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Reused single segment between requests. Saved one malloc/free for each request.

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This commit is contained in:
Dmitry Stogov
2010-07-07 10:34:50 +00:00
parent d3efe97a2e
commit 3ea5bc7914
1 changed files with 33 additions and 6 deletions
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Zend/zend_alloc.c
+33 -6
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@@ -1632,27 +1632,54 @@ ZEND_API void zend_mm_shutdown(zend_mm_heap *heap, int full_shutdown, int silent
internal = heap->internal;
storage = heap->storage;
segment = heap->segments_list;
while (segment) {
prev = segment;
segment = segment->next_segment;
ZEND_MM_STORAGE_FREE(prev);
}
if (full_shutdown) {
while (segment) {
prev = segment;
segment = segment->next_segment;
ZEND_MM_STORAGE_FREE(prev);
}
heap->segments_list = NULL;
storage->handlers->dtor(storage);
if (!internal) {
free(heap);
}
} else {
if (segment) {
if (heap->reserve_size) {
while (segment->next_segment) {
prev = segment;
segment = segment->next_segment;
ZEND_MM_STORAGE_FREE(prev);
}
heap->segments_list = segment;
} else {
do {
prev = segment;
segment = segment->next_segment;
ZEND_MM_STORAGE_FREE(prev);
} while (segment);
heap->segments_list = NULL;
}
}
if (heap->compact_size &&
heap->real_peak > heap->compact_size) {
storage->handlers->compact(storage);
}
heap->segments_list = NULL;
zend_mm_init(heap);
heap->real_size = 0;
heap->real_peak = 0;
heap->size = 0;
heap->peak = 0;
if (heap->segments_list) {
/* mark segment as a free block */
zend_mm_free_block *b = (zend_mm_free_block*)((char*)heap->segments_list + ZEND_MM_ALIGNED_SEGMENT_SIZE);
size_t block_size = heap->segments_list->size - ZEND_MM_ALIGNED_SEGMENT_SIZE - ZEND_MM_ALIGNED_HEADER_SIZE;
ZEND_MM_MARK_FIRST_BLOCK(b);
ZEND_MM_LAST_BLOCK(ZEND_MM_BLOCK_AT(b, block_size));
ZEND_MM_BLOCK(b, ZEND_MM_FREE_BLOCK, block_size);
zend_mm_add_to_free_list(heap, b);
}
if (heap->reserve_size) {
heap->reserve = _zend_mm_alloc_int(heap, heap->reserve_size ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC);
}