CMake/Source/CTest/cmCTestMultiProcessHandler.cxx

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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
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#include "cmCTestMultiProcessHandler.h"
#include "cmProcess.h"
#include "cmStandardIncludes.h"
#include "cmCTest.h"
#include "cmSystemTools.h"
#include <stdlib.h>
#include <stack>
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cmCTestMultiProcessHandler::cmCTestMultiProcessHandler()
{
this->ParallelLevel = 1;
this->Completed = 0;
this->RunningCount = 0;
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}
cmCTestMultiProcessHandler::~cmCTestMultiProcessHandler()
{
}
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// Set the tests
void
cmCTestMultiProcessHandler::SetTests(TestMap& tests,
PropertiesMap& properties)
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{
this->Tests = tests;
this->Properties = properties;
this->Total = this->Tests.size();
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// set test run map to false for all
for(TestMap::iterator i = this->Tests.begin();
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i != this->Tests.end(); ++i)
{
this->TestRunningMap[i->first] = false;
this->TestFinishMap[i->first] = false;
}
if(!this->CTest->GetShowOnly())
{
this->ReadCostData();
this->CreateTestCostList();
}
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}
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// Set the max number of tests that can be run at the same time.
void cmCTestMultiProcessHandler::SetParallelLevel(size_t level)
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{
this->ParallelLevel = level < 1 ? 1 : level;
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}
//---------------------------------------------------------
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void cmCTestMultiProcessHandler::RunTests()
{
this->CheckResume();
if(!this->CheckCycles())
{
return;
}
this->TestHandler->SetMaxIndex(this->FindMaxIndex());
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this->StartNextTests();
while(this->Tests.size() != 0)
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{
this->CheckOutput();
this->StartNextTests();
}
// let all running tests finish
while(this->CheckOutput())
{
}
this->MarkFinished();
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}
//---------------------------------------------------------
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void cmCTestMultiProcessHandler::StartTestProcess(int test)
{
cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT, "test " << test << "\n");
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this->TestRunningMap[test] = true; // mark the test as running
// now remove the test itself
this->EraseTest(test);
cmCTestRunTest* testRun = new cmCTestRunTest(this->TestHandler);
testRun->SetIndex(test);
testRun->SetTestProperties(this->Properties[test]);
std::string current_dir = cmSystemTools::GetCurrentWorkingDirectory();
cmSystemTools::ChangeDirectory(this->Properties[test]->Directory.c_str());
if(testRun->StartTest(this->Total))
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{
this->RunningTests.insert(testRun);
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}
else
{
this->Completed++;
this->TestFinishMap[test] = true;
this->TestRunningMap[test] = false;
this->RunningCount -= GetProcessorsUsed(test);
testRun->EndTest(this->Completed, this->Total, false);
this->Failed->push_back(this->Properties[test]->Name);
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}
cmSystemTools::ChangeDirectory(current_dir.c_str());
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}
//---------------------------------------------------------
void cmCTestMultiProcessHandler::EraseTest(int test)
{
this->Tests.erase(test);
for(TestCostMap::iterator i = this->TestCosts.begin();
i != this->TestCosts.end(); ++i)
{
if(i->second.find(test) != i->second.end())
{
i->second.erase(test);
return;
}
}
}
//---------------------------------------------------------
inline size_t cmCTestMultiProcessHandler::GetProcessorsUsed(int test)
{
size_t processors =
static_cast<int>(this->Properties[test]->Processors);
//If this is set to run serially, it must run alone.
//Also, if processors setting is set higher than the -j
//setting, we default to using all of the process slots.
