* Initial Windows asyncproc part.
Deprecate usage of net/nativesockets in handles, asyncloop.
Introduce primitives with inheritable flag.
* Some posix fixes.
* More duplicate fixes.
* Fix AsyncProcessOption.EchoCommand option.
Remove isMainModule code.
Fix execCommand to use AsyncProcessOption.EvalCommand.
* Initial asyncproc tests commit.
* Some Posix fixes.
* Fix Posix crash.
* Add testsuite.
Fix osnet.nim to use proper declarations.
Fix timer.nim to use proper declarations.
Add Windows environment handling procedures.
Fix createAsyncPipe.
Add leaks tracking for AsyncProcessRef.
* Fix O_CLOEXEC constant value.
* Add file descriptors leak test.
* Remove commented code.
Refactor exceptions.
Fix compilation warnings.
* No exception ioselectors_kqueue initial commit.
* Some BSD fixes.
Linux refactoring of selectors.nim.
* Some fixes to move further.
* Last Linux fixes.
* Fixes for asyncloop to use 2nd version of selectors api.
* Add osutils.nim.
* Some fixes.
* Hardening resumeRead(), resumeWrite() and consumers.
Add ESRCH handling.
Introduce no-exception fromPipe2.
* Make Windows part exception-free and fix zombie race issue.
* createStreamServer() fixes.
* Upgrade asyncproc to use non-exception primitives.
Fix ioselectors_kqueue to use closeFd().
* Refactor accept() and acceptLoop() to be exception free.
* Deprecated some `result` usage.
Last fixes to make stream.nim exception free.
Use closeFd().
Refactor some loops to use handleEintr().
* Fix connect() forgot to unregister socket on error.
* All createAsyncSocket() sockets should be closed with unregisterAndCloseFd().
* Attempt to fix posix bug with incomplete output.
* Change number of runs in big test.
* Refactoring pipes creation. Attempt to fix "write error: Resource temporarily unavailable".
* Fix waitForExit(duration) code.
Fix test exit code.
* Fix Windows missing SIGTERM.
* Fix mistype.
* Fix compilation error.
* Attempt to fix Nim 1.6 issue.
* Eliminate Nim's WideCString usage to avoid any problems in future.
* Deprecate posix usage in osnet.
* Eliminate unused imports.
* Some debugging statements for investigation.
* Remove all the debugging statements.
* Remove testhelpers in favor of unittest2/asynctests.
* Fix flaky test.
* Make test more resilient to timings.
* Add memory size dump to CI.
* Refactor some blocks to use valueOr.
Make waitForExit to use kill() instead of terminate().
* Remove memory dumps.
* Fix peekProcessExitCode() blocks issue.
* Fix Windows issue.
* Add some debugging echoes.
* Fix compilation error.
* Add some debugging echoes.
* Add more helpers.
* Fix compilation error.
* waitForExit() is primary suspect.
* Remove fast-path for waitForExit.
Remove loop for reading signal events.
* Remove all debugging echoes.
* Return one debugging echo.
* Fix futures tests.
* Add test for multiple processes waiting to attempt stress test.
* Refactor ioselectors_epoll for better signalfd and process monitoring.
Add more race condition fixes to waitForExit.
Fix some Nim 1.6 warnings.
* Fix after rebase issues and warnings.
* Fix style issues.
Fix different Nim versions issues.
Workaround `signalfd` style issues.
* Add one more Linux signals workaround.
Add one more multiple processes test.
* Windows fixes.
* Remove unixPlatform define.
Fix WSAECONNABORTED for devel.
* Temporarily disable rate limit tests.
Fix more devel issues.
* Deprecate `hasThreadSupport` for ioselectors_kqueue.
Fix verifySelectParams issue.
Add exit codes test for multiple processes.
Fix osnet PtrToCstringConv warning.
* ioselectors_kqueue refactoring.
* Initial commit.
* Fix 1.2-1.4 compilation issue.
* Fix unused warning for testCtrlC() test.
* Post-rebase fixes.
* Restore master files.
* More fixes.
* Remove duplicates.
* Fix style mistake.
* Add more flexible pragmas.
* Initial commit.
* Some Linux fixes.
* Address review comments on Windows.
* Fix issues on Linux.
* Fix 1.2 issue and Windows warnings.
* Fix posix compilation issues.
This PR moves all compile-time configuration to a single module,
simplifying documentation and access to these features.
Upcomfing features may be enabled either individually, or through a new
`chronosPreviewV4` catch-all designed to allow code to be prepared for
increased strictness in future chronos releases.
`-d:chronosDebug` may be used to enable the existing debugging helpers
together.
The socket selector holds a `seq` of per-descriptor data. When a reader
is registered, a pointer to a seq item is stored - when the `seq` grows,
this pointer becomes dangling and causes crashes like
https://github.com/status-im/nimbus-eth2/issues/3521.
It turns out that there already exist two mechanisms for passing user
data around - this PR simply removes one of them, saving on memory usage
and removing the need to store pointers to the `seq` data that become
dangling on resize.
* exception tracking
This PR adds minimal exception tracking to chronos, moving the goalpost
one step further.
In particular, it becomes invalid to raise exceptions from `callSoon`
callbacks: this is critical for writing correct error handling because
there's no reasonable way that a user of chronos can possibly _reason_
about exceptions coming out of there: the event loop will be in an
indeterminite state when the loop is executing an _random_ callback.
As expected, there are several issues in the error handling of chronos:
in particular, it will end up in an inconsistent internal state whenever
the selector loop operations fail, because the internal state update
functions are not written in an exception-safe way. This PR turns this
into a Defect, which probably is not the optimal way of handling things
- expect more work to be done here.
Some API have no way of reporting back errors to callers - for example,
when something fails in the accept loop, there's not much it can do, and
no way to report it back to the user of the API - this has been fixed
with the new accept flow - the old one should be deprecated.
Finally, there is information loss in the API: in composite operations
like `poll` and `waitFor` there's no way to differentiate internal
errors from user-level errors originating from callbacks.
* store `CatchableError` in future
* annotate proc's with correct raises information
* `selectors2` to avoid non-CatchableError IOSelectorsException
* `$` should never raise
* remove unnecessary gcsafe annotations
* fix exceptions leaking out of timer waits
* fix some imports
* functions must signal raising the union of all exceptions across all
platforms to enable cross-platform code
* switch to unittest2
* add `selectors2` which supercedes the std library version and fixes
several exception handling issues in there
* fixes
* docs, platform-independent eh specifiers for some functions
* add feature flag for strict exception mode
also bump version to 3.0.0 - _most_ existing code should be compatible
with this version of exception handling but some things might need
fixing - callbacks, existing raises specifications etc.
* fix AsyncCheck for non-void T
Eugene Kabanov
Jacek Sieka
Eugene Kabanov
Mamy Ratsimbazafy