/**
* Do-once callback that initializes the read/write semaphore and registers
* the built-in interpreters.
*
* @returns IPRT status code.
* @param pvUser1 NULL.
* @param pvUser2 NULL.
*/
static DECLCALLBACK(int) rtDbgModInitOnce(void *pvUser1, void *pvUser2)
{
/*
* Create the semaphore and string cache.
*/
int rc = RTSemRWCreate(&g_hDbgModRWSem);
AssertRCReturn(rc, rc);
rc = RTStrCacheCreate(&g_hDbgModStrCache, "RTDBGMOD");
if (RT_SUCCESS(rc))
{
/*
* Register the interpreters.
*/
rc = rtDbgModDebugInterpreterRegister(&g_rtDbgModVtDbgNm);
if (RT_SUCCESS(rc))
{
/*
* Finally, register the IPRT cleanup callback.
*/
rc = RTTermRegisterCallback(rtDbgModTermCallback, NULL);
if (RT_SUCCESS(rc))
return VINF_SUCCESS;
/* bail out: use the termination callback. */
}
}
else
g_hDbgModStrCache = NIL_RTSTRCACHE;
rtDbgModTermCallback(RTTERMREASON_UNLOAD, 0, NULL);
return rc;
}
/**
* Check hash and memory performance.
*/
static void tst2(void)
{
RTTestISub("Hash performance");
/*
* Generate test strings using a specific pseudo random generator.
*/
size_t cbStrings = 0;
char *apszTests[8192];
RTRAND hRand;
RTTESTI_CHECK_RC_RETV(RTRandAdvCreateParkMiller(&hRand), VINF_SUCCESS);
for (uint32_t i = 0; i < 8192; i++)
{
char szBuf[8192];
uint32_t cch = RTRandAdvU32Ex(hRand, 3, sizeof(szBuf) - 1);
RTRandAdvBytes(hRand, szBuf, cch);
szBuf[cch] = '\0';
for (uint32_t off = 0; off < cch; off++)
{
uint8_t b = szBuf[off];
b &= 0x7f;
if (!b || b == 0x7f)
b = ' ';
else if (RTLocCIsCntrl(b) && b != '\n' && b != '\r' && b != '\t')
b += 0x30;
szBuf[off] = b;
}
apszTests[i] = (char *)RTMemDup(szBuf, cch + 1);
RTTESTI_CHECK_RETV(apszTests[i] != NULL);
cbStrings += cch + 1;
}
RTRandAdvDestroy(hRand);
RTTestIValue("Average string", cbStrings / RT_ELEMENTS(apszTests), RTTESTUNIT_BYTES);
/*
* Test new insertion first time around.
*/
RTSTRCACHE hStrCache;
RTTESTI_CHECK_RC_RETV(RTStrCacheCreate(&hStrCache, "hash performance"), VINF_SUCCESS);
uint64_t nsTsStart = RTTimeNanoTS();
for (uint32_t i = 0; i < RT_ELEMENTS(apszTests); i++)
RTTESTI_CHECK_RETV(RTStrCacheEnter(hStrCache, apszTests[i]) != NULL);
uint64_t cNsElapsed = RTTimeNanoTS() - nsTsStart;
RTTestIValue("First insert", cNsElapsed / RT_ELEMENTS(apszTests), RTTESTUNIT_NS_PER_CALL);
/*
* Insert existing strings.
*/
nsTsStart = RTTimeNanoTS();
for (uint32_t i = 0; i < 8192; i++)
RTTESTI_CHECK(RTStrCacheEnter(hStrCache, apszTests[i]) != NULL);
cNsElapsed = RTTimeNanoTS() - nsTsStart;
RTTestIValue("Duplicate insert", cNsElapsed / RT_ELEMENTS(apszTests), RTTESTUNIT_NS_PER_CALL);
tstShowStats(hStrCache);
RTTESTI_CHECK_RC(RTStrCacheDestroy(hStrCache), VINF_SUCCESS);
}
int main()
{
RTTEST hTest;
int rc = RTTestInitAndCreate("tstRTStrCache", &hTest);
if (rc)
return rc;
RTTestBanner(hTest);
/*
* Smoke tests using first the default and then a custom pool.
*/
RTTestSub(hTest, "Smoke test on default cache");
tst1(RTSTRCACHE_DEFAULT);
RTTestSub(hTest, "Smoke test on custom cache");
RTSTRCACHE hStrCache;
RTTESTI_CHECK_RC(rc = RTStrCacheCreate(&hStrCache, "test 2a"), VINF_SUCCESS);
if (RT_SUCCESS(rc))
RTTESTI_CHECK_RC(rc = RTStrCacheDestroy(hStrCache), VINF_SUCCESS);
RTTESTI_CHECK_RC(rc = RTStrCacheDestroy(NIL_RTSTRCACHE), VINF_SUCCESS);
RTTESTI_CHECK_RC(rc = RTStrCacheDestroy(RTSTRCACHE_DEFAULT), VINF_SUCCESS);
RTTESTI_CHECK_RC(rc = RTStrCacheDestroy(RTSTRCACHE_DEFAULT), VINF_SUCCESS);
RTTESTI_CHECK_RC(rc = RTStrCacheCreate(&hStrCache, "test 2b"), VINF_SUCCESS);
if (RT_SUCCESS(rc))
{
tst1(hStrCache);
RTTESTI_CHECK_RC(rc = RTStrCacheDestroy(hStrCache), VINF_SUCCESS);
}
/*
* Cache performance on relatively real world examples.
*/
tst2();
/*
* Summary.
*/
return RTTestSummaryAndDestroy(hTest);
}
