/
mysqlnd_result.c
2005 lines (1743 loc) · 62.4 KB
/
mysqlnd_result.c
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/*
+----------------------------------------------------------------------+
| PHP Version 6 |
+----------------------------------------------------------------------+
| Copyright (c) 2006-2008 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: Georg Richter <georg@mysql.com> |
| Andrey Hristov <andrey@mysql.com> |
| Ulf Wendel <uwendel@mysql.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include "mysqlnd.h"
#include "mysqlnd_wireprotocol.h"
#include "mysqlnd_priv.h"
#include "mysqlnd_result.h"
#include "mysqlnd_result_meta.h"
#include "mysqlnd_statistics.h"
#include "mysqlnd_charset.h"
#include "mysqlnd_debug.h"
#include "ext/standard/basic_functions.h"
#define MYSQLND_SILENT
#ifdef MYSQLND_THREADED
/* {{{ mysqlnd_fetch_thread */
void * mysqlnd_fetch_thread(void *arg)
{
MYSQLND *conn = (MYSQLND *) arg;
MYSQLND_RES * result = NULL;
void ***tsrm_ls = conn->tsrm_ls;
#ifndef MYSQLND_SILENT
printf("THREAD] conn=%p tsrm_ls=%p\n", conn, conn->tsrm_ls);
#endif
do {
pthread_mutex_lock(&conn->LOCK_work);
while (conn->thread_killed == FALSE && !conn->current_result) {
#ifndef MYSQLND_SILENT
printf("THREAD] Waiting for work in %s\n", __FUNCTION__);
#endif
pthread_cond_wait(&conn->COND_work, &conn->LOCK_work);
}
if (conn->thread_killed == TRUE) {
#ifndef MYSQLND_SILENT
printf("THREAD] Thread killed in %s\n", __FUNCTION__);
#endif
pthread_cond_signal(&conn->COND_thread_ended);
pthread_mutex_unlock(&conn->LOCK_work);
break;
}
#ifndef MYSQLND_SILENT
printf("THREAD] Got work in %s\n", __FUNCTION__);
#endif
CONN_SET_STATE(conn, CONN_FETCHING_DATA);
result = conn->current_result;
conn->current_result = NULL;
pthread_cond_signal(&conn->COND_work); /* sent notification back */
pthread_mutex_unlock(&conn->LOCK_work);
#ifndef MYSQLND_SILENT
printf("THREAD] Starting fetch %s\n", __FUNCTION__);
#endif
mysqlnd_background_store_result_fetch_data(result TSRMLS_CC);
/* do fetch the data from the wire */
pthread_mutex_lock(&conn->LOCK_work);
CONN_SET_STATE(conn, CONN_READY);
pthread_cond_signal(&conn->COND_work_done);
#ifndef MYSQLND_SILENT
printf("THREAD] Signaling work done in %s\n", __FUNCTION__);
#endif
pthread_mutex_unlock(&conn->LOCK_work);
} while (1);
#ifndef MYSQLND_SILENT
printf("THREAD] Exiting worker thread in %s\n", __FUNCTION__);
#endif
return NULL;
}
/* }}} */
#endif /* MYSQLND_THREADED */
/* {{{ mysqlnd_res_initialize_result_set_rest */
void mysqlnd_res_initialize_result_set_rest(MYSQLND_RES * const result TSRMLS_DC)
{
uint i;
zval **data_cursor = result->stored_data->data;
zval **data_begin = result->stored_data->data;
uint field_count = result->meta->field_count;
uint row_count = result->stored_data->row_count;
if (!data_cursor || row_count == result->stored_data->initialized_rows) {
return;
}
while ((data_cursor - data_begin) < (row_count * field_count)) {
if (NULL == data_cursor[0]) {
result->stored_data->initialized_rows++;
result->m.row_decoder(
result->stored_data->row_buffers[(data_cursor - data_begin) / field_count],
data_cursor,
result->meta->field_count,
result->meta->fields,
result->conn TSRMLS_CC);
for (i = 0; i < result->field_count; i++) {
/*
NULL fields are 0 length, 0 is not more than 0
String of zero size, definitely can't be the next max_length.
Thus for NULL and zero-length we are quite efficient.
