LCOV - code coverage report
Current view: directory - xpcom/tests - TestDeadlockDetector.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 259 159 61.4 %
Date: 2012-06-02 Functions: 21 15 71.4 %

       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                 : #include "mozilla/Util.h"
      41                 : 
      42                 : #include "prenv.h"
      43                 : #include "prerror.h"
      44                 : #include "prio.h"
      45                 : #include "prproces.h"
      46                 : 
      47                 : #include "nsMemory.h"
      48                 : 
      49                 : #include "mozilla/CondVar.h"
      50                 : #include "mozilla/ReentrantMonitor.h"
      51                 : #include "mozilla/Mutex.h"
      52                 : 
      53                 : #include "TestHarness.h"
      54                 : 
      55                 : using namespace mozilla;
      56                 : 
      57                 : static PRThread*
      58               3 : spawn(void (*run)(void*), void* arg)
      59                 : {
      60                 :     return PR_CreateThread(PR_SYSTEM_THREAD,
      61                 :                            run,
      62                 :                            arg,
      63                 :                            PR_PRIORITY_NORMAL,
      64                 :                            PR_GLOBAL_THREAD,
      65                 :                            PR_JOINABLE_THREAD,
      66               3 :                            0);
      67                 : }
      68                 : 
      69                 : #define PASS()                                  \
      70                 :     do {                                        \
      71                 :         passed(__FUNCTION__);                   \
      72                 :         return NS_OK;                           \
      73                 :     } while (0)
      74                 : 
      75                 : #define FAIL(why)                               \
      76                 :     do {                                        \
      77                 :         fail("%s | %s - %s", __FILE__, __FUNCTION__, why); \
      78                 :         return NS_ERROR_FAILURE;                \
      79                 :     } while (0)
      80                 : 
      81                 : //-----------------------------------------------------------------------------
      82                 : 
      83                 : static const char* sPathToThisBinary;
      84                 : static const char* sAssertBehaviorEnv = "XPCOM_DEBUG_BREAK=abort";
      85                 : 
      86                 : class Subprocess
      87               6 : {
      88                 : public:
      89                 :     // not available until process finishes
      90                 :     PRInt32 mExitCode;
      91                 :     nsCString mStdout;
      92                 :     nsCString mStderr;
      93                 : 
      94               6 :     Subprocess(const char* aTestName) {
      95                 :         // set up stdio redirection
      96                 :         PRFileDesc* readStdin;  PRFileDesc* writeStdin;
      97                 :         PRFileDesc* readStdout; PRFileDesc* writeStdout;
      98                 :         PRFileDesc* readStderr; PRFileDesc* writeStderr;
      99               6 :         PRProcessAttr* pattr = PR_NewProcessAttr();
     100                 : 
     101               6 :         NS_ASSERTION(pattr, "couldn't allocate process attrs");
     102                 : 
     103               6 :         NS_ASSERTION(PR_SUCCESS == PR_CreatePipe(&readStdin, &writeStdin),
     104                 :                      "couldn't create child stdin pipe");
     105               6 :         NS_ASSERTION(PR_SUCCESS == PR_SetFDInheritable(readStdin, true),
     106                 :                      "couldn't set child stdin inheritable");
     107               6 :         PR_ProcessAttrSetStdioRedirect(pattr, PR_StandardInput, readStdin);
     108                 : 
     109               6 :         NS_ASSERTION(PR_SUCCESS == PR_CreatePipe(&readStdout, &writeStdout),
     110                 :                      "couldn't create child stdout pipe");
     111               6 :         NS_ASSERTION(PR_SUCCESS == PR_SetFDInheritable(writeStdout, true),
     112                 :                      "couldn't set child stdout inheritable");
     113               6 :         PR_ProcessAttrSetStdioRedirect(pattr, PR_StandardOutput, writeStdout);
     114                 : 
     115               6 :         NS_ASSERTION(PR_SUCCESS == PR_CreatePipe(&readStderr, &writeStderr),
     116                 :                      "couldn't create child stderr pipe");
     117               6 :         NS_ASSERTION(PR_SUCCESS == PR_SetFDInheritable(writeStderr, true),
     118                 :                      "couldn't set child stderr inheritable");
     119               6 :         PR_ProcessAttrSetStdioRedirect(pattr, PR_StandardError, writeStderr);
     120                 : 
     121                 :         // set up argv with test name to run