if(this->Properties[test]->RunSerial
|| processors > this->ParallelLevel)
{
processors = this->ParallelLevel;
}
return processors;
}
//---------------------------------------------------------
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bool cmCTestMultiProcessHandler::StartTest(int test)
{
// copy the depend tests locally because when
// a test is finished it will be removed from the depend list
// and we don't want to be iterating a list while removing from it
TestSet depends = this->Tests[test];
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size_t totalDepends = depends.size();
if(totalDepends)
{
for(TestSet::const_iterator i = depends.begin();
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i != depends.end(); ++i)
{
// if the test is not already running then start it
if(!this->TestRunningMap[*i])
{
// this test might be finished, but since
// this is a copy of the depend map we might
// still have it
if(!this->TestFinishMap[*i])
{
// only start one test in this function
return this->StartTest(*i);
}
else
{
// the depend has been and finished
totalDepends--;
}
}
}
}
// if there are no depends left then run this test
if(totalDepends == 0)
{
this->StartTestProcess(test);
return true;
}
// This test was not able to start because it is waiting
// on depends to run
return false;
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}
//---------------------------------------------------------
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void cmCTestMultiProcessHandler::StartNextTests()
{
size_t numToStart = this->ParallelLevel - this->RunningCount;
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if(numToStart == 0)
{
return;
}
for(TestCostMap::reverse_iterator i = this->TestCosts.rbegin();
i != this->TestCosts.rend(); ++i)
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{
TestSet tests = i->second; //copy the test set
for(TestSet::iterator test = tests.begin();
test != tests.end(); ++test)
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{
//in case this test has already been started due to dependency
if(this->TestRunningMap[*test] || this->TestFinishMap[*test])
{
continue;
}
size_t processors = GetProcessorsUsed(*test);
if(processors > numToStart)
{
return;
}
if(this->StartTest(*test))
{
numToStart -= processors;
this->RunningCount += processors;
}
else
{
cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT, std::endl
<< "Test did not start waiting on depends to finish: "
<< *test << "\n");
}
if(numToStart == 0)
{
return;
}
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}
}
}
//---------------------------------------------------------
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bool cmCTestMultiProcessHandler::CheckOutput()
{
// no more output we are done
if(this->RunningTests.size() == 0)
{
return false;
}
std::vector<cmCTestRunTest*> finished;
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std::string out, err;
for(std::set<cmCTestRunTest*>::const_iterator i = this->RunningTests.begin();
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i != this->RunningTests.end(); ++i)
{
cmCTestRunTest* p = *i;
if(!p->CheckOutput())
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{
finished.push_back(p);
}
}
for( std::vector<cmCTestRunTest*>::iterator i = finished.begin();
i != finished.end(); ++i)
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{
this->Completed++;
cmCTestRunTest* p = *i;
int test = p->GetIndex();
if(p->EndTest(this->Completed, this->Total, true))
{
this->Passed->push_back(p->GetTestProperties()->Name);
}
else
{
this->Failed->push_back(p->GetTestProperties()->Name);
}
for(TestMap::iterator j = this->Tests.begin();
j != this->Tests.end(); ++j)
{
j->second.erase(test);
}
this->TestFinishMap[test] = true;
this->TestRunningMap[test] = false;
this->RunningTests.erase(p);
this->WriteCheckpoint(test);
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this->WriteCostData(test, static_cast<float>(
p->GetTestResults().ExecutionTime));
this->RunningCount -= GetProcessorsUsed(test);
delete p;
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}
return true;
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}
//---------------------------------------------------------
void cmCTestMultiProcessHandler::ReadCostData()
{
std::string fname = this->CTest->GetBinaryDir()
+ "/Testing/Temporary/CTestCostData.txt";
if(cmSystemTools::FileExists(fname.c_str(), true)
&& this->ParallelLevel > 1)
{
std::ifstream fin;
fin.open(fname.c_str());
std::string line;
while(std::getline(fin, line))
{
std::vector<cmsys::String> parts =
cmSystemTools::SplitString(line.c_str(), ' ');
int index = atoi(parts[0].c_str());
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float cost = static_cast<float>(atof(parts[1].c_str()));
if(this->Properties[index] && this->Properties[index]->Cost == 0)
{
this->Properties[index]->Cost = cost;
}
}
fin.close();
}
cmSystemTools::RemoveFile(fname.c_str());
}
//---------------------------------------------------------
