LCOV - code coverage report
Current view: directory - storage/test - test_deadlock_detector.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 274 174 63.5 %
Date: 2012-06-02 Functions: 25 19 76.0 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2                 :  * vim: sw=4 ts=4 et :
       3                 :  * ***** BEGIN LICENSE BLOCK *****
       4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       5                 :  *
       6                 :  * The contents of this file are subject to the Mozilla Public License Version
       7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       8                 :  * the License. You may obtain a copy of the License at
       9                 :  * http://www.mozilla.org/MPL/
      10                 :  *
      11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      13                 :  * for the specific language governing rights and limitations under the
      14                 :  * License.
      15                 :  *
      16                 :  * The Original Code is mozilla.org code.
      17                 :  *
      18                 :  * The Initial Developer of the Original Code is
      19                 :  * Mozilla Corporation.
      20                 :  * Portions created by the Initial Developer are Copyright (C) 2009
      21                 :  * the Initial Developer. All Rights Reserved.
      22                 :  *
      23                 :  * Contributor(s):
      24                 :  *   Chris Jones <jones.chris.g@gmail.com>
      25                 :  *
      26                 :  * Alternatively, the contents of this file may be used under the terms of
      27                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      28                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      29                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      30                 :  * of those above. If you wish to allow use of your version of this file only
      31                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      32                 :  * use your version of this file under the terms of the MPL, indicate your
      33                 :  * decision by deleting the provisions above and replace them with the notice
      34                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      35                 :  * the provisions above, a recipient may use your version of this file under
      36                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      37                 :  *
      38                 :  * ***** END LICENSE BLOCK ***** */
      39                 : 
      40                 : /**
      41                 :  * Note: This file is a copy of xpcom/tests/TestDeadlockDetector.cpp, but all
      42                 :  *       mutexes were turned into SQLiteMutexes.
      43                 :  */
      44                 : 
      45                 : #include "prenv.h"
      46                 : #include "prerror.h"
      47                 : #include "prio.h"
      48                 : #include "prproces.h"
      49                 : 
      50                 : #include "nsMemory.h"
      51                 : 
      52                 : #include "mozilla/CondVar.h"
      53                 : #include "mozilla/ReentrantMonitor.h"
      54                 : #include "SQLiteMutex.h"
      55                 : 
      56                 : #include "TestHarness.h"
      57                 : 
      58                 : using namespace mozilla;
      59                 : 
      60                 : /**
      61                 :  * Helper class to allocate a sqlite3_mutex for our SQLiteMutex.  Also makes
      62                 :  * keeping the test files in sync easier.
      63                 :  */
      64                 : class TestMutex : public mozilla::storage::SQLiteMutex
      65                 : {
      66                 : public:
      67               4 :     TestMutex(const char* aName)
      68                 :     : mozilla::storage::SQLiteMutex(aName)
      69               4 :     , mInner(sqlite3_mutex_alloc(SQLITE_MUTEX_FAST))
      70                 :     {
      71               4 :         NS_ASSERTION(mInner, "could not allocate a sqlite3_mutex");
      72               4 :         initWithMutex(mInner);
      73               4 :     }
      74                 : 
      75               4 :     ~TestMutex()
      76               4 :     {
      77               4 :         sqlite3_mutex_free(mInner);
      78               4 :     }
      79                 : 
      80          899925 :     void Lock()
      81                 :     {
      82          899925 :         lock();
      83          899909 :     }
      84                 : 
      85          900000 :     void Unlock()
      86                 :     {
      87          900000 :         unlock();
      88          900000 :     }
      89                 : private:
      90                 :   sqlite3_mutex *mInner;
      91                 : };
      92                 : 
      93                 : static PRThread*
      94               3 : spawn(void (*run)(void*), void* arg)
      95                 : {
      96                 :     return PR_CreateThread(PR_SYSTEM_THREAD,
      97                 :                            run,
      98                 :                            arg,
      99                 :                            PR_PRIORITY_NORMAL,
