Azat Khuzhin [Sun, 1 Mar 2020 13:01:12 +0000 (16:01 +0300)]
Add EVENT_BASE_FLAG_EPOLL_DISALLOW_TIMERFD flag (fixes: #958)
By default we are using CLOCK_MONOTONIC_COARSE, but if
EVENT_BASE_FLAG_PRECISE_TIMER isset, then CLOCK_MONOTONIC will be used,
however this will also enable timerfd, while this is not always what
someone wants, hence add a flag to control this (by default the old
behavior is preserved, set new flag to change it).
ayuseleznev [Thu, 27 Feb 2020 13:59:45 +0000 (16:59 +0300)]
evdns: fix a crash when evdns_base with waiting requests is freed
Fix undefined behaviour and application crash that might take
place in some rare cases after calling evdns_base_free when
there are requests in the waiting queue.
Current cleanup procedure in evdns_base_free_and_unlock
function includes 2 steps:
1. Finish all inflight requests.
2. Finish all waiting requests.
During the first step we iterate over each list in req_heads
structure and finish all requests in these lists. With current
logic finishing an inflight request (function request_finished)
removes it from the inflight requests container and forces
a wating connection to be sent (by calling
evdns_requests_pump_waiting_queue). When these new requests are
sent it is possible that they will be inserted to the list in
req_heads that we've already cleaned.
So in some cases container of the inflight requests is not empty
after this procedure and some requests are not finished and
deleted. When timeouts for these requests expire
evdns_request_timeout_callback is called but corresponding
evdns_base has been already deleted which causes undefined
behaviour and possible applicaton crash.
It is interesting to note that in old versions of libevent such
situation was not possible. This bug was introduced by the commit 14f84bbdc77d90b1d936076661443cdbf516c593. Before this commit
nameservers were deleted before finishing the requests. Therefore
it was not possible that requests from the waiting queue be sent
while we finish the inflight requests.
Azat Khuzhin [Sun, 26 Jan 2020 22:56:58 +0000 (01:56 +0300)]
Merge branch 'github-actions-v2' (#951)
* github-actions-v2:
travis: disable doxygen and coveralls, in favor of github actions
github actions: test and coverage
github actions: doxygen
Ignore truthy in yamllint (for github-actions)
test: mark common_timeout as retriable
cmake: set rpath for libraries on linux
test-export: compatible with all versions of visual studio
coverage: 'lcov --remove' need full path
Azat Khuzhin [Mon, 13 Jan 2020 20:36:40 +0000 (23:36 +0300)]
Merge branch 'osx-clock'
Moves the thread into real-time scheduling class, as recommended in [1], it
fixes the separate test provided by @ygj6 [2] everywhere (github actions,
travis-ci, appveyor) under osx.
Although even after this changes the following time-related tests failed
on travis-ci:
- no_events
- del_wait
But anyway I guess #940 can be closed, since this fixes the issue in common.
* osx-clock:
test: Use THREAD_* wrappers in del_notify/del_wait
test: move threads created with THREAD_START() to realtime scheduling class too
test: put thread into real time scheduling class on osx for better latencies
Azat Khuzhin [Mon, 13 Jan 2020 19:27:32 +0000 (22:27 +0300)]
Merge branch 'ci-improvements'
* ci-improvements:
travis-ci: measure build/tests time
travis-ci: drop travis_wait (does not work with sub processes)
cmake: do not print used method (EVENT_SHOW_METHOD) while running tests
cmake: run regress test quietly like autotools (makes CI logs cleaner)
nntrab [Tue, 9 Feb 2016 18:01:00 +0000 (18:01 +0000)]
Add callback support for error pages
The existing error pages are very basic and don't allow for
multi-lingual support or for conformity with other pages in a web site.
The aim of the callback functionality is to allow custom error pages to
be supported for calls to evhttp_send_error() by both calling
applications and Libevent itself.
A backward-incompatible change has been made to the title of error pages
sent by evhttp_send_error(). The original version of the function used
the reason argument as part of the title. That might have unforeseen
side-effects if it contains HTML tags. Therefore the title has been
changed to always use the standard status text.
An example of the error callback can be found in this
[version](https://github.com/libevent/libevent/files/123607/http-server.zip)
of the 'http-server' sample. It will output error pages with very bright
backgrounds, the error code using a very large font size and the reason.
