/* $Id: tstRTReqPool.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */ /** @file * IPRT Testcase - Request Thread Pool. */ /* * Copyright (C) 2011-2020 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #include #include #include #include #include /********************************************************************************************************************************* * Global Variables * *********************************************************************************************************************************/ static RTTEST g_hTest = NIL_RTTEST; static DECLCALLBACK(int) NopCallback(void) { return VINF_SUCCESS; } static void test1(void) { RTTestISub("Basics"); RTREQPOOL hPool; uint32_t cMaxThreads = 10; RTTESTI_CHECK_RC_RETV(RTReqPoolCreate(cMaxThreads, RT_MS_1SEC, 6, 500, "test1", &hPool), VINF_SUCCESS); RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_THREAD_TYPE) == (uint64_t)RTTHREADTYPE_DEFAULT); RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MAX_THREADS) == 10); RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MIN_THREADS) > 1); RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MS_MIN_IDLE) == RT_MS_1SEC); RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MS_IDLE_SLEEP) == RT_MS_1SEC); RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_PUSH_BACK_THRESHOLD) == 6); RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_PUSH_BACK_MAX_MS) == 500); RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_PUSH_BACK_MIN_MS) < 500); RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MAX_FREE_REQUESTS) >= 10); RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MAX_FREE_REQUESTS) < 1024); RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_REQUESTS_FREE) == 0); RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_THREADS) == 0); uint32_t const cMinThreads = RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MIN_THREADS); uint32_t const cMaxFreeReqs = RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MAX_FREE_REQUESTS); PRTREQ hReq; RTTESTI_CHECK_RC_RETV(RTReqPoolAlloc(hPool, RTREQTYPE_INTERNAL, &hReq), VINF_SUCCESS); RTTESTI_CHECK(RTReqRetain(hReq) == 2); RTTESTI_CHECK(RTReqRelease(hReq) == 1); RTTESTI_CHECK_RC(RTReqGetStatus(hReq), VERR_RT_REQUEST_STATUS_STILL_PENDING); RTTESTI_CHECK(RTReqRelease(hReq) == 0); RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_REQUESTS_FREE) == 1); RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_REQUESTS_PROCESSED) == 0); RTTESTI_CHECK_RC(RTReqPoolCallWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)0), VINF_SUCCESS); RTTESTI_CHECK_RC(RTReqPoolCallWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)2), VINF_SUCCESS); RTTESTI_CHECK_RC(RTReqPoolCallWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)3), VINF_SUCCESS); RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_REQUESTS_PROCESSED) > 1); RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_THREADS) == 1); /* Use no wait requests to maximize the number of worker threads. */ RTTestISub("No wait requests"); for (unsigned i = 0; i < 32; i++) RTTESTI_CHECK_RC(RTReqPoolCallNoWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)100), VINF_SUCCESS); uint32_t cThreads = RTReqPoolGetStat(hPool, RTREQPOOLSTAT_THREADS); RTTestIValue("thread-count-1", cThreads, RTTESTUNIT_OCCURRENCES); RTTESTI_CHECK(cThreads >= cMinThreads); RTTESTI_CHECK(cThreads <= cMaxThreads); /* Check that idle thread shutdown kicks in. This means delaying a bit first. */ RTTestISub("Idle thread shutdown"); for (unsigned i = 0; i < 20; i++) { RTTESTI_CHECK_RC(RTReqPoolCallNoWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)10), VINF_SUCCESS); RTTESTI_CHECK_RC(RTReqPoolCallNoWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)10), VINF_SUCCESS); RTTESTI_CHECK_RC(RTReqPoolCallWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)100), VINF_SUCCESS); } RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_REQUESTS_FREE) == cMaxFreeReqs || cMaxFreeReqs > 32); /* Idle shutdown of worker threads should kick in now. */ uint32_t cThreads2 = RTReqPoolGetStat(hPool, RTREQPOOLSTAT_THREADS); RTTestIValue("thread-count-2", cThreads2, RTTESTUNIT_OCCURRENCES); RTTESTI_CHECK(cThreads2 >= cMinThreads); RTTESTI_CHECK(cThreads2 < cThreads || cThreads2 <= cMinThreads); RTTESTI_CHECK(RTReqPoolRelease(hPool) == 0); } static void test2(void) { RTTestISub("Simple Benchmark"); RTREQPOOL hPool; RTTESTI_CHECK_RC_RETV(RTReqPoolCreate(10, RT_MS_1SEC, 6, 500, "test1", &hPool), VINF_SUCCESS); uint64_t NsTsStart = RTTimeNanoTS(); for (unsigned i = 0; i < 10000; i++) RTTESTI_CHECK_RC_BREAK(RTReqPoolCallWait(hPool, (PFNRT)NopCallback, 0), VINF_SUCCESS); uint64_t cNsElapsed = RTTimeNanoTS() - NsTsStart; RTTestIValue("total time", cNsElapsed, RTTESTUNIT_NS); RTTestIValue("per call", cNsElapsed / 10000, RTTESTUNIT_NS_PER_CALL); RTTestIValue("total processing time", RTReqPoolGetStat(hPool, RTREQPOOLSTAT_NS_AVERAGE_REQ_PROCESSING), RTTESTUNIT_NS_PER_CALL); RTTESTI_CHECK(RTReqPoolRelease(hPool) == 0); } int main() { RTEXITCODE rcExit = RTTestInitAndCreate("tstRTReqPool", &g_hTest); if (rcExit != RTEXITCODE_SUCCESS) return rcExit; RTTestBanner(g_hTest); test1(); if (RTTestIErrorCount() == 0) { test2(); } return RTTestSummaryAndDestroy(g_hTest); }