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diff --git a/share/qt/Info.plist.cmake.in b/share/qt/Info.plist.cmake.in
--- a/share/qt/Info.plist.cmake.in
+++ b/share/qt/Info.plist.cmake.in
@@ -97,9 +97,6 @@
<key>NSHighResolutionCapable</key>
<string>True</string>
- <key>LSAppNapIsDisabled</key>
- <string>True</string>
-
<key>LSApplicationCategoryType</key>
<string>public.app-category.finance</string>
</dict>
diff --git a/src/qt/CMakeLists.txt b/src/qt/CMakeLists.txt
--- a/src/qt/CMakeLists.txt
+++ b/src/qt/CMakeLists.txt
@@ -140,6 +140,7 @@
target_sources(bitcoin-qt-base PRIVATE
macdockiconhandler.mm
macnotificationhandler.mm
+ macos_appnap.mm
)
set_property(TARGET bitcoin-qt-base PROPERTY AUTOMOC_MOC_OPTIONS "-DQ_OS_MAC")
diff --git a/src/qt/bitcoingui.h b/src/qt/bitcoingui.h
--- a/src/qt/bitcoingui.h
+++ b/src/qt/bitcoingui.h
@@ -20,6 +20,10 @@
#include <QPoint>
#include <QSystemTrayIcon>
+#ifdef Q_OS_MAC
+#include <qt/macos_appnap.h>
+#endif
+
#include <memory>
class ClientModel;
@@ -170,6 +174,10 @@
HelpMessageDialog *helpMessageDialog = nullptr;
ModalOverlay *modalOverlay = nullptr;
+#ifdef Q_OS_MAC
+ CAppNapInhibitor *m_app_nap_inhibitor = nullptr;
+#endif
+
/** Keep track of previous number of blocks, to detect progress */
int prevBlocks = 0;
int spinnerFrame = 0;
diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -208,6 +208,10 @@
&BitcoinGUI::showModalOverlay);
}
#endif
+
+#ifdef Q_OS_MAC
+ m_app_nap_inhibitor = new CAppNapInhibitor;
+#endif
}
BitcoinGUI::~BitcoinGUI() {
@@ -221,6 +225,7 @@
trayIcon->hide();
}
#ifdef Q_OS_MAC
+ delete m_app_nap_inhibitor;
delete appMenuBar;
MacDockIconHandler::cleanup();
#endif
@@ -1068,6 +1073,14 @@
void BitcoinGUI::setNumBlocks(int count, const QDateTime &blockDate,
double nVerificationProgress, bool header) {
+// Disabling macOS App Nap on initial sync, disk and reindex operations.
+#ifdef Q_OS_MAC
+ (m_node.isInitialBlockDownload() || m_node.getReindex() ||
+ m_node.getImporting())
+ ? m_app_nap_inhibitor->disableAppNap()
+ : m_app_nap_inhibitor->enableAppNap();
+#endif
+
if (modalOverlay) {
if (header) {
modalOverlay->setKnownBestHeight(count, blockDate);
diff --git a/src/qt/macos_appnap.h b/src/qt/macos_appnap.h
new file mode 100644
--- /dev/null
+++ b/src/qt/macos_appnap.h
@@ -0,0 +1,23 @@
+// Copyright (c) 2011-2018 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_QT_MACOS_APPNAP_H
+#define BITCOIN_QT_MACOS_APPNAP_H
+
+#include <memory>
+
+class CAppNapInhibitor final {
+public:
+ explicit CAppNapInhibitor();
+ ~CAppNapInhibitor();
+
+ void disableAppNap();
+ void enableAppNap();
+
+private:
+ class CAppNapImpl;
+ std::unique_ptr<CAppNapImpl> impl;
+};
+
+#endif // BITCOIN_QT_MACOS_APPNAP_H
diff --git a/src/qt/macos_appnap.mm b/src/qt/macos_appnap.mm
new file mode 100644
--- /dev/null
+++ b/src/qt/macos_appnap.mm
@@ -0,0 +1,68 @@
+// Copyright (c) 2011-2018 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "macos_appnap.h"
+
+#include <AvailabilityMacros.h>
+#include <Foundation/Foundation.h>
+#include <Foundation/NSProcessInfo.h>
+
+class CAppNapInhibitor::CAppNapImpl {
+public:
+ ~CAppNapImpl() {
+ if (activityId) {
+ enableAppNap();
+ }
+ }
+
+ void disableAppNap() {
+ if (!activityId) {
+ @autoreleasepool {
+ const NSActivityOptions activityOptions =
+ NSActivityUserInitiatedAllowingIdleSystemSleep &
+ ~(NSActivitySuddenTerminationDisabled |
+ NSActivityAutomaticTerminationDisabled);
+
+ id processInfo = [NSProcessInfo processInfo];
+ if ([processInfo respondsToSelector:@selector
+ (beginActivityWithOptions:reason:)]) {
+ activityId = [processInfo
+ beginActivityWithOptions:activityOptions
+ reason:@"Temporarily disable App Nap "
+ @"for bitcoin-qt."];
+ [activityId retain];
+ }
+ }
+ }
+ }
+
+ void enableAppNap() {
+ if (activityId) {
+ @autoreleasepool {
+ id processInfo = [NSProcessInfo processInfo];
+ if ([processInfo respondsToSelector:@selector(endActivity:)]) {
+ [processInfo endActivity:activityId];
+ }
+
+ [activityId release];
+ activityId = nil;
+ }
+ }
+ }
+
+private:
+ NSObject *activityId;
+};
+
+CAppNapInhibitor::CAppNapInhibitor() : impl(new CAppNapImpl()) {}
+
+CAppNapInhibitor::~CAppNapInhibitor() = default;
+
+void CAppNapInhibitor::disableAppNap() {
+ impl->disableAppNap();
+}
+
+void CAppNapInhibitor::enableAppNap() {
+ impl->enableAppNap();
+}

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