fix: pump events and do a queued start for concurrent tasks

Heavy workloads can consume a ton of time doing their stuff, and starve
the event loop out of events. This adds an event processing call after
every concurrent task has been completed, to decrease the event loop
stravation on such loads.

Signed-off-by: flow <flowlnlnln@gmail.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/launcher/tasks/ConcurrentTask.cpp b/launcher/tasks/ConcurrentTask.cpp
index b88cfb13..ab7cbd03 100644
--- a/launcher/tasks/ConcurrentTask.cpp
+++ b/launcher/tasks/ConcurrentTask.cpp
@@ -1,10 +1,11 @@
 #include "ConcurrentTask.h"
 
 #include <QDebug>
+#include <QCoreApplication>
 
 ConcurrentTask::ConcurrentTask(QObject* parent, QString task_name, int max_concurrent)
     : Task(parent), m_name(task_name), m_total_max_size(max_concurrent)
-{}
+{ setObjectName(task_name); }
 
 ConcurrentTask::~ConcurrentTask()
 {
@@ -36,8 +37,9 @@ void ConcurrentTask::executeTask()
 {
     m_total_size = m_queue.size();
 
-    for (int i = 0; i < m_total_max_size; i++)
-        startNext();
+    for (int i = 0; i < m_total_max_size; i++) {
+        QMetaObject::invokeMethod(this, &ConcurrentTask::startNext, Qt::QueuedConnection);
+    }
 }
 
 bool ConcurrentTask::abort()
@@ -91,6 +93,8 @@ void ConcurrentTask::startNext()
     setStepStatus(next->isMultiStep() ? next->getStepStatus() : next->getStatus());
     updateState();
 
+    QCoreApplication::processEvents();
+
     next->start();
 }