*/
if (Z_TYPE_P(data_cursor[i]) >= IS_STRING) {
unsigned long len = Z_STRLEN_P(data_cursor[i]);
if (result->meta->fields[i].max_length < len) {
result->meta->fields[i].max_length = len;
}
}
}
}
data_cursor += field_count;
}
}
/* }}} */
/* {{{ mysqlnd_unbuffered_free_last_data */
void mysqlnd_unbuffered_free_last_data(MYSQLND_RES *result TSRMLS_DC)
{
MYSQLND_RES_UNBUFFERED *unbuf = result->unbuf;
DBG_ENTER("mysqlnd_unbuffered_free_last_data");
if (!unbuf) {
DBG_VOID_RETURN;
}
if (unbuf->last_row_data) {
unsigned int i, ctor_called_count = 0;
zend_bool copy_ctor_called;
MYSQLND_STATS *global_stats = result->conn? &result->conn->stats:NULL;
for (i = 0; i < result->field_count; i++) {
mysqlnd_palloc_zval_ptr_dtor(&(unbuf->last_row_data[i]),
result->zval_cache, result->type,
©_ctor_called TSRMLS_CC);
if (copy_ctor_called) {
ctor_called_count++;
}
}
/* By using value3 macros we hold a mutex only once, there is no value2 */
MYSQLND_INC_CONN_STATISTIC_W_VALUE3(global_stats,
STAT_COPY_ON_WRITE_PERFORMED,
ctor_called_count,
STAT_COPY_ON_WRITE_SAVED,
result->field_count - ctor_called_count,
STAT_COPY_ON_WRITE_PERFORMED, 0);
/* Free last row's zvals */
efree(unbuf->last_row_data);
unbuf->last_row_data = NULL;
}
if (unbuf->last_row_buffer) {
/* Nothing points to this buffer now, free it */
unbuf->last_row_buffer->free_chunk(unbuf->last_row_buffer, TRUE TSRMLS_CC);
unbuf->last_row_buffer = NULL;
}
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_free_buffered_data */
void mysqlnd_free_buffered_data(MYSQLND_RES *result TSRMLS_DC)
{
MYSQLND_THD_ZVAL_PCACHE *zval_cache = result->zval_cache;
MYSQLND_RES_BUFFERED *set = result->stored_data;
unsigned int field_count = result->field_count;
int row;
DBG_ENTER("mysqlnd_free_buffered_data");
DBG_INF_FMT("Freeing "MYSQLND_LLU_SPEC" row(s)", set->row_count);
DBG_INF_FMT("before: real_usage=%lu usage=%lu", zend_memory_usage(TRUE TSRMLS_CC), zend_memory_usage(FALSE TSRMLS_CC));
for (row = set->row_count - 1; row >= 0; row--) {
zval **current_row = set->data + row * field_count;
MYSQLND_MEMORY_POOL_CHUNK *current_buffer = set->row_buffers[row];
int col;
for (col = field_count - 1; col >= 0; --col) {
zend_bool copy_ctor_called;
if (current_row[0] == NULL) {
break;/* row that was never initialized */
}
mysqlnd_palloc_zval_ptr_dtor(&(current_row[col]), zval_cache,
result->type, ©_ctor_called TSRMLS_CC);
#if MYSQLND_DEBUG_MEMORY
DBG_INF_FMT("Copy_ctor_called=%d", copy_ctor_called);
#endif
MYSQLND_INC_GLOBAL_STATISTIC(copy_ctor_called? STAT_COPY_ON_WRITE_PERFORMED:
STAT_COPY_ON_WRITE_SAVED);
}
#if MYSQLND_DEBUG_MEMORY
DBG_INF("Freeing current_row & current_buffer");
#endif
current_buffer->free_chunk(current_buffer, TRUE TSRMLS_CC);
}
DBG_INF("Freeing data & row_buffer");
pefree(set->data, set->persistent);
pefree(set->row_buffers, set->persistent);
set->data = NULL;
set->row_buffers = NULL;
set->data_cursor = NULL;
set->row_count = 0;
if (set->qcache) {
mysqlnd_qcache_free_cache_reference(&set->qcache);
}
DBG_INF("Freeing set");
pefree(set, set->persistent);
DBG_INF_FMT("after: real_usage=%lu usage=%lu", zend_memory_usage(TRUE TSRMLS_CC), zend_memory_usage(FALSE TSRMLS_CC));
DBG_VOID_RETURN;
}
/* }}} */
#ifdef MYSQLND_THREADED
/* {{{ mysqlnd_free_background_buffered_data */
void mysqlnd_free_background_buffered_data(MYSQLND_RES *result TSRMLS_DC)
{
MYSQLND_THD_ZVAL_PCACHE *zval_cache = result->zval_cache;
MYSQLND_RES_BG_BUFFERED *set = result->bg_stored_data;
unsigned int field_count = result->field_count;
int row;
DBG_ENTER("mysqlnd_free_buffered_data");
DBG_INF_FMT("Freeing "MYSQLND_LLU_SPEC" row(s)", set->row_count);
do {
tsrm_mutex_lock(set->LOCK);
if (set->bg_fetch_finished) {
tsrm_mutex_unlock(set->LOCK);
break;
}
tsrm_mutex_unlock(set->LOCK);
#if HAVE_USLEEP
usleep(2000);
#else
{
