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      1 /* Copyright (c) 2005-2007, Google Inc.
      2  * All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  *
     30  * ---
     31  * Author: Markus Gutschke
     32  */
     33 
     34 #include "config.h"
     35 #include <stdio.h>         /* needed for NULL on some powerpc platforms (?!) */
     36 #ifdef HAVE_SYS_PRCTL
     37 # include <sys/prctl.h>
     38 #endif
     39 #include "base/thread_lister.h"
     40 #include "base/linuxthreads.h"
     41 /* Include other thread listers here that define THREADS macro
     42  * only when they can provide a good implementation.
     43  */
     44 
     45 #ifndef THREADS
     46 
     47 /* Default trivial thread lister for single-threaded applications,
     48  * or if the multi-threading code has not been ported, yet.
     49  */
     50 
     51 int ListAllProcessThreads(void *parameter,
     52                           ListAllProcessThreadsCallBack callback, ...) {
     53   int rc;
     54   va_list ap;
     55   pid_t pid;
     56 
     57 #ifdef HAVE_SYS_PRCTL
     58   int dumpable = prctl(PR_GET_DUMPABLE, 0);
     59   if (!dumpable)
     60     prctl(PR_SET_DUMPABLE, 1);
     61 #endif
     62   va_start(ap, callback);
     63   pid = getpid();
     64   rc = callback(parameter, 1, &pid, ap);
     65   va_end(ap);
     66 #ifdef HAVE_SYS_PRCTL
     67   if (!dumpable)
     68     prctl(PR_SET_DUMPABLE, 0);
     69 #endif
     70   return rc;
     71 }
     72 
     73 int ResumeAllProcessThreads(int num_threads, pid_t *thread_pids) {
     74   return 1;
     75 }
     76 
     77 #endif   /* ifndef THREADS */
     78