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Make some changes to the way that GMainContext works:
Sat Jun 30 15:49:10 2001 Owen Taylor <otaylor@redhat.com> * glib/gmain.[ch]: (Mostly patch from Sebastian Wilhemi) Make some changes to the way that GMainContext works: - a GMainContext is no longer associated with a single thread, but any thread can acquire ownership of thread and iterate. - There is a facility g_main_context_wait() for non-owner-threads to wait either for ownership or for a condition to be broadcast. - For efficiency, GMainLoop just piggybacks of of the loops mutex / condition instead of having a separate mutex/condition for each GMainLoop. * glib/gthread.[ch]: Remove hacks to store the thread's GMainContext in the GThread structures, since we no longer have the GMainContext <=> GThread correspondence. * glib/gmain.[ch]: Make g_main_context_wakeup() public so someone could completely duplicate GMainLoop with the public API. * tests/mainloop-test: Fix up to the new API. Decidedly doesn't work at the moment, but that may be the IO channel changes, or preexisting locking problems.
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ChangeLog
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ChangeLog
@ -1,3 +1,33 @@
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Sat Jun 30 15:49:10 2001 Owen Taylor <otaylor@redhat.com>
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* glib/gmain.[ch]: (Mostly patch from Sebastian Wilhemi)
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Make some changes to the way that GMainContext works:
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- a GMainContext is no longer associated with a single
|
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thread, but any thread can acquire ownership
|
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of thread and iterate.
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- There is a facility g_main_context_wait() for
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non-owner-threads to wait either for ownership
|
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or for a condition to be broadcast.
|
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- For efficiency, GMainLoop just piggybacks of
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of the loops mutex / condition instead of
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having a separate mutex/condition for each
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GMainLoop.
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* glib/gthread.[ch]: Remove hacks to store the thread's
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GMainContext in the GThread structures, since we
|
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no longer have the GMainContext <=> GThread correspondence.
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* glib/gmain.[ch]: Make g_main_context_wakeup() public
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so someone could completely duplicate GMainLoop
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with the public API.
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* tests/mainloop-test: Fix up to the new API. Decidedly
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doesn't work at the moment, but that may be the IO
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channel changes, or preexisting locking problems.
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Sat Jun 30 13:18:28 2001 Owen Taylor <otaylor@redhat.com>
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* glib/gstrfuncs.c glib/gstring.h: Try compiling
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@ -1,3 +1,33 @@
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Sat Jun 30 15:49:10 2001 Owen Taylor <otaylor@redhat.com>
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* glib/gmain.[ch]: (Mostly patch from Sebastian Wilhemi)
|
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Make some changes to the way that GMainContext works:
|
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|
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- a GMainContext is no longer associated with a single
|
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thread, but any thread can acquire ownership
|
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of thread and iterate.
|
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|
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- There is a facility g_main_context_wait() for
|
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non-owner-threads to wait either for ownership
|
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or for a condition to be broadcast.
|
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|
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- For efficiency, GMainLoop just piggybacks of
|
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of the loops mutex / condition instead of
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having a separate mutex/condition for each
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GMainLoop.
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* glib/gthread.[ch]: Remove hacks to store the thread's
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GMainContext in the GThread structures, since we
|
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no longer have the GMainContext <=> GThread correspondence.
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* glib/gmain.[ch]: Make g_main_context_wakeup() public
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so someone could completely duplicate GMainLoop
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with the public API.
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* tests/mainloop-test: Fix up to the new API. Decidedly
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doesn't work at the moment, but that may be the IO
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channel changes, or preexisting locking problems.
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Sat Jun 30 13:18:28 2001 Owen Taylor <otaylor@redhat.com>
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* glib/gstrfuncs.c glib/gstring.h: Try compiling
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@ -1,3 +1,33 @@
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Sat Jun 30 15:49:10 2001 Owen Taylor <otaylor@redhat.com>
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* glib/gmain.[ch]: (Mostly patch from Sebastian Wilhemi)
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Make some changes to the way that GMainContext works:
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|
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- a GMainContext is no longer associated with a single
|
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thread, but any thread can acquire ownership
|
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of thread and iterate.
|
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|
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- There is a facility g_main_context_wait() for
|
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non-owner-threads to wait either for ownership
|
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or for a condition to be broadcast.
|
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|
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- For efficiency, GMainLoop just piggybacks of
|
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of the loops mutex / condition instead of
|
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having a separate mutex/condition for each
|
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GMainLoop.
|
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|
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* glib/gthread.[ch]: Remove hacks to store the thread's
|
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GMainContext in the GThread structures, since we
|
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no longer have the GMainContext <=> GThread correspondence.
|
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|
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* glib/gmain.[ch]: Make g_main_context_wakeup() public
|
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so someone could completely duplicate GMainLoop
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with the public API.
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* tests/mainloop-test: Fix up to the new API. Decidedly
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doesn't work at the moment, but that may be the IO
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channel changes, or preexisting locking problems.
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Sat Jun 30 13:18:28 2001 Owen Taylor <otaylor@redhat.com>
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* glib/gstrfuncs.c glib/gstring.h: Try compiling
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|
@ -1,3 +1,33 @@
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Sat Jun 30 15:49:10 2001 Owen Taylor <otaylor@redhat.com>
|
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|
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* glib/gmain.[ch]: (Mostly patch from Sebastian Wilhemi)
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Make some changes to the way that GMainContext works:
|
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|
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- a GMainContext is no longer associated with a single
|
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thread, but any thread can acquire ownership
|
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of thread and iterate.
|
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|
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- There is a facility g_main_context_wait() for
|
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non-owner-threads to wait either for ownership
|
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or for a condition to be broadcast.
|
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|
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- For efficiency, GMainLoop just piggybacks of
|
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of the loops mutex / condition instead of
|
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having a separate mutex/condition for each
|
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GMainLoop.
|
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|
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* glib/gthread.[ch]: Remove hacks to store the thread's
|
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GMainContext in the GThread structures, since we
|
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no longer have the GMainContext <=> GThread correspondence.
|
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|
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* glib/gmain.[ch]: Make g_main_context_wakeup() public
|
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so someone could completely duplicate GMainLoop
|
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with the public API.
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* tests/mainloop-test: Fix up to the new API. Decidedly
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doesn't work at the moment, but that may be the IO
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channel changes, or preexisting locking problems.
