static void Test3(void)
{
RTTestSub(g_hTest, "Negative");
bool fSavedAssertQuiet = RTAssertSetQuiet(true);
bool fSavedAssertMayPanic = RTAssertSetMayPanic(false);
bool fSavedLckValEnabled = RTLockValidatorSetEnabled(false);
RTSEMRW hSemRW;
RTTEST_CHECK_RC_RETV(g_hTest, RTSemRWCreate(&hSemRW), VINF_SUCCESS);
RTTEST_CHECK_RC(g_hTest, RTSemRWReleaseRead(hSemRW), VERR_NOT_OWNER);
RTTEST_CHECK_RC(g_hTest, RTSemRWReleaseWrite(hSemRW), VERR_NOT_OWNER);
RTTEST_CHECK_RC(g_hTest, RTSemRWRequestWrite(hSemRW, RT_INDEFINITE_WAIT), VINF_SUCCESS);
RTTEST_CHECK_RC(g_hTest, RTSemRWReleaseRead(hSemRW), VERR_NOT_OWNER);
RTTEST_CHECK_RC(g_hTest, RTSemRWRequestRead(hSemRW, RT_INDEFINITE_WAIT), VINF_SUCCESS);
RTTEST_CHECK_RC(g_hTest, RTSemRWReleaseWrite(hSemRW), VERR_WRONG_ORDER); /* cannot release the final write before the reads. */
RTTEST_CHECK_RC(g_hTest, RTSemRWReleaseRead(hSemRW), VINF_SUCCESS);
RTTEST_CHECK_RC(g_hTest, RTSemRWReleaseWrite(hSemRW), VINF_SUCCESS);
RTTEST_CHECK_RC(g_hTest, RTSemRWDestroy(hSemRW), VINF_SUCCESS);
RTLockValidatorSetEnabled(fSavedLckValEnabled);
RTAssertSetMayPanic(fSavedAssertMayPanic);
RTAssertSetQuiet(fSavedAssertQuiet);
}
/*virtual*/ void RWLockHandle::unlockRead()
{
#ifdef GLUE_USE_CRITSECTRW
int vrc = RTCritSectRwLeaveShared(&m->CritSect);
#else
int vrc = RTSemRWReleaseRead(m->sem);
#endif
AssertRC(vrc);
}
DECLINLINE(void) rtThreadUnLockRD(void)
{
int rc = RTSemRWReleaseRead(g_ThreadRWSem);
AssertReleaseRC(rc);
}
static DECLCALLBACK(int) Test4Thread(RTTHREAD ThreadSelf, void *pvUser)
{
/* Use randomization to get a little more variation of the sync pattern.
We use a pseudo random generator here so that we don't end up testing
the speed of the /dev/urandom implementation, but rather the read-write
semaphores. */
int rc;
RTRAND hRand;
RTTEST_CHECK_RC_OK_RET(g_hTest, rc = RTRandAdvCreateParkMiller(&hRand), rc);
RTTEST_CHECK_RC_OK_RET(g_hTest, rc = RTRandAdvSeed(hRand, (uintptr_t)ThreadSelf), rc);
unsigned c100 = RTRandAdvU32Ex(hRand, 0, 99);
uint64_t *pcItr = (uint64_t *)pvUser;
bool fWrite;
for (;;)
{
unsigned readrec = RTRandAdvU32Ex(hRand, 0, 3);
unsigned writerec = RTRandAdvU32Ex(hRand, 0, 3);
/* Don't overdo recursion testing. */
if (readrec > 1)
readrec--;
if (writerec > 1)
writerec--;
fWrite = (c100 < g_uWritePercent);
if (fWrite)
{
for (unsigned i = 0; i <= writerec; i++)
{
rc = RTSemRWRequestWriteNoResume(g_hSemRW, RT_INDEFINITE_WAIT);
if (RT_FAILURE(rc))
{
RTTestFailed(g_hTest, "Write recursion %u on %s failed with rc=%Rrc", i, RTThreadSelfName(), rc);
break;
}
}
if (RT_FAILURE(rc))
break;
if (ASMAtomicIncU32(&g_cConcurrentWriters) != 1)
{
RTTestFailed(g_hTest, "g_cConcurrentWriters=%u on %s after write locking it",
g_cConcurrentWriters, RTThreadSelfName());
break;
}
if (g_cConcurrentReaders != 0)
{
RTTestFailed(g_hTest, "g_cConcurrentReaders=%u on %s after write locking it",
g_cConcurrentReaders, RTThreadSelfName());
break;
}
}
else
{
rc = RTSemRWRequestReadNoResume(g_hSemRW, RT_INDEFINITE_WAIT);
if (RT_FAILURE(rc))
{
RTTestFailed(g_hTest, "Read locking on %s failed with rc=%Rrc", RTThreadSelfName(), rc);
break;
}
ASMAtomicIncU32(&g_cConcurrentReaders);
if (g_cConcurrentWriters != 0)
{
RTTestFailed(g_hTest, "g_cConcurrentWriters=%u on %s after read locking it",
g_cConcurrentWriters, RTThreadSelfName());
break;
}
}
for (unsigned i = 0; i < readrec; i++)
{
rc = RTSemRWRequestReadNoResume(g_hSemRW, RT_INDEFINITE_WAIT);
if (RT_FAILURE(rc))
{
