libev-4.22.tar.gz 2015-12-20

Changes

@@ -1,5 +1,134 @@
 Revision history for libev, a high-performance and full-featured event loop.
 
+TODO: ev_loop_wakeup
+TODO: EV_STANDALONE == NO_HASSEL (do not use clock_gettime in ev_standalone)
+TODO: faq, process a thing in each iteration
+TODO: dbeugging tips, ev_verify, ev_init twice
+TODO: ev_break for immediate exit (EVBREAK_NOW?)
+TODO: ev_feed_child_event
+TODO: document the special problem of signals around fork.
+TODO: store pid for each signal
+TODO: document file descriptor usage per loop
+TODO: store loop pid_t and compare isndie signal handler,store 1 for same, 2 for differign pid, clean up in loop_fork
+TODO: embed watchers need updating when fd changes
+TODO: document portability requirements for atomic pointer access
+TODO: document requirements for function pointers and calling conventions.
+
+4.22 Sun Dec 20 22:11:50 CET 2015
+	- when epoll detects unremovable fds in the fd set, rebuild
+          only the epoll descriptor, not the signal pipe, to avoid
+          SIGPIPE in ev_async_send. This doesn't solve it on fork,
+          so document what needs to be done in ev_loop_fork
+          (analyzed by Benjamin Mahler).
+	- remove superfluous sys/timeb.h include on win32
+          (analyzed by Jason Madden).
+        - updated libecb.
+
+4.20 Sat Jun 20 13:01:43 CEST 2015
+	- prefer noexcept over throw () with C++ 11.
+        - update ecb.h due to incompatibilities with c11.
+        - fix a potential aliasing issue when reading and writing
+          watcher callbacks.
+
+4.19 Thu Sep 25 08:18:25 CEST 2014
+	- ev.h wasn't valid C++ anymore, which tripped compilers other than
+          clang, msvc or gcc (analyzed by Raphael 'kena' Poss). Unfortunately,
+          C++ doesn't support typedefs for function pointers fully, so the affected
+          declarations have to spell out the types each time.
+	- when not using autoconf, tighten the check for clock_gettime and related
+          functionality.
+
+4.18 Fri Sep  5 17:55:26 CEST 2014
+	- events on files were not always generated properly with the
+          epoll backend (testcase by Assaf Inbal).
+	- mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
+        - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
+        - use a reasonable fallback for EV_NSIG instead of erroring out
+          when we can't detect the signal set size.
+        - in the absence of autoconf, do not use the clock syscall
+          on glibc >= 2.17 (avoids the syscall AND -lrt on systems
+          doing clock_gettime in userspace).
+        - ensure extern "C" function pointers are used for externally-visible
+          loop callbacks (not watcher callbacks yet).
+        - (ecb) work around memory barriers and volatile apparently both being
+          broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
+
+4.15 Fri Mar  1 12:04:50 CET 2013
+        - destroying a non-default loop would stop the global waitpid
+          watcher (Denis Bilenko).
+	- queueing pending watchers of higher priority from a watcher now invokes
+          them in a timely fashion (reported by Denis Bilenko).
+	- add throw() to all libev functions that cannot throw exceptions, for
+          further code size decrease when compiling for C++.
+        - add throw () to callbacks that must not throw exceptions (allocator,
+          syserr, loop acquire/release, periodic reschedule cbs).
+	- fix event_base_loop return code, add event_get_callback, event_base_new,
+          event_base_get_method calls to improve libevent 1.x emulation and add
+          some libevent 2.x functionality (based on a patch by Jeff Davey).
+        - add more memory fences to fix a bug reported by Jeff Davey. Better
+          be overfenced than underprotected.
+	- ev_run now returns a boolean status (true meaning watchers are
+          still active).
+	- ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with
+          libev's EV_ERROR (reported by 191919).
+	- (ecb) add memory fence support for xlC (Darin McBride).
+	- (ecb) add memory fence support for gcc-mips (Anton Kirilov).
+	- (ecb) add memory fence support for gcc-alpha (Christian Weisgerber).
+        - work around some kernels losing file descriptors by leaking
+          the kqueue descriptor in the child.
+        - work around linux inotify not reporting IN_ATTRIB changes for directories
+          in many cases.
+        - include sys/syscall.h instead of plain syscall.h.
+        - check for io watcher loops in ev_verify, check for the most
+          common reported usage bug in ev_io_start.
+        - choose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
+        - always use WSASend/WSARecv directly on windows, hoping that this
+          works in all cases (unlike read/write/send/recv...).
