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|
/*
+----------------------------------------------------------------------+
| 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: |
| https://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. |
+----------------------------------------------------------------------+
| Author: Florian Engelhardt <florian@engelhardt.tc> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "php_test.h"
#include "Zend/zend_alloc.h"
#include "zend_portability.h"
#include <stddef.h>
#include <stdio.h>
void* observe_malloc(size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
void *ptr = NULL;
if (ZT_G(custom_malloc)) {
zend_mm_set_heap(ZT_G(original_heap));
ptr = ZT_G(custom_malloc)(size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
zend_mm_set_heap(ZT_G(observed_heap));
} else {
ptr = _zend_mm_alloc(ZT_G(original_heap), size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
printf("Allocated %zu bytes at %p\n", size, ptr);
return ptr;
}
void observe_free(void* ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
if (ZT_G(custom_free))
{
zend_mm_set_heap(ZT_G(original_heap));
ZT_G(custom_free)(ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
zend_mm_set_heap(ZT_G(observed_heap));
} else {
_zend_mm_free(ZT_G(original_heap), ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
printf("Freed memory at %p\n", ptr);
}
void* observe_realloc(void* ptr, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
void * new_ptr;
if (ZT_G(custom_realloc))
{
zend_mm_set_heap(ZT_G(original_heap));
new_ptr = ZT_G(custom_realloc)(ptr, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
zend_mm_set_heap(ZT_G(observed_heap));
} else {
new_ptr = _zend_mm_realloc(ZT_G(original_heap), ptr, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
printf("Realloc of %zu bytes from %p to %p\n", size, ptr, new_ptr);
return new_ptr;
}
size_t observe_gc(void)
{
size_t size = 0;
if (ZT_G(custom_gc)) {
zend_mm_set_heap(ZT_G(original_heap));
size = ZT_G(custom_gc)();
zend_mm_set_heap(ZT_G(observed_heap));
} else {
size = zend_mm_gc(ZT_G(original_heap));
}
printf("ZendMM GC freed %zu bytes", size);
return size;
}
void observe_shutdown(bool full, bool silent)
{
if (ZT_G(custom_shutdown)) {
zend_mm_set_heap(ZT_G(original_heap));
ZT_G(custom_shutdown)(full, silent);
zend_mm_set_heap(ZT_G(observed_heap));
} else {
zend_mm_shutdown(ZT_G(original_heap), full, silent);
}
printf("Shutdown happened: full -> %d, silent -> %d\n", full, silent);
}
void zend_test_mm_custom_handlers_init(void)
{
if (ZT_G(observed_heap) != NULL) {
return;
}
ZT_G(original_heap) = zend_mm_get_heap();
if (zend_mm_is_custom_heap(ZT_G(original_heap))) {
zend_mm_get_custom_handlers_ex(
ZT_G(original_heap),
&ZT_G(custom_malloc),
&ZT_G(custom_free),
&ZT_G(custom_realloc),
&ZT_G(custom_gc),
&ZT_G(custom_shutdown)
);
}
printf("Prev handlers at %p, %p, %p, %p, %p\n", ZT_G(custom_malloc), ZT_G(custom_free), ZT_G(custom_realloc), ZT_G(custom_gc), ZT_G(custom_shutdown));
ZT_G(observed_heap) = zend_mm_startup();
zend_mm_set_custom_handlers_ex(
ZT_G(observed_heap),
observe_malloc,
observe_free,
observe_realloc,
observe_gc,
observe_shutdown
);
zend_mm_set_heap(ZT_G(observed_heap));
printf("Heap at %p installed in ZendMM (orig at %p)\n", ZT_G(observed_heap), ZT_G(original_heap));
}
void zend_test_mm_custom_handlers_shutdown(void)
{
if (ZT_G(observed_heap) == NULL) {
return;
}
zend_mm_set_heap(ZT_G(original_heap));
zend_mm_set_custom_handlers_ex(
ZT_G(observed_heap),
NULL,
NULL,
NULL,
NULL,
NULL
);
zend_mm_shutdown(ZT_G(observed_heap), true, true);
ZT_G(observed_heap) = NULL;
printf("Prev heap at %p restored in ZendMM\n", ZT_G(original_heap));
}
void zend_test_mm_custom_handlers_rshutdown(void)
{
zend_test_mm_custom_handlers_shutdown();
}
void zend_test_mm_custom_handlers_rinit(void)
{
if (ZT_G(zend_mm_custom_handlers_enabled)) {
zend_test_mm_custom_handlers_init();
}
}
static PHP_INI_MH(OnUpdateZendTestMMCustomHandlersEnabled)
{
if (new_value == NULL) {
return FAILURE;
}
int int_value = zend_ini_parse_bool(new_value);
if (int_value == 1) {
zend_test_mm_custom_handlers_init();
} else {
zend_test_mm_custom_handlers_shutdown();
}
return OnUpdateBool(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
PHP_INI_BEGIN()
STD_PHP_INI_BOOLEAN("zend_test.zend_mm_custom_handlers.enabled", "0", PHP_INI_USER, OnUpdateZendTestMMCustomHandlersEnabled, zend_mm_custom_handlers_enabled, zend_zend_test_globals, zend_test_globals)
PHP_INI_END()
void zend_test_mm_custom_handlers_minit(INIT_FUNC_ARGS)
{
if (type != MODULE_TEMPORARY) {
REGISTER_INI_ENTRIES();
} else {
(void)ini_entries;
}
}
|