     122                 :         char* const newArgv[3] = {
     123               6 :             strdup(sPathToThisBinary),
     124               6 :             strdup(aTestName),
     125                 :             0
     126              18 :         };
     127                 : 
     128                 :         // make sure the child will abort if an assertion fails
     129               6 :         NS_ASSERTION(PR_SUCCESS == PR_SetEnv(sAssertBehaviorEnv),
     130                 :                      "couldn't set XPCOM_DEBUG_BREAK env var");
     131                 : 
     132                 :         PRProcess* proc;
     133               6 :         NS_ASSERTION(proc = PR_CreateProcess(sPathToThisBinary,
     134                 :                                              newArgv,
     135                 :                                              0, // inherit environment
     136                 :                                              pattr),
     137                 :                      "couldn't create process");
     138               6 :         PR_Close(readStdin);
     139               6 :         PR_Close(writeStdout);
     140               6 :         PR_Close(writeStderr);
     141                 : 
     142               6 :         mProc = proc;
     143               6 :         mStdinfd = writeStdin;
     144               6 :         mStdoutfd = readStdout;
     145               6 :         mStderrfd = readStderr;
     146                 : 
     147               6 :         free(newArgv[0]);
     148               6 :         free(newArgv[1]);
     149               6 :         PR_DestroyProcessAttr(pattr);
     150               6 :     }
     151                 : 
     152               6 :     void RunToCompletion(PRUint32 aWaitMs)
     153                 :     {
     154               6 :         PR_Close(mStdinfd);
     155                 : 
     156                 :         PRPollDesc pollfds[2];
     157                 :         PRInt32 nfds;
     158               6 :         bool stdoutOpen = true, stderrOpen = true;
     159                 :         char buf[4096];
     160                 :         PRInt32 len;
     161                 : 
     162               6 :         PRIntervalTime now = PR_IntervalNow();
     163               6 :         PRIntervalTime deadline = now + PR_MillisecondsToInterval(aWaitMs);
     164                 : 
     165              80 :         while ((stdoutOpen || stderrOpen) && now < deadline) {
     166              68 :             nfds = 0;
     167              68 :             if (stdoutOpen) {
     168              66 :                 pollfds[nfds].fd = mStdoutfd;
     169              66 :                 pollfds[nfds].in_flags = PR_POLL_READ;
     170              66 :                 pollfds[nfds].out_flags = 0;
     171              66 :                 ++nfds;
     172                 :             }
     173              68 :             if (stderrOpen) {
     174              68 :                 pollfds[nfds].fd = mStderrfd;
     175              68 :                 pollfds[nfds].in_flags = PR_POLL_READ;
     176              68 :                 pollfds[nfds].out_flags = 0;
     177              68 :                 ++nfds;
     178                 :             }
     179                 : 
     180              68 :             PRInt32 rv = PR_Poll(pollfds, nfds, deadline - now);
     181              68 :             NS_ASSERTION(0 <= rv, PR_ErrorToName(PR_GetError()));
     182                 : 
     183              68 :             if (0 == rv) {      // timeout
     184               0 :                 fputs("(timed out!)\n", stderr);
     185               0 :                 Finish(false); // abnormal
     186               0 :                 return;
     187                 :             }
     188                 : 
     189             202 :             for (PRInt32 i = 0; i < nfds; ++i) {
     190             134 :                 if (!pollfds[i].out_flags)
     191              62 :                     continue;
     192                 : 
     193              72 :                 bool isStdout = mStdoutfd == pollfds[i].fd;
     194                 :                 
     195              72 :                 if (PR_POLL_READ & pollfds[i].out_flags) {
     196              60 :                     len = PR_Read(pollfds[i].fd, buf, sizeof(buf) - 1);
     197              60 :                     NS_ASSERTION(0 <= len, PR_ErrorToName(PR_GetError()));
     198                 :                 }
     199              12 :                 else if (PR_POLL_HUP & pollfds[i].out_flags) {
     200              12 :                     len = 0;
     201                 :                 }
     202                 :                 else {
     203               0 :                     NS_ERROR(PR_ErrorToName(PR_GetError()));
     204                 :                 }
     205                 : 
     206              72 :                 if (0 < len) {
     207              60 :                     buf[len] = '\0';
     208              60 :                     if (isStdout)
     209               1 :                         mStdout += buf;
     210                 :                     else
