mirror of
https://github.com/cookiengineer/audacity
synced 2025-11-03 23:53:55 +01:00
84 lines
2.5 KiB
Diff
84 lines
2.5 KiB
Diff
From 8c9c17ca704f6c2b1469c861497ac7676dd67347 Mon Sep 17 00:00:00 2001
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From: Paul Licameli <paul.licameli@audacityteam.org>
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Date: Sun, 31 Jul 2016 11:55:29 -0400
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Subject: [PATCH 1/3] Mac modal loops won't hang when other code uses old
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Mutiprocessing...
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... if you call the new wxEventLoopBase::SetBusyWaiting(true).
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But this has the undesirable consequence of high CPU usage while the loop idles,
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so this fix must be turned on only as needed by the application.
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See the Audacity bug report that motivated this change:
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http://bugzilla.audacityteam.org/show_bug.cgi?id=1338
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---
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include/wx/evtloop.h | 10 ++++++++++
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src/common/evtloopcmn.cpp | 14 ++++++++++++++
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src/osx/core/evtloop_cf.cpp | 3 ++-
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3 files changed, 26 insertions(+), 1 deletion(-)
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diff --git a/include/wx/evtloop.h b/include/wx/evtloop.h
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index 1133473..4b23610 100644
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--- include/wx/evtloop.h
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+++ include/wx/evtloop.h
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@@ -177,6 +177,16 @@ public:
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// set currently active (running) event loop
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static void SetActive(wxEventLoopBase* loop);
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+#ifdef __WXMAC__
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+#define __WX_EVTLOOP_BUSY_WAITING__
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+ static bool GetBusyWaiting();
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+
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+ // If the argument is true, cause modal dialogs to busy-wait for events,
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+ // which seems to be necessary to avoid hanging when other code is using
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+ // the old Multiprocessing API
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+ static void SetBusyWaiting(bool busyWaiting);
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+#endif
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+
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protected:
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// real implementation of Run()
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diff --git a/src/common/evtloopcmn.cpp b/src/common/evtloopcmn.cpp
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index f7b5138..325fd54 100644
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--- src/common/evtloopcmn.cpp
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+++ src/common/evtloopcmn.cpp
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@@ -56,6 +56,20 @@ void wxEventLoopBase::SetActive(wxEventLoopBase* loop)
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wxTheApp->OnEventLoopEnter(loop);
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}
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+static bool g_busyWaiting = false;
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+
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+/* static */
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+bool wxEventLoopBase::GetBusyWaiting()
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+{
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+ return g_busyWaiting;
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+}
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+
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+/* static */
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+void wxEventLoopBase::SetBusyWaiting(bool busyWaiting)
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+{
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+ g_busyWaiting = busyWaiting;
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+}
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+
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int wxEventLoopBase::Run()
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{
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// event loops are not recursive, you need to create another loop!
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diff --git a/src/osx/core/evtloop_cf.cpp b/src/osx/core/evtloop_cf.cpp
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index 7e70dec..510af80 100644
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--- src/osx/core/evtloop_cf.cpp
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+++ src/osx/core/evtloop_cf.cpp
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@@ -243,7 +243,8 @@ int wxCFEventLoop::DoProcessEvents()
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}
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else
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#endif
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- return DispatchTimeout( m_isInsideYield ? 0 : 1000 );
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+ return DispatchTimeout
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+ (m_isInsideYield || wxEventLoopBase::GetBusyWaiting() ? 0 : 1000 );
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}
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bool wxCFEventLoop::Dispatch()
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--
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2.3.2 (Apple Git-55)
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