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Sat Jun 30 13:18:28 2001 Owen Taylor <otaylor@redhat.com>
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* glib/gstrfuncs.c glib/gstring.h: Try compiling
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|
@ -1,3 +1,33 @@
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Sat Jun 30 15:49:10 2001 Owen Taylor <otaylor@redhat.com>
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* glib/gmain.[ch]: (Mostly patch from Sebastian Wilhemi)
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Make some changes to the way that GMainContext works:
|
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|
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- a GMainContext is no longer associated with a single
|
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thread, but any thread can acquire ownership
|
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of thread and iterate.
|
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|
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- There is a facility g_main_context_wait() for
|
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non-owner-threads to wait either for ownership
|
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or for a condition to be broadcast.
|
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|
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- For efficiency, GMainLoop just piggybacks of
|
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of the loops mutex / condition instead of
|
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having a separate mutex/condition for each
|
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GMainLoop.
|
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|
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* glib/gthread.[ch]: Remove hacks to store the thread's
|
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GMainContext in the GThread structures, since we
|
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no longer have the GMainContext <=> GThread correspondence.
|
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|
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* glib/gmain.[ch]: Make g_main_context_wakeup() public
|
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so someone could completely duplicate GMainLoop
|
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with the public API.
|
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|
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* tests/mainloop-test: Fix up to the new API. Decidedly
|
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doesn't work at the moment, but that may be the IO
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channel changes, or preexisting locking problems.
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Sat Jun 30 13:18:28 2001 Owen Taylor <otaylor@redhat.com>
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* glib/gstrfuncs.c glib/gstring.h: Try compiling
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|
@ -1,3 +1,33 @@
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Sat Jun 30 15:49:10 2001 Owen Taylor <otaylor@redhat.com>
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|
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* glib/gmain.[ch]: (Mostly patch from Sebastian Wilhemi)
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Make some changes to the way that GMainContext works:
|
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|
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- a GMainContext is no longer associated with a single
|
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thread, but any thread can acquire ownership
|
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of thread and iterate.
|
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|
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- There is a facility g_main_context_wait() for
|
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non-owner-threads to wait either for ownership
|
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or for a condition to be broadcast.
|
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|
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- For efficiency, GMainLoop just piggybacks of
|
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of the loops mutex / condition instead of
|
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having a separate mutex/condition for each
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GMainLoop.
|
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|
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* glib/gthread.[ch]: Remove hacks to store the thread's
|
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GMainContext in the GThread structures, since we
|
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no longer have the GMainContext <=> GThread correspondence.
|
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|
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* glib/gmain.[ch]: Make g_main_context_wakeup() public
|
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so someone could completely duplicate GMainLoop
|
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with the public API.
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* tests/mainloop-test: Fix up to the new API. Decidedly
|
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doesn't work at the moment, but that may be the IO
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channel changes, or preexisting locking problems.
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Sat Jun 30 13:18:28 2001 Owen Taylor <otaylor@redhat.com>
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* glib/gstrfuncs.c glib/gstring.h: Try compiling
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|
@ -1,3 +1,33 @@
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Sat Jun 30 15:49:10 2001 Owen Taylor <otaylor@redhat.com>
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* glib/gmain.[ch]: (Mostly patch from Sebastian Wilhemi)
|
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Make some changes to the way that GMainContext works:
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|
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- a GMainContext is no longer associated with a single
|
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thread, but any thread can acquire ownership
|
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of thread and iterate.
|
||||
|
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- There is a facility g_main_context_wait() for
|
||||
non-owner-threads to wait either for ownership
|
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or for a condition to be broadcast.
|
||||
|
||||
- For efficiency, GMainLoop just piggybacks of
|
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of the loops mutex / condition instead of
|
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having a separate mutex/condition for each
|
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GMainLoop.
|
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|
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* glib/gthread.[ch]: Remove hacks to store the thread's
|
||||
GMainContext in the GThread structures, since we
|
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no longer have the GMainContext <=> GThread correspondence.
|
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|
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* glib/gmain.[ch]: Make g_main_context_wakeup() public
|
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so someone could completely duplicate GMainLoop
|
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with the public API.
|
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|
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* tests/mainloop-test: Fix up to the new API. Decidedly
|
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doesn't work at the moment, but that may be the IO
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channel changes, or preexisting locking problems.
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|
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Sat Jun 30 13:18:28 2001 Owen Taylor <otaylor@redhat.com>
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* glib/gstrfuncs.c glib/gstring.h: Try compiling
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|
@ -1,3 +1,33 @@
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Sat Jun 30 15:49:10 2001 Owen Taylor <otaylor@redhat.com>
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|
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* glib/gmain.[ch]: (Mostly patch from Sebastian Wilhemi)
|
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Make some changes to the way that GMainContext works:
|
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|
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- a GMainContext is no longer associated with a single
|
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thread, but any thread can acquire ownership
|
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of thread and iterate.
|
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|
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- There is a facility g_main_context_wait() for
|
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non-owner-threads to wait either for ownership
|
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or for a condition to be broadcast.
|
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|
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- For efficiency, GMainLoop just piggybacks of
|
||||
of the loops mutex / condition instead of
|
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having a separate mutex/condition for each
|
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GMainLoop.
|
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|
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* glib/gthread.[ch]: Remove hacks to store the thread's
|
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GMainContext in the GThread structures, since we
|
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no longer have the GMainContext <=> GThread correspondence.
|
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|
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* glib/gmain.[ch]: Make g_main_context_wakeup() public
|
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so someone could completely duplicate GMainLoop
|
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with the public API.
|
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|
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* tests/mainloop-test: Fix up to the new API. Decidedly
|
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doesn't work at the moment, but that may be the IO
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channel changes, or preexisting locking problems.
