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CrashHandler: Generalize for other clients

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* Put the binary into the libexec path
* Check for process origin more explicitly
* Allow providing the application name
* Allow disabling the restart action

Change-Id: Ide7132215d7c251ce486daab60ac680de3c9f9a6
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
This commit is contained in:
Nikolai Kosjar
2016-10-25 12:29:52 +02:00
parent a1b0302014
commit 69555ec851
12 changed files with 103 additions and 35 deletions
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2
src/app/app.pro
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@@ -8,6 +8,8 @@ DESTDIR = $$IDE_APP_PATH
VERSION = $$QTCREATOR_VERSION
QT -= testlib
DEFINES += IDE_LIBEXEC_PATH=\\\"$$IDE_LIBEXEC_PATH\\\"
HEADERS += ../tools/qtcreatorcrashhandler/crashhandlersetup.h
SOURCES += main.cpp ../tools/qtcreatorcrashhandler/crashhandlersetup.cpp

1
src/app/app.qbs
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@@ -23,6 +23,7 @@ QtcProduct {
installDir: qtc.ide_bin_path
property bool qtcRunnable: true
cpp.defines: base.concat(['IDE_LIBEXEC_PATH="' + qtc.ide_libexec_path + '"'])
cpp.rpaths: qbs.targetOS.contains("macos") ? ["@executable_path/../Frameworks"]
: ["$ORIGIN/../" + qtc.libDirName + "/qtcreator"]
cpp.includePaths: [

3
src/app/main.cpp
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@@ -327,7 +327,8 @@ int main(int argc, char **argv)
const int threadCount = QThreadPool::globalInstance()->maxThreadCount();
QThreadPool::globalInstance()->setMaxThreadCount(qMax(4, 2 * threadCount));
CrashHandlerSetup setupCrashHandler; // Display a backtrace once a serious signal is delivered.
// Display a backtrace once a serious signal is delivered.
CrashHandlerSetup setupCrashHandler(IDE_LIBEXEC_PATH);
#ifdef ENABLE_QT_BREAKPAD
QtSystemExceptionHandler systemExceptionHandler;

17
src/tools/qtcreatorcrashhandler/crashhandler.cpp
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@@ -85,10 +85,13 @@ public:
class CrashHandlerPrivate
{
public:
CrashHandlerPrivate(pid_t pid, const QString &signalName, CrashHandler *crashHandler)
CrashHandlerPrivate(pid_t pid,
const QString &signalName,
const QString &appName,
CrashHandler *crashHandler)
: pid(pid),
creatorInPath(Utils::Environment::systemEnvironment().searchInPath(QLatin1String(QtCreatorExecutable))),
dialog(crashHandler, signalName) {}
dialog(crashHandler, signalName, appName) {}
const pid_t pid;
const Utils::FileName creatorInPath; // Backup debugger.
@@ -100,8 +103,12 @@ public:
QStringList restartAppEnvironment;
};
CrashHandler::CrashHandler(pid_t pid, const QString &signalName, QObject *parent)
: QObject(parent), d(new CrashHandlerPrivate(pid, signalName, this))
CrashHandler::CrashHandler(pid_t pid,
const QString &signalName,
const QString &appName,
RestartCapability restartCap,
QObject *parent)
: QObject(parent), d(new CrashHandlerPrivate(pid, signalName, appName, this))
{
connect(&d->backtraceCollector, &BacktraceCollector::error, this, &CrashHandler::onError);
connect(&d->backtraceCollector, &BacktraceCollector::backtraceChunk,
@@ -112,7 +119,7 @@ CrashHandler::CrashHandler(pid_t pid, const QString &signalName, QObject *parent
d->dialog.appendDebugInfo(collectKernelVersionInfo());
d->dialog.appendDebugInfo(collectLinuxDistributionInfo());
if (!collectRestartAppData()) {
if (restartCap == DisableRestart || !collectRestartAppData()) {
d->dialog.disableRestartAppCheckBox();
if (d->creatorInPath.isEmpty())
d->dialog.disableDebugAppButton();

8
src/tools/qtcreatorcrashhandler/crashhandler.h
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@@ -38,7 +38,13 @@ class CrashHandler : public QObject
{
Q_OBJECT
public:
explicit CrashHandler(pid_t pid, const QString &signalName, QObject *parent = 0);
enum RestartCapability { EnableRestart, DisableRestart };
explicit CrashHandler(pid_t pid,
const QString &signalName,
const QString &appName,
RestartCapability restartCap = EnableRestart,
QObject *parent = 0);
~CrashHandler();
void run();