     100                 :                            PR_GLOBAL_THREAD,
     101                 :                            PR_JOINABLE_THREAD,
     102               3 :                            0);
     103                 : }
     104                 : 
     105                 : #define PASS()                                  \
     106                 :     do {                                        \
     107                 :         passed(__FUNCTION__);                   \
     108                 :         return NS_OK;                           \
     109                 :     } while (0)
     110                 : 
     111                 : #define FAIL(why)                               \
     112                 :     do {                                        \
     113                 :         fail("%s | %s - %s", __FILE__, __FUNCTION__, why); \
     114                 :         return NS_ERROR_FAILURE;                \
     115                 :     } while (0)
     116                 : 
     117                 : //-----------------------------------------------------------------------------
     118                 : 
     119                 : static const char* sPathToThisBinary;
     120                 : static const char* sAssertBehaviorEnv = "XPCOM_DEBUG_BREAK=abort";
     121                 : 
     122                 : class Subprocess
     123               6 : {
     124                 : public:
     125                 :     // not available until process finishes
     126                 :     PRInt32 mExitCode;
     127                 :     nsCString mStdout;
     128                 :     nsCString mStderr;
     129                 : 
     130               6 :     Subprocess(const char* aTestName) {
     131                 :         // set up stdio redirection
     132                 :         PRFileDesc* readStdin;  PRFileDesc* writeStdin;
     133                 :         PRFileDesc* readStdout; PRFileDesc* writeStdout;
     134                 :         PRFileDesc* readStderr; PRFileDesc* writeStderr;
     135               6 :         PRProcessAttr* pattr = PR_NewProcessAttr();
     136                 : 
     137               6 :         NS_ASSERTION(pattr, "couldn't allocate process attrs");
     138                 : 
     139               6 :         NS_ASSERTION(PR_SUCCESS == PR_CreatePipe(&readStdin, &writeStdin),
     140                 :                      "couldn't create child stdin pipe");
     141               6 :         NS_ASSERTION(PR_SUCCESS == PR_SetFDInheritable(readStdin, true),
     142                 :                      "couldn't set child stdin inheritable");
     143               6 :         PR_ProcessAttrSetStdioRedirect(pattr, PR_StandardInput, readStdin);
     144                 : 
     145               6 :         NS_ASSERTION(PR_SUCCESS == PR_CreatePipe(&readStdout, &writeStdout),
     146                 :                      "couldn't create child stdout pipe");
     147               6 :         NS_ASSERTION(PR_SUCCESS == PR_SetFDInheritable(writeStdout, true),
     148                 :                      "couldn't set child stdout inheritable");
     149               6 :         PR_ProcessAttrSetStdioRedirect(pattr, PR_StandardOutput, writeStdout);
     150                 : 
     151               6 :         NS_ASSERTION(PR_SUCCESS == PR_CreatePipe(&readStderr, &writeStderr),
     152                 :                      "couldn't create child stderr pipe");
     153               6 :         NS_ASSERTION(PR_SUCCESS == PR_SetFDInheritable(writeStderr, true),
     154                 :                      "couldn't set child stderr inheritable");
     155               6 :         PR_ProcessAttrSetStdioRedirect(pattr, PR_StandardError, writeStderr);
     156                 : 
     157                 :         // set up argv with test name to run
     158                 :         char* const newArgv[3] = {
     159               6 :             strdup(sPathToThisBinary),
     160               6 :             strdup(aTestName),
     161                 :             0
     162              18 :         };
     163                 : 
     164                 :         // make sure the child will abort if an assertion fails
     165               6 :         NS_ASSERTION(PR_SUCCESS == PR_SetEnv(sAssertBehaviorEnv),
     166                 :                      "couldn't set XPCOM_DEBUG_BREAK env var");
     167                 : 
     168                 :         PRProcess* proc;
     169               6 :         NS_ASSERTION(proc = PR_CreateProcess(sPathToThisBinary,
     170                 :                                              newArgv,
     171                 :                                              0, // inherit environment
     172                 :                                              pattr),
     173                 :                      "couldn't create process");
     174               6 :         PR_Close(readStdin);
     175               6 :         PR_Close(writeStdout);
     176               6 :         PR_Close(writeStderr);
     177                 : 
     178               6 :         mProc = proc;
     179               6 :         mStdinfd = writeStdin;
     180               6 :         mStdoutfd = readStdout;
     181               6 :         mStderrfd = readStderr;
     182                 : 
     183               6 :         free(newArgv[0]);
