VcsBaseClientImpl: Don't leak VcsCommand instances

The running VcsCommand may leak on shutdown. Make them always
a child of a guard object.

Change-Id: Ie2d07d15cd13f1c08636bb1e9c5face09c6a782d
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/bazaar/bazaarplugin.cpp

@@ -953,7 +953,7 @@ VcsCommand *BazaarPluginPrivate::createInitialCheckoutCommand(const QString &url
 
     Environment env = m_client.processEnvironment(baseDirectory);
     env.set("BZR_PROGRESS_BAR", "text");
-    auto command = VcsBaseClient::createVcsCommand(baseDirectory, env);
+    auto command = VcsBaseClient::createVcsCommand(this, baseDirectory, env);
     command->addJob({m_client.vcsBinary(baseDirectory), args}, -1);
     return command;
 }

src/plugins/cvs/cvsplugin.cpp

@@ -410,7 +410,8 @@ VcsCommand *CvsPluginPrivate::createInitialCheckoutCommand(const QString &url,
     QStringList args;
     args << QLatin1String("checkout") << url << extraArgs;
 
-    auto command = VcsBaseClient::createVcsCommand(baseDirectory, Environment::systemEnvironment());
+    auto command = VcsBaseClient::createVcsCommand(this, baseDirectory,
+                                                   Environment::systemEnvironment());
     command->setDisplayName(Tr::tr("CVS Checkout"));
     command->addJob({settings().binaryPath(), settings().addOptions(args)}, -1);
     return command;

src/plugins/fossil/fossilplugin.cpp

@@ -927,7 +927,7 @@ VcsCommand *FossilPluginPrivate::createInitialCheckoutCommand(const QString &sou
     checkoutPath.createDir();
 
     // Setup the wizard page command job
-    auto command = VcsBaseClient::createVcsCommand(checkoutPath,
+    auto command = VcsBaseClient::createVcsCommand(this, checkoutPath,
                                                    fossilClient().processEnvironment(checkoutPath));
 
     if (!isLocalRepository

src/plugins/git/gitplugin.cpp

@@ -1769,7 +1769,7 @@ VcsCommand *GitPluginPrivate::createInitialCheckoutCommand(const QString &url,
     QStringList args = {"clone", "--progress"};
     args << extraArgs << url << localName;
 
-    auto command = VcsBaseClient::createVcsCommand(baseDirectory,
+    auto command = VcsBaseClient::createVcsCommand(this, baseDirectory,
                                                    gitClient().processEnvironment(baseDirectory));
     command->addFlags(RunFlags::SuppressStdErr);
     command->addJob({gitClient().vcsBinary(baseDirectory), args}, -1);

src/plugins/mercurial/mercurialplugin.cpp

@@ -736,9 +736,8 @@ VcsCommand *MercurialPluginPrivate::createInitialCheckoutCommand(const QString &
 {
     QStringList args;
     args << QLatin1String("clone") << extraArgs << url << localName;
-    auto command = VcsBaseClient::createVcsCommand(baseDirectory,
-                                                   mercurialClient().processEnvironment(
-                                                       baseDirectory));
+    auto command = VcsBaseClient::createVcsCommand(this, baseDirectory,
+                   mercurialClient().processEnvironment(baseDirectory));
     command->addJob({settings().binaryPath(), args}, -1);
     return command;
 }

src/plugins/subversion/subversionplugin.cpp

@@ -1135,9 +1135,8 @@ VcsCommand *SubversionPluginPrivate::createInitialCheckoutCommand(const QString
     args << SubversionClient::AddAuthOptions();
     args << Subversion::Constants::NON_INTERACTIVE_OPTION << extraArgs << url << localName;
 
-    auto command = VcsBaseClient::createVcsCommand(baseDirectory,
-                                                   subversionClient().processEnvironment(
-                                                       baseDirectory));
+    auto command = VcsBaseClient::createVcsCommand(this, baseDirectory,
+                   subversionClient().processEnvironment(baseDirectory));
     command->addJob(args, -1);
     return command;
 }

src/plugins/vcsbase/vcsbaseclient.cpp

@@ -6,7 +6,6 @@
 #include "vcsbaseclientsettings.h"
 #include "vcsbaseeditor.h"
 #include "vcsbaseeditorconfig.h"
-#include "vcsbaseplugin.h"
 #include "vcsbasetr.h"
 #include "vcscommand.h"
 #include "vcsoutputwindow.h"
@@ -72,7 +71,8 @@ FilePath VcsBaseClientImpl::vcsBinary(const Utils::FilePath &forDirectory) const
 VcsCommand *VcsBaseClientImpl::createCommand(const FilePath &workingDirectory,
                                              VcsBaseEditorWidget *editor) const
 {
-    auto cmd = createVcsCommand(workingDirectory, processEnvironment(workingDirectory));
+    auto cmd = createVcsCommand(const_cast<VcsBaseClientImpl *>(this),
+                                workingDirectory, processEnvironment(workingDirectory));
     if (editor) {
         editor->setCommand(cmd);
         connect(cmd, &VcsCommand::done, editor, [editor, cmd] {
@@ -214,6 +214,14 @@ VcsCommand *VcsBaseClientImpl::createVcsCommand(const FilePath &defaultWorkingDi
     return new VcsCommand(defaultWorkingDir, environment);
 }
 
+VcsCommand *VcsBaseClientImpl::createVcsCommand(QObject *parent, const FilePath &defaultWorkingDir,
+                                                const Environment &environment)
+{
+    auto command = new VcsCommand(defaultWorkingDir, environment);
+    command->setParent(parent);
+    return command;
+}
+
 VcsBaseEditorWidget *VcsBaseClientImpl::createVcsEditor(Id kind, QString title,
                                                         const FilePath &source, QTextCodec *codec,
                                                         const char *registerDynamicProperty,

src/plugins/vcsbase/vcsbaseclient.h

@@ -44,8 +44,11 @@ public:
     virtual Utils::FilePath vcsBinary(const Utils::FilePath &forDirectory) const;
     int vcsTimeoutS() const;
 
+    // TODO: For master: remove this overload.
     static VcsCommand *createVcsCommand(const Utils::FilePath &defaultWorkingDir,
                                         const Utils::Environment &environment);
+    static VcsCommand *createVcsCommand(QObject *parent, const Utils::FilePath &defaultWorkingDir,
+                                        const Utils::Environment &environment);
 
     VcsBaseEditorWidget *createVcsEditor(Utils::Id kind, QString title,
                                          const Utils::FilePath &source, QTextCodec *codec,

src/plugins/vcsbase/vcscommand.h

@@ -65,6 +65,7 @@ class VCSBASE_EXPORT VcsCommand final : public QObject
     Q_OBJECT
 
 public:
+    // TODO: For master, make c'tor private and make it a friend to VcsBaseClientImpl.
     VcsCommand(const Utils::FilePath &workingDirectory, const Utils::Environment &environment);
     ~VcsCommand() override;