14
src/tools/qtcreatorcrashhandler/crashhandlerdialog.cpp
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@@ -39,7 +39,9 @@ static const char SettingsApplication[] = "QtCreator";
static const char SettingsKeySkipWarningAbortingBacktrace[]
= "CrashHandler/SkipWarningAbortingBacktrace";
CrashHandlerDialog::CrashHandlerDialog(CrashHandler *handler, const QString &signalName,
CrashHandlerDialog::CrashHandlerDialog(CrashHandler *handler,
const QString &signalName,
const QString &appName,
QWidget *parent) :
QDialog(parent),
m_crashHandler(handler),
@@ -51,6 +53,7 @@ CrashHandlerDialog::CrashHandlerDialog(CrashHandler *handler, const QString &sig
m_ui->debugInfoEdit->setReadOnly(true);
m_ui->progressBar->setMinimum(0);
m_ui->progressBar->setMaximum(0);
m_ui->restartAppCheckBox->setText(tr("&Restart %1 on close").arg(appName));
const QStyle * const style = QApplication::style();
m_ui->closeButton->setIcon(style->standardIcon(QStyle::SP_DialogCloseButton));
@@ -67,7 +70,7 @@ CrashHandlerDialog::CrashHandlerDialog(CrashHandler *handler, const QString &sig
m_crashHandler, &CrashHandler::debugApplication);
connect(m_ui->closeButton, &QAbstractButton::clicked, this, &CrashHandlerDialog::close);
setApplicationInfo(signalName);
setApplicationInfo(signalName, appName);
}
CrashHandlerDialog::~CrashHandlerDialog()
@@ -120,10 +123,9 @@ void CrashHandlerDialog::disableDebugAppButton()
m_ui->debugAppButton->setDisabled(true);
}
void CrashHandlerDialog::setApplicationInfo(const QString &signalName)
void CrashHandlerDialog::setApplicationInfo(const QString &signalName, const QString &appName)
{
const QString ideName = QLatin1String("Qt Creator");
const QString title = tr("%1 has closed unexpectedly (Signal \"%2\")").arg(ideName, signalName);
const QString title = tr("%1 has closed unexpectedly (Signal \"%2\")").arg(appName, signalName);
const QString introLabelContents = tr(
"<p><b>%1.</b></p>"
"<p>Please file a <a href='%2'>bug report</a> with the debug information provided below.</p>")
@@ -137,7 +139,7 @@ void CrashHandlerDialog::setApplicationInfo(const QString &signalName)
#endif
const QString versionInformation = tr(
"%1 %2%3, based on Qt %4 (%5 bit)\n")
.arg(ideName, QLatin1String(Core::Constants::IDE_VERSION_LONG), revision,
.arg(appName, QLatin1String(Core::Constants::IDE_VERSION_LONG), revision,
QLatin1String(QT_VERSION_STR),
QString::number(QSysInfo::WordSize));
m_ui->debugInfoEdit->append(versionInformation);

6
src/tools/qtcreatorcrashhandler/crashhandlerdialog.h
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@@ -39,12 +39,14 @@ class CrashHandlerDialog : public QDialog
Q_OBJECT
public:
explicit CrashHandlerDialog(CrashHandler *handler, const QString &signalName,
explicit CrashHandlerDialog(CrashHandler *handler,
const QString &signalName,
const QString &appName,
QWidget *parent = 0);
~CrashHandlerDialog();
public:
void setApplicationInfo(const QString &signalName);
void setApplicationInfo(const QString &signalName, const QString &appName);
void appendDebugInfo(const QString &chunk);
void selectLineWithContents(const QString &text);
void setToFinalState();

29
src/tools/qtcreatorcrashhandler/crashhandlersetup.cpp
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@@ -57,8 +57,10 @@
#include <X11/Xlib.h>
#endif
static const char *crashHandlerPathC;
static void *signalHandlerStack;
static const char *appNameC = nullptr;
static const char *disableRestartOptionC = nullptr;
static const char *crashHandlerPathC = nullptr;
static void *signalHandlerStack = nullptr;
extern "C" void signalHandler(int signal)
{
@@ -72,7 +74,12 @@ extern "C" void signalHandler(int signal)
case -1: // error
break;
case 0: // child
execl(crashHandlerPathC, crashHandlerPathC, strsignal(signal), (char *) 0);
if (disableRestartOptionC) {
execl(crashHandlerPathC, crashHandlerPathC, strsignal(signal), appNameC,
disableRestartOptionC, (char *) 0);
} else {
execl(crashHandlerPathC, crashHandlerPathC, strsignal(signal), appNameC, (char *) 0);
}
_exit(EXIT_FAILURE);
default: // parent
prctl(PR_SET_PTRACER, pid, 0, 0, 0);
@@ -83,14 +90,23 @@ extern "C" void signalHandler(int signal)
}
#endif // BUILD_CRASH_HANDLER
CrashHandlerSetup::CrashHandlerSetup()
CrashHandlerSetup::CrashHandlerSetup(const QString &appName,
RestartCapability restartCap,
const QString &executableDirPath)
{
#ifdef BUILD_CRASH_HANDLER
if (qgetenv("QTC_USE_CRASH_HANDLER").isEmpty())
return;
const QString crashHandlerPath = qApp->applicationDirPath()
+ QLatin1String("/qtcreator_crash_handler");
appNameC = qstrdup(qPrintable(appName));
if (restartCap == DisableRestart)
disableRestartOptionC = "--disable-restart";
const QString execDirPath = executableDirPath.isEmpty()
? qApp->applicationDirPath()
: executableDirPath;
const QString crashHandlerPath = execDirPath + QLatin1String("/qtcreator_crash_handler");
crashHandlerPathC = qstrdup(qPrintable(crashHandlerPath));
// Setup an alternative stack for the signal handler. This way we are able to handle SIGSEGV
@@ -137,6 +153,7 @@ CrashHandlerSetup::~CrashHandlerSetup()
{
#ifdef BUILD_CRASH_HANDLER
delete[] crashHandlerPathC;
delete[] appNameC;
free(signalHandlerStack);
#endif
}