     184               6 :         free(newArgv[1]);
     185               6 :         PR_DestroyProcessAttr(pattr);
     186               6 :     }
     187                 : 
     188               6 :     void RunToCompletion(PRUint32 aWaitMs)
     189                 :     {
     190               6 :         PR_Close(mStdinfd);
     191                 : 
     192                 :         PRPollDesc pollfds[2];
     193                 :         PRInt32 nfds;
     194               6 :         bool stdoutOpen = true, stderrOpen = true;
     195                 :         char buf[4096];
     196                 :         PRInt32 len;
     197                 : 
     198               6 :         PRIntervalTime now = PR_IntervalNow();
     199               6 :         PRIntervalTime deadline = now + PR_MillisecondsToInterval(aWaitMs);
     200                 : 
     201             100 :         while ((stdoutOpen || stderrOpen) && now < deadline) {
     202              88 :             nfds = 0;
     203              88 :             if (stdoutOpen) {
     204              87 :                 pollfds[nfds].fd = mStdoutfd;
     205              87 :                 pollfds[nfds].in_flags = PR_POLL_READ;
     206              87 :                 pollfds[nfds].out_flags = 0;
     207              87 :                 ++nfds;
     208                 :             }
     209              88 :             if (stderrOpen) {
     210              88 :                 pollfds[nfds].fd = mStderrfd;
     211              88 :                 pollfds[nfds].in_flags = PR_POLL_READ;
     212              88 :                 pollfds[nfds].out_flags = 0;
     213              88 :                 ++nfds;
     214                 :             }
     215                 : 
     216              88 :             PRInt32 rv = PR_Poll(pollfds, nfds, deadline - now);
     217              88 :             NS_ASSERTION(0 <= rv, PR_ErrorToName(PR_GetError()));
     218                 : 
     219              88 :             if (0 == rv) {      // timeout
     220               0 :                 fputs("(timed out!)\n", stderr);
     221               0 :                 Finish(false); // abnormal
     222               0 :                 return;
     223                 :             }
     224                 : 
     225             263 :             for (PRInt32 i = 0; i < nfds; ++i) {
     226             175 :                 if (!pollfds[i].out_flags)
     227              82 :                     continue;
     228                 : 
     229              93 :                 bool isStdout = mStdoutfd == pollfds[i].fd;
     230                 :                 
     231              93 :                 if (PR_POLL_READ & pollfds[i].out_flags) {
     232              81 :                     len = PR_Read(pollfds[i].fd, buf, sizeof(buf) - 1);
     233              81 :                     NS_ASSERTION(0 <= len, PR_ErrorToName(PR_GetError()));
     234                 :                 }
     235              12 :                 else if (PR_POLL_HUP & pollfds[i].out_flags) {
     236              12 :                     len = 0;
     237                 :                 }
     238                 :                 else {
     239               0 :                     NS_ERROR(PR_ErrorToName(PR_GetError()));
     240                 :                 }
     241                 : 
     242              93 :                 if (0 < len) {
     243              81 :                     buf[len] = '\0';
     244              81 :                     if (isStdout)
     245               1 :                         mStdout += buf;
     246                 :                     else
     247              80 :                         mStderr += buf;
     248                 :                 }
     249              12 :                 else if (isStdout) {
     250               6 :                     stdoutOpen = false;
     251                 :                 }
     252                 :                 else {
     253               6 :                     stderrOpen = false;
     254                 :                 }
     255                 :             }
     256                 : 
     257              88 :             now = PR_IntervalNow();
     258                 :         }
     259                 : 
     260               6 :         if (stdoutOpen)
     261               0 :             fputs("(stdout still open!)\n", stderr);
     262               6 :         if (stderrOpen)
     263               0 :             fputs("(stderr still open!)\n", stderr);
     264               6 :         if (now > deadline)
     265               0 :             fputs("(timed out!)\n", stderr);
     266                 : 
     267               6 :         Finish(!stdoutOpen && !stderrOpen && now <= deadline);
     268                 :     }
     269                 : 
     270                 : private:
     271               6 :     void Finish(bool normalExit) {
     272               6 :         if (!normalExit) {
     273               0 :             PR_KillProcess(mProc);
     274               0 :             mExitCode = -1;
     275                 :             PRInt32 dummy;
     276               0 :             PR_WaitProcess(mProc, &dummy);
     277                 :         }
     278                 :         else {
     279               6 :             PR_WaitProcess(mProc, &mExitCode); // this had better not block ...
