1 | /* $Id: tstRTReqPool.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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2 | /** @file
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3 | * IPRT Testcase - Request Thread Pool.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2011-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * The contents of this file may alternatively be used under the terms
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26 | * of the Common Development and Distribution License Version 1.0
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27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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28 | * in the VirtualBox distribution, in which case the provisions of the
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29 | * CDDL are applicable instead of those of the GPL.
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30 | *
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31 | * You may elect to license modified versions of this file under the
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32 | * terms and conditions of either the GPL or the CDDL or both.
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33 | *
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34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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35 | */
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36 |
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37 |
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38 | /*********************************************************************************************************************************
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39 | * Header Files *
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40 | *********************************************************************************************************************************/
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41 | #include <iprt/req.h>
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42 |
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43 | #include <iprt/err.h>
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44 | #include <iprt/test.h>
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45 | #include <iprt/thread.h>
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46 | #include <iprt/time.h>
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47 |
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48 |
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49 |
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50 | /*********************************************************************************************************************************
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51 | * Global Variables *
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52 | *********************************************************************************************************************************/
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53 | static RTTEST g_hTest = NIL_RTTEST;
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54 |
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55 |
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56 | static DECLCALLBACK(int) NopCallback(void)
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57 | {
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58 | return VINF_SUCCESS;
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59 | }
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60 |
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61 | static void test1(void)
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62 | {
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63 | RTTestISub("Basics");
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64 | RTREQPOOL hPool;
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65 | uint32_t cMaxThreads = 10;
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66 | RTTESTI_CHECK_RC_RETV(RTReqPoolCreate(cMaxThreads, RT_MS_1SEC, 6, 500, "test1", &hPool), VINF_SUCCESS);
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67 | RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_THREAD_TYPE) == (uint64_t)RTTHREADTYPE_DEFAULT);
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68 | RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MAX_THREADS) == 10);
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69 | RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MIN_THREADS) > 1);
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70 | RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MS_MIN_IDLE) == RT_MS_1SEC);
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71 | RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MS_IDLE_SLEEP) == RT_MS_1SEC);
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72 | RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_PUSH_BACK_THRESHOLD) == 6);
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73 | RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_PUSH_BACK_MAX_MS) == 500);
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74 | RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_PUSH_BACK_MIN_MS) < 500);
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75 | RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MAX_FREE_REQUESTS) >= 10);
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76 | RTTESTI_CHECK(RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MAX_FREE_REQUESTS) < 1024);
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77 |
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78 | RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_REQUESTS_FREE) == 0);
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79 | RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_THREADS) == 0);
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80 | uint32_t const cMinThreads = RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MIN_THREADS);
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81 | uint32_t const cMaxFreeReqs = RTReqPoolGetCfgVar(hPool, RTREQPOOLCFGVAR_MAX_FREE_REQUESTS);
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82 |
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83 | PRTREQ hReq;
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84 | RTTESTI_CHECK_RC_RETV(RTReqPoolAlloc(hPool, RTREQTYPE_INTERNAL, &hReq), VINF_SUCCESS);
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85 | RTTESTI_CHECK(RTReqRetain(hReq) == 2);
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86 | RTTESTI_CHECK(RTReqRelease(hReq) == 1);
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87 | RTTESTI_CHECK_RC(RTReqGetStatus(hReq), VERR_RT_REQUEST_STATUS_STILL_PENDING);
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88 | RTTESTI_CHECK(RTReqRelease(hReq) == 0);
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89 | RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_REQUESTS_FREE) == 1);
