ndbmem.c

来自「MySQL源码文件5.X系列, 可自已编译到服务器」· C语言 代码 · 共 83 行

/* Copyright (C) 2003 MySQL AB

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */


#include <ndb_global.h>

#include <NdbMem.h>

void NdbMem_Create()
{
  /* Do nothing */
  return;
}

void NdbMem_Destroy()
{
  /* Do nothing */
  return;
}


void* NdbMem_Allocate(size_t size)
{
  void* mem_allocated;
  assert(size > 0);
  mem_allocated= (void*)malloc(size);
  return mem_allocated;
}

void* NdbMem_AllocateAlign(size_t size, size_t alignment)
{
  (void)alignment; /* remove warning for unused parameter */
  /*
    return (void*)memalign(alignment, size);
    TEMP fix
  */
  return (void*)malloc(size);
}


void NdbMem_Free(void* ptr)
{
  free(ptr);
}

 
int NdbMem_MemLockAll(int i){
  if (i == 1)
  {
#if defined(HAVE_MLOCKALL) && defined(MCL_CURRENT) && defined (MCL_FUTURE)
    return mlockall(MCL_CURRENT | MCL_FUTURE);
#else
    return -1;
#endif
  }
#if defined(HAVE_MLOCKALL) && defined(MCL_CURRENT)
  return mlockall(MCL_CURRENT);
#else
  return -1;
#endif
}

int NdbMem_MemUnlockAll(){
#if defined(HAVE_MLOCKALL) && defined(MCL_CURRENT)
  return munlockall();
#else
  return -1;
#endif
}