     211              59 :                         mStderr += buf;
     212                 :                 }
     213              12 :                 else if (isStdout) {
     214               6 :                     stdoutOpen = false;
     215                 :                 }
     216                 :                 else {
     217               6 :                     stderrOpen = false;
     218                 :                 }
     219                 :             }
     220                 : 
     221              68 :             now = PR_IntervalNow();
     222                 :         }
     223                 : 
     224               6 :         if (stdoutOpen)
     225               0 :             fputs("(stdout still open!)\n", stderr);
     226               6 :         if (stderrOpen)
     227               0 :             fputs("(stderr still open!)\n", stderr);
     228               6 :         if (now > deadline)
     229               0 :             fputs("(timed out!)\n", stderr);
     230                 : 
     231               6 :         Finish(!stdoutOpen && !stderrOpen && now <= deadline);
     232                 :     }
     233                 : 
     234                 : private:
     235               6 :     void Finish(bool normalExit) {
     236               6 :         if (!normalExit) {
     237               0 :             PR_KillProcess(mProc);
     238               0 :             mExitCode = -1;
     239                 :             PRInt32 dummy;
     240               0 :             PR_WaitProcess(mProc, &dummy);
     241                 :         }
     242                 :         else {
     243               6 :             PR_WaitProcess(mProc, &mExitCode); // this had better not block ...
     244                 :         }
     245                 : 
     246               6 :         PR_Close(mStdoutfd);
     247               6 :         PR_Close(mStderrfd);
     248               6 :     }
     249                 : 
     250                 :     PRProcess* mProc;
     251                 :     PRFileDesc* mStdinfd;         // writeable
     252                 :     PRFileDesc* mStdoutfd;        // readable
     253                 :     PRFileDesc* mStderrfd;        // readable
     254                 : };
     255                 : 
     256                 : //-----------------------------------------------------------------------------
     257                 : // Harness for checking detector errors
     258                 : bool
     259               5 : CheckForDeadlock(const char* test, const char* const* findTokens)
     260                 : {
     261              10 :     Subprocess proc(test);
     262               5 :     proc.RunToCompletion(5000);
     263                 : 
     264               5 :     if (0 == proc.mExitCode)
     265               0 :         return false;
     266                 : 
     267               5 :     PRInt32 idx = 0;
     268              34 :     for (const char* const* tp = findTokens; *tp; ++tp) {
     269              29 :         const char* const token = *tp;
     270                 : #ifdef MOZILLA_INTERNAL_API
     271                 :         idx = proc.mStderr.Find(token, false, idx);
     272                 : #else
     273              58 :         nsCString tokenCString(token);
     274              29 :         idx = proc.mStderr.Find(tokenCString, idx);
     275                 : #endif
     276              29 :         if (-1 == idx) {
     277               0 :             printf("(missed token '%s' in output)\n", token);
     278               0 :             puts("----------------------------------\n");
     279               0 :             puts(proc.mStderr.get());
     280               0 :             puts("----------------------------------\n");
     281               0 :             return false;
     282                 :         }
     283              58 :         idx += strlen(token);
     284                 :     }
     285                 : 
     286               5 :     return true;
     287                 : }
     288                 : 
     289                 : //-----------------------------------------------------------------------------
     290                 : // Single-threaded sanity tests
     291                 : 
     292                 : // Stupidest possible deadlock.
     293                 : nsresult
     294               0 : Sanity_Child()
     295                 : {
     296               0 :     mozilla::Mutex m1("dd.sanity.m1");
     297               0 :     m1.Lock();
     298               0 :     m1.Lock();
     299               0 :     return 0;                  // not reached
     300                 : }
     301                 : 
     302                 : nsresult
     303               1 : Sanity()
     304                 : {
     305                 :     const char* const tokens[] = {
     306                 :         "###!!! ERROR: Potential deadlock detected",
     307                 :         "=== Cyclical dependency starts at\n--- Mutex : dd.sanity.m1",
     308                 :         "=== Cycle completed at\n--- Mutex : dd.sanity.m1",
     309                 :         "###!!! Deadlock may happen NOW!", // better catch these easy cases...
