/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/*

 *********************************************************************

 *

 * Memory-mapped files

 *

 *********************************************************************

 */

#include "primpl.h"

PR_IMPLEMENT(PRFileMap*)

PR_CreateFileMap(PRFileDesc* fd, PRInt64 size, PRFileMapProtect prot) {

  PRFileMap* fmap;

  PR_ASSERT(prot == PR_PROT_READONLY || prot == PR_PROT_READWRITE ||

            prot == PR_PROT_WRITECOPY);

  fmap = PR_NEWZAP(PRFileMap);

  if (NULL == fmap) {

    PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);

    return NULL;

  }

  fmap->fd = fd;

  fmap->prot = prot;

  if (_PR_MD_CREATE_FILE_MAP(fmap, size) == PR_SUCCESS) {

    return fmap;

  }

  PR_DELETE(fmap);

  return NULL;

}

PR_IMPLEMENT(PRInt32) PR_GetMemMapAlignment(void) {

  return _PR_MD_GET_MEM_MAP_ALIGNMENT();

}

PR_IMPLEMENT(void*)

PR_MemMap(PRFileMap* fmap, PROffset64 offset, PRUint32 len) {

  return _PR_MD_MEM_MAP(fmap, offset, len);

}

PR_IMPLEMENT(PRStatus) PR_MemUnmap(void* addr, PRUint32 len) {

  return _PR_MD_MEM_UNMAP(addr, len);

}

PR_IMPLEMENT(PRStatus) PR_CloseFileMap(PRFileMap* fmap) {

  return _PR_MD_CLOSE_FILE_MAP(fmap);

}

PR_IMPLEMENT(PRStatus) PR_SyncMemMap(PRFileDesc* fd, void* addr, PRUint32 len) {

  return _PR_MD_SYNC_MEM_MAP(fd, addr, len);

}