kc3-lang/libevent/epoll.c

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epoll.c

Branch - branch -mastergithub/HEADgithub/dependabot/github_actions/github-actions-c04319c41egithub/mastergithub/patches-1.4github/patches-2.0github/patches-2.1github/pr/529-reproducerorigin/masterupstream/HEADupstream/dependabot/github_actions/github-actions-c04319c41eupstream/masterupstream/patches-1.4upstream/patches-2.0upstream/patches-2.1upstream/pr/529-reproducer

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Log

Author	Commit	Date	CI	Message
	1af745d0	2022-10-25T11:30:34		signal: new signal handling backend based on signalfd Linux-specific signal handling backend based on signalfd(2) system call, and public function event_base_get_signal_method() to obtain an underlying kernel signal handling mechanism. Signed-off-by: Dmitry Antipov <dantipov@cloudlinux.com>
	117ee9a0	2022-09-15T14:06:50		epoll: use epoll_pwait2() if available On GNU/Linux with epoll backend, prefer epoll_pwait2() if available, which is useful to support the timeout with microsecond precision.
	83ef3216	2020-04-22T19:44:45		Add wepoll support to light up the epoll backend on Windows libevent is lacking a scalable backend on Windows. Let's leverage the wepoll library until Windows comes up with an epoll/kqueue compete user mode API. - All regress tests pass for standard wepoll - These 2 tests fail intermittently for changelist wepoll, so disabling changelist wepoll for now http/cancel_inactive_server http/stream_in - verify target on Windows runs tests for both wepoll and win32 backends - wepoll backend preferred over win32 backend - wepoll version 1.5.6 v2: cleaner backend abstraction. Disallow wepoll on MinGW/Cygwin. v3: Add wepoll.h to dist v4: Make sure wepoll source files are excluded from cygwin/mingw builds v5: Keep win32 as default backend on windows. v6: Include wepoll in mingw builds. Verified that regress tests pass w/ WEPOLL backend. v7: Enable wepoll on mingw when building with cmake v8: Add wepoll testrunner for autotools test target
	972b456b	2020-05-05T00:21:18		Fix EV_CLOSED detection/reporting (epoll only) - EV_CLOSED is EPOLLRDHUP in epoll - EPOLLRDHUP reported w/o EPOLLHUP if the socket closed with shutdown(SHUT_WR) - EPOLLRDHUP reported w/ EPOLLHUP if the socket closed with close() so in this case epoll backend will detect this event as error (EV_READ|EV_WRITE), since the epoll_ctl() will return EPOLLRDHUP with EPOLLHUP set, but this is not correct, let's fix this. Fixes: #984
	e703c034	2020-04-09T02:00:17		epoll: handle EV_ET for EV_CLOSED too
	9a9b92ed	2020-03-01T16:01:12		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).
	b77d3e78	2018-10-30T08:50:08		Epoll ET setting lost with multiple events for same fd After two or more events have been registered for the same file descriptor using EV_ET, if one of the events is deleted, then the epoll_ctl() call issued by libevent drops the EPOLLET flag resulting in level triggered notifications. [ azat: use existing "et" in the evmap_io_del_() ]
	a1b142bd	2015-11-08T14:33:49		epoll: introduce PRINT_CHANGES() macro to avoid copy-pasting And also this will use change_to_string() for successfully returned epoll_ctl()
	3908a5e3	2014-02-24T15:07:38		Do not offer EV_FEATURE_EARLY_CLOSE if we have no EPOLLRDHUP
	ff266332	2014-02-17T12:43:10		BUGFIX: Fix compilation on systems with EPOLLRDHUP undefined. Since epolltable-internal.h uses this define, it must be defined before that is included.
	43ffcf69	2014-01-21T15:47:44		Split epoll lookup table into a separate header file It accounted for more than half the length of epoll.c, and it's machine-generated, so we might as well keep it separate.
	b1b69ac7	2014-01-17T23:20:42		Implemented EV_CLOSED event for epoll backend (EPOLLRDHUP). - Added new EV_CLOSED event - detects premature connection close by clients without the necessity of reading all the pending data. Does not depend on EV_READ and/or EV_WRITE. - Added new EV_FEATURE_EARLY_CLOSED feature for epoll. Must be supported for listening to EV_CLOSED event. - Added new regression test: test-closed.c - All regression tests passed (test/regress and test/test.sh) - strace output of test-closed using EV_CLOSED: socketpair(PF_LOCAL, SOCK_STREAM, 0, [6, 7]) = 0 sendto(6, "test string\0", 12, 0, NULL, 0) = 12 shutdown(6, SHUT_WR) = 0 epoll_ctl(3, EPOLL_CTL_ADD, 7, {EPOLLRDHUP, {u32=7, u64=7}}) = 0 epoll_wait(3, {{EPOLLRDHUP, {u32=7, u64=7}}}, 32, 3000) = 1 epoll_ctl(3, EPOLL_CTL_MOD, 7, {EPOLLRDHUP, {u32=7, u64=7}}) = 0 fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 4), ...}) mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYM... write(1, "closed_cb: detected connection close "..., 45) = 45
	1258614f	2012-11-16T21:38:04		avoid valgrind false positive by zeroing epoll_event
	1aaf9f01	2012-06-18T10:31:38		Avoid giving a spurious warning when timerfd support is unavailable We forgot to do the obligatory "Check if there is no syscall there" dance when calling timerfd_create(). (Commit message by Nick)
	26c75828	2012-04-26T16:22:03		When PRECISE_TIMERS is set with epoll, use timerfd for microsecond precision The epoll interface ordinarily gives us one-millisecond precision, so on Linux it makes perfect sense to use the CLOCK_MONOTONIC_COARSE timer. But when the user has set the new PRECISE_TIMER flag for an event_base (either by the EVENT_BASE_FLAG_PRECISE_TIMER flag, or by the EVENT_PRECISE_TIMER environment variable), they presumably want finer granularity. On not-too-old Linuxes, we can achieve this using the Timerfd mechanism, which accepts nanosecond granularity and understands posix clocks. It's a little more expensive than just calling epoll_wait(), so we won't do it by default.