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Sat Jun 30 13:18:28 2001 Owen Taylor <otaylor@redhat.com>
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* glib/gstrfuncs.c glib/gstring.h: Try compiling
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644
glib/gmain.c
644
glib/gmain.c
@ -73,16 +73,31 @@ typedef enum
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G_SOURCE_CAN_RECURSE = 1 << (G_HOOK_FLAG_USER_SHIFT + 1)
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} GSourceFlags;
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#ifdef G_THREADS_ENABLED
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typedef struct _GMainWaiter GMainWaiter;
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struct _GMainWaiter
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{
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GCond *cond;
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GMutex *mutex;
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};
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#endif
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struct _GMainContext
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{
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#ifdef G_THREADS_ENABLED
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/* The following lock is used for both the list of sources
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* and the list of poll records
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*/
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GMutex *mutex;
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GThread *thread;
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GStaticMutex mutex;
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GCond *cond;
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GThread *owner;
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guint owner_count;
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GSList *waiters;
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#endif
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guint ref_count;
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GPtrArray *pending_dispatches;
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gint timeout; /* Timeout for current iteration */
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@ -132,11 +147,6 @@ struct _GMainLoop
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GMainContext *context;
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gboolean is_running;
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guint ref_count;
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#ifdef G_THREADS_ENABLED
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GMutex *mutex;
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GCond *sem_cond;
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#endif /* G_THREADS_ENABLED */
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};
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struct _GTimeoutSource
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@ -154,15 +164,13 @@ struct _GPollRec
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};
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#ifdef G_THREADS_ENABLED
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#define LOCK_CONTEXT(context) g_mutex_lock(context->mutex)
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#define UNLOCK_CONTEXT(context) g_mutex_unlock(context->mutex)
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#define LOCK_LOOP(loop) g_mutex_lock(loop->mutex)
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#define UNLOCK_LOOP(loop) g_mutex_unlock(loop->mutex)
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#define LOCK_CONTEXT(context) g_static_mutex_lock (&context->mutex)
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#define UNLOCK_CONTEXT(context) g_static_mutex_unlock (&context->mutex)
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#define G_THREAD_SELF g_thread_self ()
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#else
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#define LOCK_CONTEXT(context) (void)0
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#define UNLOCK_CONTEXT(context) (void)0
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#define LOCK_LOOP(context) (void)0
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#define UNLOCK_LOOP(context) (void)0
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#define G_THREAD_SELF NULL
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#endif
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#define SOURCE_DESTROYED(source) (((source)->flags & G_HOOK_FLAG_ACTIVE) == 0)
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@ -194,7 +202,7 @@ static void g_main_context_add_poll_unlocked (GMainContext *context,
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GPollFD *fd);
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static void g_main_context_remove_poll_unlocked (GMainContext *context,
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GPollFD *fd);
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static void g_main_context_wakeup (GMainContext *context);
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static void g_main_context_wakeup_unlocked (GMainContext *context);
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static gboolean g_timeout_prepare (GSource *source,
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gint *timeout);
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@ -494,17 +502,38 @@ g_poll (GPollFD *fds,
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#endif /* !HAVE_POLL */
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/* Called to clean up when a thread terminates
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*/
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/**
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* g_main_context_ref:
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* @loop: a #GMainContext
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*
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* Increases the reference count on a #GMainContext object by one.
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**/
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void
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g_main_context_destroy (GMainContext *context)
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g_main_context_ref (GMainContext *context)
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{
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g_return_if_fail (context != NULL);
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g_return_if_fail (context->ref_count > 0);
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LOCK_CONTEXT (context);
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context->ref_count++;
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UNLOCK_CONTEXT (context);
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}
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static void
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g_main_context_unref_and_unlock (GMainContext *context)
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{
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GSource *source;
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/* We need the lock here only because g_source_destroy expects
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* to be able to unlock when destroying the source's data
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*/
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LOCK_CONTEXT (context);
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context->ref_count--;
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if (context->ref_count != 0)
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{
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UNLOCK_CONTEXT (context);
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return;
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}
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source = context->source_list;
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while (source)
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{
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@ -515,7 +544,7 @@ g_main_context_destroy (GMainContext *context)
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UNLOCK_CONTEXT (context);
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#ifdef G_THREADS_ENABLED
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g_mutex_free (context->mutex);
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g_static_mutex_free (&context->mutex);
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#endif
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g_ptr_array_free (context->pending_dispatches, TRUE);
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@ -538,49 +567,44 @@ g_main_context_destroy (GMainContext *context)
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g_free (context);
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}
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/* This is an imcomplete (only the members up till context) version of
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* GRealThread from gthread.h. Keep them in sync */
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typedef struct _GRealThread GRealThread;
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struct _GRealThread
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/**
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* g_main_context_unref:
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* @loop: a #GMainContext
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*
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* Decreases the reference count on a #GMainContext object by one. If
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* the result is zero, free the context and free all associated memory.
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**/
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void
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g_main_context_unref (GMainContext *context)
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{
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GThread thread;
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GMainContext *context;
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};
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g_return_if_fail (context != NULL);
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g_return_if_fail (context->ref_count > 0);
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LOCK_CONTEXT (context);
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g_main_context_unref_and_unlock (context);
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}
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/**
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* g_main_context_get:
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* @thread: a #GThread
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* g_main_context_new:
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*
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* Retrieves the main loop context for a particular thread. This
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* will create the main context for the thread if none previously
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* existed. The context will exist until the thread terminates.
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* Creates a new #GMainContext strcuture
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*
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* Return value: the main loop context for @thread.
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* Return value: the new #GMainContext
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**/
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GMainContext *
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g_main_context_get (GThread *thread)
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g_main_context_new ()
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{
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GRealThread *real_thread = (GRealThread*)thread;
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GMainContext *context;
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g_return_val_if_fail (thread != NULL, NULL);
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if (g_thread_supported ())
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context = real_thread->context;
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else
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context = default_main_context;
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if (!context)
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||||
{
|
||||
context = g_new0 (GMainContext, 1);
|
||||
GMainContext *context = g_new0 (GMainContext, 1);
|
||||
|
||||
#ifdef G_THREADS_ENABLED
|
||||
if (g_thread_supported ())
|
||||
context->mutex = g_mutex_new();
|
||||
g_static_mutex_init (&context->mutex);
|
||||
|
||||
context->thread = thread;
|
||||
context->owner = NULL;
|
||||
context->waiters = NULL;
|
||||
#endif
|
||||
|
||||
context->ref_count = 1;
|
||||
|
||||
context->next_id = 1;
|
||||
|
||||
context->source_list = NULL;
|
||||
@ -624,12 +648,6 @@ g_main_context_get (GThread *thread)
|
||||
}
|
||||
#endif
|
||||
|
||||
if (g_thread_supported ())
|
||||
real_thread->context = context;
|
||||
else
|
||||
default_main_context = context;
|
||||
}
|
||||
|
||||
return context;
|
||||
}
|
||||
|
||||
@ -650,7 +668,7 @@ g_main_context_default (void)
|
||||
G_LOCK (main_loop);
|
||||
|
||||
if (!default_main_context)
|
||||
default_main_context = g_main_context_get (g_thread_self ());
|
||||
default_main_context = g_main_context_new ();
|
||||
|
||||
G_UNLOCK (main_loop);
|
||||
|
||||
@ -784,7 +802,7 @@ g_source_attach (GSource *source,
|
||||
|
||||
#ifdef G_THREADS_ENABLED
|
||||
/* Now wake up the main loop if it is waiting in the poll() */
|
||||
g_main_context_wakeup (context);
|
||||
g_main_context_wakeup_unlocked (context);
|
||||
#endif
|
||||
|
||||
UNLOCK_CONTEXT (context);
|
||||
@ -1623,6 +1641,177 @@ next_valid_source (GMainContext *context,
|
||||
return new_source;
|
||||
}
|
||||
|
||||
/**
|
||||
* g_main_context_acquire:
|
||||
* @context: a #GMainContext
|
||||
*
|
||||
* Tries to become the owner of the specified context.
