D7net
Home
Console
Upload
information
Create File
Create Folder
About
Tools
:
/
proc
/
self
/
root
/
opt
/
alt
/
php84
/
usr
/
include
/
php
/
Zend
/
Optimizer
/
Filename :
zend_worklist.h
back
Copy
/* +----------------------------------------------------------------------+ | Zend Engine | +----------------------------------------------------------------------+ | Copyright (c) The PHP Group | +----------------------------------------------------------------------+ | This source file is subject to version 3.01 of the PHP license, | | that is bundled with this package in the file LICENSE, and is | | available through the world-wide-web at the following url: | | https://www.php.net/license/3_01.txt | | If you did not receive a copy of the PHP license and are unable to | | obtain it through the world-wide-web, please send a note to | | license@php.net so we can mail you a copy immediately. | +----------------------------------------------------------------------+ | Authors: Andy Wingo <wingo@igalia.com> | +----------------------------------------------------------------------+ */ #ifndef _ZEND_WORKLIST_H_ #define _ZEND_WORKLIST_H_ #include "zend_arena.h" #include "zend_bitset.h" typedef struct _zend_worklist_stack { int *buf; int len; int capacity; } zend_worklist_stack; #define ZEND_WORKLIST_STACK_ALLOCA(s, _len, use_heap) do { \ (s)->buf = (int*)do_alloca(sizeof(int) * _len, use_heap); \ (s)->len = 0; \ (s)->capacity = _len; \ } while (0) #define ZEND_WORKLIST_STACK_FREE_ALLOCA(s, use_heap) \ free_alloca((s)->buf, use_heap) static inline void zend_worklist_stack_prepare(zend_arena **arena, zend_worklist_stack *stack, int len) { ZEND_ASSERT(len >= 0); stack->buf = (int*)zend_arena_calloc(arena, sizeof(*stack->buf), len); stack->len = 0; stack->capacity = len; } static inline void zend_worklist_stack_push(zend_worklist_stack *stack, int i) { ZEND_ASSERT(stack->len < stack->capacity); stack->buf[stack->len++] = i; } static inline int zend_worklist_stack_peek(const zend_worklist_stack *stack) { ZEND_ASSERT(stack->len); return stack->buf[stack->len - 1]; } static inline int zend_worklist_stack_pop(zend_worklist_stack *stack) { ZEND_ASSERT(stack->len); return stack->buf[--stack->len]; } typedef struct _zend_worklist { zend_bitset visited; zend_worklist_stack stack; } zend_worklist; #define ZEND_WORKLIST_ALLOCA(w, _len, use_heap) do { \ (w)->stack.buf = (int*)do_alloca(ZEND_MM_ALIGNED_SIZE(sizeof(int) * _len) + sizeof(zend_ulong) * zend_bitset_len(_len), use_heap); \ (w)->stack.len = 0; \ (w)->stack.capacity = _len; \ (w)->visited = (zend_bitset)((char*)(w)->stack.buf + ZEND_MM_ALIGNED_SIZE(sizeof(int) * _len)); \ memset((w)->visited, 0, sizeof(zend_ulong) * zend_bitset_len(_len)); \ } while (0) #define ZEND_WORKLIST_FREE_ALLOCA(w, use_heap) \ free_alloca((w)->stack.buf, use_heap) static inline void zend_worklist_prepare(zend_arena **arena, zend_worklist *worklist, int len) { ZEND_ASSERT(len >= 0); worklist->visited = (zend_bitset)zend_arena_calloc(arena, sizeof(zend_ulong), zend_bitset_len(len)); zend_worklist_stack_prepare(arena, &worklist->stack, len); } static inline int zend_worklist_len(const zend_worklist *worklist) { return worklist->stack.len; } static inline bool zend_worklist_push(zend_worklist *worklist, int i) { ZEND_ASSERT(i >= 0 && i < worklist->stack.capacity); if (zend_bitset_in(worklist->visited, i)) { return 0; } zend_bitset_incl(worklist->visited, i); zend_worklist_stack_push(&worklist->stack, i); return 1; } static inline int zend_worklist_peek(const zend_worklist *worklist) { return zend_worklist_stack_peek(&worklist->stack); } static inline int zend_worklist_pop(zend_worklist *worklist) { /* Does not clear visited flag */ return zend_worklist_stack_pop(&worklist->stack); } #endif /* _ZEND_WORKLIST_H_ */