golden hour

/opt/alt/php74/usr/include/php/Zend

File/Folder	Size	Actions
zend.h	13.59 KB
zend_API.h	69.44 KB
zend_alloc.h	18.76 KB
zend_alloc_sizes.h	2.57 KB
zend_arena.h	5.93 KB
zend_ast.h	11.42 KB
zend_bitset.h	6.72 KB
zend_build.h	1.59 KB
zend_builtin_functions.h	1.47 KB
zend_closures.h	2.16 KB
zend_compile.h	42.62 KB
zend_config.h	32 B
zend_config.w32.h	2.55 KB
zend_constants.h	6.15 KB
zend_cpuinfo.h	7.06 KB
zend_dtrace.h	1.89 KB
zend_errors.h	2 KB
zend_exceptions.h	3.76 KB
zend_execute.h	16.53 KB
zend_extensions.h	5.93 KB
zend_float.h	15.08 KB
zend_gc.h	2.8 KB
zend_generators.h	7.18 KB
zend_globals.h	7.58 KB
zend_globals_macros.h	2.74 KB
zend_hash.h	35.58 KB
zend_highlight.h	2.21 KB
zend_inheritance.h	1.98 KB
zend_ini.h	9.59 KB
zend_ini_parser.h	2.46 KB
zend_ini_scanner.h	1.83 KB
zend_ini_scanner_defs.h	225 B
zend_interfaces.h	4.17 KB
zend_istdiostream.h	1.5 KB
zend_iterators.h	3.32 KB
zend_language_parser.h	5.28 KB
zend_language_scanner.h	2.67 KB
zend_language_scanner_defs.h	310 B
zend_list.h	3.39 KB
zend_llist.h	3.7 KB
zend_long.h	4.2 KB
zend_map_ptr.h	3.09 KB
zend_modules.h	4.68 KB
zend_multibyte.h	4.75 KB
zend_multiply.h	9.61 KB
zend_object_handlers.h	13.19 KB
zend_objects.h	1.76 KB
zend_objects_API.h	4.57 KB
zend_operators.h	33.35 KB
zend_portability.h	19.67 KB
zend_ptr_stack.h	4.21 KB
zend_range_check.h	2.93 KB
zend_signal.h	3.99 KB
zend_smart_str.h	5.4 KB
zend_smart_str_public.h	1.25 KB
zend_smart_string.h	4.29 KB
zend_smart_string_public.h	1.36 KB
zend_sort.h	1.6 KB
zend_stack.h	2.3 KB
zend_stream.h	3.46 KB
zend_string.h	17.3 KB
zend_strtod.h	1.81 KB
zend_strtod_int.h	3.42 KB
zend_ts_hash.h	5.6 KB
zend_type_info.h	3.02 KB
zend_types.h	39.58 KB
zend_variables.h	3.2 KB
zend_virtual_cwd.h	12.44 KB
zend_vm.h	1.91 KB
zend_vm_def.h	264.93 KB
zend_vm_execute.h	1.92 MB
zend_vm_handlers.h	85.91 KB
zend_vm_opcodes.h	11.8 KB
zend_vm_trace_handlers.h	3.14 KB
zend_vm_trace_map.h	2.59 KB
zend_weakrefs.h	1.41 KB

Edit: zend_gc.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: David Wang <planetbeing@gmail.com>                          |
   |          Dmitry Stogov <dmitry@php.net>                              |
   +----------------------------------------------------------------------+
*/

#ifndef ZEND_GC_H
#define ZEND_GC_H

BEGIN_EXTERN_C()

typedef struct _zend_gc_status {
	uint32_t runs;
	uint32_t collected;
	uint32_t threshold;
	uint32_t num_roots;
} zend_gc_status;

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);

/* enable/disable automatic start of GC collection */
ZEND_API zend_bool gc_enable(zend_bool enable);
ZEND_API zend_bool gc_enabled(void);

/* enable/disable possible root additions */
ZEND_API zend_bool gc_protect(zend_bool protect);
ZEND_API zend_bool gc_protected(void);

/* The default implementation of the gc_collect_cycles callback. */
ZEND_API int  zend_gc_collect_cycles(void);

ZEND_API void zend_gc_get_status(zend_gc_status *status);

void gc_globals_ctor(void);
void gc_globals_dtor(void);
void gc_reset(void);

#ifdef ZTS
size_t zend_gc_globals_size(void);
#endif

END_EXTERN_C()

#define GC_REMOVE_FROM_BUFFER(p) do { \
		zend_refcounted *_p = (zend_refcounted*)(p); \
		if (GC_TYPE_INFO(_p) & GC_INFO_MASK) { \
			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 (EXPECTED(GC_TYPE_INFO(ref) == IS_REFERENCE)) {
		zval *zv = &((zend_reference*)ref)->val;

if (!Z_COLLECTABLE_P(zv)) {
			return;
		}
		ref = Z_COUNTED_P(zv);
	}
	if (UNEXPECTED(GC_MAY_LEAK(ref))) {
		gc_possible_root(ref);
	}
}

#endif /* ZEND_GC_H */