1 | Revision history for libev, a high-performance and full-featured event loop. |
1 | Revision history for libev, a high-performance and full-featured event loop. |
2 | |
2 | |
3 | TODO: ev_loop_wakeup |
3 | TODO: for next ABI/API change, consider moving EV__IOFDSSET into io->fd instead and provide a getter. |
4 | TODO: EV_STANDALONE == NO_HASSEL (do not use clock_gettime in ev_standalone) |
4 | TODO: document EV_TSTAMP_T |
5 | |
5 | |
6 | TODO: document WSA_EV_USE_SOCKET in win32 part |
6 | 4.33 Wed Mar 18 13:22:29 CET 2020 |
7 | TODO: ^ OR use WSASend/WSARecv on the handle, which always works |
7 | - no changes w.r.t. 4.32. |
8 | |
8 | |
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9 | 4.32 (EV only) |
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10 | - the 4.31 timerfd code wrongly changed the priority of the signal |
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11 | fd watcher, which is usually harmless unless signal fds are |
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12 | also used (found via cpan tester service). |
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13 | - the documentation wrongly claimed that user may modify fd and events |
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14 | members in io watchers when the watcher was stopped |
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15 | (found by b_jonas). |
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16 | - new ev_io_modify mutator which changes only the events member, |
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17 | which can be faster. also added ev::io::set (int events) method |
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18 | to ev++.h. |
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19 | - officially allow a zero events mask for io watchers. this should |
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20 | work with older libev versions as well but was not officially |
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21 | allowed before. |
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22 | - do not wake up every minute when timerfd is used to detect timejumps. |
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23 | - do not wake up every minute when periodics are disabled and we have |
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24 | a monotonic clock. |
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25 | - support a lot more "uncommon" compile time configurations, |
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26 | such as ev_embed enabled but ev_timer disabled. |
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27 | - use a start/stop wrapper class to reduce code duplication in |
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28 | ev++.h and make it needlessly more c++-y. |
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29 | - the linux aio backend is no longer compiled in by default. |
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30 | - update to libecb version 0x00010008. |
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31 | |
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32 | 4.31 Fri Dec 20 21:58:29 CET 2019 |
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33 | - handle backends with minimum wait time a bit better by not |
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34 | waiting in the presence of already-expired timers |
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35 | (behaviour reported by Felipe Gasper). |
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36 | - new feature: use timerfd to detect timejumps quickly, |
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37 | can be disabled with the new EVFLAG_NOTIMERFD loop flag. |
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38 | - document EV_USE_SIGNALFD feature macro. |
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39 | |
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40 | 4.30 (EV only) |
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41 | - change non-autoconf test for __kernel_rwf_t by testing |
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42 | LINUX_VERSION_CODE, the most direct test I could find. |
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43 | - fix a bug in the io_uring backend that polled the wrong |
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44 | backend fd, causing it to not work in many cases. |
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45 | |
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46 | 4.29 (EV only) |
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47 | - add io uring autoconf and non-autoconf detection. |
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48 | - disable io_uring when some header files are too old. |
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49 | |
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50 | 4.28 (EV only) |
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51 | - linuxaio backend resulted in random memory corruption |
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52 | when loop is forked. |
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53 | - linuxaio backend might have tried to cancel an iocb |
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54 | multiple times (was unable to trigger this). |
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55 | - linuxaio backend now employs a generation counter to |
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56 | avoid handling spurious events from cancelled requests. |
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57 | - io_cancel can return EINTR, deal with it. also, assume |
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58 | io_submit also returns EINTR. |
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59 | - fix some other minor bugs in linuxaio backend. |
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60 | - ev_tstamp type can now be overriden by defining EV_TSTAMP_T. |
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61 | - cleanup: replace expect_true/false and noinline by their |
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62 | libecb counterparts. |
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63 | - move syscall infrastructure from ev_linuxaio.c to ev.c. |
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64 | - prepare io_uring integration. |
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65 | - tweak ev_floor. |
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66 | - epoll, poll, win32 Sleep and other places that use millisecond |
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67 | reslution now all try to round up times. |
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68 | - solaris port backend didn't compile. |
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69 | - abstract time constants into their macros, for more flexibility. |
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70 | |
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71 | 4.27 Thu Jun 27 22:43:44 CEST 2019 |
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72 | - linux aio backend almost completely rewritten to work around its |
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73 | limitations. |
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74 | - linux aio backend now requires linux 4.19+. |
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75 | - epoll backend now mandatory for linux aio backend. |
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76 | - fail assertions more aggressively on invalid fd's detected |
