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Name	Size	Permission
zend.h	13.59 KB	-rw-r--r--
zend_API.h	69.44 KB	-rw-r--r--
zend_alloc.h	18.76 KB	-rw-r--r--
zend_alloc_sizes.h	2.57 KB	-rw-r--r--
zend_arena.h	5.93 KB	-rw-r--r--
zend_ast.h	11.42 KB	-rw-r--r--
zend_bitset.h	6.72 KB	-rw-r--r--
zend_build.h	1.59 KB	-rw-r--r--
zend_builtin_functions.h	1.47 KB	-rw-r--r--
zend_closures.h	2.16 KB	-rw-r--r--
zend_compile.h	42.62 KB	-rw-r--r--
zend_config.h	32 B	-rw-r--r--
zend_config.w32.h	2.55 KB	-rw-r--r--
zend_constants.h	6.15 KB	-rw-r--r--
zend_cpuinfo.h	7.06 KB	-rw-r--r--
zend_dtrace.h	1.89 KB	-rw-r--r--
zend_errors.h	2 KB	-rw-r--r--
zend_exceptions.h	3.76 KB	-rw-r--r--
zend_execute.h	16.53 KB	-rw-r--r--
zend_extensions.h	5.93 KB	-rw-r--r--
zend_float.h	15.08 KB	-rw-r--r--
zend_gc.h	2.8 KB	-rw-r--r--
zend_generators.h	7.18 KB	-rw-r--r--
zend_globals.h	7.58 KB	-rw-r--r--
zend_globals_macros.h	2.74 KB	-rw-r--r--
zend_hash.h	35.58 KB	-rw-r--r--
zend_highlight.h	2.21 KB	-rw-r--r--
zend_inheritance.h	1.98 KB	-rw-r--r--
zend_ini.h	9.59 KB	-rw-r--r--
zend_ini_parser.h	2.46 KB	-rw-r--r--
zend_ini_scanner.h	1.83 KB	-rw-r--r--
zend_ini_scanner_defs.h	225 B	-rw-r--r--
zend_interfaces.h	4.17 KB	-rw-r--r--
zend_istdiostream.h	1.5 KB	-rw-r--r--
zend_iterators.h	3.32 KB	-rw-r--r--
zend_language_parser.h	5.28 KB	-rw-r--r--
zend_language_scanner.h	2.67 KB	-rw-r--r--
zend_language_scanner_defs.h	310 B	-rw-r--r--
zend_list.h	3.39 KB	-rw-r--r--
zend_llist.h	3.7 KB	-rw-r--r--
zend_long.h	4.2 KB	-rw-r--r--
zend_map_ptr.h	3.09 KB	-rw-r--r--
zend_modules.h	4.68 KB	-rw-r--r--
zend_multibyte.h	4.75 KB	-rw-r--r--
zend_multiply.h	9.61 KB	-rw-r--r--
zend_object_handlers.h	13.19 KB	-rw-r--r--
zend_objects.h	1.76 KB	-rw-r--r--
zend_objects_API.h	4.57 KB	-rw-r--r--
zend_operators.h	33.35 KB	-rw-r--r--
zend_portability.h	19.67 KB	-rw-r--r--
zend_ptr_stack.h	4.21 KB	-rw-r--r--
zend_range_check.h	2.93 KB	-rw-r--r--
zend_signal.h	3.99 KB	-rw-r--r--
zend_smart_str.h	5.4 KB	-rw-r--r--
zend_smart_str_public.h	1.25 KB	-rw-r--r--
zend_smart_string.h	4.29 KB	-rw-r--r--
zend_smart_string_public.h	1.36 KB	-rw-r--r--
zend_sort.h	1.6 KB	-rw-r--r--
zend_stack.h	2.3 KB	-rw-r--r--
zend_stream.h	3.46 KB	-rw-r--r--
zend_string.h	17.06 KB	-rw-r--r--
zend_strtod.h	1.81 KB	-rw-r--r--
zend_strtod_int.h	3.42 KB	-rw-r--r--
zend_ts_hash.h	5.6 KB	-rw-r--r--
zend_type_info.h	3.02 KB	-rw-r--r--
zend_types.h	39.58 KB	-rw-r--r--
zend_variables.h	3.2 KB	-rw-r--r--
zend_virtual_cwd.h	12.44 KB	-rw-r--r--
zend_vm.h	1.91 KB	-rw-r--r--
zend_vm_def.h	264.93 KB	-rw-r--r--
zend_vm_execute.h	1.92 MB	-rw-r--r--
zend_vm_handlers.h	85.91 KB	-rw-r--r--
zend_vm_opcodes.h	11.8 KB	-rw-r--r--
zend_vm_trace_handlers.h	3.14 KB	-rw-r--r--
zend_vm_trace_map.h	2.59 KB	-rw-r--r--
zend_weakrefs.h	1.41 KB	-rw-r--r--

