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Handle OOM in mysqlnd_res::store_result_fetch_data

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This commit is contained in:
Andrey Hristov 2010-05-03 19:32:07 +00:00
parent 05ac8f5c52
commit 5ca71c00f5
1 changed files with 31 additions and 3 deletions
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30
ext/mysqlnd/mysqlnd_result.c
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@ -1080,8 +1080,18 @@ MYSQLND_METHOD(mysqlnd_res, store_result_fetch_data)(MYSQLND * const conn, MYSQL
conn->thread_id, binary_protocol, to_cache);
result->stored_data = set = mnd_pecalloc(1, sizeof(MYSQLND_RES_BUFFERED), to_cache);
if (!set) {
SET_OOM_ERROR(conn->error_info);
ret = FAIL;
goto end;
}
if (free_rows) {
set->row_buffers = mnd_pemalloc(free_rows * sizeof(MYSQLND_MEMORY_POOL_CHUNK *), to_cache);
if (!set->row_buffers) {
SET_OOM_ERROR(conn->error_info);
ret = FAIL;
goto end;
}
}
set->persistent = to_cache;
set->references = 1;
@ -1091,6 +1101,11 @@ MYSQLND_METHOD(mysqlnd_res, store_result_fetch_data)(MYSQLND * const conn, MYSQL
/* non-persistent */
row_packet = conn->protocol->m.get_row_packet(conn->protocol, FALSE TSRMLS_CC);
if (!row_packet) {
SET_OOM_ERROR(conn->error_info);
ret = FAIL;
goto end;
}
row_packet->result_set_memory_pool = result->result_set_memory_pool;
row_packet->field_count = meta->field_count;
row_packet->binary_protocol = binary_protocol;
@ -1103,10 +1118,17 @@ MYSQLND_METHOD(mysqlnd_res, store_result_fetch_data)(MYSQLND * const conn, MYSQL
while (FAIL != (ret = PACKET_READ(row_packet, conn)) && !row_packet->eof) {
if (!free_rows) {
uint64_t total_allocated_rows = free_rows = next_extend = next_extend * 11 / 10; /* extend with 10% */
MYSQLND_MEMORY_POOL_CHUNK ** new_row_buffers;
total_allocated_rows += set->row_count;
set->row_buffers = mnd_perealloc(set->row_buffers,
new_row_buffers = mnd_perealloc(set->row_buffers,
total_allocated_rows * sizeof(MYSQLND_MEMORY_POOL_CHUNK *),
set->persistent);
if (!new_row_buffers) {
SET_OOM_ERROR(conn->error_info);
ret = FAIL;
goto end;
}
set->row_buffers = new_row_buffers;
}
free_rows--;
set->row_buffers[set->row_count] = row_packet->row_buffer;
@ -1128,6 +1150,11 @@ MYSQLND_METHOD(mysqlnd_res, store_result_fetch_data)(MYSQLND * const conn, MYSQL
if (set->row_count) {
/* if pecalloc is used valgrind barks gcc version 4.3.1 20080507 (prerelease) [gcc-4_3-branch revision 135036] (SUSE Linux) */
set->data = mnd_pemalloc(set->row_count * meta->field_count * sizeof(zval *), to_cache);
if (!set->data) {
SET_OOM_ERROR(conn->error_info);
ret = FAIL;
goto end;
}
memset(set->data, 0, set->row_count * meta->field_count * sizeof(zval *));
}
@ -1163,6 +1190,7 @@ MYSQLND_METHOD(mysqlnd_res, store_result_fetch_data)(MYSQLND * const conn, MYSQL
/* libmysql's documentation says it should be so for SELECT statements */
conn->upsert_status.affected_rows = set->row_count;
}
end:
PACKET_FREE(row_packet);
DBG_INF_FMT("ret=%s row_count=%u warnings=%u server_status=%u", ret == PASS? "PASS":"FAIL",