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90 |
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91 | RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_REQUESTS_PROCESSED) == 0);
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92 | RTTESTI_CHECK_RC(RTReqPoolCallWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)0), VINF_SUCCESS);
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93 | RTTESTI_CHECK_RC(RTReqPoolCallWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)2), VINF_SUCCESS);
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94 | RTTESTI_CHECK_RC(RTReqPoolCallWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)3), VINF_SUCCESS);
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95 | RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_REQUESTS_PROCESSED) > 1);
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96 | RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_THREADS) == 1);
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97 |
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98 | /* Use no wait requests to maximize the number of worker threads. */
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99 | RTTestISub("No wait requests");
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100 | for (unsigned i = 0; i < 32; i++)
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101 | RTTESTI_CHECK_RC(RTReqPoolCallNoWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)100), VINF_SUCCESS);
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102 | uint32_t cThreads = RTReqPoolGetStat(hPool, RTREQPOOLSTAT_THREADS);
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103 | RTTestIValue("thread-count-1", cThreads, RTTESTUNIT_OCCURRENCES);
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104 | RTTESTI_CHECK(cThreads >= cMinThreads);
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105 | RTTESTI_CHECK(cThreads <= cMaxThreads);
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106 |
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107 | /* Check that idle thread shutdown kicks in. This means delaying a bit first. */
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108 | RTTestISub("Idle thread shutdown");
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109 | for (unsigned i = 0; i < 20; i++)
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110 | {
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111 | RTTESTI_CHECK_RC(RTReqPoolCallNoWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)10), VINF_SUCCESS);
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112 | RTTESTI_CHECK_RC(RTReqPoolCallNoWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)10), VINF_SUCCESS);
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113 | RTTESTI_CHECK_RC(RTReqPoolCallWait(hPool, (PFNRT)RTThreadSleep, 1, (RTMSINTERVAL)100), VINF_SUCCESS);
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114 | }
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115 | RTTESTI_CHECK(RTReqPoolGetStat(hPool, RTREQPOOLSTAT_REQUESTS_FREE) == cMaxFreeReqs || cMaxFreeReqs > 32);
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116 |
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117 | /* Idle shutdown of worker threads should kick in now. */
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118 | uint32_t cThreads2 = RTReqPoolGetStat(hPool, RTREQPOOLSTAT_THREADS);
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119 | RTTestIValue("thread-count-2", cThreads2, RTTESTUNIT_OCCURRENCES);
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120 | RTTESTI_CHECK(cThreads2 >= cMinThreads);
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121 | RTTESTI_CHECK(cThreads2 < cThreads || cThreads2 <= cMinThreads);
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122 |
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123 | RTTESTI_CHECK(RTReqPoolRelease(hPool) == 0);
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124 | }
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125 |
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126 |
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127 | static void test2(void)
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128 | {
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129 | RTTestISub("Simple Benchmark");
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130 |
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131 | RTREQPOOL hPool;
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132 | RTTESTI_CHECK_RC_RETV(RTReqPoolCreate(10, RT_MS_1SEC, 6, 500, "test1", &hPool), VINF_SUCCESS);
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133 | uint64_t NsTsStart = RTTimeNanoTS();
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134 | for (unsigned i = 0; i < 10000; i++)
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135 | RTTESTI_CHECK_RC_BREAK(RTReqPoolCallWait(hPool, (PFNRT)NopCallback, 0), VINF_SUCCESS);
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136 | uint64_t cNsElapsed = RTTimeNanoTS() - NsTsStart;
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137 | RTTestIValue("total time", cNsElapsed, RTTESTUNIT_NS);
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138 | RTTestIValue("per call", cNsElapsed / 10000, RTTESTUNIT_NS_PER_CALL);
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139 | RTTestIValue("total processing time", RTReqPoolGetStat(hPool, RTREQPOOLSTAT_NS_AVERAGE_REQ_PROCESSING), RTTESTUNIT_NS_PER_CALL);
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140 |
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141 | RTTESTI_CHECK(RTReqPoolRelease(hPool) == 0);
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142 | }
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143 |
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144 |
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145 | int main()
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146 | {
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147 | RTEXITCODE rcExit = RTTestInitAndCreate("tstRTReqPool", &g_hTest);
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148 | if (rcExit != RTEXITCODE_SUCCESS)
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149 | return rcExit;
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150 | RTTestBanner(g_hTest);
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151 |
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152 | test1();
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153 | if (RTTestIErrorCount() == 0)
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154 | {
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155 | test2();
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156 | }
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157 | return RTTestSummaryAndDestroy(g_hTest);
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158 | }
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