RTDECL(int) RTSemMutexRequest(RTSEMMUTEX Mutex, RTMSINTERVAL cMillies)
{
int rc;
if (cMillies == RT_INDEFINITE_WAIT)
{
do rc = RTSemMutexRequestNoResume(Mutex, cMillies);
while (rc == VERR_INTERRUPTED);
}
else
{
const uint64_t u64Start = RTTimeMilliTS();
rc = RTSemMutexRequestNoResume(Mutex, cMillies);
if (rc == VERR_INTERRUPTED)
{
do
{
uint64_t u64Elapsed = RTTimeMilliTS() - u64Start;
if (u64Elapsed >= cMillies)
return VERR_TIMEOUT;
rc = RTSemMutexRequestNoResume(Mutex, cMillies - (RTMSINTERVAL)u64Elapsed);
} while (rc == VERR_INTERRUPTED);
}
}
return rc;
}
int ThreadTest1(RTTHREAD ThreadSelf, void *pvUser)
{
uint64_t *pu64 = (uint64_t *)pvUser;
for (;;)
{
int rc = RTSemMutexRequestNoResume(g_hMutex, RT_INDEFINITE_WAIT);
if (RT_FAILURE(rc))
{
PrintError("%x: RTSemMutexRequestNoResume failed with %Rrc\n", rc);
break;
}
if (ASMAtomicIncU32(&g_cbConcurrent) != 1)
{
PrintError("g_cbConcurrent=%d after request!\n", g_cbConcurrent);
break;
}
/*
* Check for fairness: The values of the threads should not differ too much
*/
(*pu64)++;
/*
* 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();
if (ASMAtomicDecU32(&g_cbConcurrent) != 0)
{
PrintError("g_cbConcurrent=%d before release!\n", g_cbConcurrent);
break;
}
rc = RTSemMutexRelease(g_hMutex);
if (RT_FAILURE(rc))
{
PrintError("%x: RTSemMutexRelease failed with %Rrc\n", rc);
break;
}
if (g_fTerminate)
break;
}
if (!g_fQuiet)
RTPrintf("tstSemMutex: Thread %08x exited with %lld\n", ThreadSelf, *pu64);
return VINF_SUCCESS;
}
RTDECL(int) RTSemMutexRequestNoResumeDebug(RTSEMMUTEX hMutexSem, RTMSINTERVAL cMillies, RTHCUINTPTR uId, RT_SRC_POS_DECL)
{
return RTSemMutexRequestNoResume(hMutexSem, cMillies);
}
/**
* Service request callback function.
*
* @returns VBox status code.
* @param pSession The caller's session.
* @param u64Arg 64-bit integer argument.
* @param pReqHdr The request header. Input / Output. Optional.
*/
DECLEXPORT(int) TSTRTR0SemMutexSrvReqHandler(PSUPDRVSESSION pSession, uint32_t uOperation,
uint64_t u64Arg, PSUPR0SERVICEREQHDR pReqHdr)
{
NOREF(pSession);
if (!VALID_PTR(pReqHdr))
return VERR_INVALID_PARAMETER;
char *pszErr = (char *)(pReqHdr + 1);
size_t cchErr = pReqHdr->cbReq - sizeof(*pReqHdr);
if (cchErr < 32 || cchErr >= 0x10000)
return VERR_INVALID_PARAMETER;
*pszErr = '\0';
#define SET_ERROR(szFmt) do { if (!*pszErr) RTStrPrintf(pszErr, cchErr, "!" szFmt); } while (0)
#define SET_ERROR1(szFmt, a1) do { if (!*pszErr) RTStrPrintf(pszErr, cchErr, "!" szFmt, a1); } while (0)
#define SET_ERROR2(szFmt, a1, a2) do { if (!*pszErr) RTStrPrintf(pszErr, cchErr, "!" szFmt, a1, a2); } while (0)
#define SET_ERROR3(szFmt, a1, a2, a3) do { if (!*pszErr) RTStrPrintf(pszErr, cchErr, "!" szFmt, a1, a2, a3); } while (0)
#define CHECK_RC_BREAK(rc, rcExpect, szOp) \
if ((rc) != (rcExpect)) \
{ \
RTStrPrintf(pszErr, cchErr, "!%s -> %Rrc, expected %Rrc. line %u", szOp, rc, rcExpect, __LINE__); \
SUPR0Printf("%s -> %d, expected %d. line %u", szOp, rc, rcExpect, __LINE__); \
break; \
}
/*
* Set up test timeout (when applicable).
*/
if (u64Arg > 120)
{
SET_ERROR1("Timeout is too large (max 120): %lld", u64Arg);
return VINF_SUCCESS;
}
uint64_t const StartTS = RTTimeSystemMilliTS();
uint32_t const cMsMax = (uint32_t)u64Arg * 1000;
/*
* The big switch.
*/
RTSEMMUTEX hMtx;
int rc;
switch (uOperation)
{
case TSTRTR0SEMMUTEX_SANITY_OK:
break;
case TSTRTR0SEMMUTEX_SANITY_FAILURE:
SET_ERROR1("42failure42%1024s", "");
break;
case TSTRTR0SEMMUTEX_BASIC:
rc = RTSemMutexCreate(&hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexCreate");
do
{
/*
* The interruptible version first.