Code Editor : zend_arena.h

/*
   +----------------------------------------------------------------------+
   | Zend Engine                                                          |
   +----------------------------------------------------------------------+
   | Copyright (c) Zend Technologies Ltd. (http://www.zend.com)           |
   +----------------------------------------------------------------------+
   | This source file is subject to version 2.00 of the Zend 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.zend.com/license/2_00.txt.                                |
   | If you did not receive a copy of the Zend license and are unable to  |
   | obtain it through the world-wide-web, please send a note to          |
   | license@zend.com so we can mail you a copy immediately.              |
   +----------------------------------------------------------------------+
   | Authors: Dmitry Stogov <dmitry@php.net>                              |
   +----------------------------------------------------------------------+
*/

#ifndef _ZEND_ARENA_H_
#define _ZEND_ARENA_H_

#include "zend.h"

#ifndef ZEND_TRACK_ARENA_ALLOC

typedef struct _zend_arena zend_arena;

struct _zend_arena {
	char		*ptr;
	char		*end;
	zend_arena  *prev;
};

static zend_always_inline zend_arena* zend_arena_create(size_t size)
{
	zend_arena *arena = (zend_arena*)emalloc(size);

arena->ptr = (char*) arena + ZEND_MM_ALIGNED_SIZE(sizeof(zend_arena));
	arena->end = (char*) arena + size;
	arena->prev = NULL;
	return arena;
}

static zend_always_inline void zend_arena_destroy(zend_arena *arena)
{
	do {
		zend_arena *prev = arena->prev;
		efree(arena);
		arena = prev;
	} while (arena);
}

static zend_always_inline void* zend_arena_alloc(zend_arena **arena_ptr, size_t size)
{
	zend_arena *arena = *arena_ptr;
	char *ptr = arena->ptr;

size = ZEND_MM_ALIGNED_SIZE(size);

if (EXPECTED(size <= (size_t)(arena->end - ptr))) {
		arena->ptr = ptr + size;
	} else {
		size_t arena_size =
			UNEXPECTED((size + ZEND_MM_ALIGNED_SIZE(sizeof(zend_arena))) > (size_t)(arena->end - (char*) arena)) ?
				(size + ZEND_MM_ALIGNED_SIZE(sizeof(zend_arena))) :
				(size_t)(arena->end - (char*) arena);
		zend_arena *new_arena = (zend_arena*)emalloc(arena_size);

ptr = (char*) new_arena + ZEND_MM_ALIGNED_SIZE(sizeof(zend_arena));
		new_arena->ptr = (char*) new_arena + ZEND_MM_ALIGNED_SIZE(sizeof(zend_arena)) + size;
		new_arena->end = (char*) new_arena + arena_size;
		new_arena->prev = arena;
		*arena_ptr = new_arena;
	}

return (void*) ptr;
}

static zend_always_inline void* zend_arena_calloc(zend_arena **arena_ptr, size_t count, size_t unit_size)
{
	int overflow;
	size_t size;
	void *ret;