volatile int i;
for (i = 0; i < 1000; i++);
}
#endif
} while (1);
DBG_INF_FMT("before: real_usage=%lu usage=%lu", zend_memory_usage(TRUE TSRMLS_CC), zend_memory_usage(FALSE TSRMLS_CC));
for (row = set->row_count - 1; row >= 0; row--) {
MYSQLND_MEMORY_POOL_CHUNK *current_buffer = set->row_buffers[row];
/* It could be the case that the user fetched no rows - then no set->data */
if (row < set->data_size && set->data[row]) {
zval **current_row = set->data[row];
unsigned int col;
for (col = 0; col < field_count; col++) {
zend_bool copy_ctor_called;
mysqlnd_palloc_zval_ptr_dtor(&(current_row[col]), zval_cache,
result->type, ©_ctor_called TSRMLS_CC);
#if MYSQLND_DEBUG_MEMORY
DBG_INF_FMT("Copy_ctor_called=%d", copy_ctor_called);
#endif
MYSQLND_INC_GLOBAL_STATISTIC(copy_ctor_called? STAT_COPY_ON_WRITE_PERFORMED:
STAT_COPY_ON_WRITE_SAVED);
}
#if MYSQLND_DEBUG_MEMORY
DBG_INF("Freeing current_row & current_buffer");
#endif
pefree(current_row, set->persistent);
}
current_buffer->free_chunk(current_buffer, TRUE TSRMLS_CC);
}
DBG_INF("Freeing data & row_buffer");
pefree(set->data, set->persistent);
pefree(set->row_buffers, set->persistent);
set->data = NULL;
set->row_buffers = NULL;
set->data_cursor = NULL;
set->row_count = 0;
if (set->qcache) {
mysqlnd_qcache_free_cache_reference(&set->qcache);
}
if (set->LOCK) {
tsrm_mutex_free(set->LOCK);
}
DBG_INF("Freeing set");
pefree(set, set->persistent);
DBG_INF_FMT("after: real_usage=%lu usage=%lu", zend_memory_usage(TRUE TSRMLS_CC), zend_memory_usage(FALSE TSRMLS_CC));
DBG_VOID_RETURN;
}
/* }}} */
#endif /* MYSQL_THREADING */
/* {{{ mysqlnd_res::free_result_buffers */
static void
MYSQLND_METHOD(mysqlnd_res, free_result_buffers)(MYSQLND_RES *result TSRMLS_DC)
{
DBG_ENTER("mysqlnd_res::free_result_buffers");
DBG_INF_FMT("%s", result->unbuf? "unbuffered":(result->stored_data? "buffered":"unknown"));
if (result->unbuf) {
mysqlnd_unbuffered_free_last_data(result TSRMLS_CC);
efree(result->unbuf);
result->unbuf = NULL;
} else if (result->stored_data) {
mysqlnd_free_buffered_data(result TSRMLS_CC);
result->stored_data = NULL;
}
#ifdef MYSQLND_THREADED
else if (result->bg_stored_data) {
mysqlnd_free_background_buffered_data(result TSRMLS_CC);
result->bg_stored_data = NULL;
}
#endif
if (result->lengths) {
efree(result->lengths);
result->lengths = NULL;
}
if (result->row_packet) {
DBG_INF("Freeing packet");
PACKET_FREE(result->row_packet);
result->row_packet = NULL;
}
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_internal_free_result_contents */
static
void mysqlnd_internal_free_result_contents(MYSQLND_RES *result TSRMLS_DC)
{
DBG_ENTER("mysqlnd_internal_free_result_contents");
result->m.free_result_buffers(result TSRMLS_CC);
if (result->meta) {
result->meta->m->free_metadata(result->meta, FALSE TSRMLS_CC);
result->meta = NULL;
}
if (result->zval_cache) {
DBG_INF("Freeing zval cache reference");
mysqlnd_palloc_free_thd_cache_reference(&result->zval_cache);
result->zval_cache = NULL;
}
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_internal_free_result */
static
void mysqlnd_internal_free_result(MYSQLND_RES *result TSRMLS_DC)
{
DBG_ENTER("mysqlnd_internal_free_result");
result->m.free_result_contents(result TSRMLS_CC);
if (result->conn) {
result->conn->m->free_reference(result->conn TSRMLS_CC);
result->conn = NULL;
}
efree(result);
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_res::read_result_metadata */
static enum_func_status
MYSQLND_METHOD(mysqlnd_res, read_result_metadata)(MYSQLND_RES *result, MYSQLND *conn TSRMLS_DC)
{
DBG_ENTER("mysqlnd_res::read_result_metadata");
/*
Make it safe to call it repeatedly for PS -
better free and allocate a new because the number of field might change
(select *) with altered table. Also for statements which skip the PS
infrastructure!