|
||||
* If some other context is the owner of the context,
|
||||
* returns %FALSE immediately. Ownership is properly
|
||||
* recursive: the owner can require ownership again
|
||||
* and will release ownership when g_main_context_release()
|
||||
* is called as many times as g_main_context_acquire().
|
||||
*
|
||||
* You must be the owner of a context before you
|
||||
* can call g_main_context_prepare(), g_main_context_query(),
|
||||
* g_main_context_check(), g_main_context_dispatch().
|
||||
*
|
||||
* Return value: %TRUE if the operation succeeded, and
|
||||
* this thread is now the owner of @context.
|
||||
**/
|
||||
gboolean
|
||||
g_main_context_acquire (GMainContext *context)
|
||||
{
|
||||
#ifdef G_THREAD_ENABLED
|
||||
gboolean result = FALSE;
|
||||
GThread *self = G_THREAD_SELF;
|
||||
|
||||
if (context == NULL)
|
||||
context = g_main_context_default ();
|
||||
|
||||
LOCK_CONTEXT (context);
|
||||
|
||||
if (!context->owner)
|
||||
context->owner = self;
|
||||
|
||||
if (context->owner == self)
|
||||
{
|
||||
context->owner_count++;
|
||||
result = TRUE;
|
||||
}
|
||||
|
||||
UNLOCK_CONTEXT (context);
|
||||
|
||||
return result;
|
||||
#else /* !G_THREAD_ENABLED */
|
||||
return TRUE;
|
||||
#endif /* G_THREAD_ENABLED */
|
||||
}
|
||||
|
||||
/**
|
||||
* g_main_context_release:
|
||||
* @context: a #GMainContext
|
||||
*
|
||||
* Release ownership of a context previously acquired by this thread
|
||||
* with g_main_context_acquire(). If the context was acquired multiple
|
||||
* times, the only release ownership when g_main_context_release()
|
||||
* is called as many times as it was acquired.
|
||||
**/
|
||||
void
|
||||
g_main_context_release (GMainContext *context)
|
||||
{
|
||||
#ifdef G_THREAD_ENABLED
|
||||
GMainWaiter *waiter_to_notify = NULL;
|
||||
|
||||
if (context == NULL)
|
||||
context = g_main_context_default ();
|
||||
|
||||
LOCK_CONTEXT (context);
|
||||
|
||||
context->owner_count--;
|
||||
if (context->owner_count == 0)
|
||||
{
|
||||
context->owner = NULL;
|
||||
|
||||
if (context->waiters)
|
||||
{
|
||||
waiter_to_notify = context->waiters;
|
||||
context->waiters = g_slist_delete_link (context->waiters,
|
||||
context->waiters);
|
||||
}
|
||||
}
|
||||
|
||||
if (waiter_to_notify)
|
||||
{
|
||||
gboolean loop_internal_waiter =
|
||||
(waiter_to_notify->mutex == g_static_mutex_get_mutex (&context->mutex));
|
||||
|
||||
if (!loop_internal_waiter)
|
||||
g_mutex_lock (waiter_to_notify->mutex);
|
||||
|
||||
g_cond_signal (waiter_to_notify->cond);
|
||||
|
||||
if (!loop_internal_waiter)
|
||||
g_mutex_unlock (waiter_to_notify->mutex);
|
||||
else
|
||||
UNLOCK_CONTEXT (context);
|
||||
}
|
||||
else
|
||||
UNLOCK_CONTEXT (context);
|
||||
|
||||
return result;
|
||||
#endif /* G_THREAD_ENABLED */
|
||||
}
|
||||
|
||||
/**
|
||||
* g_main_context_wait:
|
||||
* @context: a #GMainContext
|
||||
* @cond: a condition variable
|
||||
* @mutex: a mutex, currently held
|
||||
*
|
||||
* Tries to become the owner of the specified context,
|
||||
* as with g_main_context_acquire. But if another thread
|
||||
* is the owner, atomically drop @mutex and wait on
|
||||
* @cond until wait until that owner releases
|
||||
* ownership or until @cond is signaled, then
|
||||
* try again (once) to become the owner.
|
||||
*
|
||||
* Return value: %TRUE if the operation succeeded, and
|
||||
* this thread is now the owner of @context.