	71bca50f	2012-04-20T12:27:12		Split out time-related prototypes into time-internal.h
	8ac3c4c2	2012-02-29T15:07:33		Have all visible internal function names end with an underscore. We haven't had a convention for naming internal functions in -internal.h versus naming visible functions in include/**.h. This patch changes every function declared in a -internal.h file to be named ending with an underscore. Static function names are unaffected, since there's no risk of calling them from outside Libevent. This is an automatic conversion. The script that produced was made by running the following script over the output of ctags --c-kinds=pf -o - *-internal.h | cut -f 1 | sort| uniq (GNU ctags was required.) ===== #!/usr/bin/perl -w -n use strict; BEGIN { print "#!/usr/bin/perl -w -i -p\n\n"; } chomp; my $ident = $_; next if ($ident =~ /_$/); next if ($ident =~ /^TAILQ/); my $better = "${ident}_"; print "s/(?<![A-Za-z0-9_])$ident(?![A-Za-z0-9_])/$better/g;\n"; === And then running the script below that it generated over all === the .c and .h files again #!/usr/bin/perl -w -i -p s/(?<![A-Za-z0-9_])bufferevent_async_can_connect(?![A-Za-z0-9_])/bufferevent_async_can_connect_/g; s/(?<![A-Za-z0-9_])bufferevent_async_connect(?![A-Za-z0-9_])/bufferevent_async_connect_/g; s/(?<![A-Za-z0-9_])bufferevent_async_new(?![A-Za-z0-9_])/bufferevent_async_new_/g; s/(?<![A-Za-z0-9_])bufferevent_async_set_connected(?![A-Za-z0-9_])/bufferevent_async_set_connected_/g; s/(?<![A-Za-z0-9_])bufferevent_decref(?![A-Za-z0-9_])/bufferevent_decref_/g; s/(?<![A-Za-z0-9_])bufferevent_disable_hard(?![A-Za-z0-9_])/bufferevent_disable_hard_/g; s/(?<![A-Za-z0-9_])bufferevent_enable_locking(?![A-Za-z0-9_])/bufferevent_enable_locking_/g; s/(?<![A-Za-z0-9_])bufferevent_incref(?![A-Za-z0-9_])/bufferevent_incref_/g; s/(?<![A-Za-z0-9_])bufferevent_init_common(?![A-Za-z0-9_])/bufferevent_init_common_/g; s/(?<![A-Za-z0-9_])bufferevent_remove_from_rate_limit_group_internal(?![A-Za-z0-9_])/bufferevent_remove_from_rate_limit_group_internal_/g; s/(?<![A-Za-z0-9_])bufferevent_suspend_read(?![A-Za-z0-9_])/bufferevent_suspend_read_/g; s/(?<![A-Za-z0-9_])bufferevent_suspend_write(?![A-Za-z0-9_])/bufferevent_suspend_write_/g; s/(?<![A-Za-z0-9_])bufferevent_unsuspend_read(?![A-Za-z0-9_])/bufferevent_unsuspend_read_/g; s/(?<![A-Za-z0-9_])bufferevent_unsuspend_write(?![A-Za-z0-9_])/bufferevent_unsuspend_write_/g; s/(?<![A-Za-z0-9_])evbuffer_commit_read(?![A-Za-z0-9_])/evbuffer_commit_read_/g; s/(?<![A-Za-z0-9_])evbuffer_commit_write(?![A-Za-z0-9_])/evbuffer_commit_write_/g; s/(?<![A-Za-z0-9_])evbuffer_invoke_callbacks(?![A-Za-z0-9_])/evbuffer_invoke_callbacks_/g; s/(?<![A-Za-z0-9_])evbuffer_launch_read(?![A-Za-z0-9_])/evbuffer_launch_read_/g; s/(?<![A-Za-z0-9_])evbuffer_launch_write(?![A-Za-z0-9_])/evbuffer_launch_write_/g; s/(?<![A-Za-z0-9_])evbuffer_overlapped_new(?![A-Za-z0-9_])/evbuffer_overlapped_new_/g; s/(?<![A-Za-z0-9_])evbuffer_set_parent(?![A-Za-z0-9_])/evbuffer_set_parent_/g; s/(?<![A-Za-z0-9_])event_active_nolock(?![A-Za-z0-9_])/event_active_nolock_/g; s/(?<![A-Za-z0-9_])event_base_add_virtual(?![A-Za-z0-9_])/event_base_add_virtual_/g; s/(?<![A-Za-z0-9_])event_base_assert_ok(?![A-Za-z0-9_])/event_base_assert_ok_/g; s/(?<![A-Za-z0-9_])event_base_del_virtual(?![A-Za-z0-9_])/event_base_del_virtual_/g; s/(?<![A-Za-z0-9_])event_base_get_deferred_cb_queue(?![A-Za-z0-9_])/event_base_get_deferred_cb_queue_/g; s/(?<![A-Za-z0-9_])event_base_get_iocp(?![A-Za-z0-9_])/event_base_get_iocp_/g; s/(?<![A-Za-z0-9_])event_base_start_iocp(?![A-Za-z0-9_])/event_base_start_iocp_/g; s/(?<![A-Za-z0-9_])event_base_stop_iocp(?![A-Za-z0-9_])/event_base_stop_iocp_/g; s/(?<![A-Za-z0-9_])event_changelist_add(?![A-Za-z0-9_])/event_changelist_add_/g; s/(?<![A-Za-z0-9_])event_changelist_del(?![A-Za-z0-9_])/event_changelist_del_/g; s/(?<![A-Za-z0-9_])event_changelist_freemem(?![A-Za-z0-9_])/event_changelist_freemem_/g; s/(?<![A-Za-z0-9_])event_changelist_init(?![A-Za-z0-9_])/event_changelist_init_/g; s/(?<![A-Za-z0-9_])event_changelist_remove_all(?![A-Za-z0-9_])/event_changelist_remove_all_/g; s/(?<![A-Za-z0-9_])event_deferred_cb_cancel(?![A-Za-z0-9_])/event_deferred_cb_cancel_/g; s/(?<![A-Za-z0-9_])event_deferred_cb_init(?![A-Za-z0-9_])/event_deferred_cb_init_/g; s/(?<![A-Za-z0-9_])event_deferred_cb_queue_init(?![A-Za-z0-9_])/event_deferred_cb_queue_init_/g; s/(?<![A-Za-z0-9_])event_deferred_cb_schedule(?![A-Za-z0-9_])/event_deferred_cb_schedule_/g; s/(?<![A-Za-z0-9_])event_get_win32_extension_fns(?![A-Za-z0-9_])/event_get_win32_extension_fns_/g; s/(?<![A-Za-z0-9_])event_iocp_activate_overlapped(?![A-Za-z0-9_])/event_iocp_activate_overlapped_/g; s/(?<![A-Za-z0-9_])event_iocp_port_associate(?![A-Za-z0-9_])/event_iocp_port_associate_/g; s/(?<![A-Za-z0-9_])event_iocp_port_launch(?![A-Za-z0-9_])/event_iocp_port_launch_/g; s/(?<![A-Za-z0-9_])event_iocp_shutdown(?![A-Za-z0-9_])/event_iocp_shutdown_/g; s/(?<![A-Za-z0-9_])event_overlapped_init(?![A-Za-z0-9_])/event_overlapped_init_/g; s/(?<![A-Za-z0-9_])evhttp_connection_connect(?![A-Za-z0-9_])/evhttp_connection_connect_/g; s/(?<![A-Za-z0-9_])evhttp_connection_fail(?![A-Za-z0-9_])/evhttp_connection_fail_/g; s/(?<![A-Za-z0-9_])evhttp_connection_reset(?![A-Za-z0-9_])/evhttp_connection_reset_/g; s/(?<![A-Za-z0-9_])evhttp_parse_firstline(?![A-Za-z0-9_])/evhttp_parse_firstline_/g; s/(?<![A-Za-z0-9_])evhttp_parse_headers(?![A-Za-z0-9_])/evhttp_parse_headers_/g; s/(?<![A-Za-z0-9_])evhttp_response_code(?![A-Za-z0-9_])/evhttp_response_code_/g; s/(?