RTTestFailed(g_hTest, "Read recursion %u on %s failed with rc=%Rrc", i, RTThreadSelfName(), rc);
break;
}
}
if (RT_FAILURE(rc))
break;
/*
* Check for fairness: The values of the threads should not differ too much
*/
(*pcItr)++;
/*
* Check for correctness: Give other threads a chance. If the implementation is
* correct, no other thread will be able to enter this lock now.
*/
if (g_fYield)
RTThreadYield();
for (unsigned i = 0; i < readrec; i++)
{
rc = RTSemRWReleaseRead(g_hSemRW);
if (RT_FAILURE(rc))
{
RTTestFailed(g_hTest, "Read release %u on %s failed with rc=%Rrc", i, RTThreadSelfName(), rc);
break;
}
}
if (RT_FAILURE(rc))
break;
if (fWrite)
{
if (ASMAtomicDecU32(&g_cConcurrentWriters) != 0)
{
RTTestFailed(g_hTest, "g_cConcurrentWriters=%u on %s before write release",
g_cConcurrentWriters, RTThreadSelfName());
break;
}
if (g_cConcurrentReaders != 0)
{
RTTestFailed(g_hTest, "g_cConcurrentReaders=%u on %s before write release",
g_cConcurrentReaders, RTThreadSelfName());
break;
}
for (unsigned i = 0; i <= writerec; i++)
{
rc = RTSemRWReleaseWrite(g_hSemRW);
if (RT_FAILURE(rc))
{
RTTestFailed(g_hTest, "Write release %u on %s failed with rc=%Rrc", i, RTThreadSelfName(), rc);
break;
}
}
}
else
{
if (g_cConcurrentWriters != 0)
{
RTTestFailed(g_hTest, "g_cConcurrentWriters=%u on %s before read release",
g_cConcurrentWriters, RTThreadSelfName());
break;
}
ASMAtomicDecU32(&g_cConcurrentReaders);
rc = RTSemRWReleaseRead(g_hSemRW);
if (RT_FAILURE(rc))
{
RTTestFailed(g_hTest, "Read release on %s failed with rc=%Rrc", RTThreadSelfName(), rc);
break;
}
}
if (g_fTerminate)
break;
c100++;
c100 %= 100;
}
if (!g_fQuiet)
RTTestPrintf(g_hTest, RTTESTLVL_ALWAYS, "Thread %s exited with %lld\n", RTThreadSelfName(), *pcItr);
RTRandAdvDestroy(hRand);
return VINF_SUCCESS;
}
static bool Test1(void)
{
RTTestSub(g_hTest, "Basics");
RTSEMRW hSemRW = NIL_RTSEMRW;
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWCreate(&hSemRW), VINF_SUCCESS, false);
RTTEST_CHECK_RET(g_hTest, hSemRW != NIL_RTSEMRW, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestRead(hSemRW, RT_INDEFINITE_WAIT), VINF_SUCCESS, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseRead(hSemRW), VINF_SUCCESS, false);
for (unsigned cMs = 0; cMs < 50; cMs++)
{
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestRead(hSemRW, cMs), VINF_SUCCESS, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestRead(hSemRW, cMs), VINF_SUCCESS, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseRead(hSemRW), VINF_SUCCESS, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseRead(hSemRW), VINF_SUCCESS, false);
}
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestWrite(hSemRW, RT_INDEFINITE_WAIT), VINF_SUCCESS, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseWrite(hSemRW), VINF_SUCCESS, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestWrite(hSemRW, RT_INDEFINITE_WAIT), VINF_SUCCESS, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestRead(hSemRW, RT_INDEFINITE_WAIT), VINF_SUCCESS, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseRead(hSemRW), VINF_SUCCESS, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseWrite(hSemRW), VINF_SUCCESS, false);
for (unsigned cMs = 0; cMs < 50; cMs++)
{