     280                 :         }
     281                 : 
     282               6 :         PR_Close(mStdoutfd);
     283               6 :         PR_Close(mStderrfd);
     284               6 :     }
     285                 : 
     286                 :     PRProcess* mProc;
     287                 :     PRFileDesc* mStdinfd;         // writeable
     288                 :     PRFileDesc* mStdoutfd;        // readable
     289                 :     PRFileDesc* mStderrfd;        // readable
     290                 : };
     291                 : 
     292                 : //-----------------------------------------------------------------------------
     293                 : // Harness for checking detector errors
     294                 : bool
     295               5 : CheckForDeadlock(const char* test, const char* const* findTokens)
     296                 : {
     297              10 :     Subprocess proc(test);
     298               5 :     proc.RunToCompletion(5000);
     299                 : 
     300               5 :     if (0 == proc.mExitCode)
     301               0 :         return false;
     302                 : 
     303               5 :     PRInt32 idx = 0;
     304              34 :     for (const char* const* tp = findTokens; *tp; ++tp) {
     305              29 :         const char* const token = *tp;
     306                 : #ifdef MOZILLA_INTERNAL_API
     307                 :         idx = proc.mStderr.Find(token, false, idx);
     308                 : #else
     309              58 :         nsCString tokenCString(token);
     310              29 :         idx = proc.mStderr.Find(tokenCString, idx);
     311                 : #endif
     312              29 :         if (-1 == idx) {
     313               0 :             printf("(missed token '%s' in output)\n", token);
     314               0 :             puts("----------------------------------\n");
     315               0 :             puts(proc.mStderr.get());
     316               0 :             puts("----------------------------------\n");
     317               0 :             return false;
     318                 :         }
     319              58 :         idx += strlen(token);
     320                 :     }
     321                 : 
     322               5 :     return true;
     323                 : }
     324                 : 
     325                 : //-----------------------------------------------------------------------------
     326                 : // Single-threaded sanity tests
     327                 : 
     328                 : // Stupidest possible deadlock.
     329                 : nsresult
     330               0 : Sanity_Child()
     331                 : {
     332               0 :     TestMutex m1("dd.sanity.m1");
     333               0 :     m1.Lock();
     334               0 :     m1.Lock();
     335               0 :     return 0;                  // not reached
     336                 : }
     337                 : 
     338                 : nsresult
     339               1 : Sanity()
     340                 : {
     341                 :     const char* const tokens[] = {
     342                 :         "###!!! ERROR: Potential deadlock detected",
     343                 :         "=== Cyclical dependency starts at\n--- Mutex : dd.sanity.m1",
     344                 :         "=== Cycle completed at\n--- Mutex : dd.sanity.m1",
     345                 :         "###!!! Deadlock may happen NOW!", // better catch these easy cases...
     346                 :         "###!!! ASSERTION: Potential deadlock detected",
     347                 :         0
     348               1 :     };
     349               1 :     if (CheckForDeadlock("Sanity", tokens)) {
     350               1 :         PASS();
     351                 :     } else {
     352               0 :         FAIL("deadlock not detected");
     353                 :     }
     354                 : }
     355                 : 
     356                 : // Slightly less stupid deadlock.