|
||||
**/
|
||||
gboolean
|
||||
g_main_context_wait (GMainContext *context,
|
||||
GCond *cond,
|
||||
GMutex *mutex)
|
||||
{
|
||||
#ifdef G_THREAD_ENABLED
|
||||
gboolean result = FALSE;
|
||||
GThread *self = G_THREAD_SELF;
|
||||
gboolean loop_internal_waiter;
|
||||
|
||||
if (context == NULL)
|
||||
context = g_main_context_default ();
|
||||
|
||||
loop_internal_waiter = (mutex == g_static_mutex_get_mutex (&context->mutex));
|
||||
|
||||
if (!loop_internal_waiter)
|
||||
LOCK_CONTEXT (context);
|
||||
|
||||
if (context->owner && context->owner != self)
|
||||
{
|
||||
GMainWaiter waiter;
|
||||
|
||||
waiter.cond = cond;
|
||||
waiter.mutex = mutex;
|
||||
|
||||
context->waiters = g_slist_append (context->waiters, &waiter);
|
||||
|
||||
if (!loop_internal_waiter)
|
||||
UNLOCK_CONTEXT (context);
|
||||
g_cond_wait (cond, mutex);
|
||||
if (!loop_internal_waiter)
|
||||
LOCK_CONTEXT (context);
|
||||
|
||||
context->waiters = g_slist_remove (context->waiters, &waiter);
|
||||
}
|
||||
|
||||
if (!context->owner)
|
||||
context->owner = self;
|
||||
|
||||
if (context->owner == self)
|
||||
{
|
||||
context->owner_count++;
|
||||
result = TRUE;
|
||||
}
|
||||
|
||||
if (!loop_internal_waiter)
|
||||
UNLOCK_CONTEXT (context);
|
||||
|
||||
return result;
|
||||
#else /* !G_THREAD_ENABLED */
|
||||
return TRUE;
|
||||
#endif /* G_THREAD_ENABLED */
|
||||
}
|
||||
|
||||
/**
|
||||
* g_main_context_prepare:
|
||||
@ -1943,63 +2132,88 @@ g_main_context_dispatch (GMainContext *context)
|
||||
UNLOCK_CONTEXT (context);
|
||||
}
|
||||
|
||||
/* HOLDS context lock */
|
||||
static gboolean
|
||||
g_main_context_iterate (GMainContext *context,
|
||||
gboolean block,
|
||||
gboolean dispatch)
|
||||
gboolean dispatch,
|
||||
GThread *self)
|
||||
{
|
||||
gint max_priority;
|
||||
gint timeout;
|
||||
gboolean some_ready;
|
||||
gint nfds, new_nfds;
|
||||
GPollFD *fds;
|
||||
gint nfds, allocated_nfds;
|
||||
GPollFD *fds = NULL;
|
||||
|
||||
some_ready = g_main_context_prepare (context, &max_priority);
|
||||
UNLOCK_CONTEXT (context);
|
||||
|
||||
do
|
||||
#ifdef G_THREADS_ENABLED
|
||||
if (!g_main_context_acquire (context))
|
||||
{
|
||||
gboolean got_ownership;
|
||||
|
||||
g_return_val_if_fail (g_thread_supported (), FALSE);
|
||||
|
||||
if (!block)
|
||||
return FALSE;
|
||||
|
||||
LOCK_CONTEXT (context);
|
||||
|
||||
if (!context->cond)
|
||||
context->cond = g_cond_new ();
|
||||
|
||||
got_ownership = g_main_context_wait (context,
|
||||
context->cond,
|
||||
g_static_mutex_get_mutex (&context->mutex));
|
||||
|
||||
if (!got_ownership)
|
||||
{
|
||||
UNLOCK_CONTEXT (context);
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
else
|
||||
LOCK_CONTEXT (context);
|
||||
#endif G_THREADS_ENABLED
|
||||
|
||||
if (!context->cached_poll_array)
|
||||
{
|
||||
context->cached_poll_array_size = context->n_poll_records;
|
||||
context->cached_poll_array = g_new (GPollFD, context->n_poll_records);
|
||||
}
|
||||
|
||||
allocated_nfds = context->cached_poll_array_size;
|
||||
fds = context->cached_poll_array;
|
||||
|
||||
UNLOCK_CONTEXT (context);
|
||||
|
||||
some_ready = g_main_context_prepare (context, &max_priority);
|
||||
|
||||
while ((nfds = g_main_context_query (context, max_priority, &timeout, fds,
|
||||
allocated_nfds)) > allocated_nfds)
|
||||
{
|
||||
LOCK_CONTEXT (context);
|
||||
|
||||
if (context->cached_poll_array)
|
||||
{
|
||||
nfds = context->cached_poll_array_size;
|
||||
fds = context->cached_poll_array;
|
||||
context->cached_poll_array = NULL;
|
||||
}
|
||||
else
|
||||
{
|
||||
nfds = context->cached_poll_array_size = context->n_poll_records;
|
||||
fds = g_new (GPollFD, nfds);
|
||||
}
|
||||
|
||||
g_free (fds);
|
||||
context->cached_poll_array_size = allocated_nfds = nfds;
|
||||
context->cached_poll_array = fds = g_new (GPollFD, nfds);
|
||||
UNLOCK_CONTEXT (context);
|
||||
|
||||
new_nfds = g_main_context_query (context, max_priority,
|
||||
&timeout, fds, nfds);
|
||||
}
|
||||
while (new_nfds > nfds);
|
||||
|
||||
if (!block)
|
||||
timeout = 0;
|
||||
|
||||
g_main_context_poll (context, timeout, max_priority,
|
||||
fds, new_nfds);
|
||||
|
||||
g_main_context_check (context,
|
||||
max_priority,
|
||||
fds, new_nfds);
|
||||
|
||||
LOCK_CONTEXT (context);
|
||||
|
||||
g_assert (!context->cached_poll_array);
|
||||
g_main_context_poll (context, timeout, max_priority, fds, nfds);
|
||||
|
||||
context->cached_poll_array = fds;
|
||||
context->cached_poll_array_size = nfds;
|
||||
|
||||
UNLOCK_CONTEXT (context);
|
||||
g_main_context_check (context, max_priority, fds, nfds);
|
||||
|
||||
if (dispatch)
|
||||
g_main_context_dispatch (context);
|
||||
|
||||
#ifdef G_THREADS_ENABLED
|
||||
g_main_context_release (context);
|
||||
#endif /* G_THREADS_ENABLED */
|
||||
|
||||
LOCK_CONTEXT (context);
|
||||
|
||||
return some_ready;
|
||||
}
|
||||
@ -2015,10 +2229,16 @@ g_main_context_iterate (GMainContext *context,
|
||||
gboolean
|
||||
g_main_context_pending (GMainContext *context)
|
||||
{
|
||||
gboolean retval;
|
||||
|
||||
if (!context)
|