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77 | in the event loop, do not just silently fd_kill in case of |
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78 | user error. |
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79 | - ev_io_start/ev_io_stop now verify the watcher fd using |
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80 | a syscall when EV_VERIFY is 2 or higher. |
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81 | |
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82 | 4.26 (EV only) |
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83 | - update to libecb 0x00010006. |
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84 | - new experimental linux aio backend (linux 4.18+). |
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85 | - removed redundant 0-ptr check in ev_once. |
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86 | - updated/extended ev_set_allocator documentation. |
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87 | - replaced EMPTY2 macro by array_needsize_noinit. |
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88 | - minor code cleanups. |
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89 | - epoll backend now uses epoll_create1 also after fork. |
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90 | |
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91 | 4.25 Fri Dec 21 07:49:20 CET 2018 |
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92 | - INCOMPATIBLE CHANGE: EV_THROW was renamed to EV_NOEXCEPT |
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93 | (EV_THROW still provided) and now uses noexcept on C++11 or newer. |
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94 | - move the darwin select workaround higher in ev.c, as newer versions of |
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95 | darwin managed to break their broken select even more. |
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96 | - ANDROID => __ANDROID__ (reported by enh@google.com). |
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97 | - disable epoll_create1 on android because it has broken header files |
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98 | and google is unwilling to fix them (reported by enh@google.com). |
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99 | - avoid a minor compilation warning on win32. |
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100 | - c++: remove deprecated dynamic throw() specifications. |
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101 | - c++: improve the (unsupported) bad_loop exception class. |
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102 | - backport perl ev_periodic example to C, untested. |
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103 | - update libecb, biggets change is to include a memory fence |
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104 | in ECB_MEMORY_FENCE_RELEASE on x86/amd64. |
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105 | - minor autoconf/automake modernisation. |
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106 | |
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107 | 4.24 Wed Dec 28 05:19:55 CET 2016 |
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108 | - bump version to 4.24, as the release tarball inexplicably |
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109 | didn't have the right version in ev.h, even though the cvs-tagged |
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110 | version did have the right one (reported by Ales Teska). |
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111 | |
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112 | 4.23 Wed Nov 16 18:23:41 CET 2016 |
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113 | - move some declarations at the beginning to help certain retarded |
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114 | microsoft compilers, even though their documentation claims |
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115 | otherwise (reported by Ruslan Osmanov). |
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116 | |
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117 | 4.22 Sun Dec 20 22:11:50 CET 2015 |
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118 | - when epoll detects unremovable fds in the fd set, rebuild |
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119 | only the epoll descriptor, not the signal pipe, to avoid |
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120 | SIGPIPE in ev_async_send. This doesn't solve it on fork, |
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121 | so document what needs to be done in ev_loop_fork |
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122 | (analyzed by Benjamin Mahler). |
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123 | - remove superfluous sys/timeb.h include on win32 |
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124 | (analyzed by Jason Madden). |
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125 | - updated libecb. |
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126 | |
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127 | 4.20 Sat Jun 20 13:01:43 CEST 2015 |
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128 | - prefer noexcept over throw () with C++ 11. |
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129 | - update ecb.h due to incompatibilities with c11. |
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130 | - fix a potential aliasing issue when reading and writing |
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131 | watcher callbacks. |
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132 | |
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133 | 4.19 Thu Sep 25 08:18:25 CEST 2014 |
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134 | - ev.h wasn't valid C++ anymore, which tripped compilers other than |
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135 | clang, msvc or gcc (analyzed by Raphael 'kena' Poss). Unfortunately, |
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136 | C++ doesn't support typedefs for function pointers fully, so the affected |
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137 | declarations have to spell out the types each time. |
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138 | - when not using autoconf, tighten the check for clock_gettime and related |
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139 | functionality. |
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140 | |
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141 | 4.18 Fri Sep 5 17:55:26 CEST 2014 |
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142 | - events on files were not always generated properly with the |
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143 | epoll backend (testcase by Assaf Inbal). |
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144 | - mark event pipe fd as cloexec after a fork (analyzed by Sami Farin). |
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145 | - (ecb) support m68k, m88k and sh (patch by Miod Vallat). |
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146 | - use a reasonable fallback for EV_NSIG instead of erroring out |
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147 | when we can't detect the signal set size. |
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148 | - in the absence of autoconf, do not use the clock syscall |
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149 | on glibc >= 2.17 (avoids the syscall AND -lrt on systems |