     357                 : nsresult
     358               0 : Sanity2_Child()
     359                 : {
     360               0 :     TestMutex m1("dd.sanity2.m1");
     361               0 :     TestMutex m2("dd.sanity2.m2");
     362               0 :     m1.Lock();
     363               0 :     m2.Lock();
     364               0 :     m1.Lock();
     365               0 :     return 0;                  // not reached
     366                 : }
     367                 : 
     368                 : nsresult
     369               1 : Sanity2()
     370                 : {
     371                 :     const char* const tokens[] = {
     372                 :         "###!!! ERROR: Potential deadlock detected",
     373                 :         "=== Cyclical dependency starts at\n--- Mutex : dd.sanity2.m1",
     374                 :         "--- Next dependency:\n--- Mutex : dd.sanity2.m2",
     375                 :         "=== Cycle completed at\n--- Mutex : dd.sanity2.m1",
     376                 :         "###!!! Deadlock may happen NOW!", // better catch these easy cases...
     377                 :         "###!!! ASSERTION: Potential deadlock detected",
     378                 :         0
     379               1 :     };
     380               1 :     if (CheckForDeadlock("Sanity2", tokens)) {
     381               1 :         PASS();
     382                 :     } else {
     383               0 :         FAIL("deadlock not detected");
     384                 :     }
     385                 : }
     386                 : 
     387                 : 
     388                 : nsresult
     389               0 : Sanity3_Child()
     390                 : {
     391               0 :     TestMutex m1("dd.sanity3.m1");
     392               0 :     TestMutex m2("dd.sanity3.m2");
     393               0 :     TestMutex m3("dd.sanity3.m3");
     394               0 :     TestMutex m4("dd.sanity3.m4");
     395                 : 
     396               0 :     m1.Lock();
     397               0 :     m2.Lock();
     398               0 :     m3.Lock();
     399               0 :     m4.Lock();
     400               0 :     m4.Unlock();
     401               0 :     m3.Unlock();
     402               0 :     m2.Unlock();
     403               0 :     m1.Unlock();
     404                 : 
     405               0 :     m4.Lock();
     406               0 :     m1.Lock();
     407               0 :     return 0;
     408                 : }
     409                 : 
     410                 : nsresult
     411               1 : Sanity3()
     412                 : {
     413                 :     const char* const tokens[] = {
     414                 :         "###!!! ERROR: Potential deadlock detected",
     415                 :         "=== Cyclical dependency starts at\n--- Mutex : dd.sanity3.m1",
     416                 :         "--- Next dependency:\n--- Mutex : dd.sanity3.m2",
     417                 :         "--- Next dependency:\n--- Mutex : dd.sanity3.m3",
     418                 :         "--- Next dependency:\n--- Mutex : dd.sanity3.m4",
     419                 :         "=== Cycle completed at\n--- Mutex : dd.sanity3.m1",
     420                 :         "###!!! ASSERTION: Potential deadlock detected",
     421                 :         0
     422               1 :     };
     423               1 :     if (CheckForDeadlock("Sanity3", tokens)) {
     424               1 :         PASS();
     425                 :     } else {
     426               0 :         FAIL("deadlock not detected");
     427                 :     }
     428                 : }
     429                 : 
     430                 : 
     431                 : nsresult
     432               0 : Sanity4_Child()
     433                 : {
     434               0 :     mozilla::ReentrantMonitor m1("dd.sanity4.m1");
     435               0 :     TestMutex m2("dd.sanity4.m2");
     436               0 :     m1.Enter();
     437               0 :     m2.Lock();
     438               0 :     m1.Enter();
     439               0 :     return 0;
     440                 : }
     441                 : 
     442                 : nsresult
     443               1 : Sanity4()
     444                 : {
     445                 :     const char* const tokens[] = {
     446                 :         "Re-entering ReentrantMonitor after acquiring other resources",
