Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #include "primpl.h"
       7             : 
       8             : #if defined(_PR_PTHREADS)
       9             : 
      10             : /*
      11             : ** The pthreads version doesn't use these functions.
      12             : */
      13           3 : void _PR_InitSegs(void)
      14             : {
      15           3 : }
      16             : 
      17             : #else /* _PR_PTHREADS */
      18             : 
      19             : void _PR_InitSegs(void)
      20             : {
      21             :         _PR_MD_INIT_SEGS();
      22             : }
      23             : 
      24             : /*
      25             : ** Allocate a memory segment. The size value is rounded up to the native
      26             : ** system page size and a page aligned portion of memory is returned.
      27             : ** This memory is not part of the malloc heap. If "vaddr" is not NULL
      28             : ** then PR tries to allocate the segment at the desired virtual address.
      29             : */
      30             : PRSegment* _PR_NewSegment(PRUint32 size, void *vaddr)
      31             : {
      32             :     PRSegment *seg;
      33             : 
      34             :         /* calloc the data structure for the segment */
      35             :     seg = PR_NEWZAP(PRSegment);
      36             : 
      37             :     if (seg) {
      38             :             size = ((size + _pr_pageSize - 1) >> _pr_pageShift) << _pr_pageShift;
      39             :                 /*
      40             :                 **      Now, allocate the actual segment memory (or map under some OS)
      41             :                 **      The OS specific code decides from where or how to allocate memory.
      42             :                 */
      43             :             if (_PR_MD_ALLOC_SEGMENT(seg, size, vaddr) != PR_SUCCESS) {
      44             :                         PR_DELETE(seg);
      45             :                         return NULL;
      46             :         }
      47             :         }
      48             : 
      49             :     return seg;
      50             : }
      51             : 
      52             : /*
      53             : ** Free a memory segment.
      54             : */
      55             : void _PR_DestroySegment(PRSegment *seg)
      56             : {
      57             :         _PR_MD_FREE_SEGMENT(seg);
      58             :     PR_DELETE(seg);
      59             : }
      60             : 
      61             : #endif /* _PR_PTHREADS */