*/
/* simple request and release, polling. */
rc = RTSemMutexRequestNoResume(hMtx, 0);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequestNoResume");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease");
/* simple request and release, wait for ever. */
rc = RTSemMutexRequestNoResume(hMtx, RT_INDEFINITE_WAIT);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequestNoResume(indef_wait)");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease");
/* simple request and release, wait a tiny while. */
rc = RTSemMutexRequestNoResume(hMtx, 133);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequestNoResume(133)");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease");
/* nested request and release. */
rc = RTSemMutexRequestNoResume(hMtx, RT_INDEFINITE_WAIT);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequestNoResume#1");
rc = RTSemMutexRequestNoResume(hMtx, RT_INDEFINITE_WAIT);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequestNoResume#2");
rc = RTSemMutexRequestNoResume(hMtx, RT_INDEFINITE_WAIT);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequestNoResume#3");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease#3");
rc = RTSemMutexRequestNoResume(hMtx, RT_INDEFINITE_WAIT);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequestNoResume#3b");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease#3b");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease#2");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease#1");
/*
* The uninterruptible variant.
*/
/* simple request and release, polling. */
rc = RTSemMutexRequest(hMtx, 0);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequest");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease");
/* simple request and release, wait for ever. */
rc = RTSemMutexRequest(hMtx, RT_INDEFINITE_WAIT);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequest(indef_wait)");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease");
/* simple request and release, wait a tiny while. */
rc = RTSemMutexRequest(hMtx, 133);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequest(133)");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease");
/* nested request and release. */
rc = RTSemMutexRequest(hMtx, RT_INDEFINITE_WAIT);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequest#1");
rc = RTSemMutexRequest(hMtx, RT_INDEFINITE_WAIT);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequest#2");
rc = RTSemMutexRequest(hMtx, RT_INDEFINITE_WAIT);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequest#3");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease#3");
rc = RTSemMutexRequest(hMtx, RT_INDEFINITE_WAIT);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequest#3b");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease#3b");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease#2");
rc = RTSemMutexRelease(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease#1");
} while (false);
rc = RTSemMutexDestroy(hMtx);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexDestroy");
break;
case TSTRTR0SEMMUTEX_TEST2_SETUP:
case TSTRTR0SEMMUTEX_TEST3_SETUP:
case TSTRTR0SEMMUTEX_TEST4_SETUP:
rc = RTSemMutexCreate(&g_hMtxTest2);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexCreate");
break;
case TSTRTR0SEMMUTEX_TEST2_DO:
for (unsigned i = 0; i < 200; i++)
{
if (i & 1)
{
rc = RTSemMutexRequestNoResume(g_hMtxTest2, RT_INDEFINITE_WAIT);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequestNoResume(,indef_wait)");
}
else
{
rc = RTSemMutexRequestNoResume(g_hMtxTest2, 30000);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequestNoResume(,30000)");
}
RTThreadSleep(1);
rc = RTSemMutexRelease(g_hMtxTest2);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease");
if ((i % 16) == 15 && RTTimeSystemMilliTS() - StartTS >= cMsMax)
break;
}
break;
case TSTRTR0SEMMUTEX_TEST3_DO:
for (unsigned i = 0; i < 1000000; i++)
{
if (i & 1)
{
rc = RTSemMutexRequestNoResume(g_hMtxTest2, RT_INDEFINITE_WAIT);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequestNoResume(,indef_wait)");
}
else
{
rc = RTSemMutexRequestNoResume(g_hMtxTest2, 30000);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequestNoResume(,30000)");
}
rc = RTSemMutexRelease(g_hMtxTest2);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease");
if ((i % 256) == 255 && RTTimeSystemMilliTS() - StartTS >= cMsMax)
break;
}
break;
case TSTRTR0SEMMUTEX_TEST4_DO:
for (unsigned i = 0; i < 1024; i++)
{
rc = RTSemMutexRequestNoResume(g_hMtxTest2, (i % 32));
if (rc != VERR_TIMEOUT)
{
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRequestNoResume");
RTThreadSleep(1000);
rc = RTSemMutexRelease(g_hMtxTest2);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexRelease");
}
if (RTTimeSystemMilliTS() - StartTS >= cMsMax)
break;
}
break;
case TSTRTR0SEMMUTEX_TEST2_CLEANUP:
case TSTRTR0SEMMUTEX_TEST3_CLEANUP:
case TSTRTR0SEMMUTEX_TEST4_CLEANUP:
rc = RTSemMutexDestroy(g_hMtxTest2);
CHECK_RC_BREAK(rc, VINF_SUCCESS, "RTSemMutexCreate");
g_hMtxTest2 = NIL_RTSEMMUTEX;
break;
default:
SET_ERROR1("Unknown test #%d", uOperation);
break;
}
/* The error indicator is the '!' in the message buffer. */
return VINF_SUCCESS;
}
RTDECL(int) RTSemMutexRequestNoResumeDebug(RTSEMMUTEX hMutexSem, RTMSINTERVAL cMillies, RTHCUINTPTR uId, RT_SRC_POS_DECL)
{
// RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_DEBUG_API();
// return rtSemMutexRequestNoResume(hMutexSem, cMillies, &SrcPos);
return RTSemMutexRequestNoResume(hMutexSem, cMillies);
}