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150 | doing clock_gettime in userspace). |
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151 | - ensure extern "C" function pointers are used for externally-visible |
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152 | loop callbacks (not watcher callbacks yet). |
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153 | - (ecb) work around memory barriers and volatile apparently both being |
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154 | broken in visual studio 2008 and later (analysed and patch by Nicolas Noble). |
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155 | |
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156 | 4.15 Fri Mar 1 12:04:50 CET 2013 |
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157 | - destroying a non-default loop would stop the global waitpid |
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158 | watcher (Denis Bilenko). |
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159 | - queueing pending watchers of higher priority from a watcher now invokes |
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160 | them in a timely fashion (reported by Denis Bilenko). |
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161 | - add throw() to all libev functions that cannot throw exceptions, for |
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162 | further code size decrease when compiling for C++. |
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163 | - add throw () to callbacks that must not throw exceptions (allocator, |
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164 | syserr, loop acquire/release, periodic reschedule cbs). |
9 | - fix event_base_loop return code, add event_get_callback, event_base_new, |
165 | - fix event_base_loop return code, add event_get_callback, event_base_new, |
10 | event_base_get_method calls to improve libevent 1.x emulation and add |
166 | event_base_get_method calls to improve libevent 1.x emulation and add |
11 | some libevent 2.x funcitonality (based on a patch by Jeff Davey). |
167 | some libevent 2.x functionality (based on a patch by Jeff Davey). |
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168 | - add more memory fences to fix a bug reported by Jeff Davey. Better |
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169 | be overfenced than underprotected. |
12 | - ev_run now returns a boolean status (true meaning watchers are |
170 | - ev_run now returns a boolean status (true meaning watchers are |
13 | still active). |
171 | still active). |
14 | - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with |
172 | - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with |
15 | libev's EV_ERROR (reported by 191919). |
173 | libev's EV_ERROR (reported by 191919). |
16 | - (ecb) add memory fence support for xlC (Darin McBride). |
174 | - (ecb) add memory fence support for xlC (Darin McBride). |
17 | - (ecb) add memory fence support for gcc-mips (Anton Kirilov). |
175 | - (ecb) add memory fence support for gcc-mips (Anton Kirilov). |
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176 | - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber). |
18 | - work around some kernels losing file descriptors by leaking |
177 | - work around some kernels losing file descriptors by leaking |
19 | the kqueue descriptor in the child. |
178 | the kqueue descriptor in the child. |
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179 | - work around linux inotify not reporting IN_ATTRIB changes for directories |
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180 | in many cases. |
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181 | - include sys/syscall.h instead of plain syscall.h. |
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182 | - check for io watcher loops in ev_verify, check for the most |
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183 | common reported usage bug in ev_io_start. |
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184 | - choose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET. |
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185 | - always use WSASend/WSARecv directly on windows, hoping that this |
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186 | works in all cases (unlike read/write/send/recv...). |
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187 | - try to detect signals around a fork faster (test program by |
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188 | Denis Bilenko). |
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189 | - work around recent glibc versions that leak memory in realloc. |
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190 | - rename ev::embed::set to ev::embed::set_embed to avoid clashing |
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191 | the watcher base set (loop) method. |
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192 | - rewrite the async/signal pipe logic to always keep a valid fd, which |
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193 | simplifies (and hopefully correctifies :) the race checking |
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194 | on fork, at the cost of one extra fd. |
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195 | - add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of |
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196 | inotify-supporting filesystems. |
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197 | - move orig_CFLAGS assignment to after AC_INIT, as newer autoconf |
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198 | versions ignore it before |
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199 | (https://bugzilla.redhat.com/show_bug.cgi?id=908096). |
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200 | - add some untested android support. |
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201 | - enum expressions must be of type int (reported by Juan Pablo L). |
20 | |
202 | |
21 | 4.11 Sat Feb 4 19:52:39 CET 2012 |
203 | 4.11 Sat Feb 4 19:52:39 CET 2012 |
22 | - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as |
204 | - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as |
23 | was documented already, but not implemented in the repeating case. |
205 | was documented already, but not implemented in the repeating case. |
24 | - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS. |
206 | - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS. |
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208 | reinitialising the default loop actually works (patch by |
390 | reinitialising the default loop actually works (patch by |
209 | Malek Hadj-Ali). |
391 | Malek Hadj-Ali). |
210 | - implement ev_suspend and ev_resume. |
392 | - implement ev_suspend and ev_resume. |
211 | - new EV_CUSTOM revents flag for use by applications. |
393 | - new EV_CUSTOM revents flag for use by applications. |
212 | - add documentation section about priorities. |
394 | - add documentation section about priorities. |
213 | - add a glossary to the dcoumentation. |
395 | - add a glossary to the documentation. |
214 | - extend the ev_fork description slightly. |
396 | - extend the ev_fork description slightly. |
215 | - optimize a jump out of call_pending. |
397 | - optimize a jump out of call_pending. |
216 | |
398 | |
217 | 3.53 Sun Feb 15 02:38:20 CET 2009 |
399 | 3.53 Sun Feb 15 02:38:20 CET 2009 |
218 | - fix a bug in event pipe creation on win32 that would cause a |
400 | - fix a bug in event pipe creation on win32 that would cause a |