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author | Eric Wong <e@80x24.org> | 2017-03-22 07:19:56 +0000 |
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committer | Eric Wong <e@80x24.org> | 2017-03-22 07:19:56 +0000 |
commit | 00492c434ea26696ab3c9be5a2b5020fb02f7d32 (patch) | |
tree | 02510420be739dc43b47ecb42582ba88695d08d4 /lib/sleepy_penguin/epoll.rb | |
parent | 0a2e904c8fe06af5be3297d7096fe7ef97a1482a (diff) | |
download | sleepy_penguin-00492c434ea26696ab3c9be5a2b5020fb02f7d32.tar.gz |
Most notably, kevent and epoll_wait wrappers are now nestable, so you can write your own event loops inside somebody elses event loop (not that it's a good idea, but hey, that's reality, sometimes). https://bogomips.org/sleepy_penguin/SleepyPenguin/Kqueue.html#method-i-kevent https://bogomips.org/sleepy_penguin/SleepyPenguin/Epoll.html#method-i-wait For Linux users, there is now copy_file_range(2) support for copying regular files: https://bogomips.org/sleepy_penguin/SleepyPenguin.html#method-c-copy_file_range There is also a new sendfile wrapper which emulates Linux sendfile behavior regardless of platform. It will use the native sendfile(2) syscall on FreeBSD and Linux, at least. https://bogomips.org/sleepy_penguin/SleepyPenguin.html#method-c-linux_sendfile Wrappers for the splice(2) and tee(2) syscalls also exist for Linux users (vmsplice(2) is omitted): https://bogomips.org/sleepy_penguin/SleepyPenguin.html#method-c-splice https://bogomips.org/sleepy_penguin/SleepyPenguin.html#method-c-tee Along with some related constants: https://bogomips.org/sleepy_penguin/SleepyPenguin.html#F_GETPIPE_SZ https://bogomips.org/sleepy_penguin/SleepyPenguin.html#F_SETPIPE_SZ https://bogomips.org/sleepy_penguin/SleepyPenguin.html#F_MORE https://bogomips.org/sleepy_penguin/SleepyPenguin.html#F_MOVE https://bogomips.org/sleepy_penguin/SleepyPenguin.html#F_NONBLOCK In other words, this release merges the useful parts of the old "io_splice" RubyGem: https://bogomips.org/ruby_io_splice/ Linux 4.5+ epoll users also get EPOLLEXCLUSIVE along existing constants: https://bogomips.org/sleepy_penguin/SleepyPenguin/Epoll.html#EXCLUSIVE Ruby 1.8 and 1.9 support are both gone, Ruby 2.0.0+ is required for keyword args, now(*). 31 changes since 3.4.1: README: fix wording: are => is TODO: add memfd item epoll: allow :CLOEXEC instead of the long constant note the epoll/io.rb file is only for Ruby 1.8 support the splice(2) and tee(2) syscalls implement copy_file_range support for Linux 4.5+ doc: various URL updates (https) unify rb_gc() handling for out-of-FD conditions splice: clarification regarding tee() flags pkg.mk: various updates from other projects copy_file_range: use correct syscall numbers on x86/x86-64 new API for splice and tee doc: remove references to IO#pipe_size accessor remove PIPE_BUF constant definition copy_file_range: move wrapper to Ruby for keyword arg handling gemspec: use SPDX-compatible license specifier implement linux_sendfile support portability fixes for systems w/o splice, copy_file_range tests: switch to test-unit free buffer if pthread_setspecific fails allow nestable TLS buffers within the same thread drop unused Ruby 1.8 support code epoll: add newline to Kernel#warn messages for atomicity favor require_relative over require epoll: add EPOLLEXCLUSIVE constant and documentation kqueue: remove IO#autoclose= and 1.8-related checks sp_copy: remove dummy 1.8 code for non-native threaded Ruby build: remove build-time olddoc dependency copy_file_range: add documentation doc: tests and examples for changing pipe size in Linux doc: avoid incorrect links to Epoll::IO
Diffstat (limited to 'lib/sleepy_penguin/epoll.rb')
-rw-r--r-- | lib/sleepy_penguin/epoll.rb | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/sleepy_penguin/epoll.rb b/lib/sleepy_penguin/epoll.rb index 4d23968..7d173c8 100644 --- a/lib/sleepy_penguin/epoll.rb +++ b/lib/sleepy_penguin/epoll.rb @@ -52,6 +52,9 @@ class SleepyPenguin::Epoll # single-threaded applications. +maxevents+ defaults to 64 events. # +timeout+ is specified in milliseconds, +nil+ # (the default) meaning it will block and wait indefinitely. + # + # As of sleepy_penguin 3.5.0+, it is possible to nest + # #wait calls within the same thread. def wait(maxevents = 64, timeout = nil) # snapshot the marks so we do can sit this thread on epoll_wait while other # threads may call epoll_ctl. People say RCU is a poor man's GC, but our |