/* 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);
}