*/
if (result->meta) {
result->meta->m->free_metadata(result->meta, FALSE TSRMLS_CC);
result->meta = NULL;
}
result->meta = mysqlnd_result_meta_init(result->field_count TSRMLS_CC);
/* 1. Read all fields metadata */
/* It's safe to reread without freeing */
if (FAIL == result->meta->m->read_metadata(result->meta, conn TSRMLS_CC)) {
result->m.free_result_contents(result TSRMLS_CC);
DBG_RETURN(FAIL);
}
/*
2. Follows an EOF packet, which the client of mysqlnd_read_result_metadata()
should consume.
3. If there is a result set, it follows. The last packet will have 'eof' set
If PS, then no result set follows.
*/
DBG_RETURN(PASS);
}
/* }}} */
/* {{{ mysqlnd_query_read_result_set_header */
enum_func_status
mysqlnd_query_read_result_set_header(MYSQLND *conn, MYSQLND_STMT *stmt TSRMLS_DC)
{
enum_func_status ret;
php_mysql_packet_rset_header rset_header;
DBG_ENTER("mysqlnd_query_read_result_set_header");
DBG_INF_FMT("stmt=%d", stmt? stmt->stmt_id:0);
ret = FAIL;
PACKET_INIT_ALLOCA(rset_header, PROT_RSET_HEADER_PACKET);
do {
SET_ERROR_AFF_ROWS(conn);
if (FAIL == (ret = PACKET_READ_ALLOCA(rset_header, conn))) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error reading result set's header");
break;
}
if (rset_header.error_info.error_no) {
/*
Cover a protocol design error: error packet does not
contain the server status. Therefore, the client has no way
to find out whether there are more result sets of
a multiple-result-set statement pending. Luckily, in 5.0 an
error always aborts execution of a statement, wherever it is
a multi-statement or a stored procedure, so it should be
safe to unconditionally turn off the flag here.
*/
conn->upsert_status.server_status &= ~SERVER_MORE_RESULTS_EXISTS;
/*
This will copy the error code and the messages, as they
are buffers in the struct
*/
conn->error_info = rset_header.error_info;
ret = FAIL;
/* Return back from CONN_QUERY_SENT */
CONN_SET_STATE(conn, CONN_READY);
break;
}
conn->error_info.error_no = 0;
switch (rset_header.field_count) {
case MYSQLND_NULL_LENGTH: { /* LOAD DATA LOCAL INFILE */
zend_bool is_warning;
DBG_INF("LOAD DATA");
conn->last_query_type = QUERY_LOAD_LOCAL;
CONN_SET_STATE(conn, CONN_SENDING_LOAD_DATA);
ret = mysqlnd_handle_local_infile(conn, rset_header.info_or_local_file, &is_warning TSRMLS_CC);
CONN_SET_STATE(conn, (ret == PASS || is_warning == TRUE)? CONN_READY:CONN_QUIT_SENT);
MYSQLND_INC_CONN_STATISTIC(&conn->stats, STAT_NON_RSET_QUERY);
break;
}
case 0: /* UPSERT */
DBG_INF("UPSERT");
conn->last_query_type = QUERY_UPSERT;
conn->field_count = rset_header.field_count;
conn->upsert_status.warning_count = rset_header.warning_count;
conn->upsert_status.server_status = rset_header.server_status;
conn->upsert_status.affected_rows = rset_header.affected_rows;
conn->upsert_status.last_insert_id = rset_header.last_insert_id;
SET_NEW_MESSAGE(conn->last_message, conn->last_message_len,
rset_header.info_or_local_file, rset_header.info_or_local_file_len,
conn->persistent);
/* Result set can follow UPSERT statement, check server_status */
if (conn->upsert_status.server_status & SERVER_MORE_RESULTS_EXISTS) {
CONN_SET_STATE(conn, CONN_NEXT_RESULT_PENDING);
} else {
CONN_SET_STATE(conn, CONN_READY);
}
ret = PASS;
MYSQLND_INC_CONN_STATISTIC(&conn->stats, STAT_NON_RSET_QUERY);
break;
default:{ /* Result set */
php_mysql_packet_eof fields_eof;
MYSQLND_RES *result;
enum_mysqlnd_collected_stats stat = STAT_LAST;
DBG_INF("Result set pending");
SET_EMPTY_MESSAGE(conn->last_message, conn->last_message_len, conn->persistent);
MYSQLND_INC_CONN_STATISTIC(&conn->stats, STAT_RSET_QUERY);
memset(&conn->upsert_status, 0, sizeof(conn->upsert_status));
/* restore after zeroing */
SET_ERROR_AFF_ROWS(conn);
conn->last_query_type = QUERY_SELECT;
CONN_SET_STATE(conn, CONN_FETCHING_DATA);
/* PS has already allocated it */
conn->field_count = rset_header.field_count;
if (!stmt) {
result =
conn->current_result=
mysqlnd_result_init(rset_header.field_count,
mysqlnd_palloc_get_thd_cache_reference(conn->zval_cache)
TSRMLS_CC);
} else {
if (!stmt->result) {
DBG_INF("This is 'SHOW'/'EXPLAIN'-like query.");
/*
This is 'SHOW'/'EXPLAIN'-like query. Current implementation of
prepared statements can't send result set metadata for these queries
on prepare stage. Read it now.
