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Tweak changelog for 2.1 even more
This commit is contained in:
Nick Mathewson
parent
7c15a93f86
commit
107272b681
136
ChangeLog-2.1
136
ChangeLog-2.1
@ -1,8 +1,7 @@
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Contains stuff through 3e9612cd81c8a9881ef298fa59c40af343e4f126
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Performance:
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Performance: Core
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o Replace several TAILQ users with LIST. LIST can be a little faster than
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TAILQ for cases where we don't need queue-like behavior. (f9db33d,
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6494772, d313c29, 974d004)
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@ -12,72 +11,81 @@ Contains stuff through 3e9612cd81c8a9881ef298fa59c40af343e4f126
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o possible optimization: split event_queue_insert/remove into separate functions. needs testing (efc4dc5)
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o Make event_count maintainance branchless at the expense of an extra shift. Needs benchmarking (d1cee3b)
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o In the 2.1 branch, let's try out lazy gettimeofday/clock_gettime comparison (2a83ecc)
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o Optimization in event_process_active(): ignore maxcb & endtime for highest priority events. (a9866aa Alexander Drozdov)
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o Bypass event_add when using event_base_once() for a 0-sec timeout (35c5c95)
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o Remove the eventqueue list and the ev_next pointers. (604569b 066775e)
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Performance: Evbuffers
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o Roughly 20% speed increase when line-draining a buffer using EVBUFFER_EOL_CRLF (5dde0f0 Mina Naguib)
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o Try to squeeze a little more speed out of EVBUFFER_EOL_CRLF (7b9d139)
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o Fix a bug in the improved EOL_CRLF code (d927965)
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o Remove a needless branch in evbuffer_drain() (d19a326)
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o Optimization in event_process_active(): ignore maxcb & endtime for highest priority events. (a9866aa Alexander Drozdov)
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o Bypass event_add when using event_base_once() for a 0-sec timeout (35c5c95)
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Performance: Linux
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o Infrastructure for using faster/fewer syscalls when creating sockets (a1c042b)
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o Minimize syscalls during socket creation in listener.c (7e9e289)
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o The LEV_OPT_CLOSE_ON_EXEC flag now applies to accepted listener sockets too (4970329)
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o Use a wrapper function to create the notification pipe/socketpair/eventfd (ca76cd9)
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o Use pipes for telling signals to main thread when possible (a35f396)
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o Save syscalls when constructing listener sockets for evhttp (af6c9d8)
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o Save some syscalls when creating evdns sockets (713e570)
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o Save some syscalls when constructing a socket for a bufferevent (33fca62)
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o Prefer epoll_create1 on Linuxen that have it (bac906c)
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o Fix compilation on osx (2b0a2c4)
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o Infrastructure for using faster/fewer syscalls when creating sockets (a1c042b)
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o Minimize syscalls during socket creation in listener.c (7e9e289)
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o The LEV_OPT_CLOSE_ON_EXEC flag now applies to accepted listener sockets too (4970329)
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o Use a wrapper function to create the notification pipe/socketpair/eventfd (ca76cd9)
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o Use pipes for telling signals to main thread when possible (a35f396)
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o Save syscalls when constructing listener sockets for evhttp (af6c9d8)
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o Save some syscalls when creating evdns sockets (713e570)
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o Save some syscalls when constructing a socket for a bufferevent (33fca62)
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o Prefer epoll_create1 on Linuxen that have it (bac906c)
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o Fix compilation on osx (2b0a2c4)
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o If open(O_CLOEXEC) fails, fall back to fcntl(CLOEXEC) (2ed4430)
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o Support TCP_DEFER_ACCEPT sockopts for listeners (5880e4a Mark Ellzey)
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o Add another caveat to the TCP_DEFER_ACCEPT documentation (a270728)
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Epoll backend:
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Performance: Epoll backend
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o Use current event set rather than current pending change when deciding whether to no-op a del (04ba27e Mike Smellie)
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o Replace big chain of if/thens in epoll.c with a table lookup (8c83eb6)
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o Clean up error handling in epoll_apply_one_change() a little (2d55a19)
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Windows:
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Performance: Evport backend
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o evport: use evmap_io to track fdinfo status. Should save time and RAM. (4687ce4)
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o evport: Remove a linear search over recent events when reactivating them (0f77efe)
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o evport: Use portev_user to remember fdinfo struct (276ec0e)
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o evport: don't scan more events in ed_pending than needed (849a5cf)
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o evport: Remove artificial low limit on max events per getn call (c04d927)
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o Reenable main/many_events_slow_add for evport in 2.1 (e903db3)
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Performance: Windows
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o Use GetSystemTimeAsFileTime to implement gettimeofday on win32. It's faster and more accurate than our old approach. (b8b8aa5)
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New functions and features:
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New functions and features: debugging
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o Add event_enable_debug_logging() to control use of debug logs (e30a82f)
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New functions and features: core
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o Add event_config function to limit time/callbacks between calls to dispatch (fd4de1e, 9fa56bd, a37a0c0, 3c63edd)
