mirror of https://github.com/mongodb/mongo
85 lines
2.3 KiB
C++
85 lines
2.3 KiB
C++
// threadedtests.cpp - Tests for threaded code
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//
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/**
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* Copyright (C) 2008 10gen Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "stdafx.h"
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#include <boost/thread.hpp>
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#include <boost/bind.hpp>
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#include "dbtests.h"
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namespace ThreadedTests {
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template <int nthreads_param=10>
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class ThreadedTest{
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public:
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virtual void setup() {} //optional
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virtual void subthread() = 0;
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virtual void validate() = 0;
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static const int nthreads = nthreads_param;
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void run(){
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setup();
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launch_subthreads(nthreads);
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validate();
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}
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virtual ~ThreadedTest() {}; // not necessary, but makes compilers happy
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private:
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void launch_subthreads(int remaining){
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if (!remaining) return;
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boost::thread athread(boost::bind(&ThreadedTest::subthread, this));
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launch_subthreads(remaining - 1);
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athread.join();
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}
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};
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// Tested with up to 30k threads
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class IsWrappingIntAtomic : public ThreadedTest<> {
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static const int iterations = 1000000;
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WrappingInt target;
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void subthread(){
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for(int i=0; i < iterations; i++){
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//target.x++; // verified to fail with this version
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target.atomicIncrement();
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}
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}
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void validate(){
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ASSERT_EQUALS(target.x , unsigned(nthreads * iterations));
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}
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};
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class All : public Suite {
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public:
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All() : Suite( "threading" ){
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}
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void setupTests(){
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add< IsWrappingIntAtomic >();
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}
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} myall;
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}
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