| 1 | Revision history for IO::AIO |
1 | Revision history for IO::AIO |
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2 | |
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3 | TODO: better autoconf.pm that can return LIBS etc. |
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4 | TODO: aio_cptree/mvtree |
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5 | TODO: reduce condvar fairness: schedule hot-cache-threads first? |
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6 | TODO: splice/tee/vmsplice/sync_file_range? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/) |
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7 | TODO: aio_fcntl, at least for file-locking |
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8 | |
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9 | 3.1 |
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10 | - pre-deref the passed callback object, for increased speed |
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11 | and decreased memory usage. |
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12 | - call on_next_submit callback even for aio_group - impact unknown, |
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13 | but seems more correct. |
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14 | - $req->cb now returns the original callback. |
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15 | - (libeio) pass EIO_GROUP/aio_group requests through the queue without |
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16 | requiring a thread switch. |
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17 | - do some other ยต-optimisations. |
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18 | |
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19 | 3.07 Sat Aug 2 16:06:13 CEST 2008 |
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20 | - do not include LIBS in autoconf tests. |
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21 | |
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22 | 3.06 Tue Jul 15 12:41:32 CEST 2008 |
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23 | - move preadwritelock definition before it's first reference, |
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24 | to make it compile again on broken platforms (they still exist) |
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25 | or badly cofngiured perls (redhat...), reported by Rob Bloodgood. |
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26 | |
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27 | 3.05 Thu Jun 19 23:23:52 CEST 2008 |
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28 | - work around perl overriding readdir etc. with thread-unsafe |
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29 | (sic!) versions. |
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30 | |
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31 | 3.04 Wed Jun 18 01:35:38 CEST 2008 |
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32 | - (libeio) fix eio_mknod, which confused it's arguments. |
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33 | - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this |
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34 | is stupid. |
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35 | - (libeio) fix eio__readahead prototype, patch by Jost Krieger. |
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36 | - (libeio) fix a bug that could potentially cause IO::AIO |
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37 | not to get initialised properly. |
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38 | |
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39 | 3.03 Thu May 29 05:33:30 CEST 2008 |
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40 | - (libeio) correctly call pthread_attr_destroy (). |
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41 | - (libeio) work around broken bsd headers once more. |
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42 | - reduce shared library size again by not including wrappers. |
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43 | - max_outstanding could cause poll to enter a busy-waiting loop. |
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44 | - document the new IO::AIO::poll_cb result value. |
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45 | |
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46 | 3.02 Mon May 12 02:32:02 CEST 2008 |
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47 | - fix a memory leak on aio_readlink. |
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48 | - bring back working fchmod. |
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49 | - nop and busy now set result to 0. |
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50 | - set errno to ENOMEM when allocation fails. |
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51 | |
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52 | 3.01 Sun May 11 03:07:03 CEST 2008 |
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53 | - (libeio) make it compile on systems without readahead or readdir_r. |
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54 | - (libeio) improve configure check for readahead availability. |
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55 | - do not try to link against -lrt. |
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56 | - use a separate configure script for IO::AIO (not the libeio one). |
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57 | |
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58 | 3.0 Sun May 11 00:57:14 CEST 2008 |
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59 | - added bin/treescan to the distribution. |
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60 | - switched to using libeio. |
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61 | - LOTS OF INCOMPATIBLE CHANGES: |
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62 | - remove signal functionality, it is not worth the effort. |
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63 | - max_outstanding no longer returns the previous number of requests. |
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64 | - poll_cb no longer returns number of requests. |
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65 | |
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66 | 2.62 Sat Apr 26 13:59:33 CEST 2008 |
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67 | - port to solaris perls configured for old posix |
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68 | (analysed by Jost Krieger). |
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69 | - keep a reference to the perl filehandle object in aio_close, |
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70 | so it doesn't get closed prematurely, leading to ugly races. |
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71 | |
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72 | 2.61 Wed Apr 16 18:45:02 CEST 2008 |
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73 | - fix treescan output duplication and improve output ordering. |
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74 | also display files given on the commandline. |
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75 | - use a different algorithm for aio_close that is faster |
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76 | and probably has even lower chances of blocking. |
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77 | - do our own stack memory management for threads - linux |
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78 | allocates outrageous amounts of VM (not so bad unless you |
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79 | use mlockall...), which severely limits the number of threads |
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80 | on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN |
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81 | and 4096 * sizeof (long) (usually this is 16..64k). |
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82 | |
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83 | 2.6 Sun Mar 30 08:28:11 CEST 2008 |
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84 | - added aio_sync. |
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85 | - added aio_pathsync. |
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86 | - fix prototypes of (void) functions. |
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87 | |
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88 | 2.51 Sat Oct 6 16:04:54 CEST 2007 |
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89 | - perlio isn't generally threadsafe, so aio_close could not work reliably. |
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90 | aio_close now tries a safe hack that might not be that asynchronous |
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91 | (see the manpage for details). |
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92 | - discard callback return values as to not grow the stack endlessly |
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93 | when poll_cb handles many requests without returning. |
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94 | - minor code cleanups. |
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95 | |
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96 | 2.5 Thu Oct 4 14:49:08 CEST 2007 |
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97 | - replaced _fd2fh with faster xs code. |
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98 | - aio_close will now try to do "the right thing" and thus might |
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99 | work sensibly for the very first time. |
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100 | |
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101 | 2.41 Mon Sep 24 21:28:21 CEST 2007 |
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102 | - after fork, invest some work to make sure that the poll_fileno |
