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The code make the following assertion: when freeing a event loop object (usually it's done after exiting from the main event loop), no signal events are still queued and are pending. This assertion can be found in event_unmask_signal_data() with "assert(!d->current);" assertion. It appears that this assertion can be wrong at least in a specific case described below. Consider the following example which is inspired from udev: a process defines 3 source events: 2 are created by sd_event_add_signal() and 1 is created by sd_event_add_post(). 1. the process receives the 2 signals consecutively so that signal 'A' source event is queued and pending. Consequently the post source event is also queued and pending. This is done by sd_event_wait(). 2. The callback for signal 'A' is called by sd_event_dispatch(). 3. The next call to sd_event_wait() will queue signal 'B' source event. 4. The callback for the post source event is called and calls sd_event_exit(). 5. the event loop is exited. 6. freeing the event loop object will lead to the assertion failure in event_unmask_signal_data(). This patch simply removes this assertion as it doesn't seem to be a bug if the signal data still reference a signal source at this point. |
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catalog | ||
coccinelle | ||
docs | ||
factory/etc | ||
hwdb | ||
m4 | ||
man | ||
network | ||
po | ||
rules | ||
shell-completion | ||
src | ||
sysctl.d | ||
system-preset | ||
sysusers.d | ||
test | ||
tmpfiles.d | ||
tools | ||
units | ||
xorg | ||
.dir-locals.el | ||
.editorconfig | ||
.gitattributes | ||
.gitignore | ||
.mailmap | ||
.travis.yml | ||
.vimrc | ||
.ycm_extra_conf.py | ||
autogen.sh | ||
CODING_STYLE | ||
configure.ac | ||
DISTRO_PORTING | ||
ENVIRONMENT.md | ||
HACKING | ||
LICENSE.GPL2 | ||
LICENSE.LGPL2.1 | ||
Makefile-man.am | ||
Makefile.am | ||
mkosi.build | ||
mkosi.default | ||
NEWS | ||
README | ||
README.md | ||
TODO |
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