Postpone the database check & backup to a little while after startup.

ext/libclementine-common/core/closure.cpp

@@ -18,6 +18,7 @@
 #include "closure.h"
 
 #include "core/logging.h"
+#include "core/timeconstants.h"
 
 namespace _detail {
 
@@ -89,3 +90,12 @@ _detail::Closure* NewClosure(
     QObject* receiver, const char* slot) {
   return new _detail::Closure(sender, signal, receiver, slot);
 }
+
+void DoAfter(QObject* receiver, const char* slot, int msec) {
+  QTimer::singleShot(msec, receiver, slot);
+}
+
+void DoInAMinuteOrSo(QObject* receiver, const char* slot) {
+  int msec = (60 + (qrand() % 60)) * kMsecPerSec;
+  DoAfter(receiver, slot, msec);
+}

ext/libclementine-common/core/closure.h

@@ -23,6 +23,7 @@
 #include <QMetaMethod>
 #include <QObject>
 #include <QSharedPointer>
+#include <QTimer>
 
 #include <boost/noncopyable.hpp>
 #include <boost/scoped_ptr.hpp>
@@ -224,4 +225,7 @@ _detail::Closure* NewClosure(
         C_ARG(T0, val0), C_ARG(T1, val1));
 }
 
+void DoAfter(QObject* receiver, const char* slot, int msec);
+void DoInAMinuteOrSo(QObject* receiver, const char* slot);
+
 #endif  // CLOSURE_H

src/core/application.cpp

@@ -90,7 +90,7 @@ Application::Application(QObject* parent)
   library_->Init();
   library_->StartThreads();
 
-  QMetaObject::invokeMethod(database_, "DoBackup", Qt::QueuedConnection);
+  DoInAMinuteOrSo(database_, SLOT(DoBackup()));
 }
 
 Application::~Application() {

src/core/database.cpp

@@ -685,6 +685,7 @@ bool Database::CheckErrors(const QSqlQuery& query) {
 }
 
 bool Database::IntegrityCheck(QSqlDatabase db) {
+  qLog(Debug) << "Starting database integrity check";
   int task_id = app_->task_manager()->StartTask(tr("Integrity check"));
 
   bool ok = false;
@@ -743,6 +744,7 @@ bool Database::OpenDatabase(const QString& filename, sqlite3** connection) const
 }
 
 void Database::BackupFile(const QString& filename) {
+  qLog(Debug) << "Starting database backup";
   QString dest_filename = QString("%1.bak").arg(filename);
   const int task_id = app_->task_manager()->StartTask(tr("Backing up database"));
 

src/core/database.h

@@ -64,7 +64,7 @@ class Database : public QObject {
  signals:
   void Error(const QString& message);
 
- private slots:
+ public slots:
   void DoBackup();
 
  private:

src/main.cpp

@@ -303,6 +303,12 @@ int main(int argc, char *argv[]) {
   logging::SetLevels(options.log_levels());
   g_log_set_default_handler(reinterpret_cast<GLogFunc>(&logging::GLog), NULL);
 
+  // Seed the random number generator
+  time_t t = time(NULL);
+  srand(time(NULL));
+  qDebug() << "Seeding with:" << t;
+  qsrand(t);
+
   IncreaseFDLimit();
 
   QtSingleApplication a(argc, argv);
@@ -387,9 +393,6 @@ int main(int argc, char *argv[]) {
   QNetworkProxyFactory::setApplicationProxyFactory(
       NetworkProxyFactory::Instance());
 
-  // Seed the random number generator
-  srand(time(NULL));
-
   // Initialize the repository of cover providers.  Last.fm registers itself
   // when its service is created.
   app.cover_providers()->AddProvider(new AmazonCoverProvider);