     447                 :         "###!!! ERROR: Potential deadlock detected",
     448                 :         "=== Cyclical dependency starts at\n--- ReentrantMonitor : dd.sanity4.m1",
     449                 :         "--- Next dependency:\n--- Mutex : dd.sanity4.m2",
     450                 :         "=== Cycle completed at\n--- ReentrantMonitor : dd.sanity4.m1",
     451                 :         "###!!! ASSERTION: Potential deadlock detected",
     452                 :         0
     453               1 :     };
     454               1 :     if (CheckForDeadlock("Sanity4", tokens)) {
     455               1 :         PASS();
     456                 :     } else {
     457               0 :         FAIL("deadlock not detected");
     458                 :     }
     459                 : }
     460                 : 
     461                 : //-----------------------------------------------------------------------------
     462                 : // Multithreaded tests
     463                 : 
     464                 : TestMutex* ttM1;
     465                 : TestMutex* ttM2;
     466                 : 
     467                 : static void
     468               0 : TwoThreads_thread(void* arg)
     469                 : {
     470               0 :     PRInt32 m1First = NS_PTR_TO_INT32(arg);
     471               0 :     if (m1First) {
     472               0 :         ttM1->Lock();
     473               0 :         ttM2->Lock();
     474               0 :         ttM2->Unlock();
     475               0 :         ttM1->Unlock();
     476                 :     }
     477                 :     else {
     478               0 :         ttM2->Lock();
     479               0 :         ttM1->Lock();
     480               0 :         ttM1->Unlock();
     481               0 :         ttM2->Unlock();
     482                 :     }
     483               0 : }
     484                 : 
     485                 : nsresult
     486               0 : TwoThreads_Child()
     487                 : {
     488               0 :     ttM1 = new TestMutex("dd.twothreads.m1");
     489               0 :     ttM2 = new TestMutex("dd.twothreads.m2");
     490               0 :     if (!ttM1 || !ttM2)
     491               0 :         NS_RUNTIMEABORT("couldn't allocate mutexes");
     492                 : 
     493               0 :     PRThread* t1 = spawn(TwoThreads_thread, (void*) 0);
     494               0 :     PR_JoinThread(t1);
     495                 : 
     496               0 :     PRThread* t2 = spawn(TwoThreads_thread, (void*) 1);
     497               0 :     PR_JoinThread(t2);
     498                 : 
     499               0 :     return 0;
     500                 : }
     501                 : 
     502                 : nsresult
     503               1 : TwoThreads()
     504                 : {
     505                 :     const char* const tokens[] = {
     506                 :         "###!!! ERROR: Potential deadlock detected",
     507                 :         "=== Cyclical dependency starts at\n--- Mutex : dd.twothreads.m2",
     508                 :         "--- Next dependency:\n--- Mutex : dd.twothreads.m1",
     509                 :         "=== Cycle completed at\n--- Mutex : dd.twothreads.m2",
     510                 :         "###!!! ASSERTION: Potential deadlock detected",
     511                 :         0
     512               1 :     };
     513                 : 
     514               1 :     if (CheckForDeadlock("TwoThreads", tokens)) {
     515               1 :         PASS();
     516                 :     } else {
     517               0 :         FAIL("deadlock not detected");
     518                 :     }
     519                 : }
     520                 : 
     521                 : 
     522                 : TestMutex* cndMs[4];
     523                 : const PRUint32 K = 100000;
     524                 : 
     525                 : static void
     526               3 : ContentionNoDeadlock_thread(void* arg)
     527                 : {
     528               3 :     PRInt32 starti = NS_PTR_TO_INT32(arg);
     529                 : 
     530          300003 :     for (PRUint32 k = 0; k < K; ++k) {
     531         1199932 :         for (PRInt32 i = starti; i < (PRInt32) ArrayLength(cndMs); ++i)
     532          899945 :             cndMs[i]->Lock();
     533                 :         // comment out the next two lines for deadlocking fun!