<![A-Za-z0-9_])evhttp_send_page(?![A-Za-z0-9_])/evhttp_send_page_/g; s/(?<![A-Za-z0-9_])evhttp_start_read(?![A-Za-z0-9_])/evhttp_start_read_/g; s/(?<![A-Za-z0-9_])EVLOCK_TRY_LOCK(?![A-Za-z0-9_])/EVLOCK_TRY_LOCK_/g; s/(?<![A-Za-z0-9_])evmap_check_integrity(?![A-Za-z0-9_])/evmap_check_integrity_/g; s/(?<![A-Za-z0-9_])evmap_delete_all(?![A-Za-z0-9_])/evmap_delete_all_/g; s/(?<![A-Za-z0-9_])evmap_foreach_event(?![A-Za-z0-9_])/evmap_foreach_event_/g; s/(?<![A-Za-z0-9_])evmap_io_active(?![A-Za-z0-9_])/evmap_io_active_/g; s/(?<![A-Za-z0-9_])evmap_io_add(?![A-Za-z0-9_])/evmap_io_add_/g; s/(?<![A-Za-z0-9_])evmap_io_clear(?![A-Za-z0-9_])/evmap_io_clear_/g; s/(?<![A-Za-z0-9_])evmap_io_del(?![A-Za-z0-9_])/evmap_io_del_/g; s/(?<![A-Za-z0-9_])evmap_io_get_fdinfo(?![A-Za-z0-9_])/evmap_io_get_fdinfo_/g; s/(?<![A-Za-z0-9_])evmap_io_initmap(?![A-Za-z0-9_])/evmap_io_initmap_/g; s/(?<![A-Za-z0-9_])evmap_reinit(?![A-Za-z0-9_])/evmap_reinit_/g; s/(?<![A-Za-z0-9_])evmap_signal_active(?![A-Za-z0-9_])/evmap_signal_active_/g; s/(?<![A-Za-z0-9_])evmap_signal_add(?![A-Za-z0-9_])/evmap_signal_add_/g; s/(?<![A-Za-z0-9_])evmap_signal_clear(?![A-Za-z0-9_])/evmap_signal_clear_/g; s/(?<![A-Za-z0-9_])evmap_signal_del(?![A-Za-z0-9_])/evmap_signal_del_/g; s/(?<![A-Za-z0-9_])evmap_signal_initmap(?![A-Za-z0-9_])/evmap_signal_initmap_/g; s/(?<![A-Za-z0-9_])evrpc_hook_associate_meta(?![A-Za-z0-9_])/evrpc_hook_associate_meta_/g; s/(?<![A-Za-z0-9_])evrpc_hook_context_free(?![A-Za-z0-9_])/evrpc_hook_context_free_/g; s/(?<![A-Za-z0-9_])evrpc_hook_meta_new(?![A-Za-z0-9_])/evrpc_hook_meta_new_/g; s/(?<![A-Za-z0-9_])evrpc_reqstate_free(?![A-Za-z0-9_])/evrpc_reqstate_free_/g; s/(?<![A-Za-z0-9_])evsig_dealloc(?![A-Za-z0-9_])/evsig_dealloc_/g; s/(?<![A-Za-z0-9_])evsig_init(?![A-Za-z0-9_])/evsig_init_/g; s/(?<![A-Za-z0-9_])evsig_set_base(?![A-Za-z0-9_])/evsig_set_base_/g; s/(?<![A-Za-z0-9_])ev_token_bucket_get_tick(?![A-Za-z0-9_])/ev_token_bucket_get_tick_/g; s/(?<![A-Za-z0-9_])ev_token_bucket_init(?![A-Za-z0-9_])/ev_token_bucket_init_/g; s/(?<![A-Za-z0-9_])ev_token_bucket_update(?![A-Za-z0-9_])/ev_token_bucket_update_/g; s/(?<![A-Za-z0-9_])evutil_accept4(?![A-Za-z0-9_])/evutil_accept4_/g; s/(?<![A-Za-z0-9_])evutil_addrinfo_append(?![A-Za-z0-9_])/evutil_addrinfo_append_/g; s/(?<![A-Za-z0-9_])evutil_adjust_hints_for_addrconfig(?![A-Za-z0-9_])/evutil_adjust_hints_for_addrconfig_/g; s/(?<![A-Za-z0-9_])evutil_ersatz_socketpair(?![A-Za-z0-9_])/evutil_ersatz_socketpair_/g; s/(?<![A-Za-z0-9_])evutil_eventfd(?![A-Za-z0-9_])/evutil_eventfd_/g; s/(?<![A-Za-z0-9_])evutil_format_sockaddr_port(?![A-Za-z0-9_])/evutil_format_sockaddr_port_/g; s/(?<![A-Za-z0-9_])evutil_getaddrinfo_async(?![A-Za-z0-9_])/evutil_getaddrinfo_async_/g; s/(?<![A-Za-z0-9_])evutil_getaddrinfo_common(?![A-Za-z0-9_])/evutil_getaddrinfo_common_/g; s/(?<![A-Za-z0-9_])evutil_getenv(?![A-Za-z0-9_])/evutil_getenv_/g; s/(?<![A-Za-z0-9_])evutil_hex_char_to_int(?![A-Za-z0-9_])/evutil_hex_char_to_int_/g; s/(?<![A-Za-z0-9_])EVUTIL_ISALNUM(?![A-Za-z0-9_])/EVUTIL_ISALNUM_/g; s/(?<![A-Za-z0-9_])EVUTIL_ISALPHA(?![A-Za-z0-9_])/EVUTIL_ISALPHA_/g; s/(?<![A-Za-z0-9_])EVUTIL_ISDIGIT(?![A-Za-z0-9_])/EVUTIL_ISDIGIT_/g; s/(?<![A-Za-z0-9_])EVUTIL_ISLOWER(?![A-Za-z0-9_])/EVUTIL_ISLOWER_/g; s/(?<![A-Za-z0-9_])EVUTIL_ISPRINT(?![A-Za-z0-9_])/EVUTIL_ISPRINT_/g; s/(?<![A-Za-z0-9_])EVUTIL_ISSPACE(?![A-Za-z0-9_])/EVUTIL_ISSPACE_/g; s/(?<![A-Za-z0-9_])EVUTIL_ISUPPER(?![A-Za-z0-9_])/EVUTIL_ISUPPER_/g; s/(?<![A-Za-z0-9_])EVUTIL_ISXDIGIT(?![A-Za-z0-9_])/EVUTIL_ISXDIGIT_/g; s/(?<![A-Za-z0-9_])evutil_load_windows_system_library(?![A-Za-z0-9_])/evutil_load_windows_system_library_/g; s/(?<![A-Za-z0-9_])evutil_make_internal_pipe(?![A-Za-z0-9_])/evutil_make_internal_pipe_/g; s/(?<![A-Za-z0-9_])evutil_new_addrinfo(?![A-Za-z0-9_])/evutil_new_addrinfo_/g; s/(?<![A-Za-z0-9_])evutil_open_closeonexec(?![A-Za-z0-9_])/evutil_open_closeonexec_/g; s/(?<![A-Za-z0-9_])evutil_read_file(?![A-Za-z0-9_])/evutil_read_file_/g; s/(?<![A-Za-z0-9_])evutil_resolve(?![A-Za-z0-9_])/evutil_resolve_/g; s/(?<![A-Za-z0-9_])evutil_set_evdns_getaddrinfo_fn(?![A-Za-z0-9_])/evutil_set_evdns_getaddrinfo_fn_/g; s/(?<![A-Za-z0-9_])evutil_sockaddr_is_loopback(?![A-Za-z0-9_])/evutil_sockaddr_is_loopback_/g; s/(?<![A-Za-z0-9_])evutil_socket(?![A-Za-z0-9_])/evutil_socket_/g; s/(?<![A-Za-z0-9_])evutil_socket_connect(?![A-Za-z0-9_])/evutil_socket_connect_/g; s/(?<![A-Za-z0-9_])evutil_socket_finished_connecting(?![A-Za-z0-9_])/evutil_socket_finished_connecting_/g; s/(?<![A-Za-z0-9_])EVUTIL_TOLOWER(?![A-Za-z0-9_])/EVUTIL_TOLOWER_/g; s/(?<![A-Za-z0-9_])EVUTIL_TOUPPER(?![A-Za-z0-9_])/EVUTIL_TOUPPER_/g; s/(?<![A-Za-z0-9_])evutil_tv_to_msec(?![A-Za-z0-9_])/evutil_tv_to_msec_/g; s/(?<![A-Za-z0-9_])evutil_usleep(?![A-Za-z0-9_])/evutil_usleep_/g; s/(?<![A-Za-z0-9_])ht_improve_hash(?![A-Za-z0-9_])/ht_improve_hash_/g; s/(?<![A-Za-z0-9_])ht_string_hash(?![A-Za-z0-9_])/ht_string_hash_/g; s/(?<![A-Za-z0-9_])min_heap_adjust(?![A-Za-z0-9_])/min_heap_adjust_/g; s/(?<![A-Za-z0-9_])min_heap_ctor(?![A-Za-z0-9_])/min_heap_ctor_/g; s/(?<![A-Za-z0-9_])min_heap_dtor(?![A-Za-z0-9_])/min_heap_dtor_/g; s/(?<![A-Za-z0-9_])min_heap_elem_init(?![A-Za-z0-9_])/min_heap_elem_init_/g; s/(?<![A-Za-z0-9_])min_heap_elt_is_top(?![A-Za-z0-9_])/min_heap_elt_is_top_/g; s/(?<![A-Za-z0-9_])min_heap_empty(?![A-Za-z0-9_])/min_heap_empty_/g; s/(?<![A-Za-z0-9_])min_heap_erase(?![A-Za-z0-9_])/min_heap_erase_/g; s/(?<![A-Za-z0-9_])min_heap_pop(?![A-Za-z0-9_])/min_heap_pop_/g; s/(?<![A-Za-z0-9_])min_heap_push(?![A-Za-z0-9_])/min_heap_push_/g; s/(?<![A-Za-z0-9_])min_heap_reserve(?![A-Za-z0-9_])/min_heap_reserve_/g; s/(?<![A-Za-z0-9_])min_heap_size(?![A-Za-z0-9_])/min_heap_size_/g; s/(?<![A-Za-z0-9_])min_heap_top(?![A-Za-z0-9_])/min_heap_top_/g;