*/
result =
stmt->result =
mysqlnd_result_init(rset_header.field_count,
mysqlnd_palloc_get_thd_cache_reference(conn->zval_cache)
TSRMLS_CC);
} else {
/*
Update result set metadata if it for some reason changed between
prepare and execute, i.e.:
- in case of 'SELECT ?' we don't know column type unless data was
supplied to mysql_stmt_execute, so updated column type is sent
now.
- if data dictionary changed between prepare and execute, for
example a table used in the query was altered.
Note, that now (4.1.3) we always send metadata in reply to
COM_STMT_EXECUTE (even if it is not necessary), so either this or
previous branch always works.
*/
}
result = stmt->result;
}
if (FAIL == (ret = result->m.read_result_metadata(result, conn TSRMLS_CC))) {
/* For PS, we leave them in Prepared state */
if (!stmt) {
efree(conn->current_result);
conn->current_result = NULL;
}
DBG_ERR("Error ocurred while reading metadata");
break;
}
/* Check for SERVER_STATUS_MORE_RESULTS if needed */
PACKET_INIT_ALLOCA(fields_eof, PROT_EOF_PACKET);
if (FAIL == (ret = PACKET_READ_ALLOCA(fields_eof, conn))) {
DBG_ERR("Error ocurred while reading the EOF packet");
result->m.free_result_contents(result TSRMLS_CC);
efree(result);
if (!stmt) {
conn->current_result = NULL;
} else {
stmt->result = NULL;
memset(stmt, 0, sizeof(MYSQLND_STMT));
stmt->state = MYSQLND_STMT_INITTED;
}
} else {
unsigned int to_log = MYSQLND_G(log_mask);
to_log &= fields_eof.server_status;
DBG_INF_FMT("warnings=%u server_status=%u", fields_eof.warning_count, fields_eof.server_status);
conn->upsert_status.warning_count = fields_eof.warning_count;
/*
If SERVER_MORE_RESULTS_EXISTS is set then this is either MULTI_QUERY or a CALL()
The first packet after sending the query/com_execute has the bit set only
in this cases. Not sure why it's a needed but it marks that the whole stream
will include many result sets. What actually matters are the bits set at the end
of every result set (the EOF packet).
*/
conn->upsert_status.server_status = fields_eof.server_status;
if (fields_eof.server_status & SERVER_QUERY_NO_GOOD_INDEX_USED) {
stat = STAT_BAD_INDEX_USED;
} else if (fields_eof.server_status & SERVER_QUERY_NO_INDEX_USED) {
stat = STAT_NO_INDEX_USED;
} else if (fields_eof.server_status & SERVER_QUERY_WAS_SLOW) {
stat = STAT_QUERY_WAS_SLOW;
}
if (to_log) {
#if A0
char *backtrace = mysqlnd_get_backtrace(TSRMLS_C);
php_log_err(backtrace TSRMLS_CC);
efree(backtrace);
#endif
MYSQLND_INC_CONN_STATISTIC(&conn->stats, stat);
}
}
PACKET_FREE_ALLOCA(fields_eof);
break;
}
}
} while (0);
PACKET_FREE_ALLOCA(rset_header);
DBG_INF(ret == PASS? "PASS":"FAIL");
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_fetch_lengths_buffered */
/*
Do lazy initialization for buffered results. As PHP strings have
length inside, this function makes not much sense in the context
of PHP, to be called as separate function. But let's have it for
completeness.