void cmCTestMultiProcessHandler::CreateTestCostList()
{
for(TestMap::iterator i = this->Tests.begin();
i != this->Tests.end(); ++i)
{
this->TestCosts[this->Properties[i->first]->Cost].insert(i->first);
}
}
//---------------------------------------------------------
void cmCTestMultiProcessHandler::WriteCostData(int index, float cost)
{
std::string fname = this->CTest->GetBinaryDir()
+ "/Testing/Temporary/CTestCostData.txt";
std::fstream fout;
fout.open(fname.c_str(), std::ios::app);
fout << index << " " << cost << "\n";
fout.close();
}
//---------------------------------------------------------
void cmCTestMultiProcessHandler::WriteCheckpoint(int index)
{
std::string fname = this->CTest->GetBinaryDir()
+ "/Testing/Temporary/CTestCheckpoint.txt";
std::fstream fout;
fout.open(fname.c_str(), std::ios::app);
fout << index << "\n";
fout.close();
}
//---------------------------------------------------------
void cmCTestMultiProcessHandler::MarkFinished()
{
std::string fname = this->CTest->GetBinaryDir()
+ "/Testing/Temporary/CTestCheckpoint.txt";
cmSystemTools::RemoveFile(fname.c_str());
}
//---------------------------------------------------------
//For ShowOnly mode
void cmCTestMultiProcessHandler::PrintTestList()
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{
this->TestHandler->SetMaxIndex(this->FindMaxIndex());
int count = 0;
for (PropertiesMap::iterator it = this->Properties.begin();
it != this->Properties.end(); ++it)
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{
count++;
cmCTestTestHandler::cmCTestTestProperties& p = *it->second;
//push working dir
std::string current_dir = cmSystemTools::GetCurrentWorkingDirectory();
cmSystemTools::ChangeDirectory(p.Directory.c_str());
cmCTestRunTest testRun(this->TestHandler);
testRun.SetIndex(p.Index);
testRun.SetTestProperties(&p);
testRun.ComputeArguments(); //logs the command in verbose mode
if (this->TestHandler->MemCheck)
{
cmCTestLog(this->CTest, HANDLER_OUTPUT, " Memory Check");
}
else
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{
cmCTestLog(this->CTest, HANDLER_OUTPUT, " Test");
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}
cmOStringStream indexStr;
indexStr << " #" << p.Index << ":";
cmCTestLog(this->CTest, HANDLER_OUTPUT,
std::setw(3 + getNumWidth(this->TestHandler->GetMaxIndex()))
<< indexStr.str().c_str());
cmCTestLog(this->CTest, HANDLER_OUTPUT, " ");
cmCTestLog(this->CTest, HANDLER_OUTPUT, p.Name.c_str() << std::endl);
//pop working dir
cmSystemTools::ChangeDirectory(current_dir.c_str());
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}
cmCTestLog(this->CTest, HANDLER_OUTPUT, std::endl << "Total Tests: "
<< this->Total << std::endl);
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}
//---------------------------------------------------------
void cmCTestMultiProcessHandler::CheckResume()
{
std::string fname = this->CTest->GetBinaryDir()
+ "/Testing/Temporary/CTestCheckpoint.txt";
if(this->CTest->GetFailover())
{
if(cmSystemTools::FileExists(fname.c_str(), true))
{
*this->TestHandler->LogFile << "Resuming previously interrupted test set"
<< std::endl
<< "----------------------------------------------------------"
<< std::endl;
std::ifstream fin;
fin.open(fname.c_str());
std::string line;
while(std::getline(fin, line))
{
int index = atoi(line.c_str());
this->RemoveTest(index);
}
fin.close();
}
}
else if(cmSystemTools::FileExists(fname.c_str(), true))
{
cmSystemTools::RemoveFile(fname.c_str());
}
}
//---------------------------------------------------------
void cmCTestMultiProcessHandler::RemoveTest(int index)
{
this->EraseTest(index);
this->Properties.erase(index);
this->TestRunningMap[index] = false;
this->TestFinishMap[index] = true;
this->Completed++;
}
//---------------------------------------------------------
int cmCTestMultiProcessHandler::FindMaxIndex()
{
int max = 0;
cmCTestMultiProcessHandler::TestMap::iterator i = this->Tests.begin();
for(; i != this->Tests.end(); ++i)
{
if(i->first > max)
{
max = i->first;
}
}
return max;
}
//Returns true if no cycles exist in the dependency graph
bool cmCTestMultiProcessHandler::CheckCycles()
{
cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
"Checking test dependency graph..." << std::endl);
for(TestMap::iterator it = this->Tests.begin();
it != this->Tests.end(); ++it)
{
//DFS from each element to itself
std::stack<int> s;
std::vector<int> visited;
s.push(it->first);
visited.push_back(it->first);
while(!s.empty())
{
int test = s.top();
s.pop();
for(TestSet::iterator d = this->Tests[test].begin();
d != this->Tests[test].end(); ++d)
{
s.push(*d);
for(std::vector<int>::iterator v = visited.begin();
v != visited.end(); ++v)
{
if(*v == *d)
{
//cycle exists
cmCTestLog(this->CTest, ERROR_MESSAGE, "Error: a cycle exists in "
"the test dependency graph for the test \""
<< this->Properties[*d]->Name << "\"." << std::endl
<< "Please fix the cycle and run ctest again." << std::endl);
return false;
}
}
visited.push_back(*d);
}
visited.pop_back();
}
}
return true;
}