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/* $Id: tstRTReqPool.cpp $ */
/** @file
* IPRT Testcase - Request Thread Pool.
*/
/*
* Copyright (C) 2011-2019 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 <iprt/req.h>
#include <iprt/err.h>
#include <iprt/test.h>
#include <iprt/thread.h>
#include <iprt/time.h>
/*********************************************************************************************************************************
* 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);
}
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