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o New EVLOOP_NO_EXIT_ON_EMPTY option to keep looping even when no events are pending (084e68f)
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o Add event_base_get_npriorities() function. (ee3a4ee Alexander Drozdov)
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o Make evbase_priority_init() and evbase_get_npriorities() threadsafe (3c55b5e) o New event_base_update_cache_time() to set cached_tv to current time (212533e Abel Mathew)
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o Add event_self_cbarg() to be used in conjunction with event_new(). (ed36e6a Ross Lagerwall, fa931bb, 09a1906, 1338e6c, 33e43ef)
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o Add a new libevent_global_shutdown() to free all globals before exiting. (041ca00 Mark Ellzey)
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o Use getifaddrs to detect our interfaces if possible (7085a45)
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o Fix compilation of windows evutil_check_ifaddrs (40a3c52)
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New functions and features: building
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o Implement --enable-gcc-hardening configure option (7550267 Sebastian Hahn)
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New functions and features: evbuffers
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o Add evbuffer_add_file_segment() so one fd can be used efficiently in more than one evbuffer_add_file at a time (e72afae, c2d9884, 3f405d2, 0aad014)
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o Fix windows file segment mappings (8254de7)
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o Allow evbuffer_ptr_set to yield a point just after the end of the buffer. (e6fe1da)
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o Allow evbuffer_ptr to point to position 0 in an empty evbuffer (7aeb2fd Nir Soffer)
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o Set the special "not found" evbuffer_ptr consistantly. (e3e97ae Nir Soffer)
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o support adding buffers to other buffers non-destructively (9d7368a Joachim Bauch)
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o prevent nested multicast references, reworked locking (26041a8 Joachim Bauch)
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o Add event_config function to limit time/callbacks between calls to dispatch (fd4de1e)
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o Make sure max_dispatch_callbacks is never negative (9fa56bd)
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o Make max_dispatch_interval able to apply only to low-priority events (a37a0c0)
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o Make the priority inversion code use gettime(), not evutil_gettimeofday() (3c63edd)
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o Build with large-file support on platforms where it matters (8a23104)
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o Implement --enable-gcc-hardening configure option (7550267 Sebastian Hahn)
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o Allow evconnlistener to be created in disabled state. (9593a33 Alexander Drozdov)
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o New EVLOOP_NO_EXIT_ON_EMPTY option to keep looping even when no events are pending (084e68f)
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o prevent nested multicast references, reworked locking (26041a8 Joachim Bauch) o New EVBUFFER_EOL_NUL to read NUL-terminated strings from an evbuffer (d7a8b36 Andrea Montefusco, 54142c9)
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o Make evbuffer_file_segment_types adaptable (c6bbbf1)
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o Add event_base_get_npriorities() function. (ee3a4ee Alexander Drozdov)
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o Make evbase_priority_init() and evbase_get_npriorities() threadsafe (3c55b5e)
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o bufferevent: Add functions to set/get max_single_read/write values. (998c813 Alexander Drozdov)
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o New event_base_update_cache_time() to set cached_tv to current time (212533e Abel Mathew)
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o Added evbuffer_add_iovec and unit tests. (aaec5ac Mark Ellzey, 27b5398)
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o Add evbuffer_copyout_from to copy data from the middle of a buffer (27e2225)
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o Use getifaddrs to detect our interfaces if possible (7085a45)
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o Fix compilation of windows evutil_check_ifaddrs (40a3c52)
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o Add a bufferevent_getcb() to find a bufferevent's current callbacks (a650394)
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New functions and features: bufferevents
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o Allow users to set allow_dirty_shutdown (099d27d Catalin Patulea)
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o Tweak allow_dirty_shutdown documentation (a44cd2b)
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o Fix two issues in the allow_dirty_shutdown code. (f3b89de)
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o Add a bufferevent_getcb() to find a bufferevent's current callbacks (a650394) o bufferevent: Add functions to set/get max_single_read/write values. (998c813 Alexander Drozdov)
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o bev_ssl: Be more specific in event callbacks. evhttp in particular gets confused without at least one of BEV_EVENT_{READING|WRITING}. (f7eb69a Catalin Patulea)
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New functions and features: evconnlisteners
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o Support TCP_DEFER_ACCEPT sockopts for listeners (5880e4a Mark Ellzey, a270728)
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o Add another caveat to the TCP_DEFER_ACCEPT documentation (a270728)
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o Allow evconnlistener to be created in disabled state. (9593a33 Alexander Drozdov)
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o The LEV_OPT_CLOSE_ON_EXEC flag now applies to accepted listener sockets too (4970329)
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Evhttp:
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o Add new evhttp_{connection_}set_timeout_tv() functions to set finger-grained http timeouts (6350e6c Constantine Verutin)
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@ -87,10 +95,6 @@ Contains stuff through 3e9612cd81c8a9881ef298fa59c40af343e4f126
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o Remove calls to deprecated bufferevent functions from evhttp.c (4d63758)
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o evhttp: Add evhttp_foreach_bound_socket. (a2c48e3 Samy Al Bahra)
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Bufferevents:
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o bev_ssl: Be more specific in event callbacks. evhttp in particular gets confused without at least one of BEV_EVENT_{READING|WRITING}. (f7eb69a Catalin Patulea)
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Build improvements
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o Add AC_USE_SYSTEM_EXTENSIONS to configure.in. Requires follow on patches for correctness and robustness. (1fa7dbe Kevin Bowling)
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o Filter '# define' statements from autoconf and generate event-private.h (321b558 Kevin Bowling)
