mobile: add timer to measure startup.

Subsurface-mobile has a long startup time; in order to isolate the problem(s) a
timer is added to see where time is "lost".

The collected startup times are added to the clipboard together with the other
logs, allowing test users to report back.

All this is only enabled when compiling with -DENABLE_STARTUP_TIMING

Closes #1340

[Dirk Hohndel: collapsed multiple commits and minor white space cleanups, added
               missing QMutex variable]

Signed-off-by: Jan Iversen <jani@apache.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 41 insertions, 0 deletions

diff --git a/subsurface-mobile-main.cpp b/subsurface-mobile-main.cpp
index 878dc59ea..131e1d493 100644
--- a/subsurface-mobile-main.cpp
+++ b/subsurface-mobile-main.cpp
@@ -19,14 +19,50 @@
 #include <QLocale>
 #include <git2.h>
 
+// Implementation of STP logging
+#include "core/ssrf.h"
+#ifdef ENABLE_STARTUP_TIMING
+#include <QElapsedTimer>
+#include <QMutex>
+#include <QMutexLocker>
+void log_stp(const char *ident, QString *buf)
+{
+	static bool firstCall = true;
+	static QElapsedTimer stpDuration;
+	static QString stpText;
+	static QMutex logMutex;
+
+	QMutexLocker l(&logMutex);
+
+	if (firstCall) {
+		firstCall = false;
+		stpDuration.start();
+	}
+	if (ident)
+		stpText += QString("STP ") \
+					.append(QString::number(stpDuration.elapsed())) \
+					.append(" ms, ") \
+					.append(ident) \
+					.append("\n");
+	if (buf) {
+		*buf += "---------- startup timer ----------\n";
+		*buf += stpText;
+	}
+}
+#endif // ENABLE_STARTUP_TIMING
+
+
 int main(int argc, char **argv)
 {
+	LOG_STP("main starting");
+
 	int i;
 	QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
 	QLoggingCategory::setFilterRules(QStringLiteral("qt.bluetooth* = true"));
 
 	// Start application
 	new QApplication(argc, argv);
+	LOG_STP("main Qt started");
 
 	// and get comand line arguments
 	QStringList arguments = QCoreApplication::arguments();
@@ -41,6 +77,7 @@ int main(int argc, char **argv)
 		}
 	}
 	git_libgit2_init();
+	LOG_STP("main git loaded");
 	setup_system_prefs();
 	if (QLocale().measurementSystem() == QLocale::MetricSystem)
 		default_prefs.units = SI_units;
@@ -51,8 +88,11 @@ int main(int argc, char **argv)
 	fill_computer_list();
 
 	parse_xml_init();
+	LOG_STP("main xml parsed");
 	taglist_init_global();
+	LOG_STP("main taglist done");
 	init_ui();
+	LOG_STP("main init_ui done");
 	if (prefs.default_file_behavior == LOCAL_DEFAULT_FILE)
 		set_filename(prefs.default_filename);
 	else
@@ -66,6 +106,7 @@ int main(int argc, char **argv)
 
 	init_proxy();
 
+	LOG_STP("main call run_ui (continue in qmlmanager)");
 	if (!quit)
 		run_ui();
 	exit_ui();