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestWrite(hSemRW, cMs), VINF_SUCCESS, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 1, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 0, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestWrite(hSemRW, cMs), VINF_SUCCESS, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 2, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 0, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestRead(hSemRW, cMs), VINF_SUCCESS, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 2, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 1, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestWrite(hSemRW, cMs), VINF_SUCCESS, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 3, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 1, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
/* midway */
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseWrite(hSemRW), VINF_SUCCESS, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 2, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 1, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseRead(hSemRW), VINF_SUCCESS, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 2, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 0, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseWrite(hSemRW), VINF_SUCCESS, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 1, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 0, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseWrite(hSemRW), VINF_SUCCESS, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 0, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 0, false);
RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == false, false);
}
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWDestroy(hSemRW), VINF_SUCCESS, false);
RTTEST_CHECK_RC_RET(g_hTest, RTSemRWDestroy(NIL_RTSEMRW), VINF_SUCCESS, false);
return true;
}
RTDECL(int) RTDbgModCreateFromMap(PRTDBGMOD phDbgMod, const char *pszFilename, const char *pszName, RTUINTPTR uSubtrahend, uint32_t fFlags)
{
/*
* Input validation and lazy initialization.
*/
AssertPtrReturn(phDbgMod, VERR_INVALID_POINTER);
*phDbgMod = NIL_RTDBGMOD;
AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
AssertReturn(*pszFilename, VERR_INVALID_PARAMETER);
AssertPtrNullReturn(pszName, VERR_INVALID_POINTER);
AssertReturn(fFlags == 0, VERR_INVALID_PARAMETER);
int rc = rtDbgModLazyInit();
if (RT_FAILURE(rc))
return rc;
if (!pszName)
pszName = RTPathFilename(pszFilename);
/*
* Allocate a new module instance.
*/
PRTDBGMODINT pDbgMod = (PRTDBGMODINT)RTMemAllocZ(sizeof(*pDbgMod));
if (!pDbgMod)
return VERR_NO_MEMORY;
pDbgMod->u32Magic = RTDBGMOD_MAGIC;
pDbgMod->cRefs = 1;
rc = RTCritSectInit(&pDbgMod->CritSect);
if (RT_SUCCESS(rc))
{
pDbgMod->pszName = RTStrCacheEnter(g_hDbgModStrCache, pszName);
if (pDbgMod->pszName)
{
pDbgMod->pszDbgFile = RTStrCacheEnter(g_hDbgModStrCache, pszFilename);
if (pDbgMod->pszDbgFile)
{
/*
* Try the map file readers.
*/
rc = RTSemRWRequestRead(g_hDbgModRWSem, RT_INDEFINITE_WAIT);
if (RT_SUCCESS(rc))
{
rc = VERR_DBG_NO_MATCHING_INTERPRETER;
for (PRTDBGMODREGDBG pCur = g_pDbgHead; pCur; pCur = pCur->pNext)
{
if (pCur->pVt->fSupports & RT_DBGTYPE_MAP)
{
pDbgMod->pDbgVt = pCur->pVt;
pDbgMod->pvDbgPriv = NULL;
rc = pCur->pVt->pfnTryOpen(pDbgMod);
if (RT_SUCCESS(rc))
{
ASMAtomicIncU32(&pCur->cUsers);
RTSemRWReleaseRead(g_hDbgModRWSem);
*phDbgMod = pDbgMod;
return rc;
}
}
}
/* bail out */
RTSemRWReleaseRead(g_hDbgModRWSem);
}
RTStrCacheRelease(g_hDbgModStrCache, pDbgMod->pszName);
}
RTStrCacheRelease(g_hDbgModStrCache, pDbgMod->pszDbgFile);
}
RTCritSectDelete(&pDbgMod->CritSect);
}
RTMemFree(pDbgMod);
return rc;
}