* http-connect:
http-connect: do not check connection on GET cb
http-connect: set Host header (for CONNECT and GET) (like curl)
http-connect: cleanup and helpers
http: do not close connection for CONNECT
http: do not assume body for CONNECT
Azat Khuzhin [Sun, 5 Jan 2020 16:02:22 +0000 (19:02 +0300)]
Fix compilation without OPENSSL_API_COMPAT
Use the following for openssl 1.1+:
- X509_getm_notBefore over X509_get_notBefore
- X509_getm_notAfter over X509_get_notAfter
- use OPENSSL_VERSION_NUMBER over SSLeay()
- add missing headers
Azat Khuzhin [Tue, 10 Dec 2019 06:25:39 +0000 (09:25 +0300)]
appveyor: switch to Previous Visual Studio 2019 (VS issues after update)
After update [1] of the Visual Studio 2019 image cmake unable to find
path to the c compiler [2]:
cmake : CMake Error at CMakeLists.txt:47 (project):
At line:1 char:1
+ cmake -G 'Visual Studio 16 2019' -A x64 ..
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (CMake Error at ...t:47 (project)::String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
The CMAKE_C_COMPILER:
C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.23.28105/bin/Hostx64/x64/cl.exe
is not a full path to an existing compiler tool.
Add support for posix mutex priority inheritance. This is important to
avoid priority inversion in systems running with threads with different
priorities.
Signed-off-by: Andre Azevedo <andre.azevedo@gmail.com>
yuangongji [Tue, 22 Oct 2019 14:29:12 +0000 (22:29 +0800)]
appveyor: fix openssl version mismatch warning
yuangongji:
"Many warnings appear when building and running with Visual Studio 2019 in Appveyor:
WARN C:\projects\libevent\test\regress_ssl.c:210: Version mismatch for openssl: compiled with 1000214f but running with 1000212f
Simply add the openssl binary to the "PATH" environment variable to fix it.
I wrote a simple demo to reproduce it: https://github.com/ygj6/verify
I see there are dozens of openssl libraries in the system of appveyor: https://ci.appveyor.com/project/ygj6/verify/builds/28290688
If you do not specify which openssl to use, the system cannot find the correct library."
Azat Khuzhin [Mon, 21 Oct 2019 19:21:19 +0000 (22:21 +0300)]
Merge pull request #915 from ygj6 -- evutil_socketpair win32 fixes
* upstream/pr/915:
appveyor: add vs2019 os to test some new features brought by Win10
test: add testcase for evutil_socketpair()
evutil: make evutil_socketpair() have the same behavior on Windows with build number lower and higher than 17063
Azat Khuzhin [Tue, 8 Oct 2019 21:13:01 +0000 (00:13 +0300)]
appveyor: do not allow any failures
Yes we still have flacky tests, but anyway two main configuration can
fail too (and they do fail from time to time) so let's not allow any
failures and see how this will go.
The CMAKE_C_FLAGS_DEBUG, CMAKE_C_FLAGS_RELEASE, CMAKE_C_FLAGS_MINSIZEREL
and CMAKE_C_FLAGS_RELWITHDEBINFO options are correctly and deliberately
toggled to use the libcmt (/MT) flag options in place of the usual
msvcrt (/MD) options, but this isn't necessarily desired by the user.
The default choice can be overriden with the EVENT__MSVC_STATIC_RUNTIME
cmake option.
However, the /MD flag that is the choice of CMake only enters into
play for the four types of builds above. If the user introduces another
CMAKE_BUILD_TYPE, the base CMAKE_C_FLAGS must not be manipulated, as
that value (and the CMAKE_C_FLAGS_{custom} value) have been explicitly
chosen by the user/developer deploying this library, and the mismatch
between these flags in different dependencies results in link errors.
The CMake build schema itself doesn't place an /MD flag in CMAKE_BUILD_TYPE
so any /M compile option in that variable needs to be retained.
Signed-off-by: William Rowe <wrowe@pivotal.io> Signed-off-by: Yechiel Kalmenson <ykalmenson@pivotal.io>
Azat Khuzhin [Thu, 29 Aug 2019 19:57:44 +0000 (22:57 +0300)]
Revert "Warn if forked from the event loop during event_reinit()"
Thinking about this more and realizing that this was a mistake, so
should be reverted.
In a nut shell I guess most of the apps calls event_reinit() from the
loop (see [1] for example), and this should be totally fine (the bit
with the signals [2] handled in event_reinit() gracefully)