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@ -132,57 +136,35 @@ f)
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o Make --enable-verbose-debug option match its help text (10c3450)
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o Add argument checks to some memory functions in `event.c'. (c8953d1 Mansour Moufid)
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Evport backend:
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o evport: use evmap_io to track fdinfo status. Should save time and RAM. (4687ce4)
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o evport: Remove a linear search over recent events when reactivating them (0f77efe)
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o evport: Use portev_user to remember fdinfo struct (276ec0e)
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o evport: don't scan more events in ed_pending than needed (849a5cf)
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o evport: Remove artificial low limit on max events per getn call (c04d927)
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o Reenable main/many_events_slow_add for evport in 2.1 (e903db3)
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Huh what:
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o Allow base-notification functions to exist without setting an fd (94b8e67)
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o Use the free-trailing-chains function in evbuffer_insert_chain too (b18c04d)
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o Allow users to set allow_dirty_shutdown (099d27d Catalin Patulea)
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o Tweak allow_dirty_shutdown documentation (a44cd2b)
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o Fix two issues in the allow_dirty_shutdown code. (f3b89de)
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o Changed use of refcounts to make sure referenced chains are freed in all cases. (a8e5e2f Joachim Bauch)
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o fix windows compilation issues with new file segment code (da45aa7)
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Testing:
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o More abstraction in test.sh (cd74c4e)
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o Add failing test for evbuffer_search_range. (8e26154 Nir Soffer)
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o Tweaks to return types with end-of-buf ptrs (9ab8ab8)
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o New EVBUFFER_EOL_NUL to read NUL-terminated strings from an evbuffer (d7a8b36 Andrea Montefusco, 54142c9)
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o Add an (internal) usleep function for use by unit tests (f25d9d3)
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o Synchronize with upstream tinytest (6c81be7)
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o Make test-changelist faster (7622d26)
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Documentation:
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o Improve evbuffer_ptr documentation (261ba63)
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o added comments to describe refcounting of multicase chains (ba24f61 Joachim Bauch)
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o Reduce the timeout in the main/fork test. (ab14f7c)
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o New evhttp function to adjust initial retry timeout (350a3c4)
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o Make regression tests run over 3x faster. (67a1763)
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o Use test_timeval_diff_eq more consistently (b77b43f)
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o Allow more slop in deferred_cb_skew test; freebsd needs it (b9f7e5f)
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o When including an -internal.h header outside the main tree, do so early (95e2455)
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o Add a new test: test-fdleak which tests for fd leaks by creating many sockets. (2ef9278 Ross Lagerwall, f7af194, 1c4288f 4293a80, c9ba53a 077c7e9 d9be5f4 d7d9f75)
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Documentation:
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o Improve evbuffer_ptr documentation (261ba63)
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o added comments to describe refcounting of multicase chains (ba24f61 Joachim Bauch)
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o Add doxygen for event_base_dump_events (cad5753)
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OSX:
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o Use "unlimited select" on OSX so that we can have more than FD_SETSIZE fds (1fb5cc6)
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KQueue:
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o Use SIG_IGN instead of a do-nothing handler for signal events with kqueue (148458e Zack Weinberg)
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evprc:
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o event_rpcgen.py now prints status information to stdout and errors to stderr. (ffb0ba0 Ross Lagerwall)
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Code improvement and refactoring:
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o Make event_reinit() more robust and maintainable (272033e)
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o Restore fast-path event_reinit() for slower backends (2c4b5de)
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@ -195,16 +177,6 @@ f)
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Build fixes:
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o Don't do clang version detection when disabling some flags (083296b Sebastian Hahn)
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======
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Performance:
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o Remove the eventqueue list and the ev_next pointers. (604569b 066775e)
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Documentation:
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o Add doxygen for event_base_dump_events (cad5753)
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Testing:
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o Add a new test: test-fdleak which tests for fd leaks by creating many sockets. (2ef9278 Ross Lagerwall, f7af194, 1c4288f 4293a80, c9ba53a 077c7e9 d9be5f4 d7d9f75)
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C standards conformance:
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o Check for NULL return on win32 mm_calloc, and set ENOMEM. (af7ba69)
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o Convert event-config.h macros to avoid reserved identifiers (68120d9)
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@ -230,8 +202,4 @@ Sample Code:
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o Rename event-test.c to event-read-fifo.c. (a5b370a Ross Lagerwall)
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o event-read-fifo: Use EV_PERSIST appropriately (24dab0b)
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Features:
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o Add event_self_cbarg() to be used in conjunction with event_new(). (ed36e6a Ross Lagerwall, fa931bb, 09a1906, 1338e6c, 33e43ef)
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o Add a new libevent_global_shutdown() to free all globals before exiting. (041ca00 Mark Ellzey)
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==============================
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