*/
static
unsigned long * mysqlnd_fetch_lengths_buffered(MYSQLND_RES * const result)
{
unsigned int i;
zval **previous_row;
MYSQLND_RES_BUFFERED *set = result->stored_data;
/*
If:
- unbuffered result
- first row has not been read
- last_row has been read
*/
if (set->data_cursor == NULL ||
set->data_cursor == set->data ||
((set->data_cursor - set->data) > (set->row_count * result->meta->field_count) ))
{
return NULL;/* No rows or no more rows */
}
previous_row = set->data_cursor - result->meta->field_count;
for (i = 0; i < result->meta->field_count; i++) {
result->lengths[i] = (Z_TYPE_P(previous_row[i]) == IS_NULL)? 0:Z_STRLEN_P(previous_row[i]);
}
return result->lengths;
}
/* }}} */
#ifdef MYSQLND_THREADED
/* {{{ mysqlnd_fetch_lengths_async_buffered */
/*
Do lazy initialization for buffered results. As PHP strings have
length inside, this function makes not much sense in the context
of PHP, to be called as separate function. But let's have it for
completeness.
*/
static
unsigned long * mysqlnd_fetch_lengths_async_buffered(MYSQLND_RES * const result)
{
int i;
zval **previous_row;
MYSQLND_RES_BG_BUFFERED *set = result->bg_stored_data;
/*
If:
- unbuffered result
- first row has not been read
- last_row has been read
*/
if (set->data_cursor == NULL ||
set->data_cursor == set->data ||
((set->data_cursor - set->data) > set->row_count))
{
return NULL;/* No rows or no more rows */
}
previous_row = *(set->data_cursor - 1);
for (i = 0; i < result->meta->field_count; i++) {
result->lengths[i] = (Z_TYPE_P(previous_row[i]) == IS_NULL)? 0:Z_STRLEN_P(previous_row[i]);
}
return result->lengths;
}
/* }}} */
#endif
/* {{{ mysqlnd_fetch_lengths_unbuffered */
static
unsigned long * mysqlnd_fetch_lengths_unbuffered(MYSQLND_RES * const result)
{
return result->lengths;
}
/* }}} */
#if !defined(MYSQLND_USE_OPTIMISATIONS) || MYSQLND_USE_OPTIMISATIONS == 0
/* {{{ mysqlnd_res::fetch_lengths */
PHPAPI unsigned long * mysqlnd_fetch_lengths(MYSQLND_RES * const result)
{
return result->m.fetch_lengths? result->m.fetch_lengths(result):NULL;
}
/* }}} */
#endif
/* {{{ mysqlnd_fetch_row_unbuffered_c */
static MYSQLND_ROW_C
mysqlnd_fetch_row_unbuffered_c(MYSQLND_RES *result TSRMLS_DC)
{
enum_func_status ret;
MYSQLND_ROW_C retrow = NULL;
unsigned int i,
field_count = result->field_count;
php_mysql_packet_row *row_packet = result->row_packet;
unsigned long *lengths = result->lengths;
DBG_ENTER("mysqlnd_fetch_row_unbuffered_c");
if (result->unbuf->eof_reached) {
/* No more rows obviously */
DBG_RETURN(retrow);
}
if (CONN_GET_STATE(result->conn) != CONN_FETCHING_DATA) {
SET_CLIENT_ERROR(result->conn->error_info, CR_COMMANDS_OUT_OF_SYNC,
UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_RETURN(retrow);
}
/* Let the row packet fill our buffer and skip additional mnd_malloc + memcpy */
row_packet->skip_extraction = FALSE;
/*
If we skip rows (row == NULL) we have to
mysqlnd_unbuffered_free_last_data() before it. The function returns always true.