	68120d9b	2012-02-29T15:07:31		Convert event-config.h macros to avoid reserved identifiers C reserves all identifiers beginning with an underscore for system use. But we had been mangling our autoconf identifiers with the prefix "_EVENT_" to avoid conflict with other programs. Instead, we will now use the prefix "EVENT__". With any luck, the double-underscore will still hint "here be dragons" to anybody tempted to think that event-config.h is a stable api. This is an automatically generated patch. The script that produced it was made by running this script over config.h.in: ===== #!/usr/bin/perl -w # Run this on config.h.in use strict; my %macros = (); while (<>) { if (/^# *undef +([A-Za-z0-9_]+)/) { $macros{$1} = 1; } } print "#!/usr/bin/perl -w -i -p\n\n"; for my $k (sort keys %macros) { print "s/(?<![A-Za-z0-9_])_EVENT_$k(?![A-Za-z0-9_])/EVENT__$k/g;\n"; } == And the script that it generated was then run over all .c and .h files: #!/usr/bin/perl -w -i -p s/(?<![A-Za-z0-9_])_EVENT_DISABLE_DEBUG_MODE(?![A-Za-z0-9_])/EVENT__DISABLE_DEBUG_MODE/g; s/(?<![A-Za-z0-9_])_EVENT_DISABLE_MM_REPLACEMENT(?![A-Za-z0-9_])/EVENT__DISABLE_MM_REPLACEMENT/g; s/(?<![A-Za-z0-9_])_EVENT_DISABLE_THREAD_SUPPORT(?![A-Za-z0-9_])/EVENT__DISABLE_THREAD_SUPPORT/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_ACCEPT4(?![A-Za-z0-9_])/EVENT__HAVE_ACCEPT4/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_ARC4RANDOM(?![A-Za-z0-9_])/EVENT__HAVE_ARC4RANDOM/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_ARC4RANDOM_BUF(?![A-Za-z0-9_])/EVENT__HAVE_ARC4RANDOM_BUF/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_ARPA_INET_H(?![A-Za-z0-9_])/EVENT__HAVE_ARPA_INET_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_CLOCK_GETTIME(?![A-Za-z0-9_])/EVENT__HAVE_CLOCK_GETTIME/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_DECL_CTL_KERN(?![A-Za-z0-9_])/EVENT__HAVE_DECL_CTL_KERN/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_DECL_KERN_ARND(?![A-Za-z0-9_])/EVENT__HAVE_DECL_KERN_ARND/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_DECL_KERN_RANDOM(?![A-Za-z0-9_])/EVENT__HAVE_DECL_KERN_RANDOM/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_DECL_RANDOM_UUID(?![A-Za-z0-9_])/EVENT__HAVE_DECL_RANDOM_UUID/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_DEVPOLL(?![A-Za-z0-9_])/EVENT__HAVE_DEVPOLL/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_DLFCN_H(?![A-Za-z0-9_])/EVENT__HAVE_DLFCN_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_EPOLL(?![A-Za-z0-9_])/EVENT__HAVE_EPOLL/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_EPOLL_CREATE1(?![A-Za-z0-9_])/EVENT__HAVE_EPOLL_CREATE1/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_EPOLL_CTL(?![A-Za-z0-9_])/EVENT__HAVE_EPOLL_CTL/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_EVENTFD(?![A-Za-z0-9_])/EVENT__HAVE_EVENTFD/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_EVENT_PORTS(?![A-Za-z0-9_])/EVENT__HAVE_EVENT_PORTS/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_FCNTL(?![A-Za-z0-9_])/EVENT__HAVE_FCNTL/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_FCNTL_H(?![A-Za-z0-9_])/EVENT__HAVE_FCNTL_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_FD_MASK(?![A-Za-z0-9_])/EVENT__HAVE_FD_MASK/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETADDRINFO(?![A-Za-z0-9_])/EVENT__HAVE_GETADDRINFO/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETEGID(?![A-Za-z0-9_])/EVENT__HAVE_GETEGID/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETEUID(?![A-Za-z0-9_])/EVENT__HAVE_GETEUID/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETHOSTBYNAME_R(?![A-Za-z0-9_])/EVENT__HAVE_GETHOSTBYNAME_R/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETHOSTBYNAME_R_3_ARG(?![A-Za-z0-9_])/EVENT__HAVE_GETHOSTBYNAME_R_3_ARG/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETHOSTBYNAME_R_5_ARG(?![A-Za-z0-9_])/EVENT__HAVE_GETHOSTBYNAME_R_5_ARG/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETHOSTBYNAME_R_6_ARG(?![A-Za-z0-9_])/EVENT__HAVE_GETHOSTBYNAME_R_6_ARG/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETIFADDRS(?![A-Za-z0-9_])/EVENT__HAVE_GETIFADDRS/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETNAMEINFO(?![A-Za-z0-9_])/EVENT__HAVE_GETNAMEINFO/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETPROTOBYNUMBER(?![A-Za-z0-9_])/EVENT__HAVE_GETPROTOBYNUMBER/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETSERVBYNAME(?![A-Za-z0-9_])/EVENT__HAVE_GETSERVBYNAME/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETTIMEOFDAY(?![A-Za-z0-9_])/EVENT__HAVE_GETTIMEOFDAY/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_IFADDRS_H(?![A-Za-z0-9_])/EVENT__HAVE_IFADDRS_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_INET_ATON(?![A-Za-z0-9_])/EVENT__HAVE_INET_ATON/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_INET_NTOP(?![A-Za-z0-9_])/EVENT__HAVE_INET_NTOP/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_INET_PTON(?![A-Za-z0-9_])/EVENT__HAVE_INET_PTON/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_INTTYPES_H(?![A-Za-z0-9_])/EVENT__HAVE_INTTYPES_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_ISSETUGID(?![A-Za-z0-9_])/EVENT__HAVE_ISSETUGID/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_KQUEUE(?![A-Za-z0-9_])/EVENT__HAVE_KQUEUE/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