PHP memory allocation problem

If PHP fails to allocate memory it returns one of the following errors:

• Allowed memory size of %ld bytes exhausted at %s:%d (tried to allocate %lu bytes)

OR

• Out of memory (allocated %ld) at %s:%d (tried to allocate %lu bytes)

No 1 occurs when PHP memory limit is reached and it is the limit which is controlled by memory_limit setting at php.ini.
No 2 comes from the operating system, php limit is not reached and changing php.ini will not help whatever people are advising about it.

Just have a look at the source of zend_alloc.c if you have doubts ...

		if (segment_size < true_size ||
		    heap->real_size + segment_size > heap->limit) {
			/* Memory limit overflow */
#if ZEND_MM_CACHE
			zend_mm_free_cache(heap);
#endif
			HANDLE_UNBLOCK_INTERRUPTIONS();
#if ZEND_DEBUG
			zend_mm_safe_error(heap,
"Allowed memory size of %ld bytes exhausted at %s:%d (tried to allocate %lu bytes)", 
			heap->limit, __zend_filename, __zend_lineno, size);
#else
			zend_mm_safe_error(heap, 
"Allowed memory size of %ld bytes exhausted (tried to allocate %lu bytes)", 
			heap->limit, size);
#endif
		}
 
		segment = (zend_mm_segment *) ZEND_MM_STORAGE_ALLOC(segment_size);
 
		if (!segment) {
			/* Storage manager cannot allocate memory */
#if ZEND_MM_CACHE
			zend_mm_free_cache(heap);
#endif
			HANDLE_UNBLOCK_INTERRUPTIONS();
out_of_memory:
#if ZEND_DEBUG
			zend_mm_safe_error(heap, 
			"Out of memory (allocated %ld) at %s:%d (tried to allocate %lu bytes)", 
			heap->real_size, __zend_filename, __zend_lineno, size);
#else
			zend_mm_safe_error(heap, 
			"Out of memory (allocated %ld) (tried to allocate %lu bytes)", 
			heap->real_size, size);
#endif
			return NULL;
		}
 

^ TOP

17/04/2008

Комментарии

 

Ваш комментарий:
Имя (запомнить ):
Веб-сайт (при желании):
E-mail (при желании):