nsresult
nsTransactionManager::Unlock()
{
  if (mMonitor)
    PR_ExitMonitor(mMonitor);

  return NS_OK;
}

void
Monitor::Exit()
{
    if (0 == --mEntryCount)
        Release();              // protected by mMonitor
    PRStatus status = PR_ExitMonitor(mMonitor);
    NS_ASSERTION(PR_SUCCESS == status, "bad Monitor::Exit()");
}

static void T1Mon(void)
{
    PRStatus rv;
    PRThread *t2, *t3;

    PR_fprintf(err, "\n**********************************\n");
    PR_fprintf(err, "            MONITORS\n");
    PR_fprintf(err, "**********************************\n");

    sharedM.o1 = PR_NewMonitor();
    sharedM.o2 = PR_NewMonitor();

    base =  PR_IntervalNow();

    PR_EnterMonitor(sharedM.o1);
    LogNow("T1 waiting 3 seconds on o1", PR_SUCCESS);
    rv = PR_Wait(sharedM.o1, PR_SecondsToInterval(3));
    if (PR_SUCCESS == rv) LogNow("T1 resuming on o1", rv);
    else LogNow("T1 wait on o1 failed", rv);
    PR_ExitMonitor(sharedM.o1);

    LogNow("T1 creating T2", PR_SUCCESS);
    t2 = PR_CreateThread(
        PR_USER_THREAD, T2Mon, &sharedM, PR_PRIORITY_NORMAL,
        PR_LOCAL_THREAD, PR_JOINABLE_THREAD, 0);

    LogNow("T1 creating T3", PR_SUCCESS);
    t3 = PR_CreateThread(
        PR_USER_THREAD, T3Mon, &sharedM, PR_PRIORITY_NORMAL,
        PR_LOCAL_THREAD, PR_JOINABLE_THREAD, 0);

    PR_EnterMonitor(sharedM.o2);
    LogNow("T1 waiting forever on o2", PR_SUCCESS);
    rv = PR_Wait(sharedM.o2, PR_INTERVAL_NO_TIMEOUT);
    if (PR_SUCCESS == rv) LogNow("T1 resuming on o2", rv);
    else LogNow("T1 wait on o2 failed", rv);
    PR_ExitMonitor(sharedM.o2);

    (void)PR_JoinThread(t2);
    (void)PR_JoinThread(t3);

    PR_DestroyMonitor(sharedM.o1);
    PR_DestroyMonitor(sharedM.o2);

}  /* T1Mon */

NS_IMETHODIMP nsIMAPHostSessionList::SetHaveWeEverDiscoveredFoldersForHost(const char *serverKey, bool discovered)
{
  PR_EnterMonitor(gCachedHostInfoMonitor);
  nsIMAPHostInfo *host = FindHost(serverKey);
  if (host)
    host->fHaveWeEverDiscoveredFolders = discovered;
  PR_ExitMonitor(gCachedHostInfoMonitor);
  return (host == NULL) ? NS_ERROR_ILLEGAL_VALUE : NS_OK;
}

void
ReentrantMonitor::Exit()
{
  if (--mEntryCount == 0) {
    Release();              // protected by mReentrantMonitor
  }
  PRStatus status = PR_ExitMonitor(mReentrantMonitor);
  NS_ASSERTION(PR_SUCCESS == status, "bad ReentrantMonitor::Exit()");
}

NS_IMETHODIMP nsIMAPHostSessionList::GetPasswordForHost(const char *serverKey, nsString &result)
{
  PR_EnterMonitor(gCachedHostInfoMonitor);
  nsIMAPHostInfo *host = FindHost(serverKey);
  if (host)
    result.AssignWithConversion(host->fCachedPassword);
  PR_ExitMonitor(gCachedHostInfoMonitor);
  return (host == NULL) ? NS_ERROR_ILLEGAL_VALUE : NS_OK;
}

static void WaitMonitorThread(void *arg)
{
    PRIntervalTime timeout = (PRIntervalTime) arg;
    PRIntervalTime elapsed;
#if defined(XP_UNIX) || defined(WIN32)
    PRInt32 timeout_msecs = PR_IntervalToMilliseconds(timeout);
    PRInt32 elapsed_msecs;
#endif
#if defined(XP_UNIX)
    struct timeval end_time_tv;
#endif
#if defined(WIN32) && !defined(WINCE)
    struct _timeb end_time_tb;
#endif
    PRMonitor *mon;

