffer_size, zend_mysqlnd_globals, mysqlnd_globals)
STD_PHP_INI_ENTRY("mysqlnd.net_read_timeout", "86400",PHP_INI_ALL, OnUpdateLong, net_read_timeout, zend_mysqlnd_globals, mysqlnd_globals)
STD_PHP_INI_ENTRY("mysqlnd.log_mask", "0", PHP_INI_ALL, OnUpdateLong, log_mask, zend_mysqlnd_globals, mysqlnd_globals)
STD_PHP_INI_ENTRY("mysqlnd.mempool_default_size","16000", PHP_INI_ALL, OnUpdateLong, mempool_default_size, zend_mysqlnd_globals, mysqlnd_globals)
STD_PHP_INI_ENTRY("mysqlnd.sha256_server_public_key",NULL, PHP_INI_PERDIR, OnUpdateString, sha256_server_public_key, zend_mysqlnd_globals, mysqlnd_globals)
#if PHP_DEBUG
STD_PHP_INI_ENTRY("mysqlnd.debug_malloc_fail_threshold","-1", PHP_INI_SYSTEM, OnUpdateLong, debug_malloc_fail_threshold, zend_mysqlnd_globals, mysqlnd_globals)
STD_PHP_INI_ENTRY("mysqlnd.debug_calloc_fail_threshold","-1", PHP_INI_SYSTEM, OnUpdateLong, debug_calloc_fail_threshold, zend_mysqlnd_globals, mysqlnd_globals)
STD_PHP_INI_ENTRY("mysqlnd.debug_realloc_fail_threshold","-1", PHP_INI_SYSTEM, OnUpdateLong, debug_realloc_fail_threshold, zend_mysqlnd_globals, mysqlnd_globals)
#endif
PHP_INI_END()
/* }}} */
/* {{{ PHP_MINIT_FUNCTION */
static PHP_MINIT_FUNCTION(mysqlnd)
{
REGISTER_INI_ENTRIES();
mysqlnd_library_init();
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION */
static PHP_MSHUTDOWN_FUNCTION(mysqlnd)
{
mysqlnd_library_end();
UNREGISTER_INI_ENTRIES();
return SUCCESS;
}
/* }}} */
#if PHP_DEBUG
/* {{{ PHP_RINIT_FUNCTION */
static PHP_RINIT_FUNCTION(mysqlnd)
{
if (MYSQLND_G(debug)) {
struct st_mysqlnd_plugin_trace_log * trace_log_plugin = mysqlnd_plugin_find("debug_trace");
MYSQLND_G(dbg) = NULL;
if (trace_log_plugin) {
MYSQLND_DEBUG * dbg = trace_log_plugin->methods.trace_instance_init(mysqlnd_debug_std_no_trace_funcs);
MYSQLND_DEBUG * trace_alloc = trace_log_plugin->methods.trace_instance_init(NULL);
if (!dbg || !trace_alloc) {
return FAILURE;
}
dbg->m->set_mode(dbg, MYSQLND_G(debug));
trace_alloc->m->set_mode(trace_alloc, MYSQLND_G(trace_alloc_settings));
MYSQLND_G(dbg) = dbg;
MYSQLND_G(trace_alloc) = trace_alloc;
}
}
return SUCCESS;
}
/* }}} */
#endif
#if PHP_DEBUG
/* {{{ PHP_RSHUTDOWN_FUNCTION */
static PHP_RSHUTDOWN_FUNCTION(mysqlnd)
{
MYSQLND_DEBUG * dbg = MYSQLND_G(dbg);
MYSQLND_DEBUG * trace_alloc = MYSQLND_G(trace_alloc);
DBG_ENTER("RSHUTDOWN");
if (dbg) {
dbg->m->close(dbg);
dbg->m->free_handle(dbg);
MYSQLND_G(dbg) = NULL;
}
if (trace_alloc) {
trace_alloc->m->close(trace_alloc);
trace_alloc->m->free_handle(trace_alloc);
MYSQLND_G(trace_alloc) = NULL;
}
return SUCCESS;
}
/* }}} */
#endif
static const zend_module_dep mysqlnd_deps[] = {
ZEND_MOD_REQUIRED("standard")
ZEND_MOD_END
};
/* {{{ mysqlnd_module_entry */
zend_module_entry mysqlnd_module_entry = {
STANDARD_MODULE_HEADER_EX,
NULL,
mysqlnd_deps,
"mysqlnd",
NULL,
PHP_MINIT(mysqlnd),
PHP_MSHUTDOWN(mysqlnd),
#if PHP_DEBUG
PHP_RINIT(mysqlnd),
#else
NULL,
#endif
#if PHP_DEBUG
PHP_RSHUTDOWN(mysqlnd),
#else
NULL,
#endif
PHP_MINFO(mysqlnd),
PHP_MYSQLND_VERSION,
PHP_MODULE_GLOBALS(mysqlnd),
PHP_GINIT(mysqlnd),
NULL,
NULL,
STANDARD_MODULE_PROPERTIES_EX
};
/* }}} */
/* {{{ COMPILE_DL_MYSQLND */
#ifdef COMPILE_DL_MYSQLND
#ifdef ZTS
ZEND_TSRMLS_CACHE_DEFINE()
#endif
ZEND_GET_MODULE(mysqlnd)
#endif
/* }}} */
Reference in a new issue View git blame Copy permalink