     310                 :         "###!!! ASSERTION: Potential deadlock detected",
     311                 :         0
     312               1 :     };
     313               1 :     if (CheckForDeadlock("Sanity", tokens)) {
     314               1 :         PASS();
     315                 :     } else {
     316               0 :         FAIL("deadlock not detected");
     317                 :     }
     318                 : }
     319                 : 
     320                 : // Slightly less stupid deadlock.
     321                 : nsresult
     322               0 : Sanity2_Child()
     323                 : {
     324               0 :     mozilla::Mutex m1("dd.sanity2.m1");
     325               0 :     mozilla::Mutex m2("dd.sanity2.m2");
     326               0 :     m1.Lock();
     327               0 :     m2.Lock();
     328               0 :     m1.Lock();
     329               0 :     return 0;                  // not reached
     330                 : }
     331                 : 
     332                 : nsresult
     333               1 : Sanity2()
     334                 : {
     335                 :     const char* const tokens[] = {
     336                 :         "###!!! ERROR: Potential deadlock detected",
     337                 :         "=== Cyclical dependency starts at\n--- Mutex : dd.sanity2.m1",
     338                 :         "--- Next dependency:\n--- Mutex : dd.sanity2.m2",
     339                 :         "=== Cycle completed at\n--- Mutex : dd.sanity2.m1",
     340                 :         "###!!! Deadlock may happen NOW!", // better catch these easy cases...
     341                 :         "###!!! ASSERTION: Potential deadlock detected",
     342                 :         0
     343               1 :     };
     344               1 :     if (CheckForDeadlock("Sanity2", tokens)) {
     345               1 :         PASS();
     346                 :     } else {
     347               0 :         FAIL("deadlock not detected");
     348                 :     }
     349                 : }
     350                 : 
     351                 : 
     352                 : nsresult
     353               0 : Sanity3_Child()
     354                 : {
     355               0 :     mozilla::Mutex m1("dd.sanity3.m1");
     356               0 :     mozilla::Mutex m2("dd.sanity3.m2");
     357               0 :     mozilla::Mutex m3("dd.sanity3.m3");
     358               0 :     mozilla::Mutex m4("dd.sanity3.m4");
     359                 : 
     360               0 :     m1.Lock();
     361               0 :     m2.Lock();
     362               0 :     m3.Lock();
     363               0 :     m4.Lock();
     364               0 :     m4.Unlock();
     365               0 :     m3.Unlock();
     366               0 :     m2.Unlock();
     367               0 :     m1.Unlock();
     368                 : 
     369               0 :     m4.Lock();
     370               0 :     m1.Lock();
     371               0 :     return 0;
     372                 : }
     373                 : 
     374                 : nsresult
     375               1 : Sanity3()
     376                 : {
     377                 :     const char* const tokens[] = {
     378                 :         "###!!! ERROR: Potential deadlock detected",
     379                 :         "=== Cyclical dependency starts at\n--- Mutex : dd.sanity3.m1",
     380                 :         "--- Next dependency:\n--- Mutex : dd.sanity3.m2",
     381                 :         "--- Next dependency:\n--- Mutex : dd.sanity3.m3",
     382                 :         "--- Next dependency:\n--- Mutex : dd.sanity3.m4",
     383                 :         "=== Cycle completed at\n--- Mutex : dd.sanity3.m1",
     384                 :         "###!!! ASSERTION: Potential deadlock detected",
     385                 :         0
     386               1 :     };
     387               1 :     if (CheckForDeadlock("Sanity3", tokens)) {
     388               1 :         PASS();
     389                 :     } else {
     390               0 :         FAIL("deadlock not detected");
     391                 :     }
     392                 : }
     393                 : 
     394                 : 
     395                 : nsresult
     396               0 : Sanity4_Child()
     397                 : {
     398               0 :     mozilla::ReentrantMonitor m1("dd.sanity4.m1");
     399               0 :     mozilla::Mutex m2("dd.sanity4.m2");
     400               0 :     m1.Enter();
     401               0 :     m2.Lock();
     402               0 :     m1.Enter();
     403               0 :     return 0;
     404                 : }
     405                 : 