    mon = PR_NewMonitor();
    if (mon == NULL) {
        fprintf(stderr, "PR_NewMonitor failed\n");
        exit(1);
    }
    PR_EnterMonitor(mon);
    PR_Wait(mon, timeout);
    PR_ExitMonitor(mon);
    elapsed = (PRIntervalTime)(PR_IntervalNow() - start_time);
    if (elapsed + tolerance < timeout || elapsed > timeout + tolerance) {
        fprintf(stderr, "timeout wrong\n");
        exit(1);
    }
#if defined(XP_UNIX)
    gettimeofday(&end_time_tv, NULL);
    elapsed_msecs = 1000*(end_time_tv.tv_sec - start_time_tv.tv_sec)
            + (end_time_tv.tv_usec - start_time_tv.tv_usec)/1000;
#endif
#if defined(WIN32)
#if defined(WINCE)
    elapsed_msecs = GetTickCount() - start_time_tick;
#else
    _ftime(&end_time_tb);
    elapsed_msecs = 1000*(end_time_tb.time - start_time_tb.time)
            + (end_time_tb.millitm - start_time_tb.millitm);
#endif
#endif
#if defined(XP_UNIX) || defined(WIN32)
    if (elapsed_msecs + tolerance_msecs < timeout_msecs
            || elapsed_msecs > timeout_msecs + tolerance_msecs) {
        fprintf(stderr, "timeout wrong\n");
        exit(1);
    }
#endif
    PR_DestroyMonitor(mon);
    if (debug_mode) {
        fprintf(stderr, "wait monitor thread (scope %d) done\n",
                PR_GetThreadScope(PR_GetCurrentThread()));
    }
}

void aptCoreTrace::Log(eLogLevel eLevel, const char* fmt, ...)
{
    static const int nEOL = 2;
    if (!mCanLog) return;

    if (eLevel < mCoreLogLevel) return;
    
	PRTime curTime = PR_Now();
	PRExplodedTime localTime;
	PR_ExplodeTime(curTime, PR_LocalTimeParameters, &localTime);

	PR_EnterMonitor(mLoggerLock);

    PRUint32 nWritten = PR_snprintf(mBuf, mBufSize-nEOL,
			"%02d:%02d:%02d %02d/%02d/%04d [%6d] [%s] ", // XXX i18n!
			localTime.tm_hour, localTime.tm_min, localTime.tm_sec,
			localTime.tm_month+1, localTime.tm_mday, localTime.tm_year,
			mPid, gsLogLevel[eLevel]);


    va_list arg_ptr;
    va_start(arg_ptr, fmt);
    PRUint32 nExtra = PR_vsnprintf(mBuf+nWritten, mBufSize-nWritten-nEOL, fmt, arg_ptr);
    va_end(arg_ptr);

    if (nExtra == (PRUint32) (-1))
    {
        //failed?
        PR_ExitMonitor(mLoggerLock);
        return;
    }


    nWritten += nExtra;

#ifdef _WIN32
    mBuf[nWritten++] = '\r';
#endif
    mBuf[nWritten++] = '\n';
    
    mLC->WriteLog(mBuf, nWritten);
    PR_ExitMonitor(mLoggerLock);
}

static void PR_CALLBACK TryEntry(void *arg)
{
    PRMonitor *ml = (PRMonitor*)arg;
    if (debug_mode) PR_fprintf(std_err, "Reentrant thread created\n");
    PR_EnterMonitor(ml);
    PR_ASSERT_CURRENT_THREAD_IN_MONITOR(ml);
    if (debug_mode) PR_fprintf(std_err, "Reentrant thread acquired monitor\n");
    PR_ExitMonitor(ml);
    if (debug_mode) PR_fprintf(std_err, "Reentrant thread released monitor\n");
}  /* TryEntry */

JSJ_DetachCurrentThreadFromJava(JSJavaThreadState *jsj_env)
{
    SystemJavaVM *java_vm;
    JNIEnv* jEnv;
    JSJavaThreadState *e, **p;

    /* Disassociate the current native thread from its corresponding Java thread */
    java_vm = jsj_env->jsjava_vm->java_vm;
    jEnv = jsj_env->jEnv;

#ifdef JSJ_THREADSAFE
    PR_EnterMonitor(thread_list_monitor);
#endif	/* JSJ_THREADSAFE */

    if (!JSJ_callbacks->detach_current_thread(java_vm, jEnv)) {

#ifdef JSJ_THREADSAFE
        PR_ExitMonitor(thread_list_monitor);
#endif	/* JSJ_THREADSAFE */

        return JS_FALSE;
    }

    /* Destroy the LiveConnect execution environment passed in */
    jsj_ClearPendingJSErrors(jsj_env);

    for (p = &thread_list; (e = *p) != NULL; p = &(e->next)) {
        if (e == jsj_env) {
            *p = jsj_env->next;
            break;
        }
    }

    JS_ASSERT(e);

#ifdef JSJ_THREADSAFE
    PR_ExitMonitor(thread_list_monitor);
#endif	/* JSJ_THREADSAFE */

    free(jsj_env);
    return JS_TRUE;
}