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- add tevent_cached_getpid()
Note the changes to ABI/tevent-0.12.1.sigs only
revert the temporary changes made there...
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This avoids a getpid() syscall per tevent_loop_once() iteration.
We provide tevent_cached_getpid() also as helper for external consumers
in order to have the logic only once.
Note the change to ABI/tevent-0.12.1.sigs will be reverted
with the bump to 0.13.0.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
* Other minor build fixes.
* Add custom tag to events
* Add event trace api
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Pavel Březina <pbrezina@redhat.com>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Adds new tracing API to trace fd, timer, signal and immediate events
on specific trace points: attach, before handler and dettach.
This can be used in combination with the event tag to keep track
of the currently executed event for purpose of debugging.
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Pavel Březina <pbrezina@redhat.com>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Adds a new API to set and get an uint64_t tag on fd, timer, signal and
immediate events. This can be used to assign a unique and known id to
the event to allow easy tracking of such event.
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Pavel Březina <pbrezina@redhat.com>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
* Upgrade waf to version 2.0.18 to fix a cross-compilation issue
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13846
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Uri Simchoni <uri@samba.org>
Autobuild-Date(master): Mon Nov 18 11:44:08 UTC 2019 on sn-devel-184
* Update waf to version 2.0.17 in order to
fix the build with python 3.8.
* Other minor build fixes.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Wed Sep 4 11:47:04 UTC 2019 on sn-devel-184
* Remove Python 2.x support except to build just the bare C library
* Remove --extra-python (a build time mode to produce Python2 and Python3
bindings at the same time)
* New minor version to allow Samba 4.10 to release a tevent if
required from that branch
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
* Deprecate tevent wrapper api again
* Build fixes
* The build uses python3 by default:
* --extra-python would take python2 now
* To build with python2 only use:
PYTHON=python2 ./configure
PYTHON=python2 make
PYTHON=python2 make install
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Karolin Seeger <kseeger@samba.org>
This allows detailed reporting where a tevent_req spends its time
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This allows to specify wrapper tevent_contexts, which adds the ability
to run functions before and after the event handler functions.
This can be used to implement impersonation hooks
or advanced debugging/profiling hooks.
We'll undo the 0.9.36 ABI change on the 0.9.37 release
at the end of this patchset.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
We'll undo the 0.9.36 ABI change on the 0.9.37 release
at the end of this patchset.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
We'll undo the 0.9.36 ABI change on the 0.9.37 release
at the end of this patchset.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
As side effect this avoids tricks with an extra
tevent_common_timed_deny_destructor().
We'll undo the 0.9.36 ABI change on the 0.9.37 release
at the end of this patchset.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
As side effect this avoids tricks with tevent_se_exists_destructor() to
figure out if the event handler removed itself.
We'll undo the 0.9.36 ABI change on the 0.9.37 release
at the end of this patchset.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This will be used to generically support TALLOC_FREE() on
event which are currently running.
It aborts on every explicit talloc_free(), but ignores implicit
cleanup when the talloc parent is about to go.
We'll undo the 0.9.36 ABI change on the 0.9.37 release
at the end of this patchset.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
We'll undo the 0.9.36 ABI change on the 0.9.37 release
at the end of this patchset.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
* Minor cleanup. wakeup_fd can always be gotten from the event context.
* Use smb_set_close_on_exec() in example code.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
* Remove unused select backend
* Fix a race condition in tevent_threaded_schedule_immediate()
(bug #13130)
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Mon Nov 13 18:02:46 CET 2017 on sn-devel-144
* make tevent_req_print() more robust against crashes
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
* Fix mutex locking in tevent_threaded_context_destructor().
* Fix a memleak on FreeBSD.
* Re-init threading in tevent_re_initialise().
* Include the finish location in tevent_req_default_print().
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Thu Jun 22 17:17:33 CEST 2017 on sn-devel-144
* tevent_update_timer() and tevent_req_reset_endtime() have been added
* documentation updates
* it is now safe to talloc_free() a tevent_threaded_context,
all running threads keep running until they're finished,
but we no longer abort().
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Wed Oct 5 15:32:35 CEST 2016 on sn-devel-144
We might decide at some point that we don't want a request to
time out
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This prepares tevent run-down with active threads.
It has the advantage to not depend on talloc'ed structs. It is needed to make
talloc_free(tevent_context) safe when tevent_threaded_contexts are still
around.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This will be a quicker way to time out sending sockets in messaging_dgm. Right
now cleanup of out-sockets is a bit coarse. The ideal would be to kill a socket
after being idle n seconds. This would mean to free and re-install a timer on
every packet. tevent_update_timer will be quite a bit cheaper.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
* add tevent_threaded_context_create() and tevent_threaded_schedule_immediate()
They add a way to pass the thread result from a helper thread into
the main event loop.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This is infrastructure to improve our async r/w result handling and latency.
The pthreadpool signalling goes through a pipe. This has downsides: The main
event loop has to go through a read on the pipe before it can ship the result.
Also, it is not guaranteed by poll/epoll that the pthreadpool signal pipe is
handled with top priority. When an async pread/pwrite has finished, we should
immediately ship the result to the client, not waiting for anything else.