+        - try to detect signals around a fork faster (test program by
+          Denis Bilenko).
+        - work around recent glibc versions that leak memory in realloc.
+        - rename ev::embed::set to ev::embed::set_embed to avoid clashing
+          the watcher base set (loop) method.
+        - rewrite the async/signal pipe logic to always keep a valid fd, which
+          simplifies (and hopefully correctifies :) the race checking
+          on fork, at the cost of one extra fd.
+        - add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of
+          inotify-supporting filesystems.
+        - move orig_CFLAGS assignment to after AC_INIT, as newer autoconf
+          versions ignore it before
+          (https://bugzilla.redhat.com/show_bug.cgi?id=908096).
+        - add some untested android support.
+        - enum expressions must be of type int (reported by Juan Pablo L).
+
+4.11 Sat Feb  4 19:52:39 CET 2012
+	- INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as
+          was documented already, but not implemented in the repeating case.
+        - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS.
+	- fix a race where the workaround against the epoll fork bugs
+          caused signals to not be handled anymore.
+	- correct backend_fudge for most backends, and implement a windows
+          specific workaround to avoid looping because we call both
+          select and Sleep, both with different time resolutions.
+        - document range and guarantees of ev_sleep.
+        - document reasonable ranges for periodics interval and offset.
+        - rename backend_fudge to backend_mintime to avoid future confusion :)
+	- change the default periodic reschedule function to hopefully be more
+          exact and correct even in corner cases or in the far future.
+        - do not rely on -lm anymore: use it when available but use our
+          own floor () if it is missing. This should make it easier to embed,
+          as no external libraries are required.
+        - strategically import macros from libecb and mark rarely-used functions
+          as cache-cold (saving almost 2k code size on typical amd64 setups).
+        - add Symbols.ev and Symbols.event files, that were missing.
+        - fix backend_mintime value for epoll (was 1/1024, is 1/1000 now).
+        - fix #3 "be smart about timeouts" to not "deadlock" when
+          timeout == now, also improve the section overall.
+        - avoid "AVOIDING FINISHING BEFORE RETURNING" idiom.
+        - support new EV_API_STATIC mode to make all libev symbols
+          static.
+        - supply default CFLAGS of -g -O3 with gcc when original CFLAGS
+          were empty.
+
 4.04 Wed Feb 16 09:01:51 CET 2011
 	- fix two problems in the native win32 backend, where reuse of fd's
           with different underlying handles caused handles not to be removed
@@ -94,7 +223,7 @@ Revision history for libev, a high-performance and full-featured event loop.
           that this is a race condition regardless of EV_SIGNALFD.
 	- backport inotify code to C89.
         - inotify file descriptors could leak into child processes.
-        - ev_stat watchers could keep an errornous extra ref on the loop,
+        - ev_stat watchers could keep an erroneous extra ref on the loop,
           preventing exit when unregistering all watchers (testcases
           provided by [email protected]).
         - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration
@@ -162,8 +291,8 @@ Revision history for libev, a high-performance and full-featured event loop.
           Malek Hadj-Ali).
         - implement ev_suspend and ev_resume.
         - new EV_CUSTOM revents flag for use by applications.
-        - add documentation section about priorites.
-        - add a glossary to the dcoumentation.
+        - add documentation section about priorities.
+        - add a glossary to the documentation.
         - extend the ev_fork description slightly.
         - optimize a jump out of call_pending.
 

LICENSE

@@ -1,4 +1,5 @@
-All files in libev are Copyright (C)2007,2008,2009 Marc Alexander Lehmann.
+All files in libev are
+Copyright (c)2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are

Makefile.am

@@ -5,7 +5,7 @@ VERSION_INFO = 4:0:0
 EXTRA_DIST = LICENSE Changes libev.m4 autogen.sh \
 	     ev_vars.h ev_wrap.h \
 	     ev_epoll.c ev_select.c ev_poll.c ev_kqueue.c ev_port.c ev_win32.c \
-	     ev.3 ev.pod
+	     ev.3 ev.pod Symbols.ev Symbols.event
 
 man_MANS = ev.3
 
@@ -16,3 +16,5 @@ lib_LTLIBRARIES = libev.la
 libev_la_SOURCES = ev.c event.c
 libev_la_LDFLAGS = -version-info $(VERSION_INFO)
 
+ev.3: ev.pod
+	pod2man -n LIBEV -r "libev-$(VERSION)" -c "libev - high performance full featured event loop" -s3 <$< >$@