nsprpub/pr/src/threads/prdump.c

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "primpl.h"
   7
   8 #if defined(WIN95)
   9 /*
  10 ** Some local variables report warnings on Win95 because the code paths
  11 ** using them are conditioned on HAVE_CUSTOME_USER_THREADS.
  12 ** The pragma suppresses the warning.
  13 **
  14 */
  15 #  pragma warning(disable : 4101)
  16 #endif
  17
  18 /* XXX use unbuffered nspr stdio */
  19
  20 PRFileDesc* _pr_dumpOut;
  21
  22 PRUint32 _PR_DumpPrintf(PRFileDesc* fd, const char* fmt, ...) {
  23   char buf[100];
  24   PRUint32 nb;
  25   va_list ap;
  26
  27   va_start(ap, fmt);
  28   nb = PR_vsnprintf(buf, sizeof(buf), fmt, ap);
  29   va_end(ap);
  30   PR_Write(fd, buf, nb);
  31
  32   return nb;
  33 }
  34
  35 void _PR_DumpThread(PRFileDesc* fd, PRThread* thread) {
  36 #ifndef _PR_GLOBAL_THREADS_ONLY
  37   _PR_DumpPrintf(fd, "%05d[%08p] pri=%2d flags=0x%02x", thread->id, thread,
  38                  thread->priority, thread->flags);
  39   switch (thread->state) {
  40     case _PR_RUNNABLE:
  41     case _PR_RUNNING:
  42       break;
  43     case _PR_LOCK_WAIT:
  44       _PR_DumpPrintf(fd, " lock=%p", thread->wait.lock);
  45       break;
  46     case _PR_COND_WAIT:
  47       _PR_DumpPrintf(fd, " condvar=%p sleep=%lldms", thread->wait.cvar,
  48                      thread->sleep);
  49       break;
  50     case _PR_SUSPENDED:
  51       _PR_DumpPrintf(fd, " suspended");
  52       break;
  53   }
  54   PR_Write(fd, "\n", 1);
  55 #endif
  56
  57   /* Now call dump routine */
  58   if (thread->dump) {
  59     thread->dump(fd, thread, thread->dumpArg);
  60   }
  61 }
  62
  63 static void DumpThreadQueue(PRFileDesc* fd, PRCList* list) {
  64 #ifndef _PR_GLOBAL_THREADS_ONLY
  65   PRCList* q;
  66
  67   q = list->next;
  68   while (q != list) {
  69     PRThread* t = _PR_THREAD_PTR(q);
  70     _PR_DumpThread(fd, t);
  71     q = q->next;
  72   }
  73 #endif
  74 }
  75
  76 void _PR_DumpThreads(PRFileDesc* fd) {
  77   PRThread* t;
  78   PRIntn i;
  79
  80   _PR_DumpPrintf(fd, "Current Thread:\n");
  81   t = _PR_MD_CURRENT_THREAD();
  82   _PR_DumpThread(fd, t);
  83
  84   _PR_DumpPrintf(fd, "Runnable Threads:\n");
  85   for (i = 0; i < PR_ARRAY_SIZE(_PR_RUNQ(t->cpu)); i++) {
  86     DumpThreadQueue(fd, &_PR_RUNQ(t->cpu)[i]);
  87   }
  88
  89   _PR_DumpPrintf(fd, "CondVar timed wait Threads:\n");
  90   DumpThreadQueue(fd, &_PR_SLEEPQ(t->cpu));
  91
  92   _PR_DumpPrintf(fd, "CondVar wait Threads:\n");
  93   DumpThreadQueue(fd, &_PR_PAUSEQ(t->cpu));
  94
  95   _PR_DumpPrintf(fd, "Suspended Threads:\n");
  96   DumpThreadQueue(fd, &_PR_SUSPENDQ(t->cpu));
  97 }
  98
  99 PR_IMPLEMENT(void) PR_ShowStatus(void) {
 100   PRIntn is;
 101
 102   if (_PR_MD_CURRENT_THREAD() &&
 103       !_PR_IS_NATIVE_THREAD(_PR_MD_CURRENT_THREAD())) {
 104     _PR_INTSOFF(is);
 105   }
 106   _pr_dumpOut = _pr_stderr;
 107   _PR_DumpThreads(_pr_dumpOut);
 108   if (_PR_MD_CURRENT_THREAD() &&
 109       !_PR_IS_NATIVE_THREAD(_PR_MD_CURRENT_THREAD())) {
 110     _PR_FAST_INTSON(is);
 111   }
 112 }
 113
 114 PR_IMPLEMENT(void)
 115 PR_SetThreadDumpProc(PRThread* thread, PRThreadDumpProc dump, void* arg) {
 116   thread->dump = dump;
 117   thread->dumpArg = arg;
 118 }