     534         1200000 :         for (PRInt32 i = ArrayLength(cndMs) - 1; i >= starti; --i)
     535          900000 :             cndMs[i]->Unlock();
     536                 : 
     537          300000 :         starti = (starti + 1) % 3;
     538                 :     }
     539               3 : }
     540                 : 
     541                 : nsresult
     542               1 : ContentionNoDeadlock_Child()
     543                 : {
     544                 :     PRThread* threads[3];
     545                 : 
     546               5 :     for (PRUint32 i = 0; i < ArrayLength(cndMs); ++i)
     547               4 :         cndMs[i] = new TestMutex("dd.cnd.ms");
     548                 : 
     549               4 :     for (PRInt32 i = 0; i < (PRInt32) ArrayLength(threads); ++i)
     550               3 :         threads[i] = spawn(ContentionNoDeadlock_thread, NS_INT32_TO_PTR(i));
     551                 : 
     552               4 :     for (PRUint32 i = 0; i < ArrayLength(threads); ++i)
     553               3 :         PR_JoinThread(threads[i]);
     554                 : 
     555               5 :     for (PRUint32 i = 0; i < ArrayLength(cndMs); ++i)
     556               4 :         delete cndMs[i];
     557                 : 
     558               1 :     return 0;
     559                 : }
     560                 : 
     561                 : nsresult
     562               1 : ContentionNoDeadlock()
     563                 : {
     564               1 :     const char * func = __func__;
     565               2 :     Subprocess proc(func);
     566               1 :     proc.RunToCompletion(60000);
     567               1 :     if (0 != proc.mExitCode) {
     568               0 :         printf("(expected 0 == return code, got %d)\n", proc.mExitCode);
     569               0 :         puts("(output)\n----------------------------------\n");
     570               0 :         puts(proc.mStdout.get());
     571               0 :         puts("----------------------------------\n");
     572               0 :         puts("(error output)\n----------------------------------\n");
     573               0 :         puts(proc.mStderr.get());
     574               0 :         puts("----------------------------------\n");
     575                 : 
     576               0 :         FAIL("deadlock");
     577                 :     }
     578               1 :     PASS();
     579                 : }
     580                 : 
     581                 : 
     582                 : 
     583                 : //-----------------------------------------------------------------------------
     584                 : 
     585                 : int
     586               2 : main(int argc, char** argv)
     587                 : {
     588               2 :     if (1 < argc) {
     589                 :         // XXX can we run w/o scoped XPCOM?
     590               1 :         const char* test = argv[1];
     591               2 :         ScopedXPCOM xpcom(test);
     592               1 :         if (xpcom.failed())
     593               0 :             return 1;
     594                 : 
     595                 :         // running in a spawned process.  call the specificed child function.
     596               1 :         if (!strcmp("Sanity", test))
     597               0 :             return Sanity_Child();
     598               1 :         if (!strcmp("Sanity2", test))
     599               0 :             return Sanity2_Child();
     600               1 :         if (!strcmp("Sanity3", test))
     601               0 :             return Sanity3_Child();
     602               1 :         if (!strcmp("Sanity4", test))
     603               0 :             return Sanity4_Child();
     604                 : 
     605               1 :         if (!strcmp("TwoThreads", test))
     606               0 :             return TwoThreads_Child();
     607               1 :         if (!strcmp("ContentionNoDeadlock", test))
     608               1 :             return ContentionNoDeadlock_Child();
     609                 : 
     610               0 :         FAIL("unknown child test");
     611                 :     }
     612                 : 
     613               2 :     ScopedXPCOM xpcom("Storage deadlock detector correctness (" __FILE__ ")");
     614               1 :     if (xpcom.failed())
     615               0 :         return 1;
     616                 : 
     617                 :     // in the first invocation of this process.  we will be the "driver".
     618               1 :     int rv = 0;
     619                 : 
     620               1 :     sPathToThisBinary = argv[0];
     621                 : 
     622               1 :     if (NS_FAILED(Sanity()))
     623               0 :         rv = 1;
     624               1 :     if (NS_FAILED(Sanity2()))
     625               0 :         rv = 1;
     626               1 :     if (NS_FAILED(Sanity3()))
     627               0 :         rv = 1;
     628               1 :     if (NS_FAILED(Sanity4()))
     629               0 :         rv = 1;
     630                 : 
     631               1 :     if (NS_FAILED(TwoThreads()))
     632               0 :         rv = 1;
     633               1 :     if (NS_FAILED(ContentionNoDeadlock()))
     634               0 :         rv = 1;
     635                 : 
     636               1 :     return rv;
     637                 : }

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