     406                 : nsresult
     407               1 : Sanity4()
     408                 : {
     409                 :     const char* const tokens[] = {
     410                 :         "Re-entering ReentrantMonitor after acquiring other resources",
     411                 :         "###!!! ERROR: Potential deadlock detected",
     412                 :         "=== Cyclical dependency starts at\n--- ReentrantMonitor : dd.sanity4.m1",
     413                 :         "--- Next dependency:\n--- Mutex : dd.sanity4.m2",
     414                 :         "=== Cycle completed at\n--- ReentrantMonitor : dd.sanity4.m1",
     415                 :         "###!!! ASSERTION: Potential deadlock detected",
     416                 :         0
     417               1 :     };
     418               1 :     if (CheckForDeadlock("Sanity4", tokens)) {
     419               1 :         PASS();
     420                 :     } else {
     421               0 :         FAIL("deadlock not detected");
     422                 :     }
     423                 : }
     424                 : 
     425                 : //-----------------------------------------------------------------------------
     426                 : // Multithreaded tests
     427                 : 
     428                 : mozilla::Mutex* ttM1;
     429                 : mozilla::Mutex* ttM2;
     430                 : 
     431                 : static void
     432               0 : TwoThreads_thread(void* arg)
     433                 : {
     434               0 :     PRInt32 m1First = NS_PTR_TO_INT32(arg);
     435               0 :     if (m1First) {
     436               0 :         ttM1->Lock();
     437               0 :         ttM2->Lock();
     438               0 :         ttM2->Unlock();
     439               0 :         ttM1->Unlock();
     440                 :     }
     441                 :     else {
     442               0 :         ttM2->Lock();
     443               0 :         ttM1->Lock();
     444               0 :         ttM1->Unlock();
     445               0 :         ttM2->Unlock();
     446                 :     }
     447               0 : }
     448                 : 
     449                 : nsresult
     450               0 : TwoThreads_Child()
     451                 : {
     452               0 :     ttM1 = new mozilla::Mutex("dd.twothreads.m1");
     453               0 :     ttM2 = new mozilla::Mutex("dd.twothreads.m2");
     454               0 :     if (!ttM1 || !ttM2)
     455               0 :         NS_RUNTIMEABORT("couldn't allocate mutexes");
     456                 : 
     457               0 :     PRThread* t1 = spawn(TwoThreads_thread, (void*) 0);
     458               0 :     PR_JoinThread(t1);
     459                 : 
     460               0 :     PRThread* t2 = spawn(TwoThreads_thread, (void*) 1);
     461               0 :     PR_JoinThread(t2);
     462                 : 
     463               0 :     return 0;
     464                 : }
     465                 : 
     466                 : nsresult
     467               1 : TwoThreads()
     468                 : {
     469                 :     const char* const tokens[] = {
     470                 :         "###!!! ERROR: Potential deadlock detected",
     471                 :         "=== Cyclical dependency starts at\n--- Mutex : dd.twothreads.m2",
     472                 :         "--- Next dependency:\n--- Mutex : dd.twothreads.m1",
     473                 :         "=== Cycle completed at\n--- Mutex : dd.twothreads.m2",
     474                 :         "###!!! ASSERTION: Potential deadlock detected",
     475                 :         0
     476               1 :     };
     477                 : 
     478               1 :     if (CheckForDeadlock("TwoThreads", tokens)) {
     479               1 :         PASS();
     480                 :     } else {
     481               0 :         FAIL("deadlock not detected");
     482                 :     }
     483                 : }
     484                 : 
     485                 : 
     486                 : mozilla::Mutex* cndMs[4];
     487                 : const PRUint32 K = 100000;
     488                 : 
     489                 : static void
     490               3 : ContentionNoDeadlock_thread(void* arg)
     491                 : {
     492               3 :     PRInt32 starti = NS_PTR_TO_INT32(arg);
     493                 : 
     494          300003 :     for (PRUint32 k = 0; k < K; ++k) {
     495         1199963 :         for (PRInt32 i = starti; i < (PRInt32) ArrayLength(cndMs); ++i)
     496          899974 :             cndMs[i]->Lock();
     497                 :         // comment out the next two lines for deadlocking fun!
