Reuse ProcessHelper in process launcher

Handle lowPriority and unixTerminalDisabled inside
process launcher.

Change-Id: I7a8998e303da0e79186c1201fc6e1a76edb4e1b3
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/libs/utils/launcherpackets.cpp

@@ -59,13 +59,15 @@ StartProcessPacket::StartProcessPacket(quintptr token)
 void StartProcessPacket::doSerialize(QDataStream &stream) const
 {
     stream << command << arguments << workingDir << env << processMode << writeData << channelMode
-           << standardInputFile << belowNormalPriority << nativeArguments;
+           << standardInputFile << belowNormalPriority << nativeArguments << lowPriority
+           << unixTerminalDisabled;
 }
 
 void StartProcessPacket::doDeserialize(QDataStream &stream)
 {
     stream >> command >> arguments >> workingDir >> env >> processMode >> writeData >> channelMode
-           >> standardInputFile >> belowNormalPriority >> nativeArguments;
+           >> standardInputFile >> belowNormalPriority >> nativeArguments >> lowPriority
+           >> unixTerminalDisabled;
 }
 
 

src/libs/utils/launcherpackets.h

@@ -117,6 +117,8 @@ public:
     QString standardInputFile;
     bool belowNormalPriority = false;
     QString nativeArguments;
+    bool lowPriority = false;
+    bool unixTerminalDisabled = false;
 
 private:
     void doSerialize(QDataStream &stream) const override;

src/libs/utils/launchersocket.h

@@ -105,6 +105,8 @@ public:
 
     void setBelowNormalPriority() { m_belowNormalPriority = true; }
     void setNativeArguments(const QString &arguments) { m_nativeArguments = arguments; }
+    void setLowPriority() { m_lowPriority = true; }
+    void setUnixTerminalDisabled() { m_unixTerminalDisabled = true; }
 
 signals:
     void errorOccurred(QProcess::ProcessError error);
@@ -187,6 +189,8 @@ private:
 
     bool m_belowNormalPriority = false;
     QString m_nativeArguments;
+    bool m_lowPriority = false;
+    bool m_unixTerminalDisabled = false;
 
     friend class LauncherSocket;
     friend class CallerHandle;

src/libs/utils/processutils.cpp

@@ -24,13 +24,13 @@
 ****************************************************************************/
 
 #include "processutils.h"
-#include <QProcess>
 
 #ifdef Q_OS_WIN
-#ifdef QTCREATOR_PCH_H
-#define CALLBACK WINAPI
-#endif
 #include <qt_windows.h>
+#else
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
 #endif
 
 namespace Utils {
@@ -86,4 +86,21 @@ void ProcessStartHandler::setNativeArguments(QProcess *process, const QString &a
 #endif // Q_OS_WIN
 }
 
+
+void ProcessHelper::setupChildProcess_impl()
+{
+#if defined Q_OS_UNIX
+    // nice value range is -20 to +19 where -20 is highest, 0 default and +19 is lowest
+    if (m_lowPriority) {
+        errno = 0;
+        if (::nice(5) == -1 && errno != 0)
+            perror("Failed to set nice value");
+    }
+
+    // Disable terminal by becoming a session leader.
+    if (m_unixTerminalDisabled)
+        setsid();
+#endif
+}
+
 } // namespace Utils

src/libs/utils/processutils.h

@@ -26,10 +26,7 @@
 #pragma once
 
 #include <QIODevice>
-
-QT_BEGIN_NAMESPACE
-class QProcess;
-QT_END_NAMESPACE
+#include <QProcess>
 
 namespace Utils {
 
@@ -54,6 +51,30 @@ private:
     QByteArray m_writeData;
 };
 
+class ProcessHelper : public QProcess
+{
+public:
+    ProcessHelper(QObject *parent = nullptr) : QProcess(parent)
+    {
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0) && defined(Q_OS_UNIX)
+        setChildProcessModifier([this] { setupChildProcess_impl(); });
+#endif
+    }
+
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+    void setupChildProcess() override { setupChildProcess_impl(); }
+#endif
+
+    using QProcess::setErrorString;
+
+    void setLowPriority() { m_lowPriority = true; }
+    void setUnixTerminalDisabled() { m_unixTerminalDisabled = true; }
+
+private:
+    void setupChildProcess_impl();
+    bool m_lowPriority = false;
+    bool m_unixTerminalDisabled = false;
+};
 
 } // namespace Utils
 

src/libs/utils/qtcprocess.cpp

@@ -57,13 +57,8 @@
 #define CALLBACK WINAPI
 #endif
 #include <qt_windows.h>
-#else
-#include <errno.h>
-#include <stdio.h>
-#include <unistd.h>
 #endif
 
-
 using namespace Utils::Internal;
 
 namespace Utils {
@@ -132,9 +127,10 @@ public:
     virtual bool waitForReadyRead(int msecs) = 0;
     virtual bool waitForFinished(int msecs) = 0;
 