_LIBZ(?![A-Za-z0-9_])/EVENT__HAVE_LIBZ/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_MEMORY_H(?![A-Za-z0-9_])/EVENT__HAVE_MEMORY_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_MMAP(?![A-Za-z0-9_])/EVENT__HAVE_MMAP/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_NANOSLEEP(?![A-Za-z0-9_])/EVENT__HAVE_NANOSLEEP/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_NETDB_H(?![A-Za-z0-9_])/EVENT__HAVE_NETDB_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_NETINET_IN6_H(?![A-Za-z0-9_])/EVENT__HAVE_NETINET_IN6_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_NETINET_IN_H(?![A-Za-z0-9_])/EVENT__HAVE_NETINET_IN_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_NETINET_TCP_H(?![A-Za-z0-9_])/EVENT__HAVE_NETINET_TCP_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_OPENSSL(?![A-Za-z0-9_])/EVENT__HAVE_OPENSSL/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_PIPE(?![A-Za-z0-9_])/EVENT__HAVE_PIPE/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_PIPE2(?![A-Za-z0-9_])/EVENT__HAVE_PIPE2/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_POLL(?![A-Za-z0-9_])/EVENT__HAVE_POLL/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_POLL_H(?![A-Za-z0-9_])/EVENT__HAVE_POLL_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_PORT_CREATE(?![A-Za-z0-9_])/EVENT__HAVE_PORT_CREATE/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_PORT_H(?![A-Za-z0-9_])/EVENT__HAVE_PORT_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_PTHREAD(?![A-Za-z0-9_])/EVENT__HAVE_PTHREAD/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_PTHREADS(?![A-Za-z0-9_])/EVENT__HAVE_PTHREADS/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_PUTENV(?![A-Za-z0-9_])/EVENT__HAVE_PUTENV/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SA_FAMILY_T(?![A-Za-z0-9_])/EVENT__HAVE_SA_FAMILY_T/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SELECT(?![A-Za-z0-9_])/EVENT__HAVE_SELECT/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SENDFILE(?![A-Za-z0-9_])/EVENT__HAVE_SENDFILE/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SETENV(?![A-Za-z0-9_])/EVENT__HAVE_SETENV/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SETFD(?![A-Za-z0-9_])/EVENT__HAVE_SETFD/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SETRLIMIT(?![A-Za-z0-9_])/EVENT__HAVE_SETRLIMIT/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SIGACTION(?![A-Za-z0-9_])/EVENT__HAVE_SIGACTION/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SIGNAL(?![A-Za-z0-9_])/EVENT__HAVE_SIGNAL/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SPLICE(?![A-Za-z0-9_])/EVENT__HAVE_SPLICE/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STDARG_H(?![A-Za-z0-9_])/EVENT__HAVE_STDARG_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STDDEF_H(?![A-Za-z0-9_])/EVENT__HAVE_STDDEF_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STDINT_H(?![A-Za-z0-9_])/EVENT__HAVE_STDINT_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STDLIB_H(?![A-Za-z0-9_])/EVENT__HAVE_STDLIB_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRINGS_H(?![A-Za-z0-9_])/EVENT__HAVE_STRINGS_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRING_H(?![A-Za-z0-9_])/EVENT__HAVE_STRING_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRLCPY(?![A-Za-z0-9_])/EVENT__HAVE_STRLCPY/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRSEP(?![A-Za-z0-9_])/EVENT__HAVE_STRSEP/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRTOK_R(?![A-Za-z0-9_])/EVENT__HAVE_STRTOK_R/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRTOLL(?![A-Za-z0-9_])/EVENT__HAVE_STRTOLL/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_ADDRINFO(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_ADDRINFO/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_IN6_ADDR(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_IN6_ADDR/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_IN6_ADDR_S6_ADDR16(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_IN6_ADDR_S6_ADDR16/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_IN6_ADDR_S6_ADDR32(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_IN6_ADDR_S6_ADDR32/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_SOCKADDR_IN6(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_SOCKADDR_IN6/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_SOCKADDR_IN6_SIN6_LEN(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_SOCKADDR_IN6_SIN6_LEN/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_SOCKADDR_IN_SIN_LEN(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_SOCKADDR_IN_SIN_LEN/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_SOCKADDR_STORAGE(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_SOCKADDR_STORAGE/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_SOCKADDR_STORAGE___SS_FAMILY(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_SOCKADDR_STORAGE___SS_FAMILY/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYSCTL(?![A-Za-z0-9_])/EVENT__HAVE_SYSCTL/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_DEVPOLL_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_DEVPOLL_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_EPOLL_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_EPOLL_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_EVENTFD_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_EVENTFD_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_EVENT_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_EVENT_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_IOCTL_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