     498         1200000 :         for (PRInt32 i = ArrayLength(cndMs) - 1; i >= starti; --i)
     499          900000 :             cndMs[i]->Unlock();
     500                 : 
     501          300000 :         starti = (starti + 1) % 3;
     502                 :     }
     503               3 : }
     504                 : 
     505                 : nsresult
     506               1 : ContentionNoDeadlock_Child()
     507                 : {
     508                 :     PRThread* threads[3];
     509                 : 
     510               5 :     for (PRUint32 i = 0; i < ArrayLength(cndMs); ++i)
     511               4 :         cndMs[i] = new mozilla::Mutex("dd.cnd.ms");
     512                 : 
     513               4 :     for (PRInt32 i = 0; i < (PRInt32) ArrayLength(threads); ++i)
     514               3 :         threads[i] = spawn(ContentionNoDeadlock_thread, NS_INT32_TO_PTR(i));
     515                 : 
     516               4 :     for (PRUint32 i = 0; i < ArrayLength(threads); ++i)
     517               3 :         PR_JoinThread(threads[i]);
     518                 : 
     519               5 :     for (PRUint32 i = 0; i < ArrayLength(cndMs); ++i)
     520               4 :         delete cndMs[i];
     521                 : 
     522               1 :     return 0;
     523                 : }
     524                 : 
     525                 : nsresult
     526               1 : ContentionNoDeadlock()
     527                 : {
     528               1 :     const char * func = __func__;
     529               2 :     Subprocess proc(func);
     530               1 :     proc.RunToCompletion(60000);
     531               1 :     if (0 != proc.mExitCode) {
     532               0 :         printf("(expected 0 == return code, got %d)\n", proc.mExitCode);
     533               0 :         puts("(output)\n----------------------------------\n");
     534               0 :         puts(proc.mStdout.get());
     535               0 :         puts("----------------------------------\n");
     536               0 :         puts("(error output)\n----------------------------------\n");
     537               0 :         puts(proc.mStderr.get());
     538               0 :         puts("----------------------------------\n");
     539                 : 
     540               0 :         FAIL("deadlock");
     541                 :     }
     542               1 :     PASS();
     543                 : }
     544                 : 
     545                 : 
     546                 : 
     547                 : //-----------------------------------------------------------------------------
     548                 : 
     549                 : int
     550               2 : main(int argc, char** argv)
     551                 : {
     552               2 :     if (1 < argc) {
     553                 :         // XXX can we run w/o scoped XPCOM?
     554               1 :         const char* test = argv[1];
     555               2 :         ScopedXPCOM xpcom(test);
     556               1 :         if (xpcom.failed())
     557               0 :             return 1;
     558                 : 
     559                 :         // running in a spawned process.  call the specificed child function.
     560               1 :         if (!strcmp("Sanity", test))
     561               0 :             return Sanity_Child();
     562               1 :         if (!strcmp("Sanity2", test))
     563               0 :             return Sanity2_Child();
     564               1 :         if (!strcmp("Sanity3", test))
     565               0 :             return Sanity3_Child();
     566               1 :         if (!strcmp("Sanity4", test))
     567               0 :             return Sanity4_Child();
     568                 : 
     569               1 :         if (!strcmp("TwoThreads", test))
     570               0 :             return TwoThreads_Child();
     571               1 :         if (!strcmp("ContentionNoDeadlock", test))
     572               1 :             return ContentionNoDeadlock_Child();
     573                 : 
     574               0 :         FAIL("unknown child test");
     575                 :     }
     576                 : 
     577               2 :     ScopedXPCOM xpcom("XPCOM deadlock detector correctness (" __FILE__ ")");
     578               1 :     if (xpcom.failed())
     579               0 :         return 1;
     580                 : 
     581                 :     // in the first invocation of this process.  we will be the "driver".
     582               1 :     int rv = 0;
     583                 : 
     584               1 :     sPathToThisBinary = argv[0];
     585                 : 
     586               1 :     if (NS_FAILED(Sanity()))
     587               0 :         rv = 1;
     588               1 :     if (NS_FAILED(Sanity2()))
     589               0 :         rv = 1;
     590               1 :     if (NS_FAILED(Sanity3()))
     591               0 :         rv = 1;
     592               1 :     if (NS_FAILED(Sanity4()))
     593               0 :         rv = 1;
     594                 : 
     595               1 :     if (NS_FAILED(TwoThreads()))
     596               0 :         rv = 1;
     597               1 :     if (NS_FAILED(ContentionNoDeadlock()))
     598               0 :         rv = 1;
     599                 : 
     600               1 :     return rv;
     601                 : }

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