*/
if (PASS == (ret = PACKET_READ(row_packet, result->conn)) && !row_packet->eof) {
result->unbuf->row_count++;
mysqlnd_unbuffered_free_last_data(result TSRMLS_CC);
result->unbuf->last_row_data = row_packet->fields;
result->unbuf->last_row_buffer = row_packet->row_buffer;
row_packet->fields = NULL;
row_packet->row_buffer = NULL;
MYSQLND_INC_CONN_STATISTIC(&result->conn->stats, STAT_ROWS_FETCHED_FROM_CLIENT_NORMAL_UNBUF);
if (!row_packet->skip_extraction) {
MYSQLND_FIELD *field = result->meta->fields;
struct mysqlnd_field_hash_key *zend_hash_key = result->meta->zend_hash_keys;
result->m.row_decoder(result->unbuf->last_row_buffer,
result->unbuf->last_row_data,
row_packet->field_count,
row_packet->fields_metadata,
result->conn TSRMLS_CC);
retrow = mnd_malloc(result->field_count * sizeof(char *));
for (i = 0; i < field_count; i++, field++, zend_hash_key++) {
zval *data = result->unbuf->last_row_data[i];
int len;
if (Z_TYPE_P(data) != IS_NULL) {
convert_to_string(data);
retrow[i] = Z_STRVAL_P(data);
len = Z_STRLEN_P(data);
} else {
retrow[i] = NULL;
len = 0;
}
if (lengths) {
lengths[i] = len;
}
if (field->max_length < len) {
field->max_length = len;
}
}
}
} else if (ret == FAIL) {
if (row_packet->error_info.error_no) {
result->conn->error_info = row_packet->error_info;
DBG_ERR_FMT("errorno=%d error=%s", row_packet->error_info.error_no, row_packet->error_info.error);
}
CONN_SET_STATE(result->conn, CONN_READY);
result->unbuf->eof_reached = TRUE; /* so next time we won't get an error */
} else if (row_packet->eof) {
/* Mark the connection as usable again */
DBG_INF_FMT("warningss=%u server_status=%u", row_packet->warning_count, row_packet->server_status);
result->unbuf->eof_reached = TRUE;
result->conn->upsert_status.warning_count = row_packet->warning_count;
result->conn->upsert_status.server_status = row_packet->server_status;
/*
result->row_packet will be cleaned when
destroying the result object
*/
if (result->conn->upsert_status.server_status & SERVER_MORE_RESULTS_EXISTS) {
CONN_SET_STATE(result->conn, CONN_NEXT_RESULT_PENDING);
} else {
CONN_SET_STATE(result->conn, CONN_READY);
}
mysqlnd_unbuffered_free_last_data(result TSRMLS_CC);
}
DBG_RETURN(retrow);
}
/* }}} */
/* {{{ mysqlnd_fetch_row_unbuffered */
static enum_func_status
mysqlnd_fetch_row_unbuffered(MYSQLND_RES *result, void *param, unsigned int flags,
zend_bool *fetched_anything TSRMLS_DC)
{
enum_func_status ret;
zval *row = (zval *) param;
php_mysql_packet_row *row_packet = result->row_packet;
DBG_ENTER("mysqlnd_fetch_row_unbuffered");
DBG_INF_FMT("flags=%d", flags);
if (result->unbuf->eof_reached) {
/* No more rows obviously */
*fetched_anything = FALSE;
DBG_RETURN(PASS);
}
if (CONN_GET_STATE(result->conn) != CONN_FETCHING_DATA) {
SET_CLIENT_ERROR(result->conn->error_info, CR_COMMANDS_OUT_OF_SYNC,
UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_RETURN(FAIL);
}
/* Let the row packet fill our buffer and skip additional mnd_malloc + memcpy */
row_packet->skip_extraction = row? FALSE:TRUE;
/*
If we skip rows (row == NULL) we have to
mysqlnd_unbuffered_free_last_data() before it. The function returns always true.
*/
if (PASS == (ret = PACKET_READ(row_packet, result->conn)) && !row_packet->eof) {
result->unbuf->row_count++;
*fetched_anything = TRUE;
mysqlnd_unbuffered_free_last_data(result TSRMLS_CC);
result->unbuf->last_row_data = row_packet->fields;
result->unbuf->last_row_buffer = row_packet->row_buffer;
row_packet->fields = NULL;
row_packet->row_buffer = NULL;
MYSQLND_INC_CONN_STATISTIC(&result->conn->stats, STAT_ROWS_FETCHED_FROM_CLIENT_NORMAL_UNBUF);
if (!row_packet->skip_extraction) {
HashTable *row_ht = Z_ARRVAL_P(row);
MYSQLND_FIELD *field = result->meta->fields;
struct mysqlnd_field_hash_key *zend_hash_key = result->meta->zend_hash_keys;
unsigned int i, field_count = result->field_count;
unsigned long *lengths = result->lengths;
result->m.row_decoder(result->unbuf->last_row_buffer,
result->unbuf->last_row_data,
field_count,
row_packet->fields_metadata,
result->conn TSRMLS_CC);
for (i = 0; i < field_count; i++, field++, zend_hash_key++) {
zval *data = result->unbuf->last_row_data[i];
int len = (Z_TYPE_P(data) == IS_NULL)? 0:Z_STRLEN_P(data);
if (lengths) {
lengths[i] = len;
}
/* Forbid ZE to free it, we will clean it */
Z_ADDREF_P(data);
if ((flags & MYSQLND_FETCH_BOTH) == MYSQLND_FETCH_BOTH) {
Z_ADDREF_P(data);
}
if (flags & MYSQLND_FETCH_NUM) {
zend_hash_next_index_insert(row_ht, &data, sizeof(zval *), NULL);
}
if (flags & MYSQLND_FETCH_ASSOC) {
/* zend_hash_quick_update needs length + trailing zero */
/* QQ: Error handling ? */
/*
zend_hash_quick_update does not check, as add_assoc_zval_ex do, whether
the index is a numeric and convert it to it. This however means constant
hashing of the column name, which is not needed as it can be precomputed.
