We need to check priv->cancelled after taking the lock. Previously we
only checked it just before taking the lock, which left a small chance
for a race.
This patch only adds the function. The function is a NOP.
See the API documentation for a rationale.
Part of: Bug 591388 - number of GCancellables available is too limited
... as g_cancellable_cancel()
Rework a g_critical() that would (rarely) trigger when _reset() was
called in a thread different from _cancel() by making _reset() wait for
the cancel function to be finished the same way
g_cancellable_disconnect() uses.
There is no need to have a GIOChannel in the GPollFD in
g_cancellable_create_pollfd. All we need is an Event object that
we signal when cancelling and reset when resetting.
Also, supporting g_cancellable_get_fd on Windows using _pipe is useless
as it doesn't work with any corresponding poll() function, so just don't
support that on win32.
I tested this with the cancellation support in GSocket from gnio.
There are race conditions when connecting and disconnecting from the
"cancelled" signal on GCancellable which you need to do when
implementing cancellable operations. This adds helper functions that
avoid these races and mentions these races in the docs. (#572844)
Bug 509446 - portable blocking gio cancellation
* gcancellable.c (g_cancellable_make_pollfd): New method to make a
GPollFD for a cancellable (which is slightly more complicated on
Windows than Unix).
* gunixinputstream.c (g_unix_input_stream_read):
* gunixoutputstream.c (g_unix_output_stream_write): Use
g_cancellable_make_pollfd() and g_poll() rather than using poll()
directly.
* tests/unix-streams.c: test of GUnixInputStream,
GUnixOutputStream, and GCancellable.
svn path=/trunk/; revision=7553
* gcancellable.c (g_cancellable_class_init): Add a note to the
"cancelled" signal docs warning about thread-safety issues
(g_cancellable_cancel): Note that cancelling an asynchronous
operation takes effect asynchronously, not immediately.
svn path=/trunk/; revision=7541
2008-06-16 Michael Natterer <mitch@imendio.com>
* *.c: chain up unconditionally in finalize() and dispose(). Also
don't dereference these function pointers when calling them since
that has no meaning at all.
svn path=/trunk/; revision=7048
2008-01-18 Murray Cumming <murrayc@murrayc.com>
* gappinfo.c:
* gcancellable.c:
* gfile.c: Fixed some minor typos in the
documentation.
svn path=/trunk/; revision=6331
2007-12-10 15:08:59 Tim Janik <timj@imendio.com>
* let g_warn_if_fail replace g_assert as discussed here:
http://mail.gnome.org/archives/gtk-devel-list/2007-October/msg00089.html
* fix bug #502498: Test framework assertion failures should follow
gcc error format.
* gmessages.h, gmessages.c: deprecated g_assert_warning() which is
unused now. removed g_assert*() definitions whcih are provided by
gtestutils.h now. added g_warn_if_reached() and g_warn_if_fail()
which are recommended as g_assert/g_assert_not_reached replacements
for non-test programs.
added g_warn_message() to implement g_warn_*() macros.
use emacs-next-error friendly formatting for file:line: for warnings.
* gtestutils.h, gtestutils.c: use emacs-next-error friendly formatting.
implement g_assert_not_reached() with g_assertion_message() and
g_assert() in terms of g_assertion_message_expr() so we'll be able to
provide assertion messages in test logs.
* gkeyfile.c, gbookmarkfile.c: changed g_assert*() to g_warn_if_fail()
or g_return_if_fail() where suitable.
* gio/: changed g_assert to g_warn_if_fail.
svn path=/trunk/; revision=6086
2007-12-03 Hans Breuer <hans@breuer.org>
[start of port to win32/msvc]
* gcancellable.c : HAVE_UNIST_H and _pipe()
* gcontenttype.c : only include <dirent.h> in the UNIX branch
* gdatainputstream.c : pointer arithmetic on void* is a gcc extension
* gdummyfile.c glocalfileinputstream.c gsimpleasyncresult.c : use
HAVE_UNIST_H
* glocalfileoutputstream.c : use HAVE_UNIST_H and s/ssize_t/gssize/
* glocalvfs.c : use HAVE_PWD_H
* gio.symbols : ifdef unix specific functions with G_OS_UNIX
* makefile.msc : new file (maybe later converted to makefile.msc.in)
* Makefile.am : added to EXTRA_DIST
svn path=/trunk/; revision=6027
of the public files. Fixes broken function documentation prototypes.
Fixes GCancellable inaccuracies. Removes unnecessary incomplete
gtk-doc headers in private files.
svn path=/trunk/; revision=5953
2007-11-26 Alexander Larsson <alexl@redhat.com>
* Makefile.am:
* configure.in:
* gio-2.0-uninstalled.pc.in:
* gio-2.0.pc.in:
* gio-unix-2.0-uninstalled.pc.in:
* gio-unix-2.0.pc.in:
* gio/
* docs/reference/gio
Merged gio-standalone into glib.
* glib/glibintl.h:
* glib/gutils.c:
Export glib_gettext so that gio can use it
Add P_ (using same domain for now)
Add I_ as g_intern_static_string
svn path=/trunk/; revision=5941
