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Copy paththreadhandler.cpp
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245 lines (201 loc) · 6.21 KB
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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2015 Daniel Marjamäki and Cppcheck team.
*
* 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, either version 3 of the License, or
* (at your option) any later version.
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include <QObject>
#include <QFileInfo>
#include <QStringList>
#include <QDebug>
#include "common.h"
#include "settings.h"
#include "checkthread.h"
#include "threadhandler.h"
#include "resultsview.h"
ThreadHandler::ThreadHandler(QObject *parent) :
QObject(parent),
mScanDuration(0),
mRunningThreadCount(0)
{
SetThreadCount(1);
}
ThreadHandler::~ThreadHandler()
{
RemoveThreads();
}
void ThreadHandler::ClearFiles()
{
mLastFiles.clear();
mResults.ClearFiles();
}
void ThreadHandler::SetFiles(const QStringList &files)
{
mResults.SetFiles(files);
mLastFiles = files;
}
void ThreadHandler::Check(const Settings &settings, bool recheck)
{
if (recheck && mRunningThreadCount == 0) {
// only recheck changed files
mResults.SetFiles(GetReCheckFiles());
}
if (mResults.GetFileCount() == 0 || mRunningThreadCount > 0 || settings._jobs == 0) {
qDebug() << "Can't start checking if there's no files to check or if check is in progress.";
emit Done();
return;
}
SetThreadCount(settings._jobs);
mRunningThreadCount = mThreads.size();
if (mResults.GetFileCount() < mRunningThreadCount) {
mRunningThreadCount = mResults.GetFileCount();
}
for (int i = 0; i < mRunningThreadCount; i++) {
mThreads[i]->Check(settings);
}
// Date and time when checking starts..
mCheckStartTime = QDateTime::currentDateTime();
mTime.start();
}
bool ThreadHandler::IsChecking() const
{
return mRunningThreadCount > 0;
}
void ThreadHandler::SetThreadCount(const int count)
{
if (mRunningThreadCount > 0 ||
count == mThreads.size() ||
count <= 0) {
return;
}
//Remove unused old threads
RemoveThreads();
//Create new threads
for (int i = mThreads.size(); i < count; i++) {
mThreads << new CheckThread(mResults);
connect(mThreads.last(), SIGNAL(Done()),
this, SLOT(ThreadDone()));
connect(mThreads.last(), SIGNAL(FileChecked(const QString &)),
&mResults, SLOT(FileChecked(const QString &)));
}
}
void ThreadHandler::RemoveThreads()
{
for (int i = 0; i < mThreads.size(); i++) {
mThreads[i]->terminate();
disconnect(mThreads.last(), SIGNAL(Done()),
this, SLOT(ThreadDone()));
disconnect(mThreads.last(), SIGNAL(FileChecked(const QString &)),
&mResults, SLOT(FileChecked(const QString &)));
delete mThreads[i];
}
mThreads.clear();
}
void ThreadHandler::ThreadDone()
{
mRunningThreadCount--;
if (mRunningThreadCount == 0) {
emit Done();
mScanDuration = mTime.elapsed();
// Set date/time used by the recheck
if (!mCheckStartTime.isNull()) {
mLastCheckTime = mCheckStartTime;
mCheckStartTime = QDateTime();
}
}
}
void ThreadHandler::Stop()
{
mCheckStartTime = QDateTime();
for (int i = 0; i < mThreads.size(); i++) {
mThreads[i]->stop();
}
}
void ThreadHandler::Initialize(ResultsView *view)
{
connect(&mResults, SIGNAL(Progress(int, const QString&)),
view, SLOT(Progress(int, const QString&)));
connect(&mResults, SIGNAL(Error(const ErrorItem &)),
view, SLOT(Error(const ErrorItem &)));
connect(&mResults, SIGNAL(Log(const QString &)),
parent(), SLOT(Log(const QString &)));
connect(&mResults, SIGNAL(DebugError(const ErrorItem &)),
parent(), SLOT(DebugError(const ErrorItem &)));
}
void ThreadHandler::LoadSettings(QSettings &settings)
{
SetThreadCount(settings.value(SETTINGS_CHECK_THREADS, 1).toInt());
}
void ThreadHandler::SaveSettings(QSettings &settings) const
{
settings.setValue(SETTINGS_CHECK_THREADS, mThreads.size());
}
bool ThreadHandler::HasPreviousFiles() const
{
return !mLastFiles.isEmpty();
}
int ThreadHandler::GetPreviousFilesCount() const
{
return mLastFiles.size();
}
int ThreadHandler::GetPreviousScanDuration() const
{
return mScanDuration;
}
QStringList ThreadHandler::GetReCheckFiles() const
{
if (mLastCheckTime.isNull())
return mLastFiles;
std::set<QString> modified;
std::set<QString> unmodified;
QStringList files;
for (int i = 0; i < mLastFiles.size(); ++i) {
if (NeedsReCheck(mLastFiles[i], modified, unmodified))
files.push_back(mLastFiles[i]);
}
return files;
}
bool ThreadHandler::NeedsReCheck(const QString &filename, std::set<QString> &modified, std::set<QString> &unmodified) const
{
if (modified.find(filename) != modified.end())
return true;
if (unmodified.find(filename) != unmodified.end())
return false;
if (QFileInfo(filename).lastModified() > mLastCheckTime) {
return true;
}
// Parse included files recursively
QFile f(filename);
if (!f.open(QIODevice::ReadOnly | QIODevice::Text))
return false;
// prevent recursion..
unmodified.insert(filename);
QTextStream in(&f);
while (!in.atEnd()) {
QString line = in.readLine();
if (line.startsWith("#include \"")) {
line.remove(0,10);
int i = line.indexOf("\"");
if (i > 0) {
line.remove(i,line.length());
line = QFileInfo(filename).absolutePath() + "/" + line;
if (NeedsReCheck(line, modified, unmodified)) {
modified.insert(line);
return true;
}
}
}
}
return false;
}