*/
if (zend_hash_key->is_numeric == FALSE) {
#if PHP_MAJOR_VERSION >= 6
if (UG(unicode)) {
zend_u_hash_quick_update(Z_ARRVAL_P(row), IS_UNICODE,
zend_hash_key->ustr,
zend_hash_key->ulen + 1,
zend_hash_key->key,
(void *) &data, sizeof(zval *), NULL);
} else
#endif
{
zend_hash_quick_update(Z_ARRVAL_P(row),
field->name,
field->name_length + 1,
zend_hash_key->key,
(void *) &data, sizeof(zval *), NULL);
}
} else {
zend_hash_index_update(Z_ARRVAL_P(row),
zend_hash_key->key,
(void *) &data, sizeof(zval *), NULL);
}
}
if (field->max_length < len) {
field->max_length = len;
}
}
}
} else if (ret == FAIL) {
if (row_packet->error_info.error_no) {
result->conn->error_info = row_packet->error_info;
DBG_ERR_FMT("errorno=%d error=%s", row_packet->error_info.error_no, row_packet->error_info.error);
}
*fetched_anything = FALSE;
CONN_SET_STATE(result->conn, CONN_READY);
result->unbuf->eof_reached = TRUE; /* so next time we won't get an error */
} else if (row_packet->eof) {
/* Mark the connection as usable again */
DBG_INF_FMT("warnings=%u server_status=%u", row_packet->warning_count, row_packet->server_status);
result->unbuf->eof_reached = TRUE;
result->conn->upsert_status.warning_count = row_packet->warning_count;
result->conn->upsert_status.server_status = row_packet->server_status;
/*
result->row_packet will be cleaned when
destroying the result object
*/
if (result->conn->upsert_status.server_status & SERVER_MORE_RESULTS_EXISTS) {
CONN_SET_STATE(result->conn, CONN_NEXT_RESULT_PENDING);
} else {
CONN_SET_STATE(result->conn, CONN_READY);
}
mysqlnd_unbuffered_free_last_data(result TSRMLS_CC);
*fetched_anything = FALSE;
}
DBG_INF_FMT("ret=%s fetched=%d", ret == PASS? "PASS":"FAIL", *fetched_anything);
DBG_RETURN(PASS);
}
/* }}} */
/* {{{ mysqlnd_res::use_result */
static MYSQLND_RES *
MYSQLND_METHOD(mysqlnd_res, use_result)(MYSQLND_RES * const result, zend_bool ps TSRMLS_DC)
{
DBG_ENTER("mysqlnd_res::use_result");
DBG_INF_FMT("ps=%d", ps);
SET_EMPTY_ERROR(result->conn->error_info);
if (ps == FALSE) {
result->type = MYSQLND_RES_NORMAL;
result->m.fetch_row = result->m.fetch_row_normal_unbuffered;
result->m.fetch_lengths = mysqlnd_fetch_lengths_unbuffered;
result->lengths = mnd_ecalloc(result->field_count, sizeof(unsigned long));
result->m.row_decoder = php_mysqlnd_rowp_read_text_protocol;
} else {
result->type = MYSQLND_RES_PS_UNBUF;
/* result->m.fetch_row() will be set in mysqlnd_ps.c */
result->m.fetch_lengths = NULL; /* makes no sense */
result->lengths = NULL;
result->m.row_decoder = php_mysqlnd_rowp_read_binary_protocol;
}
result->unbuf = mnd_ecalloc(1, sizeof(MYSQLND_RES_UNBUFFERED));
/*
Will be freed in the mysqlnd_internal_free_result_contents() called
by the resource destructor. mysqlnd_fetch_row_unbuffered() expects
this to be not NULL.
*/
/* FALSE = non-persistent */
PACKET_INIT(result->row_packet, PROT_ROW_PACKET, php_mysql_packet_row *, FALSE);
result->row_packet->field_count = result->field_count;
result->row_packet->binary_protocol = ps;