/usr/include/php/20170718/Zend/zend_gc.h is in php7.2-dev 7.2.3-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 | /*
+----------------------------------------------------------------------+
| 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: David Wang <planetbeing@gmail.com> |
| Dmitry Stogov <dmitry@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifndef ZEND_GC_H
#define ZEND_GC_H
#ifndef GC_BENCH
# define GC_BENCH 0
#endif
#if GC_BENCH
# define GC_BENCH_INC(counter) GC_G(counter)++
# define GC_BENCH_DEC(counter) GC_G(counter)--
# define GC_BENCH_PEAK(peak, counter) do { \
if (GC_G(counter) > GC_G(peak)) { \
GC_G(peak) = GC_G(counter); \
} \
} while (0)
#else
# define GC_BENCH_INC(counter)
# define GC_BENCH_DEC(counter)
# define GC_BENCH_PEAK(peak, counter)
#endif
#define GC_COLOR 0xc000
#define GC_BLACK 0x0000
#define GC_WHITE 0x8000
#define GC_GREY 0x4000
#define GC_PURPLE 0xc000
#define GC_ADDRESS(v) \
((v) & ~GC_COLOR)
#define GC_INFO_GET_COLOR(v) \
(((zend_uintptr_t)(v)) & GC_COLOR)
#define GC_INFO_SET_ADDRESS(v, a) \
do {(v) = ((v) & GC_COLOR) | (a);} while (0)
#define GC_INFO_SET_COLOR(v, c) \
do {(v) = ((v) & ~GC_COLOR) | (c);} while (0)
#define GC_INFO_SET_BLACK(v) \
do {(v) = (v) & ~GC_COLOR;} while (0)
#define GC_INFO_SET_PURPLE(v) \
do {(v) = (v) | GC_COLOR;} while (0)
typedef struct _gc_root_buffer {
zend_refcounted *ref;
struct _gc_root_buffer *next; /* double-linked list */
struct _gc_root_buffer *prev;
uint32_t refcount;
} gc_root_buffer;
#define GC_NUM_ADDITIONAL_ENTRIES \
((4096 - ZEND_MM_OVERHEAD - sizeof(void*) * 2) / sizeof(gc_root_buffer))
typedef struct _gc_additional_bufer gc_additional_buffer;
struct _gc_additional_bufer {
uint32_t used;
gc_additional_buffer *next;
gc_root_buffer buf[GC_NUM_ADDITIONAL_ENTRIES];
};
typedef struct _zend_gc_globals {
zend_bool gc_enabled;
zend_bool gc_active;
zend_bool gc_full;
gc_root_buffer *buf; /* preallocated arrays of buffers */
gc_root_buffer roots; /* list of possible roots of cycles */
gc_root_buffer *unused; /* list of unused buffers */
gc_root_buffer *first_unused; /* pointer to first unused buffer */
gc_root_buffer *last_unused; /* pointer to last unused buffer */
gc_root_buffer to_free; /* list to free */
gc_root_buffer *next_to_free;
uint32_t gc_runs;
uint32_t collected;
#if GC_BENCH
uint32_t root_buf_length;
uint32_t root_buf_peak;
uint32_t zval_possible_root;
uint32_t zval_buffered;
uint32_t zval_remove_from_buffer;
uint32_t zval_marked_grey;
#endif
gc_additional_buffer *additional_buffer;
} zend_gc_globals;
#ifdef ZTS
BEGIN_EXTERN_C()
ZEND_API extern int gc_globals_id;
END_EXTERN_C()
#define GC_G(v) ZEND_TSRMG(gc_globals_id, zend_gc_globals *, v)
#else
#define GC_G(v) (gc_globals.v)
extern ZEND_API zend_gc_globals gc_globals;
#endif
BEGIN_EXTERN_C()
ZEND_API extern int (*gc_collect_cycles)(void);
ZEND_API void ZEND_FASTCALL gc_possible_root(zend_refcounted *ref);
ZEND_API void ZEND_FASTCALL gc_remove_from_buffer(zend_refcounted *ref);
ZEND_API void gc_globals_ctor(void);
ZEND_API void gc_globals_dtor(void);
ZEND_API void gc_init(void);
ZEND_API void gc_reset(void);
/* The default implementation of the gc_collect_cycles callback. */
ZEND_API int zend_gc_collect_cycles(void);
END_EXTERN_C()
#define GC_REMOVE_FROM_BUFFER(p) do { \
zend_refcounted *_p = (zend_refcounted*)(p); \
if (GC_ADDRESS(GC_INFO(_p))) { \
gc_remove_from_buffer(_p); \
} \
} while (0)
#define GC_MAY_LEAK(ref) \
((GC_TYPE_INFO(ref) & \
(GC_INFO_MASK | (GC_COLLECTABLE << GC_FLAGS_SHIFT))) == \
(GC_COLLECTABLE << GC_FLAGS_SHIFT))
static zend_always_inline void gc_check_possible_root(zend_refcounted *ref)
{
if (GC_TYPE(ref) == IS_REFERENCE) {
zval *zv = &((zend_reference*)ref)->val;
if (!Z_REFCOUNTED_P(zv)) {
return;
}
ref = Z_COUNTED_P(zv);
}
if (UNEXPECTED(GC_MAY_LEAK(ref))) {
gc_possible_root(ref);
}
}
#endif /* ZEND_GC_H */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
|