malloc.c

来自「MPI stands for the Message Passing Inter」· C语言 代码 · 共 180 行

/*
 * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
 *                         University Research and Technology
 *                         Corporation.  All rights reserved.
 * Copyright (c) 2004-2005 The University of Tennessee and The University
 *                         of Tennessee Research Foundation.  All rights
 *                         reserved.
 * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart, 
 *                         University of Stuttgart.  All rights reserved.
 * Copyright (c) 2004-2005 The Regents of the University of California.
 *                         All rights reserved.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */

#include "opal_config.h"

#include <stdlib.h>

#include "opal/util/malloc.h"
#include "opal/util/output.h"


/*
 * Undefine "malloc" and "free"
 */

#if defined(malloc)
#undef malloc
#endif
#if defined(calloc)
#undef calloc
#endif
#if defined(free)
#undef free
#endif
#if defined(realloc)
#undef realloc
#endif

/*
 * Public variables
 */
int opal_malloc_debug_level = OPAL_MALLOC_DEBUG_LEVEL;
int opal_malloc_output = -1;


/*
 * Private variables
 */
static opal_output_stream_t malloc_stream;


/*
 * Initialize the malloc debug interface
 */
void opal_malloc_init(void)
{
    OBJ_CONSTRUCT(&malloc_stream, opal_output_stream_t);
    malloc_stream.lds_is_debugging = true;
    malloc_stream.lds_verbose_level = 5;
    malloc_stream.lds_prefix = "malloc debug: ";
    malloc_stream.lds_want_stderr = true;
    opal_malloc_output = opal_output_open(&malloc_stream);
}


/*
 * Finalize the malloc debug interface
 */
void opal_malloc_finalize(void)
{
  if (-1 != opal_malloc_output) {
    opal_output_close(opal_malloc_output);
    opal_malloc_output = -1;
    OBJ_DESTRUCT(&malloc_stream);
  }
}


/*
 * Debug version of malloc
 */
void *opal_malloc(size_t size, const char *file, int line)
{
    void *addr;
    if (opal_malloc_debug_level > 1) {
        if (size <= 0) {
          opal_output(opal_malloc_output, "Request for %ld bytes (%s, %d)", 
                     (long) size, file, line);
        }
    }
    addr = malloc(size);
    if (opal_malloc_debug_level > 0) {
        if (NULL == addr) {
            opal_output(opal_malloc_output, 
                       "Request for %ld bytes failed (%s, %d)",
                       (long) size, file, line);
        }
    }

    return addr;
}


/*
 * Debug version of calloc
 */
void *opal_calloc(size_t nmembers, size_t size, const char *file, int line)
{
    void *addr;
    if (opal_malloc_debug_level > 1) {
        if (size <= 0) {
          opal_output(opal_malloc_output,
                     "Request for %ld zeroed elements of size %ld (%s, %d)", 
                     (long) nmembers, (long) size, file, line);
        }
    }
    addr = calloc(nmembers, size);
    if (opal_malloc_debug_level > 0) {
        if (NULL == addr) {
            opal_output(opal_malloc_output, 
                       "Request for %ld zeroed elements of size %ld failed (%s, %d)",
                       (long) nmembers, (long) size, file, line);
        }
    }

    return addr;
}


/*
 * Debug version of realloc
 */
void *opal_realloc(void *ptr, size_t size, const char *file, int line)
{
    void *addr;

    if (opal_malloc_debug_level > 1) {
        if (size <= 0) {
          if (NULL == ptr) {
            opal_output(opal_malloc_output, 
                       "Realloc NULL for %ld bytes (%s, %d)", 
                       (long) size, file, line);
          } else {
            opal_output(opal_malloc_output, "Realloc %p for %ld bytes (%s, %d)", 
                       ptr, (long) size, file, line);
          }
        }
    }
    addr = realloc(ptr, size);
    if (opal_malloc_debug_level > 0) {
        if (NULL == addr) {
            opal_output(opal_malloc_output, 
                       "Realloc %p for %ld bytes failed (%s, %d)",
                       ptr, (long) size, file, line);
        }
    }

    return addr;
}


/*
 * Debug version of free
 */
void opal_free(void *addr, const char *file, int line)
{
    if (opal_malloc_debug_level > 1 && NULL == addr) {
      opal_output(opal_malloc_output, "Invalid free (%s, %d)", file, line);
    } else {
      free(addr);
    }
}