1fc76c4dfc
Change-Id: I0578e046b8d97b076ca638912740d548453a9a04 Reviewed-on: https://gerrit.libreoffice.org/35916 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <comphelper/threadpool.hxx>
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#include "cppunit/TestAssert.h"
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#include "cppunit/TestFixture.h"
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#include "cppunit/extensions/HelperMacros.h"
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#include "cppunit/plugin/TestPlugIn.h"
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#include <stdlib.h>
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#include <thread>
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class ThreadPoolTest : public CppUnit::TestFixture
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{
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public:
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void testPreferredConcurrency();
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CPPUNIT_TEST_SUITE(ThreadPoolTest);
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CPPUNIT_TEST(testPreferredConcurrency);
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CPPUNIT_TEST_SUITE_END();
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};
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void ThreadPoolTest::testPreferredConcurrency() {
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// Check default.
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auto nThreads = comphelper::ThreadPool::getPreferredConcurrency();
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sal_Int32 nExpected = 4; // UTs are capped to 4.
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CPPUNIT_ASSERT_MESSAGE("Expected no more than 4 threads", nExpected >= nThreads);
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#ifndef _WIN32
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// The result should be cached, so this should change anything.
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nThreads = std::thread::hardware_concurrency() * 2;
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setenv("MAX_CONCURRENCY", std::to_string(nThreads).c_str(), true);
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nThreads = comphelper::ThreadPool::getPreferredConcurrency();
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CPPUNIT_ASSERT_MESSAGE("Expected no more than hardware threads",
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nThreads <= (sal_Int32)std::thread::hardware_concurrency());
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// Revert and check. Again, nothing should change.
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unsetenv("MAX_CONCURRENCY");
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nThreads = comphelper::ThreadPool::getPreferredConcurrency();
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CPPUNIT_ASSERT_MESSAGE("Expected no more than 4 threads", nExpected >= nThreads);
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#endif
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}
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CPPUNIT_TEST_SUITE_REGISTRATION(ThreadPoolTest);
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CPPUNIT_PLUGIN_IMPLEMENT();
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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