8
src/tools/qtcreatorcrashhandler/crashhandlersetup.h
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@@ -25,9 +25,15 @@
#pragma once
#include <QString>
class CrashHandlerSetup
{
public:
CrashHandlerSetup();
enum RestartCapability { EnableRestart, DisableRestart };
CrashHandlerSetup(const QString &appName,
RestartCapability restartCap = EnableRestart,
const QString &executableDirPath = QString());
~CrashHandlerSetup();
};

48
src/tools/qtcreatorcrashhandler/main.cpp
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@@ -27,6 +27,7 @@
#include "utils.h"
#include <QApplication>
#include <QCommandLineParser>
#include <QFile>
#include <QProcess>
#include <QString>
@@ -37,27 +38,52 @@
#include <sys/types.h>
#include <unistd.h>
// Called by signal handler of qtcreator.
// Usage: $0 <name of signal causing the crash>
static void printErrorAndExit()
{
QTextStream err(stderr);
err << QString::fromLatin1("This crash handler will be called by Qt Creator itself. "
"Do not call this manually.\n");
exit(EXIT_FAILURE);
}
static bool hasProcessOriginFromQtCreatorBuildDir(Q_PID pid)
{
const QString executable = QFile::symLinkTarget(QString::fromLatin1("/proc/%1/exe")
.arg(QString::number(pid)));
return executable.contains("qtcreator");
}
// Called by signal handler of crashing application.
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
app.setApplicationName(QLatin1String(APPLICATION_NAME));
app.setWindowIcon(QApplication::style()->standardIcon(QStyle::SP_MessageBoxCritical));
// Parse arguments.
QCommandLineParser parser;
parser.addPositionalArgument("signal-name", QString());
parser.addPositionalArgument("app-name", QString());
const QCommandLineOption disableRestartOption("disable-restart");
parser.addOption(disableRestartOption);
parser.process(app);
// Check usage.
const QStringList positionalArguments = parser.positionalArguments();
if (positionalArguments.size() != 2)
printErrorAndExit();
Q_PID parentPid = getppid();
QString parentExecutable = QFile::symLinkTarget(QString::fromLatin1("/proc/%1/exe")
.arg(QString::number(parentPid)));
if (argc > 2 || !parentExecutable.contains(QLatin1String("qtcreator"))) {
QTextStream err(stderr);
err << QString::fromLatin1("This crash handler will be called by Qt Creator itself. "
"Do not call this manually.\n");
return EXIT_FAILURE;
}
if (!hasProcessOriginFromQtCreatorBuildDir(parentPid))
printErrorAndExit();
// Run.
CrashHandler *crashHandler = new CrashHandler(parentPid, app.arguments().at(1));
const QString signalName = parser.positionalArguments().at(0);
const QString appName = parser.positionalArguments().at(1);
CrashHandler::RestartCapability restartCap = CrashHandler::EnableRestart;
if (parser.isSet(disableRestartOption))
restartCap = CrashHandler::DisableRestart;
CrashHandler *crashHandler = new CrashHandler(parentPid, signalName, appName, restartCap);
crashHandler->run();
return app.exec();

1
src/tools/qtcreatorcrashhandler/qtcreatorcrashhandler.pro
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@@ -2,7 +2,6 @@ QTC_LIB_DEPENDS += utils
include(../../qtcreatortool.pri)
DESTDIR = $$IDE_BIN_PATH
TARGET = qtcreator_crash_handler
SOURCES += \

1
src/tools/qtcreatorcrashhandler/qtcreatorcrashhandler.qbs
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@@ -3,7 +3,6 @@ import qbs 1.0
QtcTool {
name: "qtcreator_crash_handler"
condition: qbs.targetOS.contains("linux") && qbs.buildVariant == "debug"
installDir: qtc.ide_bin_path
Depends { name: "Utils" }
Depends { name: "Qt.widgets" }