-    virtual void setLowPriority() = 0;
-    virtual bool lowPriority() const = 0;
-    virtual void setDisableUnixTerminal() = 0;
+    void setLowPriority() { m_lowPriority = true; }
+    bool isLowPriority() const { return m_lowPriority; }
+    void setUnixTerminalDisabled() { m_unixTerminalDisabled = true; }
+    bool isUnixTerminalDisabled() const { return m_unixTerminalDisabled; }
 
     void setBelowNormalPriority() { m_belowNormalPriority = true; }
     bool isBelowNormalPriority() const { return m_belowNormalPriority; }
@@ -154,42 +150,8 @@ private:
     const ProcessMode m_processMode;
     bool m_belowNormalPriority = false;
     QString m_nativeArguments;
-};
-
-class ProcessHelper : public QProcess
-{
-public:
-    ProcessHelper()
-    {
-#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0) && defined(Q_OS_UNIX)
-        setChildProcessModifier([this] { setupChildProcess_impl(); });
-#endif
-    }
-
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-    void setupChildProcess() override { setupChildProcess_impl(); }
-#endif
-
-    void setupChildProcess_impl()
-    {
-#if defined Q_OS_UNIX
-        // nice value range is -20 to +19 where -20 is highest, 0 default and +19 is lowest
-        if (m_lowPriority) {
-            errno = 0;
-            if (::nice(5) == -1 && errno != 0)
-                perror("Failed to set nice value");
-        }
-
-        // Disable terminal by becoming a session leader.
-        if (m_disableUnixTerminal)
-            setsid();
-#endif
-    }
-
-    using QProcess::setErrorString;
-
     bool m_lowPriority = false;
-    bool m_disableUnixTerminal = false;
+    bool m_unixTerminalDisabled = false;
 };
 
 class QProcessImpl : public ProcessInterface
@@ -223,6 +185,10 @@ public:
         if (isBelowNormalPriority())
             m_processStartHandler.setBelowNormalPriority(&m_process);
         m_processStartHandler.setNativeArguments(&m_process, nativeArguments());
+        if (isLowPriority())
+            m_process.setLowPriority();
+        if (isUnixTerminalDisabled())
+            m_process.setUnixTerminalDisabled();
         m_process.start(program, arguments, m_processStartHandler.openMode());
         m_processStartHandler.handleProcessStart(&m_process);
     }
@@ -262,13 +228,6 @@ public:
     bool waitForFinished(int msecs) override
     { return m_process.waitForFinished(msecs); }
 
-    void setLowPriority() override
-    { m_process.m_lowPriority = true; }
-    bool lowPriority() const override
-    { return m_process.m_lowPriority; }
-    void setDisableUnixTerminal() override
-    { m_process.m_disableUnixTerminal = true; }
-
 private:
     void handleStarted()
     {
@@ -321,6 +280,10 @@ public:
         if (isBelowNormalPriority())
             m_handle->setBelowNormalPriority();
         m_handle->setNativeArguments(nativeArguments());
+        if (isLowPriority())
+            m_handle->setLowPriority();
+        if (isUnixTerminalDisabled())
+            m_handle->setUnixTerminalDisabled();
         m_handle->start(program, arguments, writeData);
     }
     void terminate() override { cancel(); } // TODO: what are differences among terminate, kill and close?
@@ -343,10 +306,6 @@ public:
     bool waitForReadyRead(int msecs) override { return m_handle->waitForReadyRead(msecs); }
     bool waitForFinished(int msecs) override { return m_handle->waitForFinished(msecs); }
 
-    void setLowPriority() override { QTC_CHECK(false); }
-    bool lowPriority() const override { QTC_CHECK(false); return false; }
-    void setDisableUnixTerminal() override { QTC_CHECK(false); }
-
 private:
     typedef void (ProcessLauncherImpl::*PreSignal)(void);
 
@@ -610,12 +569,12 @@ void QtcProcess::start()
     if (d->m_commandLine.executable().osType() == OsTypeWindows) {
         QString args;
         if (d->m_useCtrlCStub) {
-            if (d->m_process->lowPriority())
+            if (d->m_process->isLowPriority())
                 ProcessArgs::addArg(&args, "-nice");
             ProcessArgs::addArg(&args, QDir::toNativeSeparators(command));
             command = QCoreApplication::applicationDirPath()
                     + QLatin1String("/qtcreator_ctrlc_stub.exe");
-        } else if (d->m_process->lowPriority()) {
+        } else if (d->m_process->isLowPriority()) {
             d->m_process->setBelowNormalPriority();
         }
         ProcessArgs::addArgs(&args, arguments.toWindowsArgs());
@@ -687,7 +646,7 @@ void QtcProcess::setLowPriority()
 
 void QtcProcess::setDisableUnixTerminal()
 {
-    d->m_process->setDisableUnixTerminal();
+    d->m_process->setUnixTerminalDisabled();
 }
 
 void QtcProcess::setStandardInputFile(const QString &inputFile)

src/tools/processlauncher/launchersockethandler.cpp

@@ -26,6 +26,7 @@
 #include "launchersockethandler.h"
 
 #include "launcherlogging.h"
+#include "processutils.h"
 
 #include <QtCore/qcoreapplication.h>
 #include <QtCore/qprocess.h>
@@ -35,12 +36,12 @@
 namespace Utils {
 namespace Internal {
 
-class Process : public QProcess
+class Process : public ProcessHelper
 {
     Q_OBJECT
 public:
     Process(quintptr token, QObject *parent = nullptr) :
-        QProcess(parent), m_token(token), m_stopTimer(new QTimer(this))
+        ProcessHelper(parent), m_token(token), m_stopTimer(new QTimer(this))
     {
         m_stopTimer->setSingleShot(true);
         connect(m_stopTimer, &QTimer::timeout, this, &Process::cancel);
@@ -246,6 +247,10 @@ void LauncherSocketHandler::handleStartPacket()
     if (packet.belowNormalPriority)
         handler->setBelowNormalPriority(process);
     handler->setNativeArguments(process, packet.nativeArguments);
+    if (packet.lowPriority)
+        process->setLowPriority();
+    if (packet.unixTerminalDisabled)
+        process->setUnixTerminalDisabled();
     process->start(packet.command, packet.arguments, handler->openMode());
     handler->handleProcessStart(process);
 }