_IOCTL_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_MMAN_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_MMAN_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_PARAM_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_PARAM_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_QUEUE_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_QUEUE_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_RESOURCE_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_RESOURCE_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_SELECT_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_SELECT_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_SENDFILE_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_SENDFILE_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_SOCKET_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_SOCKET_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_STAT_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_STAT_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_SYSCTL_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_SYSCTL_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_TIME_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_TIME_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_TYPES_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_TYPES_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_UIO_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_UIO_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_WAIT_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_WAIT_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_TAILQFOREACH(?![A-Za-z0-9_])/EVENT__HAVE_TAILQFOREACH/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_TIMERADD(?![A-Za-z0-9_])/EVENT__HAVE_TIMERADD/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_TIMERCLEAR(?![A-Za-z0-9_])/EVENT__HAVE_TIMERCLEAR/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_TIMERCMP(?![A-Za-z0-9_])/EVENT__HAVE_TIMERCMP/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_TIMERISSET(?![A-Za-z0-9_])/EVENT__HAVE_TIMERISSET/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_UINT16_T(?![A-Za-z0-9_])/EVENT__HAVE_UINT16_T/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_UINT32_T(?![A-Za-z0-9_])/EVENT__HAVE_UINT32_T/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_UINT64_T(?![A-Za-z0-9_])/EVENT__HAVE_UINT64_T/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_UINT8_T(?![A-Za-z0-9_])/EVENT__HAVE_UINT8_T/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_UINTPTR_T(?![A-Za-z0-9_])/EVENT__HAVE_UINTPTR_T/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_UNISTD_H(?![A-Za-z0-9_])/EVENT__HAVE_UNISTD_H/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_UNSETENV(?![A-Za-z0-9_])/EVENT__HAVE_UNSETENV/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_USLEEP(?![A-Za-z0-9_])/EVENT__HAVE_USLEEP/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_VASPRINTF(?![A-Za-z0-9_])/EVENT__HAVE_VASPRINTF/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_WORKING_KQUEUE(?![A-Za-z0-9_])/EVENT__HAVE_WORKING_KQUEUE/g; s/(?<![A-Za-z0-9_])_EVENT_HAVE_ZLIB_H(?![A-Za-z0-9_])/EVENT__HAVE_ZLIB_H/g; s/(?<![A-Za-z0-9_])_EVENT_LT_OBJDIR(?![A-Za-z0-9_])/EVENT__LT_OBJDIR/g; s/(?<![A-Za-z0-9_])_EVENT_NO_MINUS_C_MINUS_O(?![A-Za-z0-9_])/EVENT__NO_MINUS_C_MINUS_O/g; s/(?<![A-Za-z0-9_])_EVENT_NUMERIC_VERSION(?![A-Za-z0-9_])/EVENT__NUMERIC_VERSION/g; s/(?<![A-Za-z0-9_])_EVENT_PACKAGE(?![A-Za-z0-9_])/EVENT__PACKAGE/g; s/(?<![A-Za-z0-9_])_EVENT_PACKAGE_BUGREPORT(?![A-Za-z0-9_])/EVENT__PACKAGE_BUGREPORT/g; s/(?<![A-Za-z0-9_])_EVENT_PACKAGE_NAME(?![A-Za-z0-9_])/EVENT__PACKAGE_NAME/g; 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	a220a081	2012-02-15T21:07:44		Merge remote-tracking branch 'github/21_fast_syscalls'
	87a7cded	2012-02-10T23:52:27		Merge branch 'ifdef' of git://github.com/rosslagerwall/libevent
	539466e5	2012-02-10T17:33:50		Merge remote-tracking branch 'origin/patches-2.0' Conflicts: Makefile.am WIN32-Code/event2/event-config.h configure.in
	e49e2891	2012-02-10T17:29:53		Update copyright notices to 2012
	bac906c7	2012-02-10T16:39:46		Prefer epoll_create1 on Linuxen that have it
	76d4c929	2012-02-08T18:46:00		Put #ifdef around some files to support alternate build systems.
	0cb70e33	2011-10-26T10:17:21		Merge remote-tracking branch 'origin/patches-2.0'
	1aee7183	2011-10-26T13:24:30		epoll: close fd on alloc fail at initialization If the memory allocations fail then we free any other allocated structures but don't close the file descriptor resulting in an leak of fd's.
	3c824bd3	2011-10-24T13:18:09		Update copyright dates to 2011.
	0915ca0a	2011-01-02T08:43:45		Include evconfig-private.h in internal files for great good.
	d4970d4e	2010-12-16T14:36:09		Reindent epoll_apply_one_change()
	2d55a190	2010-12-16T14:25:04		Clean up error handling in epoll_apply_one_change() a little The old code was more or less: if (op == X && errno == FOO) { ... } else if (op == Y && errno == BAR) { ... } but really we wanted to do a switch (op) to avoid needless checks and branches. This patch leaves the indentation a little weird so as to make it easier to see what changed; the next patch will fix the indentation.
	8c83eb69	2010-10-24T12:53:52		Replace big chain of if/thens in epoll.c with a table lookup This should save a bunch of branches by doing instead a lookup in a nice static table. To ensure correctness, the table is generated from a Python script, included with this commit.