This patch enables tevent_immediate structs as job signalling. This means a
busy main tevent loop will handle the threaded job completion before any timed
or file descriptor events. Opposite to Jeremy's tevent_thread_proxy this is
done by a modification of the main event loop by looking at a linked list under
a central mutex.
Regarding performance: In a later commit I've created a test that does nothing
but fire one immediate over and over again. If you add a phread_mutex_lock and
unlock pair in the immediate handler, you lose roughly 25% of rounds per
second, so it is measurable. It is questionable that will be measurable in the
real world, but to counter concerns activation of immediates needs to go
through a new struct tevent_threaded_context. Only if such a
tevent_threaded_context exists for a tevent context, the main loop takes the
hit to look at the mutex'ed list of finished jobs.
This patch by design does not care about talloc hierarchies. The idea is that
the main thread owning the tevent context creates a chunk of memory and
prepares the tevent_immediate indication job completion. The main thread hands
the memory chunk together with the immediate as a job description over to a
helper thread. The helper thread does its job and upon completion calls
tevent_threaded_schedule_immediate with the already-prepared immediate. From
that point on memory ownership is again transferred to the main thread.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Signalling the main event loop will also happen from threads soon, and
that will use the same mechanism. This also keeps the pipe open after the last
signal handler is removed. Threaded jobs will come and go very frequently, and
always setting up and tearing down the pipe for each job will be expensive.
Also, this is "just" two file descriptors, and with eventfd just one.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
* Fix memory leak when old signal action restored (bug #11742)
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Fri Feb 19 19:12:25 CET 2016 on sn-devel-144
* Fix bug in poll backend - poll_event_loop_poll()
exits the for loop on POLLNVAL instead of
continuing to find an event that is ready.
* Fix ETIME handling for Solaris event ports (bug #11728).
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Tue Feb 16 00:00:51 CET 2016 on sn-devel-144
* Fix compile error in Solaris ports backend.
* Fix access after free in tevent_common_check_signal(). bug #11308
* Improve pytevent bindings.
* Testsuite fixes.
* Improve the documentation of the tevent_add_fd()
assumtions. It must be talloc_free'ed before closing the fd!
See bug #11141 and bug #11316.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
* Ignore unsolicited signal wakeup in tevent_port event loop.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Wed Mar 4 08:33:06 CET 2015 on sn-devel-104
* Add Solaris ports as tevent backend.
* Improvements to the tevent_data tutorial.
* Remove use of the 'staticforward' macro.
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Fri Feb 27 03:48:57 CET 2015 on sn-devel-104
* pkgconfig fixes
* Bug #10640 - smbd is not responding - tevent_common_signal_handler()
increments non-atomic variables.
https://bugzilla.samba.org/show_bug.cgi?id=10640
* Minor compile fixes
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
This fixes a the following bugs:
- fix a crash bug in tevent_queue_immediate_trigger()
- add missing tevent_num_signals() and
tevent_sa_info_queue_count() prototypes
including documentation.
This adds the following new features:
- tevent_req_set_cleanup_fn()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
This adds the following new features:
- tevent_queue_wait_send/recv()
- tevent_num_signals()
- tevent_sa_info_queue_count()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Thu Dec 12 00:39:35 CET 2013 on sn-devel-104
* Fix tevent testsuite issue on Solaris.
* Add tevent tuturial and documentation updates
* Fix Coverity ID 989236 Operands don't affect result
* Bug: https://bugzilla.samba.org/show_bug.cgi?id=10012
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Thu Aug 1 17:05:02 CEST 2013 on sn-devel-104
This release contains a lot of fixes:
- Adding new timer events is now faster, if there's
a large number of timer events.
- sigprocmask does not work on FreeBSD to stop further signals in a signal
handler.
- TEVENT_NUM_SIGNALS is calculated by configure in order
to support realtime signals on freebsd.
- ./configure --disable-python was fixed for the standalone build.
- Several crash bugs in the poll backend are fixed.
- The poll backend removes deleted events from the
cached pollfd array now.
- The poll doesn't pass pollfd.events == 0 to poll()
and maintains a list of disabled events,
instead of consuming 100% cpu and/or triggering
the callers handler.
- The poll backend detects POLLNVAL and reports EBADF
instead of consuming 100% cpu.
- The select backend supports separate handlers
for TEVENT_FD_READ and TEVENT_FD_WRITE.
- The poll and select backends are now doing fair
queuing of fd events.
- The epoll has better error checking
and supports separate handlers
for TEVENT_FD_READ and TEVENT_FD_WRITE.
- The standard backend was rewritten to be a tiny
wrapper on top of epoll with a fallback to poll,
which means that it doesn't use select directly anymore.
- TEVENT_TRACE_BEFORE_LOOP_ONCE and TEVENT_TRACE_AFTER_LOOP_ONCE
are added in order to allow the application to hook in
before and after the loop_once() backend function is called.
The TEVENT_HAS_LOOP_ONCE_TRACE_POINTS define can be used to
detect the new feature.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sat Mar 2 02:15:44 CET 2013 on sn-devel-104
This adds tevent_*_trace_*() and tevent_context_init_ops()
metze
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Fri Jun 8 20:47:41 CEST 2012 on sn-devel-104
