C++ (Cpp) FOREACH_LIBPTHREAD_WRAPPERS Examples

Example #1

File: syscallsreal.c Project: ningke/dmtcp

/*
 * WARNING: By using this method to initialize libpthread wrappers (direct
 * dlopen()/dlsym()) we are are overriding any user wrappers for these
 * functions. If this is a problem in the future we need to think of a new way
 * to do this.
 */
LIB_PRIVATE
void initialize_libpthread_wrappers()
{
  if (!_libpthread_wrappers_initialized) {
    FOREACH_LIBPTHREAD_WRAPPERS(GET_LIBPTHREAD_FUNC_ADDR);
    _libpthread_wrappers_initialized = 1;
  }
}

Example #2

File: syscallsreal.c Project: karya0/dmtcp

/*
 * WARNING: By using this method to initialize libpthread wrappers (direct
 * dlopen()/dlsym()) we are are overriding any user wrappers for these
 * functions. If this is a problem in the future we need to think of a new way
 * to do this.
 * EDIT: On some ARM machines, the symbol version is 2.4. Try that first and
 *       fallback to 2.3.4 on failure.
 */
static void
initialize_libpthread_wrappers()
{
  const char *ver_2_4 = "GLIBC_2.4";
  const char *ver_2_3_2 = "GLIBC_2.3.2";
  const char *pthread_sym_ver = NULL;

  void *addr = dmtcp_dlvsym(RTLD_NEXT, "pthread_cond_signal", (char*)ver_2_4);
  if (addr != NULL) {
    pthread_sym_ver = ver_2_4;
  } else {
    pthread_sym_ver = ver_2_3_2;
  }

  FOREACH_LIBPTHREAD_WRAPPERS(GET_LIBPTHREAD_FUNC_ADDR);
}

Example #3

File: syscallsreal.c Project: jimenez/dmtcp

/*
 * WARNING: By using this method to initialize libpthread wrappers (direct
 * dlopen()/dlsym()) we are are overriding any user wrappers for these
 * functions. If this is a problem in the future we need to think of a new way
 * to do this.
 * EDIT: On some ARM machines, the symbol version is 2.4. Try that first and
 *       fallback to 2.3.4 on failure.
 */
LIB_PRIVATE
void initialize_libpthread_wrappers()
{
  if (!_libpthread_wrappers_initialized) {
    const char *ver_2_4 = "GLIBC_2.4";
    const char *ver_2_3_2 = "GLIBC_2.3.2";
    const char *pthread_sym_ver = NULL;

    void *addr = dlvsym(RTLD_NEXT, "pthread_cond_signal", ver_2_4);
    if (addr != NULL) {
      pthread_sym_ver = ver_2_4;
    } else {
      pthread_sym_ver = ver_2_3_2;
    }

    FOREACH_LIBPTHREAD_WRAPPERS(GET_LIBPTHREAD_FUNC_ADDR);
    _libpthread_wrappers_initialized = 1;
  }
}

Example #4

File: syscallsreal.c Project: kito-cheng/dmtcp-android

/*
 * WARNING: By using this method to initialize libpthread wrappers (direct
 * dlopen()/dlsym()) we are are overriding any user wrappers for these
 * functions. If this is a problem in the future we need to think of a new way
 * to do this.
 */
LIB_PRIVATE
void initialize_libpthread_wrappers()
{
  if (!_libpthread_wrappers_initialized) {
    dmtcp_setThreadPerformingDlopenDlsym();
    void *pthread_handle = _real_dlopen(LIBPTHREAD_FILENAME, RTLD_NOW);
    dmtcp_unsetThreadPerformingDlopenDlsym();

    if (pthread_handle == NULL) {
      fprintf(stderr, "*** DMTCP: Error: could not open libpthread shared "
                      "library. Aborting.\n");
      abort();
    }
    FOREACH_LIBPTHREAD_WRAPPERS(GET_LIBPTHREAD_FUNC_ADDR);
    _real_dlclose(pthread_handle);

    _libpthread_wrappers_initialized = 1;
  }
}