	9531763a	2010-11-14T17:52:16		Disable changelist for epoll by default because of Linux dup() bug; add an option and/or an envvar to reenable it for speed. Rename option to control epoll changelist; make epoll changelist off by default
	2c66983a	2010-10-24T11:51:14		Simplify the logic for choosing EPOLL_CTL_ADD vs EPOLL_CTL_MOD Previously, we chose "ADD" whenever old_events==new_events, (since we expected the add to fail with EEXIST), or whenever old_events was==0, and MOD otherwise (i.e., when old_events was nonzero and not equal to new_events). But now that we retry failed MOD events as ADD *and* failed ADD events as MOD, the important thing is now to try to guess right the largest amount of the time, since guessing right means we do only one syscall, but guessing wrong means we do two. When old_events is 0, ADD is probably right (unless we're hitting the dup bug, when we'll fall back). And when old_events is set and != new_events, MOD is almost certainly right for the same reasons as before. But when old_events is equal to new events, then MOD will work fine unless we closed and reopened the fd, in which case we'll have to fall back to the ADD case. (Redundant del/add pairs are more common than closes for most use cases.) This change lets us avoid calculating new_events, which ought to save a little time in epoll.c
	c281aba3	2010-10-24T11:38:29		Fix a nasty bug related to use of dup() with epoll on Linux Current versions of the Linux kernel don't seem to remove the struct epitem for a given (file,fd) combo when the fd is closed unless the file itself is also completely closed. This means that if you do: fd = dup(fd_orig); add(fd); close(fd); dup2(fd_orig, fd); add(fd); you will get an EEXIST when you should have gotten a success. This could cause warnings and dropped events when using dup and epoll. The solution is pretty simple: when we get an EEXIST from EPOLL_CTL_ADD, we retry with EPOLL_CTL_MOD. Unit test included to demonstrate the bug. Found due to the patient efforts of Gilad Benjamini; diagnosed with help from Nicholas Marriott.
	0faaee01	2010-09-30T23:15:47		Fix a spurious-call bug on epoll.c We were trying to check whether any events had really been notified on an fd before calling evmap_io_active on it, but instead we were checking for an event pointer, which was always true. In practice, this patch shouldn't change much, since epoll_wait shouldn't return an event unless there is actually an event going on. Spotted by an anonymous bug reporter on Sourceforge. Closes bug 3078425.
	ec2b05ed	2010-09-21T22:23:32		Make debugging output for epoll backend more comprehensive
	4858b794	2010-09-15T01:54:51		Remove the now-useless evsig_caught and evsig_process
	ec347b92	2010-07-07T16:45:03		Move event-config.h to include/event2 This change means that all required include files are in event2, and all files not in event2/* are optional.
	9e725f72	2010-07-29T18:12:05		Improve error message for failed epoll to make debugging easier.
	e73cbde1	2010-07-08T14:41:02		Suppress a spurious EPERM warning in epoll.c It's okay for us to get an EPERM when doing an EPOLL_DEL on an fd; it just means that before we got a chance to the EPOLL_DEL, we closed the fd and reopened a new non-socket that wound up having the same fd. Partial fix for Bug 3019973.
	850c3ff2	2010-03-31T20:30:55		Add evutil_tv_to_msec for safe conversion of timevals to milliseconds. This is useful for backends that require their timeout values be in milliseconds.
	2c2618d8	2010-03-05T13:00:15		more whitespace normalization
	17efc1cd	2010-03-04T01:25:51		Update all our copyright notices to say "2010"
	c8c6a897	2010-01-16T15:24:58		Minimize epoll_ctl calls by using changelist The logic here is a little complex, since epoll_add must used called exactly when no events were previously set, epoll_mod must be used when any events were previously set, and epoll_del only called when the removing all events.
	d0939d2b	2009-12-29T16:21:26		Introduced evutil_make_socket_closeonexec() to preserve fd flags for F_SETFD. Use this to eliminate the various macros that called F_SETFD throughout the code.
	76cd2b70	2009-11-27T16:44:47		Stop passing EVTHREAD_READ and EVTHREAD_WRITE to non-rw locks. Previously, our default lock model kind of assumed that every lock was potentially a read-write lock. This was a poor choice, since read-write locks are far more expensive than regular locks, and so the lock API should only use them when we can actually take advantage of them. Neither our pthreads or win32 lock implementation provided rw locks. Now that we have a way (not currently used!) to indicate that we really want a read-write lock, we shouldn't actually say "lock this for reading" or "lock this for writing" unless we mean it.
	18a8cfac	2009-11-15T19:00:12		Prefer calloc(a,b) to malloc(a*b). via openbsd. svn:r1531
	784b8773	2009-11-06T21:46:57		We do not work any more without an event-config.h; stop pretending that it is meaningful to check for HAVE_CONFIG_H svn:r1516
	0fd0255f	2009-11-03T19:54:56		Remove compat/sys/_time.h I've gone through everything that it declared to see where it was used, and it seems that we probably don't need it anywhere. Here's what it declared, and why I think we're okay dropping it. o struct timeval {} (Used all over, and we can't really get away with declaring it ourselves; we need the same definition the system uses. If we can't find struct timeval, we're pretty much sunk.) o struct timespec {} (Used in event.c, evdns.c, kqueue.c, evport.c. Of these, kqueue.c and event.c include sys/_time.h. event.c conditions its use on _EVENT_HAVE_CLOCK_GETTIME, and kqueue() only works if timespec is defined.) o TIMEVAL_TO_TIMESPEC (Used in kqueue.c, but every place with kqueue has sys/time.h) o struct timezone {} (event2/util.h has a forward declaration; only evutil.c references it and doesn't look at its contents.) o timerclear, timerisset, timercmp, timeradd, timersub (Everything now uses the evutil_timer* variants.) o ITIMER_REAL, ITIMER_VIRTUAL, ITIMER_PROF, struct itemerval (These are only used in test/regress.c, which does not include _time.h) o CLOCK_REALTIME (Only used in evdns.c, which does not include _time.h) o TIMESPEC_TO_TIMEVAL o DST_* o timespecclear, timespecisset, timespeccmp, timespecadd, timespecsub o struct clockinfo {} o CLOCK_VIRTUAL, CLOCK_PROF o TIMER_RELTIME, TIMER_ABSTIME (unused) svn:r1494
	2e36dbe1	2009-10-26T20:00:43		Use EVUTIL_ASSERT() consistently instead of assert. svn:r1464
	6b22e74a	2009-10-21T03:54:00		Add locking to event_base_loop. This is harder than it sounds, since we need to make sure to release the lock around the key call to the kernel (e.g., select, epoll_wait, kevent), AND we need to make sure that none of the fields that are used in that call are touched by anything that might be running concurrently in another thread. I managed to do this pretty well for everything but poll(). With poll, I needed to introduce a copy of the event_set structure. This patch also fixes a bug in win32.c where we called realloc() instead of mm_realloc(). svn:r1450
