ExtensionSystem: Add option to skip startup crash check

It can lead to problems, especially in automated environments, so
provide an option to skip it.

Task-number: QTCREATORBUG-24294
Change-Id: Ided0d12a87dc60fcaee6ad7e2747982cb0806a8f
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/libs/extensionsystem/optionsparser.cpp

@@ -42,6 +42,7 @@ const char *OptionsParser::LOAD_OPTION = "-load";
 const char *OptionsParser::TEST_OPTION = "-test";
 const char *OptionsParser::NOTEST_OPTION = "-notest";
 const char *OptionsParser::PROFILE_OPTION = "-profile";
+const char *OptionsParser::NO_CRASHCHECK_OPTION = "-no-crashcheck";
 
 OptionsParser::OptionsParser(const QStringList &args,
         const QMap<QString, bool> &appOptions,
@@ -79,6 +80,8 @@ bool OptionsParser::parse()
             continue;
         if (checkForProfilingOption())
             continue;
+        if (checkForNoCrashcheckOption())
+            continue;
 #ifdef WITH_TESTS
         if (checkForTestOptions())
             continue;
@@ -243,6 +246,14 @@ bool OptionsParser::checkForProfilingOption()
     return true;
 }
 
+bool OptionsParser::checkForNoCrashcheckOption()
+{
+    if (m_currentArg != QLatin1String(NO_CRASHCHECK_OPTION))
+        return false;
+    m_pmPrivate->enableCrashCheck = false;
+    return true;
+}
+
 bool OptionsParser::checkForPluginOption()
 {
     bool requiresParameter;

src/libs/extensionsystem/optionsparser.h

@@ -49,6 +49,8 @@ public:
     static const char *TEST_OPTION;
     static const char *NOTEST_OPTION;
     static const char *PROFILE_OPTION;
+    static const char *NO_CRASHCHECK_OPTION;
+
 private:
     // return value indicates if the option was processed
     // it doesn't indicate success (--> m_hasError)
@@ -59,6 +61,7 @@ private:
     bool checkForAppOption();
     bool checkForPluginOption();
     bool checkForProfilingOption();
+    bool checkForNoCrashcheckOption();
     bool checkForUnknownOption();
     void forceDisableAllPluginsExceptTestedAndForceEnabled();
 

src/libs/extensionsystem/pluginmanager.cpp

@@ -64,6 +64,7 @@
 #endif
 
 #include <functional>
+#include <memory>
 
 Q_LOGGING_CATEGORY(pluginLog, "qtc.extensionsystem", QtWarningMsg)
 
@@ -729,6 +730,12 @@ void PluginManager::formatOptions(QTextStream &str, int optionIndentation, int d
     formatOption(str, QLatin1String(OptionsParser::PROFILE_OPTION),
                  QString(), QLatin1String("Profile plugin loading"),
                  optionIndentation, descriptionIndentation);
+    formatOption(str,
+                 QLatin1String(OptionsParser::NO_CRASHCHECK_OPTION),
+                 QString(),
+                 QLatin1String("Disable startup check for previously crashed instance"),
+                 optionIndentation,
+                 descriptionIndentation);
 #ifdef WITH_TESTS
     formatOption(str, QString::fromLatin1(OptionsParser::TEST_OPTION)
                  + QLatin1String(" <plugin>[,testfunction[:testdata]]..."), QString(),
@@ -1409,6 +1416,8 @@ private:
 
 void PluginManagerPrivate::checkForProblematicPlugins()
 {
+    if (!enableCrashCheck)
+        return;
     const Utils::optional<QString> pluginName = LockFile::lockedPluginName(this);
     if (pluginName) {
         PluginSpec *spec = pluginByName(*pluginName);
@@ -1464,7 +1473,9 @@ void PluginManagerPrivate::loadPlugin(PluginSpec *spec, PluginSpec::State destSt
     if (!spec->isEffectivelyEnabled() && destState == PluginSpec::Loaded)
         return;
 
-    LockFile f(this, spec);
+    std::unique_ptr<LockFile> lockFile;
+    if (enableCrashCheck)
+        lockFile.reset(new LockFile(this, spec));
 
     switch (destState) {
     case PluginSpec::Running:

src/libs/extensionsystem/pluginmanager_p.h

@@ -138,6 +138,7 @@ public:
     mutable QReadWriteLock m_lock;
 
     bool m_isInitializationDone = false;
+    bool enableCrashCheck = true;
 
 private:
     PluginManager *q;