||||
context = g_main_context_default();
|
||||
|
||||
LOCK_CONTEXT (context);
|
||||
retval = g_main_context_iterate (context, FALSE, FALSE, G_THREAD_SELF);
|
||||
UNLOCK_CONTEXT (context);
|
||||
|
||||
return g_main_context_iterate (context, FALSE, FALSE);
|
||||
return retval;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -2040,10 +2260,16 @@ g_main_context_pending (GMainContext *context)
|
||||
gboolean
|
||||
g_main_context_iteration (GMainContext *context, gboolean may_block)
|
||||
{
|
||||
gboolean retval;
|
||||
|
||||
if (!context)
|
||||
context = g_main_context_default();
|
||||
|
||||
return g_main_context_iterate (context, may_block, TRUE);
|
||||
LOCK_CONTEXT (context);
|
||||
retval = g_main_context_iterate (context, may_block, TRUE, G_THREAD_SELF);
|
||||
UNLOCK_CONTEXT (context);
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -2066,19 +2292,13 @@ g_main_loop_new (GMainContext *context,
|
||||
if (!context)
|
||||
context = g_main_context_default();
|
||||
|
||||
g_main_context_ref (context);
|
||||
|
||||
loop = g_new0 (GMainLoop, 1);
|
||||
loop->context = context;
|
||||
loop->is_running = is_running != FALSE;
|
||||
loop->ref_count = 1;
|
||||
|
||||
#ifdef G_THREADS_ENABLED
|
||||
if (g_thread_supported ())
|
||||
loop->mutex = g_mutex_new ();
|
||||
else
|
||||
loop->mutex = NULL;
|
||||
loop->sem_cond = NULL;
|
||||
#endif /* G_THREADS_ENABLED */
|
||||
|
||||
return loop;
|
||||
}
|
||||
|
||||
@ -2094,24 +2314,29 @@ GMainLoop *
|
||||
g_main_loop_ref (GMainLoop *loop)
|
||||
{
|
||||
g_return_val_if_fail (loop != NULL, NULL);
|
||||
g_return_val_if_fail (loop->ref_count > 0, NULL);
|
||||
|
||||
LOCK_LOOP (loop);
|
||||
LOCK_CONTEXT (loop->context);
|
||||
loop->ref_count++;
|
||||
UNLOCK_LOOP (loop);
|
||||
UNLOCK_CONTEXT (loop->context);
|
||||
|
||||
return loop;
|
||||
}
|
||||
|
||||
static void
|
||||
main_loop_destroy (GMainLoop *loop)
|
||||
g_main_loop_unref_and_unlock (GMainLoop *loop)
|
||||
{
|
||||
#ifdef G_THREADS_ENABLED
|
||||
g_mutex_free (loop->mutex);
|
||||
if (loop->sem_cond)
|
||||
g_cond_free (loop->sem_cond);
|
||||
#endif /* G_THREADS_ENABLED */
|
||||
|
||||
loop->ref_count--;
|
||||
if (loop->ref_count == 0)
|
||||
{
|
||||
/* When the ref_count is 0, there can be nobody else using the
|
||||
* loop, so it is safe to unlock before destroying.
|
||||
*/
|
||||
g_main_context_unref_and_unlock (loop->context);
|
||||
g_free (loop);
|
||||
}
|
||||
else
|
||||
UNLOCK_CONTEXT (loop->context);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -2127,19 +2352,9 @@ g_main_loop_unref (GMainLoop *loop)
|
||||
g_return_if_fail (loop != NULL);
|
||||
g_return_if_fail (loop->ref_count > 0);
|
||||
|
||||
LOCK_LOOP (loop);
|
||||
LOCK_CONTEXT (loop->context);
|
||||
|
||||
loop->ref_count--;
|
||||
if (loop->ref_count == 0)
|
||||
{
|
||||
/* When the ref_count is 0, there can be nobody else using the
|
||||
* loop, so it is safe to unlock before destroying.
|
||||
*/
|
||||
UNLOCK_LOOP (loop);
|
||||
main_loop_destroy (loop);
|
||||
}
|
||||
else
|
||||
UNLOCK_LOOP (loop);
|
||||
g_main_loop_unref_and_unlock (loop);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -2154,70 +2369,71 @@ g_main_loop_unref (GMainLoop *loop)
|
||||
void
|
||||
g_main_loop_run (GMainLoop *loop)
|
||||
{
|
||||
GThread *self = G_THREAD_SELF;
|
||||
|
||||
g_return_if_fail (loop != NULL);
|
||||
g_return_if_fail (loop->ref_count > 0);
|
||||
|
||||
/* The assumption here is that a reference is held to the loop
|
||||
* until we recursively iterate
|
||||
*/
|
||||
#ifdef G_THREADS_ENABLED
|
||||
if (loop->context->thread != g_thread_self ())
|
||||
if (!g_main_context_acquire (loop->context))
|
||||
{
|
||||
LOCK_LOOP (loop);
|
||||
|
||||
loop->ref_count++;
|
||||
gboolean got_ownership = FALSE;
|
||||
|
||||
/* Another thread owns this context */
|
||||
if (!g_thread_supported ())
|
||||
{
|
||||
g_warning ("g_main_loop_run() was called from second thread but"
|
||||
"g_thread_init() was never called.");
|
||||
}
|
||||
else
|
||||
{
|
||||
if (!loop->sem_cond)
|
||||
loop->sem_cond = g_cond_new ();
|
||||
|
||||
if (!loop->is_running)
|
||||
loop->is_running = TRUE;
|
||||
|
||||
while (loop->is_running)
|
||||
g_cond_wait (loop->sem_cond, loop->mutex);
|
||||
}
|
||||
}
|
||||
else
|
||||
#endif /* G_THREADS_ENABLED */
|
||||
{
|
||||
LOCK_CONTEXT (loop->context);
|
||||
if (loop->context->in_check_or_prepare)
|
||||
{
|
||||
g_warning ("g_main_run(): called recursively from within a source's check() or "
|
||||
"prepare() member, iteration not possible.");
|
||||
UNLOCK_CONTEXT (loop->context);
|
||||
return;
|
||||
}
|
||||
UNLOCK_CONTEXT (loop->context);
|
||||
|
||||
LOCK_LOOP (loop);
|
||||
LOCK_CONTEXT (loop->context);
|
||||
|
||||
loop->ref_count++;
|
||||
loop->is_running = TRUE;
|
||||
while (loop->is_running)
|
||||
{
|
||||
UNLOCK_LOOP (loop);
|
||||
g_main_context_iterate (loop->context, TRUE, TRUE);
|
||||
LOCK_LOOP (loop);
|
||||
}
|
||||
}
|
||||
|
||||
/* We inline this here rather than calling g_main_loop_unref() to
|
||||
* avoid an extra unlock/lock.