	e3fd294a	2009-10-16T13:19:57		Spelling fixes in comments and strings. svn:r1445
	2622e5ac	2009-09-16T17:17:57		Fix the assert I added to epoll.c: spotted by Dmitry Novikov svn:r1432
	85255a63	2009-09-11T18:47:35		Make epoll use less RAM. We do this by not allocating the maximum epoll_event array for the epoll backend at startup. Instead, we start out accepting 32 events at a time, and double the array's size when it seems that the OS is generating events faster than we're requesting them. This saves up to 374K per epoll-based event_base. Resolves bug 2839240. svn:r1428
	b85b710c	2009-01-27T22:34:36		Update copyright statements to reflect the facts that: a) this is 2009 b) niels and nick have been comaintainers for a while c) saying "all rights reserved" when you then go on to explicitly disclaim some rights is sheer cargo-cultism. svn:r1065
	8889a770	2009-01-27T22:30:46		Replace all use of config.h with event-config.h. svn:r1064
	554e1493	2009-01-14T20:52:32		Move per-fd info from eventops into evmap. Not done for win32.c yet. svn:r1008
	169321c9	2009-01-13T20:26:37		Rename four internal headers to follow the -internal.h convention. svn:r1000
	d776f846	2008-12-23T22:23:37		deprecate the usage of signal_{add,del,set} and name it evsignal_{add,del,set} instead; move the old definitions to compat svn:r973
	02b2b4d1	2008-12-23T16:37:01		Restructure the event backends so that they do not need to keep track of events themselves, as a side effect multiple events can use the same fd or signal. svn:r972
	808f00e1	2008-12-13T06:11:12		constify structs; from Andrei Nigmatulin svn:r959
	05965921	2008-05-31T14:37:31		Add new functions to access backends by their features and to query the features of a backend. svn:r842
	39400e68	2008-05-30T16:56:34		Patch from Valery Kholodkov: support for edge-triggered events with epoll and kqueue. Changed from original patch: made test into a regression test, with explicit success/failure for edge-triggered and non-edge-triggered cases. Closes SF request 1968284. svn:r840
	2deb3ce0	2008-05-29T01:39:43		simplify handling of environment variables for disabling backends; make event_get_supported_methods obey environment variables; this fixes make verify; problem reported by Scott Lamb. svn:r838
	49868b61	2008-04-25T01:18:08		r15316@tombo: nickm | 2008-04-24 20:58:36 -0400 Rename internal memory management functions from event_malloc() etc to mm_malloc() etc. svn:r725
	3f3a1675	2008-04-17T19:17:50		r15219@tombo: nickm | 2008-04-17 15:12:17 -0400 Use new includes in epoll.c svn:r716
	f9f4d4fe	2008-04-11T20:02:50		r19309@catbus: nickm | 2008-04-11 16:02:07 -0400 Fix for epoll-on-linux bug (#1908866) where timeout values over (LONG_MAX-999)/HZ) (35 for me, or maybe 6 hours 50 min for some people, or maybe 3 hours 25 minutes for a special few) get treated as "wait forever". This actually deserves to be fixed in the kernel, but even if it is we will need to support Linux versions with this bug. svn:r709
	44ceb945	2008-04-10T19:34:50		r19305@catbus: nickm | 2008-04-10 15:34:10 -0400 Fix bug 1938754: do not warn when epoll_create() fails with ENOSYS. svn:r706
	ca42671a	2008-03-29T01:45:45		make event methods static so that they are not exported; from Andrei Nigmatulin svn:r692
	d80c1c36	2007-12-16T19:34:09		r17185@catbus: nickm | 2007-12-16 14:33:40 -0500 Fix compilation with --enable-gcc-warnings enabled. svn:r599
	fbe24f43	2007-12-09T05:07:20		remove obsoleted recalc code svn:r581
	5f3e3159	2007-11-27T01:39:10		move EV_PERSIST handling out of the event backends svn:r555
	7eb250e9	2007-11-25T17:14:19		r14939@tombo: nickm | 2007-11-25 11:59:26 -0500 New function event_set_mem_functions to replace internal calls to malloc, free, etc with a user-supplied functions. svn:r541
	88897852	2007-11-25T06:57:59		provide event_reinit() to reinitialized an event_base after fork - necessary for epoll/kqueue svn:r539
	bbed0954	2007-11-11T03:05:03		revert r505; it introduced errors in epoll svn:r508
	9f0f3d6d	2007-11-10T05:18:11		r16584@catbus: nickm | 2007-11-10 00:00:59 -0500 Patch from Christopher Lane: reduce branch count in epoll_dispatch.c and generally improve clarity. svn:r505
	3c1bbca6	2007-11-07T02:30:17		r14744@tombo: nickm | 2007-11-06 21:30:11 -0500 Fix coding error: patch from Charles Kerr. svn:r483
	d257a4c0	2007-11-06T20:57:32		r16454@catbus: nickm | 2007-11-06 09:59:45 -0500 Small code cleanups in epoll_dispatch(): remove a needless variable and some redundant conditionals. svn:r478
	2026b215	2007-11-03T23:53:49		remove last vestiges of RBTREE svn:r470
	3ad6b47e	2007-07-30T22:41:00		make clock_monotonic work; do not use default timeout; from Scott Lamb, plus some fixes from me. svn:r371
	41b7cbc3	2007-03-10T06:37:53		more the signal base into the event base; this removes global state and makes signals work better with threading; from Wouter Wijngaards small fixes for kqueue and style by me svn:r351
	b5d2f9a2	2007-03-01T06:25:18		rolling back r339: evconfig.h does not work svn:r341
	8d94bd03	2007-02-28T04:29:18		signal fixes from scott lamb svn:r340
	127c260b	2007-02-28T04:02:29		make evconfig.h available as installed header file; not really ideal but good enough for me; from Nick Mathewson svn:r339
	2e8051f5	2006-03-28T04:40:54		introduce a way to free the base from Nick Mathewson <nickm@freehaven.net> svn:r210
	65644dfb	2005-11-12T19:04:17		solaris kernel changes are not backwards compatible - how retarded. problem pointed out by: Geoffrey Giesemann svn:r185
	cdcfae7f	2005-05-10T08:14:39		call epoll_ctl after changing our state table; in case that epoll_ctl fails we need to make sure that the table is consistent. from William Ahern svn:r162
	1919a4ae	2005-03-31T19:53:06		suppress valgrind warnings from knew -a- pimb.org svn:r138
	fbdaf3ab	2005-03-29T07:03:10		debugging callbacks from Nick Mathewson <nickm@freehaven.net> svn:r136
	3ba224db	2005-01-03T18:58:40		fixes for threaded operations from Andrew Danforth svn:r129
	8773c4c9	2004-11-25T09:50:18		make libevent thread-safe; first cut svn:r122
	96a25ae6	2004-09-19T22:38:34		when converting usec to msec round up; so that libevent does not spin until the time conversion has caught up; from Aaron Hopkins <aaron at die.net> svn:r121
	6df2ede5	2004-08-10T18:29:37		close file descriptors on exec(); suggested by aaron at die.net svn:r119
	e1cd86d7	2003-10-25T21:58:33		fixes to handle error cases by Anatoly Vorobey at pobox.com svn:r90
	c3f496c7	2003-10-04T23:27:26		minor corrections; change license to 3-clause BSD license svn:r84
	cde427c1	2003-06-24T14:45:21		found a bug where specifying both read|write for a single event let to a crash; found by Bruno Achauer svn:r73
	b0b72eb0	2003-04-09T18:12:11		use maximum number of fds for epoll_create; from Davide Libenzi svn:r63
	1ed00256	2003-03-10T05:13:02		fix type svn:r58
	eb646205	2003-03-09T23:29:04		style svn:r54
	28d248e0	2003-03-08T16:50:27		copyright svn:r52