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📄 zend.h(12.09 KB)
📄 zend_API.h(55.48 KB)
📄 zend_alloc.h(18.78 KB)
📄 zend_alloc_sizes.h(2.57 KB)
📄 zend_arena.h(3.65 KB)
📄 zend_ast.h(8.12 KB)
📄 zend_bitset.h(6.71 KB)
📄 zend_build.h(1.59 KB)
📄 zend_builtin_functions.h(1.58 KB)
📄 zend_closures.h(2.03 KB)
📄 zend_compile.h(32.53 KB)
📄 zend_config.h(107 B)
📄 zend_config.nw.h(2.44 KB)
📄 zend_constants.h(5.87 KB)
📄 zend_dtrace.h(1.91 KB)
📄 zend_errors.h(2.11 KB)
📄 zend_exceptions.h(3.85 KB)
📄 zend_execute.h(13.93 KB)
📄 zend_extensions.h(5.85 KB)
📄 zend_float.h(15.19 KB)
📄 zend_gc.h(4.77 KB)
📄 zend_generators.h(7.33 KB)
📄 zend_globals.h(7.14 KB)
📄 zend_globals_macros.h(2.71 KB)
📄 zend_hash.h(32.2 KB)
📄 zend_highlight.h(2.32 KB)
📄 zend_inheritance.h(1.91 KB)
📄 zend_ini.h(9.4 KB)
📄 zend_ini_parser.h(2.83 KB)
📄 zend_ini_scanner.h(1.93 KB)
📄 zend_ini_scanner_defs.h(224 B)
📄 zend_interfaces.h(4.22 KB)
📄 zend_istdiostream.h(1.61 KB)
📄 zend_iterators.h(3.5 KB)
📄 zend_language_parser.h(8.1 KB)
📄 zend_language_scanner.h(2.72 KB)
📄 zend_language_scanner_defs.h(296 B)
📄 zend_list.h(3.17 KB)
📄 zend_llist.h(3.81 KB)
📄 zend_long.h(4.3 KB)
📄 zend_modules.h(4.78 KB)
📄 zend_multibyte.h(4.88 KB)
📄 zend_multiply.h(8.27 KB)
📄 zend_object_handlers.h(9.17 KB)
📄 zend_objects.h(1.83 KB)
📄 zend_objects_API.h(3.54 KB)
📄 zend_operators.h(28.46 KB)
📄 zend_portability.h(13.4 KB)
📄 zend_ptr_stack.h(4.22 KB)
📄 zend_range_check.h(3.02 KB)
📄 zend_signal.h(4 KB)
📄 zend_smart_str.h(4.51 KB)
📄 zend_smart_str_public.h(1.25 KB)
📄 zend_sort.h(1.7 KB)
📄 zend_stack.h(2.41 KB)
📄 zend_stream.h(3.23 KB)
📄 zend_string.h(13.81 KB)
📄 zend_strtod.h(1.82 KB)
📄 zend_strtod_int.h(3.42 KB)
📄 zend_ts_hash.h(6.5 KB)
📄 zend_type_info.h(3.12 KB)
📄 zend_types.h(31.49 KB)
📄 zend_variables.h(5.34 KB)
📄 zend_virtual_cwd.h(12.47 KB)
📄 zend_vm.h(1.68 KB)
📄 zend_vm_def.h(250.21 KB)
📄 zend_vm_execute.h(1.9 MB)
📄 zend_vm_opcodes.h(11.9 KB)

Editing: zend_arena.h

/*
   +----------------------------------------------------------------------+
   | Zend Engine                                                          |
   +----------------------------------------------------------------------+
   | Copyright (c) 1998-2018 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@zend.com>                             |
   +----------------------------------------------------------------------+
*/

/* $Id:$ */

#ifndef _ZEND_ARENA_H_
#define _ZEND_ARENA_H_

#include "zend.h"

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);
}

#define ZEND_ARENA_ALIGNMENT 8U

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;
}

#endif /* _ZEND_ARENA_H_ */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * indent-tabs-mode: t
 * End:
 */

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Editing: zend_arena.h

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