1                 : /*
       2                 :    +----------------------------------------------------------------------+
       3                 :    | Zend Engine                                                          |
       4                 :    +----------------------------------------------------------------------+
       5                 :    | Copyright (c) 1998-2009 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: Andi Gutmans <andi@zend.com>                                |
      16                 :    |          Zeev Suraski <zeev@zend.com>                                |
      17                 :    +----------------------------------------------------------------------+
      18                 : */
      19                 : 
      20                 : /* $Id: zend_ptr_stack.c 272367 2008-12-31 11:12:40Z sebastian $ */
      21                 : 
      22                 : #include "zend.h"
      23                 : #include "zend_ptr_stack.h"
      24                 : #ifdef HAVE_STDARG_H
      25                 : # include <stdarg.h>
      26                 : #endif
      27                 : 
      28                 : ZEND_API void zend_ptr_stack_init_ex(zend_ptr_stack *stack, zend_bool persistent) /* {{{ */
      29           67983 : {
      30           67983 :         stack->top_element = stack->elements = (void **) pemalloc(sizeof(void *)*PTR_STACK_BLOCK_SIZE, persistent);
      31           67983 :         stack->max = PTR_STACK_BLOCK_SIZE;
      32           67983 :         stack->top = 0;
      33           67983 :         stack->persistent = persistent;
      34           67983 : }
      35                 : /* }}} */
      36                 : 
      37                 : ZEND_API void zend_ptr_stack_init(zend_ptr_stack *stack) /* {{{ */
      38           67972 : {
      39           67972 :         zend_ptr_stack_init_ex(stack, 0);
      40           67972 : }
      41                 : /* }}} */
      42                 : 
      43                 : ZEND_API void zend_ptr_stack_n_push(zend_ptr_stack *stack, int count, ...) /* {{{ */
      44               0 : {
      45                 :         va_list ptr;
      46                 :         void *elem;
      47                 : 
      48               0 :         ZEND_PTR_STACK_RESIZE_IF_NEEDED(stack, count)
      49                 : 
      50               0 :         va_start(ptr, count);
      51               0 :         while (count>0) {
      52               0 :                 elem = va_arg(ptr, void *);
      53               0 :                 stack->top++;
      54               0 :                 *(stack->top_element++) = elem;
      55               0 :                 count--;
      56                 :         }
      57               0 :         va_end(ptr);
      58               0 : }
      59                 : /* }}} */
      60                 : 
      61                 : ZEND_API void zend_ptr_stack_n_pop(zend_ptr_stack *stack, int count, ...) /* {{{ */
      62               0 : {
      63                 :         va_list ptr;
      64                 :         void **elem;
      65                 : 
      66               0 :         va_start(ptr, count);
      67               0 :         while (count>0) {
      68               0 :                 elem = va_arg(ptr, void **);
      69               0 :                 *elem = *(--stack->top_element);
      70               0 :                 stack->top--;
      71               0 :                 count--;
      72                 :         }
      73               0 :         va_end(ptr);
      74               0 : }
      75                 : /* }}} */
      76                 : 
      77                 : ZEND_API void zend_ptr_stack_destroy(zend_ptr_stack *stack) /* {{{ */
      78           68111 : {
      79           68111 :         if (stack->elements) {
      80           68111 :                 pefree(stack->elements, stack->persistent);
      81                 :         }
      82           68111 : }
      83                 : /* }}} */
      84                 : 
      85                 : ZEND_API void zend_ptr_stack_apply(zend_ptr_stack *stack, void (*func)(void *)) /* {{{ */
      86           51097 : {
      87           51097 :         int i = stack->top;
      88                 : 
      89          102266 :         while (--i >= 0) {
      90              72 :                 func(stack->elements[i]);
      91                 :         }
      92           51097 : }
      93                 : /* }}} */
      94                 : 
      95                 : ZEND_API void zend_ptr_stack_clean(zend_ptr_stack *stack, void (*func)(void *), zend_bool free_elements) /* {{{ */
      96           51086 : {
      97           51086 :         zend_ptr_stack_apply(stack, func);
      98           51086 :         if (free_elements) {
      99           51075 :                 int i = stack->top;
     100                 : 
     101          102154 :                 while (--i >= 0) {
     102               4 :                         pefree(stack->elements[i], stack->persistent);
     103                 :                 }
     104                 :         }
     105           51086 :         stack->top = 0;
     106           51086 :         stack->top_element = stack->elements;
     107           51086 : }
     108                 : /* }}} */
     109                 : 
     110                 : ZEND_API int zend_ptr_stack_num_elements(zend_ptr_stack *stack) /* {{{ */
     111              74 : {
     112              74 :         return stack->top;
     113                 : }
     114                 : /* }}} */
     115                 : 
     116                 : /*
     117                 :  * Local variables:
     118                 :  * tab-width: 4
     119                 :  * c-basic-offset: 4
     120                 :  * indent-tabs-mode: t
     121                 :  * End:
     122                 :  */