1 files changed, 158 insertions, 0 deletions
diff --git a/src/VBox/Runtime/testcase/tstRTReqPool.cpp b/src/VBox/Runtime/testcase/tstRTReqPool.cpp
new file mode 100644
index 00000000..fdc7f69d
--- /dev/null
+++ b/src/VBox/Runtime/testcase/tstRTReqPool.cpp
@@ -0,0 +1,158 @@
+/* $Id: tstRTReqPool.cpp $ */
+/** @file
+ * IPRT Testcase - Request Thread Pool.
+ */
+
+/*
+ * Copyright (C) 2011-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox 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.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+*   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);
+}