|
||||
*/
|
||||
loop->ref_count--;
|
||||
if (loop->ref_count == 0)
|
||||
{
|
||||
UNLOCK_LOOP (loop);
|
||||
main_loop_destroy (loop);
|
||||
if (!loop->is_running)
|
||||
loop->is_running = TRUE;
|
||||
|
||||
if (!loop->context->cond)
|
||||
loop->context->cond = g_cond_new ();
|
||||
|
||||
while (loop->is_running || !got_ownership)
|
||||
got_ownership = g_main_context_wait (loop->context,
|
||||
loop->context->cond,
|
||||
g_static_mutex_get_mutex (&loop->context->mutex));
|
||||
|
||||
if (!loop->is_running)
|
||||
{
|
||||
if (got_ownership)
|
||||
g_main_context_release (loop->context);
|
||||
g_main_loop_unref_and_unlock (loop);
|
||||
return;
|
||||
}
|
||||
|
||||
g_assert (got_ownership);
|
||||
}
|
||||
else
|
||||
UNLOCK_LOOP (loop);
|
||||
LOCK_CONTEXT (loop->context);
|
||||
#endif /* G_THREADS_ENABLED */
|
||||
|
||||
if (loop->context->in_check_or_prepare)
|
||||
{
|
||||
g_warning ("g_main_run(): called recursively from within a source's check() or "
|
||||
"prepare() member, iteration not possible.");
|
||||
return;
|
||||
}
|
||||
|
||||
loop->ref_count++;
|
||||
loop->is_running = TRUE;
|
||||
while (loop->is_running)
|
||||
g_main_context_iterate (loop->context, TRUE, TRUE, self);
|
||||
|
||||
#ifdef G_THREADS_ENABLED
|
||||
g_main_context_release (loop->context);
|
||||
#endif /* G_THREADS_ENABLED */
|
||||
|
||||
g_main_loop_unref_and_unlock (loop);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -2231,20 +2447,14 @@ void
|
||||
g_main_loop_quit (GMainLoop *loop)
|
||||
{
|
||||
g_return_if_fail (loop != NULL);
|
||||
|
||||
LOCK_LOOP (loop);
|
||||
loop->is_running = FALSE;
|
||||
|
||||
#ifdef G_THREADS_ENABLED
|
||||
if (loop->sem_cond)
|
||||
g_cond_broadcast (loop->sem_cond);
|
||||
#endif
|
||||
|
||||
UNLOCK_LOOP (loop);
|
||||
g_return_if_fail (loop->ref_count > 0);
|
||||
|
||||
LOCK_CONTEXT (loop->context);
|
||||
|
||||
g_main_context_wakeup (loop->context);
|
||||
loop->is_running = FALSE;
|
||||
g_main_context_wakeup_unlocked (loop->context);
|
||||
|
||||
if (loop->context->cond)
|
||||
g_cond_broadcast (loop->context->cond);
|
||||
UNLOCK_CONTEXT (loop->context);
|
||||
}
|
||||
|
||||
@ -2259,15 +2469,27 @@ g_main_loop_quit (GMainLoop *loop)
|
||||
gboolean
|
||||
g_main_loop_is_running (GMainLoop *loop)
|
||||
{
|
||||
gboolean result;
|
||||
|
||||
g_return_val_if_fail (loop != NULL, FALSE);
|
||||
g_return_val_if_fail (loop->ref_count > 0, FALSE);
|
||||
|
||||
LOCK_LOOP (loop);
|
||||
result = loop->is_running;
|
||||
UNLOCK_LOOP (loop);
|
||||
return loop->is_running;
|
||||
}
|
||||
|
||||
return result;
|
||||
/**
|
||||
* g_main_loop_get_context:
|
||||
* @loop: a #GMainLoop.
|
||||
*
|
||||
* Returns the #GMainContext of @loop.
|
||||
*
|
||||
* Return value: the #GMainContext of @loop
|
||||
**/
|
||||
GMainContext *
|
||||
g_main_loop_get_context (GMainLoop *loop)
|
||||
{
|
||||
g_return_val_if_fail (loop != NULL, NULL);
|
||||
g_return_val_if_fail (loop->ref_count > 0, NULL);
|
||||
|
||||
return loop->context;
|
||||
}
|
||||
|
||||
/* HOLDS: context's lock */
|
||||
@ -2365,6 +2587,9 @@ g_main_context_add_poll (GMainContext *context,
|
||||
if (!context)
|
||||
context = g_main_context_default ();
|
||||
|
||||
g_return_if_fail (context->ref_count > 0);
|
||||
g_return_if_fail (fd);
|
||||
|
||||
LOCK_CONTEXT (context);
|
||||
g_main_context_add_poll_unlocked (context, priority, fd);
|
||||
UNLOCK_CONTEXT (context);
|
||||
@ -2421,7 +2646,7 @@ g_main_context_add_poll_unlocked (GMainContext *context,
|
||||
context->poll_changed = TRUE;
|
||||
|
||||
/* Now wake up the main loop if it is waiting in the poll() */
|
||||
g_main_context_wakeup (context);
|
||||
g_main_context_wakeup_unlocked (context);
|
||||
#endif
|
||||
}
|
||||
|
||||
@ -2440,10 +2665,11 @@ g_main_context_remove_poll (GMainContext *context,
|
||||
if (!context)
|
||||
context = g_main_context_default ();
|
||||
|
||||
LOCK_CONTEXT (context);
|
||||
g_return_if_fail (context->ref_count > 0);
|
||||
g_return_if_fail (fd);
|
||||
|
||||
LOCK_CONTEXT (context);
|
||||
g_main_context_remove_poll_unlocked (context, fd);
|
||||
|
||||
UNLOCK_CONTEXT (context);
|
||||
}
|
||||
|
||||
@ -2483,7 +2709,7 @@ g_main_context_remove_poll_unlocked (GMainContext *context,
|
||||
context->poll_changed = TRUE;
|
||||
|
||||
/* Now wake up the main loop if it is waiting in the poll() */
|
||||
g_main_context_wakeup (context);
|
||||
g_main_context_wakeup_unlocked (context);
|
||||
#endif
|
||||
}
|
||||
|
||||
@ -2540,6 +2766,8 @@ g_main_context_set_poll_func (GMainContext *context,
|
||||
if (!context)
|
||||
context = g_main_context_default ();
|
||||
|
||||
g_return_if_fail (context->ref_count > 0);
|
||||
|
||||
LOCK_CONTEXT (context);
|
||||
|
||||
if (func)
|
||||
@ -2572,6 +2800,8 @@ g_main_context_get_poll_func (GMainContext *context)
|
||||
if (!context)
|
||||
context = g_main_context_default ();
|
||||
|
||||
g_return_val_if_fail (context->ref_count > 0, NULL);
|
||||
|
||||
LOCK_CONTEXT (context);
|
||||
result = context->poll_func;
|
||||
UNLOCK_CONTEXT (context);
|
||||
@ -2582,7 +2812,7 @@ g_main_context_get_poll_func (GMainContext *context)
|
||||
/* HOLDS: context's lock */
|
||||
/* Wake the main loop up from a poll() */
|
||||
static void
|
||||
g_main_context_wakeup (GMainContext *context)
|
||||
g_main_context_wakeup_unlocked (GMainContext *context)
|
||||
{
|
||||
#ifdef G_THREADS_ENABLED
|
||||
if (g_thread_supported() && context->poll_waiting)
|
||||
@ -2597,6 +2827,26 @@ g_main_context_wakeup (GMainContext *context)
|
||||
#endif
|
||||
}
|
||||
|
||||
/**
|
||||
* g_main_context_wakeup:
|
||||
* @context: a #GMainContext
|
||||
*
|
||||
* If @context is currently waiting in a poll(), interrupt
|
||||
* the poll(), and continue the iteration process.