size = zend_safe_address(unit_size, count, 0, &overflow);
	if (UNEXPECTED(overflow)) {
		zend_error(E_ERROR, "Possible integer overflow in zend_arena_calloc() (%zu * %zu)", unit_size, count);
	}
	ret = zend_arena_alloc(arena_ptr, size);
	memset(ret, 0, size);
	return ret;
}

static zend_always_inline void* zend_arena_checkpoint(zend_arena *arena)
{
	return arena->ptr;
}

static zend_always_inline void zend_arena_release(zend_arena **arena_ptr, void *checkpoint)
{
	zend_arena *arena = *arena_ptr;

while (UNEXPECTED((char*)checkpoint > arena->end) ||
	       UNEXPECTED((char*)checkpoint <= (char*)arena)) {
		zend_arena *prev = arena->prev;
		efree(arena);
		*arena_ptr = arena = prev;
	}
	ZEND_ASSERT((char*)checkpoint > (char*)arena && (char*)checkpoint <= arena->end);
	arena->ptr = (char*)checkpoint;
}

static zend_always_inline zend_bool zend_arena_contains(zend_arena *arena, void *ptr)
{
	while (arena) {
		if ((char*)ptr > (char*)arena && (char*)ptr <= arena->ptr) {
			return 1;
		}
		arena = arena->prev;
	}
	return 0;
}

#else

/* Use normal allocations and keep track of them for mass-freeing.
 * This is intended for use with asan/valgrind. */

typedef struct _zend_arena zend_arena;

struct _zend_arena {
	void **ptr;
	void **end;
	struct _zend_arena *prev;
	void *ptrs[0];
};

#define ZEND_TRACKED_ARENA_SIZE 1000

static zend_always_inline zend_arena *zend_arena_create(size_t _size)
{
	zend_arena *arena = (zend_arena*) emalloc(
		sizeof(zend_arena) + sizeof(void *) * ZEND_TRACKED_ARENA_SIZE);
	arena->ptr = &arena->ptrs[0];
	arena->end = &arena->ptrs[ZEND_TRACKED_ARENA_SIZE];
	arena->prev = NULL;
	return arena;
}

static zend_always_inline void zend_arena_destroy(zend_arena *arena)
{
	do {
		zend_arena *prev = arena->prev;
		void **ptr;
		for (ptr = arena->ptrs; ptr < arena->ptr; ptr++) {
			efree(*ptr);
		}
		efree(arena);
		arena = prev;
	} while (arena);
}

static zend_always_inline void *zend_arena_alloc(zend_arena **arena_ptr, size_t size)
{
	zend_arena *arena = *arena_ptr;
	if (arena->ptr == arena->end) {
		*arena_ptr = zend_arena_create(0);
		(*arena_ptr)->prev = arena;
		arena = *arena_ptr;
	}

return *arena->ptr++ = emalloc(size);
}

static zend_always_inline void* zend_arena_calloc(zend_arena **arena_ptr, size_t count, size_t unit_size)
{
	int overflow;
	size_t size;
	void *ret;

static zend_always_inline void* zend_arena_checkpoint(zend_arena *arena)
{
	return arena->ptr;
}

static zend_always_inline void zend_arena_release(zend_arena **arena_ptr, void *checkpoint)
{
	while (1) {
		zend_arena *arena = *arena_ptr;
		zend_arena *prev = arena->prev;
		while (1) {
			if (arena->ptr == (void **) checkpoint) {
				return;
			}
			if (arena->ptr == arena->ptrs) {
				break;
			}
			arena->ptr--;
			efree(*arena->ptr);
		}
		efree(arena);
		*arena_ptr = prev;
		ZEND_ASSERT(*arena_ptr);
	}
}

static zend_always_inline zend_bool zend_arena_contains(zend_arena *arena, void *ptr)
{
	/* TODO: Dummy */
	return 1;
}

#endif

#endif /* _ZEND_ARENA_H_ */

${this.title}

Code Editor : zend_arena.h