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59 lines
2.4 KiB
C
59 lines
2.4 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2002 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available at through the world-wide-web at |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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+----------------------------------------------------------------------+
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*/
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#ifndef ZEND_PTR_STACK_H
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#define ZEND_PTR_STACK_H
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typedef struct _zend_ptr_stack {
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int top, max;
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void **elements;
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void **top_element;
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} zend_ptr_stack;
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#define PTR_STACK_BLOCK_SIZE 64
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ZEND_API void zend_ptr_stack_init(zend_ptr_stack *stack);
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ZEND_API void zend_ptr_stack_n_push(zend_ptr_stack *stack, int count, ...);
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ZEND_API void zend_ptr_stack_n_pop(zend_ptr_stack *stack, int count, ...);
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ZEND_API void zend_ptr_stack_destroy(zend_ptr_stack *stack);
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ZEND_API void zend_ptr_stack_apply(zend_ptr_stack *stack, void (*func)(void *));
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ZEND_API void zend_ptr_stack_clean(zend_ptr_stack *stack, void (*func)(void *), zend_bool free_elements);
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ZEND_API int zend_ptr_stack_num_elements(zend_ptr_stack *stack);
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static inline void zend_ptr_stack_push(zend_ptr_stack *stack, void *ptr)
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{
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if (stack->top >= stack->max) { /* we need to allocate more memory */
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stack->elements = (void **) erealloc(stack->elements, (sizeof(void *) * (stack->max *= 2 )));
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stack->top_element = stack->elements+stack->top;
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}
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stack->top++;
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*(stack->top_element++) = ptr;
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}
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static inline void *zend_ptr_stack_pop(zend_ptr_stack *stack)
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{
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stack->top--;
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return *(--stack->top_element);
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}
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#endif /* ZEND_PTR_STACK_H */
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