|
||||
**/
|
||||
void
|
||||
g_main_context_wakeup (GMainContext *context)
|
||||
{
|
||||
if (!context)
|
||||
context = g_main_context_default ();
|
||||
|
||||
g_return_if_fail (context->ref_count > 0);
|
||||
|
||||
LOCK_CONTEXT (context);
|
||||
g_main_context_wakeup_unlocked (context);
|
||||
UNLOCK_CONTEXT (context);
|
||||
}
|
||||
|
||||
/* Timeouts */
|
||||
|
||||
static void
|
||||
|
12
glib/gmain.h
12
glib/gmain.h
@ -124,7 +124,9 @@ struct _GPollFD
|
||||
|
||||
/* GMainContext: */
|
||||
|
||||
GMainContext *g_main_context_get (GThread *thread);
|
||||
GMainContext *g_main_context_new (void);
|
||||
void g_main_context_ref (GMainContext *context);
|
||||
void g_main_context_unref (GMainContext *context);
|
||||
GMainContext *g_main_context_default (void);
|
||||
|
||||
gboolean g_main_context_iteration (GMainContext *context,
|
||||
@ -143,6 +145,13 @@ GSource *g_main_context_find_source_by_funcs_user_data (GMainContext *conte
|
||||
|
||||
/* Low level functions for implementing custom main loops.
|
||||
*/
|
||||
void g_main_context_wakeup (GMainContext *context);
|
||||
gboolean g_main_context_acquire (GMainContext *context);
|
||||
void g_main_context_release (GMainContext *context);
|
||||
gboolean g_main_context_wait (GMainContext *context,
|
||||
GCond *cond,
|
||||
GMutex *mutex);
|
||||
|
||||
gboolean g_main_context_prepare (GMainContext *context,
|
||||
gint *priority);
|
||||
gint g_main_context_query (GMainContext *context,
|
||||
@ -177,6 +186,7 @@ void g_main_loop_quit (GMainLoop *loop);
|
||||
GMainLoop *g_main_loop_ref (GMainLoop *loop);
|
||||
void g_main_loop_unref (GMainLoop *loop);
|
||||
gboolean g_main_loop_is_running (GMainLoop *loop);
|
||||
GMainContext *g_main_loop_get_context (GMainLoop *loop);
|
||||
|
||||
/* GSource: */
|
||||
|
||||
|
@ -74,7 +74,6 @@ typedef struct _GRealThread GRealThread;
|
||||
struct _GRealThread
|
||||
{
|
||||
GThread thread;
|
||||
GMainContext *context;
|
||||
gpointer private_data;
|
||||
gpointer retval;
|
||||
GSystemThread system_thread;
|
||||
@ -465,8 +464,6 @@ g_static_private_free (GStaticPrivate *private_key)
|
||||
G_UNLOCK (g_thread);
|
||||
}
|
||||
|
||||
void g_main_context_destroy (GMainContext *context);
|
||||
|
||||
static void
|
||||
g_thread_cleanup (gpointer data)
|
||||
{
|
||||
@ -487,8 +484,6 @@ g_thread_cleanup (gpointer data)
|
||||
}
|
||||
g_array_free (array, TRUE);
|
||||
}
|
||||
if (thread->context)
|
||||
g_main_context_destroy (thread->context);
|
||||
|
||||
/* We only free the thread structure, if it isn't joinable. If
|
||||
it is, the structure is freed in g_thread_join */
|
||||
@ -560,7 +555,6 @@ g_thread_create_full (GThreadFunc func,
|
||||
result->thread.func = func;
|
||||
result->thread.data = data;
|
||||
result->private_data = NULL;
|
||||
result->context = NULL;
|
||||
G_LOCK (g_thread);
|
||||
G_THREAD_UF (thread_create, (g_thread_create_proxy, result,
|
||||
stack_size, joinable, bound, priority,
|
||||
@ -657,7 +651,6 @@ g_thread_self (void)
|
||||
thread->thread.func = NULL;
|
||||
thread->thread.data = NULL;
|
||||
thread->private_data = NULL;
|
||||
thread->context = NULL;
|
||||
|
||||
if (g_thread_supported ())
|
||||
G_THREAD_UF (thread_self, (&thread->system_thread));
|
||||
|
@ -133,7 +133,7 @@ adder_thread (gpointer data)
|
||||
GIOChannel **channels = data;
|
||||
AddrData addr_data;
|
||||
|
||||
context = g_main_context_get (g_thread_self());
|
||||
context = g_main_context_new ();
|
||||
|
||||
g_mutex_lock (context_array_mutex);
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user