1 /* 2 +----------------------------------------------------------------------+ 3 | Zend Engine | 4 +----------------------------------------------------------------------+ 5 | Copyright (c) Zend Technologies Ltd. (http://www.zend.com) | 6 +----------------------------------------------------------------------+ 7 | This source file is subject to version 2.00 of the Zend license, | 8 | that is bundled with this package in the file LICENSE, and is | 9 | available through the world-wide-web at the following url: | 10 | http://www.zend.com/license/2_00.txt. | 11 | If you did not receive a copy of the Zend license and are unable to | 12 | obtain it through the world-wide-web, please send a note to | 13 | license@zend.com so we can mail you a copy immediately. | 14 +----------------------------------------------------------------------+ 15 | Authors: Dmitry Stogov <dmitry@php.net> | 16 +----------------------------------------------------------------------+ 17 */ 18 19 #ifndef ZEND_MAP_PTR_H 20 #define ZEND_MAP_PTR_H 21 22 #include "zend_portability.h" 23 24 typedef struct _zend_string zend_string; 25 26 #define ZEND_MAP_PTR_KIND_PTR 0 27 #define ZEND_MAP_PTR_KIND_PTR_OR_OFFSET 1 28 29 #define ZEND_MAP_PTR_KIND ZEND_MAP_PTR_KIND_PTR_OR_OFFSET 30 31 #define ZEND_MAP_PTR(ptr) \ 32 ptr ## __ptr 33 #define ZEND_MAP_PTR_DEF(type, name) \ 34 type ZEND_MAP_PTR(name) 35 #define ZEND_MAP_PTR_OFFSET2PTR(offset) \ 36 ((void**)((char*)CG(map_ptr_base) + offset)) 37 #define ZEND_MAP_PTR_PTR2OFFSET(ptr) \ 38 ((void*)(((char*)(ptr)) - ((char*)CG(map_ptr_base)))) 39 #define ZEND_MAP_PTR_INIT(ptr, val) do { \ 40 ZEND_MAP_PTR(ptr) = (val); \ 41 } while (0) 42 #define ZEND_MAP_PTR_NEW(ptr) do { \ 43 ZEND_MAP_PTR(ptr) = zend_map_ptr_new(); \ 44 } while (0) 45 #define ZEND_MAP_PTR_NEW_STATIC(ptr) do { \ 46 ZEND_MAP_PTR(ptr) = zend_map_ptr_new_static(); \ 47 } while (0) 48 49 #if ZEND_MAP_PTR_KIND == ZEND_MAP_PTR_KIND_PTR_OR_OFFSET 50 # define ZEND_MAP_PTR_NEW_OFFSET() \ 51 ((uint32_t)(uintptr_t)zend_map_ptr_new()) 52 # define ZEND_MAP_PTR_IS_OFFSET(ptr) \ 53 (((uintptr_t)ZEND_MAP_PTR(ptr)) & 1L) 54 # define ZEND_MAP_PTR_GET(ptr) \ 55 ((ZEND_MAP_PTR_IS_OFFSET(ptr) ? \ 56 ZEND_MAP_PTR_GET_IMM(ptr) : \ 57 ((void*)(ZEND_MAP_PTR(ptr))))) 58 # define ZEND_MAP_PTR_GET_IMM(ptr) \ 59 (*ZEND_MAP_PTR_OFFSET2PTR((intptr_t)ZEND_MAP_PTR(ptr))) 60 # define ZEND_MAP_PTR_SET(ptr, val) do { \ 61 if (ZEND_MAP_PTR_IS_OFFSET(ptr)) { \ 62 ZEND_MAP_PTR_SET_IMM(ptr, val); \ 63 } else { \ 64 ZEND_MAP_PTR_INIT(ptr, val); \ 65 } \ 66 } while (0) 67 # define ZEND_MAP_PTR_SET_IMM(ptr, val) do { \ 68 void **__p = ZEND_MAP_PTR_OFFSET2PTR((intptr_t)ZEND_MAP_PTR(ptr)); \ 69 *__p = (val); \ 70 } while (0) 71 # define ZEND_MAP_PTR_BIASED_BASE(real_base) \ 72 ((void*)(((uintptr_t)(real_base)) + zend_map_ptr_static_size * sizeof(void *) - 1)) 73 #else 74 # error "Unknown ZEND_MAP_PTR_KIND" 75 #endif 76 77 BEGIN_EXTERN_C() 78 79 ZEND_API void zend_map_ptr_reset(void); 80 ZEND_API void *zend_map_ptr_new(void); 81 ZEND_API void *zend_map_ptr_new_static(void); 82 ZEND_API void zend_map_ptr_extend(size_t last); 83 ZEND_API void zend_alloc_ce_cache(zend_string *type_name); 84 85 ZEND_API extern size_t zend_map_ptr_static_last; 86 ZEND_API extern size_t zend_map_ptr_static_size; 87 88 END_EXTERN_C() 89 90 #endif /* ZEND_MAP_PTR_H */ 91
