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tdf#101376 don't detach thread if it is the main thread on macOS

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On macOS, many AWT classes do their work on the main thread
deep in native methods in the java.awt.* classes. The problem
is that Oracle's and OpenJDK's JVMs don't bracket their
"perform on main thread" native calls with "attach/detach
current thread" calls to the JVM.

Change-Id: I0859dc9e20f34bd0b43bb321898507764fd530fb
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/157985
Tested-by: Jenkins
Reviewed-by: Patrick Luby <plubius@neooffice.org>
This commit is contained in:
Patrick Luby 2023-10-14 21:13:26 -04:00
parent db0681effb
commit fc69d6b227
2 changed files with 21 additions and 0 deletions
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6
stoc/Library_javavm.mk
View file

@ -31,4 +31,10 @@ $(eval $(call gb_Library_add_exception_objects,javavm,\
stoc/source/javavm/jvmargs \
))
ifeq ($(OS),MACOSX)
$(eval $(call gb_Library_use_system_darwin_frameworks,javavm,\
CoreFoundation \
))
endif
# vim:set noet sw=4 ts=4:

15
stoc/source/javavm/javavm.cxx
View file

@ -79,6 +79,12 @@
#define TIMEZONE "MET"
#endif
#ifdef MACOSX
#include <premac.h>
#include <CoreFoundation/CoreFoundation.h>
#include <postmac.h>
#endif
/* Within this implementation of the com.sun.star.java.JavaVirtualMachine
* service and com.sun.star.java.theJavaVirtualMachine singleton, the method
* com.sun.star.java.XJavaVM.getJavaVM relies on the following:
@ -459,6 +465,15 @@ public:
explicit DetachCurrentThread(JavaVM * jvm): m_jvm(jvm) {}
~DetachCurrentThread() {
#ifdef MACOSX
// tdf#101376 don't detach thread if it is the main thread on macOS
// On macOS, many AWT classes do their work on the main thread
// deep in native methods in the java.awt.* classes. The problem
// is that Oracle's and OpenJDK's JVMs don't bracket their
// "perform on main thread" native calls with "attach/detach
// current thread" calls to the JVM.
if (CFRunLoopGetCurrent() != CFRunLoopGetMain())
#endif
if (m_jvm->DetachCurrentThread() != 0) {
OSL_ASSERT(false);
}