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103 | stays stable (by dup2'ing the new fd over the old one), to make |
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104 | it easier for programs/libs that don't control their forking |
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105 | behaviour and cannot recreate their watchers. |
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106 | |
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107 | 2.4 Sun Aug 5 18:44:22 CEST 2007 |
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108 | - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux |
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109 | successfully demonstrated that you can block on futimes...). |
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110 | - allow undef as fileoffset for aio_read/write and use read/write(2) |
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111 | internally (useful for sockets or O_APPEND handles). |
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112 | - allow undef for length in aio_write. |
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113 | - negative dataoffsets work as expected now in aio_read/aio_write. |
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114 | - use NV instead of UV for 32 bit perls and file offsets, as NVs |
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115 | have a larger range then. |
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116 | - shared code between BDB and IO::AIO. |
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117 | - aio_busy was completely broken. now fixed. |
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118 | - readahead emulation now returns something. |
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119 | - correctly set errno to ENOSYS on unimplemented functions |
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120 | (should never happen, though). |
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121 | - large changes to make it partially compile and run on win32, |
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122 | but win32 lacks too much functionality, and perl overrides way |
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123 | too many functions with crashing versions. |
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124 | |
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125 | 2.33 Tue Jan 23 23:55:41 CET 2007 |
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126 | - fix install path (Andreas J. Koenig). |
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127 | |
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128 | 2.32 Mon Jan 22 16:56:23 CET 2007 |
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129 | - added aio_rmtree. |
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130 | - wow, aio_mkdir was missing. |
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131 | - aio_load did return undef on error, not -1. |
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132 | - use prefixexp not prefix in autoconf.pm |
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133 | (suggested by ... rt.cpan.org unreachable). |
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134 | - avoid installing autoconf.pm. |
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135 | |
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136 | 2.31 Sat Jan 6 03:46:02 CET 2007 |
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137 | - added aio_load. |
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138 | |
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139 | 2.3 Sat Dec 23 05:48:07 CET 2006 |
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140 | - fix off-by-one bug in aio_read, causing memory corruption |
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141 | or crashes. |
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142 | |
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143 | 2.21 Fri Dec 22 05:03:38 CET 2006 |
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144 | - minor doc updates. |
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145 | - minor cleanups. |
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146 | - IO::AIO::poll returns request count. |
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147 | - undocumented and unfinished async-signal-reporting. |
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148 | |
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149 | 2.2 Tue Oct 31 00:31:00 CET 2006 |
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150 | - minor doc updates. |
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151 | - added aio_readlink. |
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152 | - properly zero-terminate aio_read buffer. |
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153 | - fix aio_read/write with nonzero dataoffset. |
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154 | - reduced size of aio request structure. |
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155 | - better diagnostics when pathnames etc. are not byte-encoded; |
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156 | do not leak request in that case, either. |
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157 | |
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158 | 2.1 Sun Oct 29 02:01:57 CET 2006 |
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159 | - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by |
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160 | IO::AIO::max_poll_reqs and IO::AIO::max_poll_time. |
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161 | - fix a bug in aio_move where it would fail everytime |
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162 | it would have to copy files manually. |
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163 | - doc updates. |
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164 | - start threads only on (very low) demand. |
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165 | - end superfluous threads automatically after 10s idling. |
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166 | - add IO::AIO::max_idle to control this. |
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167 | - some tuning applied to random places. |
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168 | - add aio_mknod. |
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169 | |
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170 | 2.0 Thu Oct 26 18:27:58 CEST 2006 |
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171 | - minor incompatibility: max_outstanding semantics have changed. |
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172 | - major rewrite, consider all functionality EXPERIMENTAL. |
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173 | - aio requests can be cancelled. |
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174 | - callbacks can be (re-)set later. |
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175 | - aio requests can choose between 9 priorities. |
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176 | - add aio_group: aio requests can be grouped |
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177 | into composite requests. |
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178 | - generator interface for groups. |
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179 | - add IO::AIO::poll_some. |
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180 | - major documentation improvements. |
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181 | - very minor bugfixes. |
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182 | - add aio_nop for dummy requests. |
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183 | - add aio_busy mainly for benchmarking and debugging. |
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184 | - use "fast" mutexes on linux. |
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185 | - use dynamic (and larger) buffers instead of |
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186 | putting them onto the stack. |
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187 | - optimise x86 and amd64 a bit. |
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188 | - better error checking when ENOMEM. |
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189 | - hopefully fix mem and dirp leaks on fork. |
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190 | - warn about broken perl malloc. |
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191 | - compiles on cygwin (but pread is broken on cygwin |
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192 | which is not detected by autoconf, so you have to |
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193 | edit autoconf/config.h yourself to enable emulation). |
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194 | |
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195 | 1.8 Sat Jun 24 22:20:44 CEST 2006 |
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196 | - add and/or document aio_rename, aio_link, aio_symlink and aio_move. |
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197 | |
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198 | 1.73 Wed Mar 1 22:49:32 CET 2006 |
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199 | - codename "jost" |
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200 | - AIX/Solaris(?) aren't being helpful again, hardcode a value |
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201 | for NAME_MAX and drive with your eyes closed (reported by |
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202 | wcooley@nakedape.cc). |
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203 | |
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204 | 1.72 Thu Feb 2 00:40:44 CET 2006 |
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205 | - another minor bug in aio_scandir, again, the callback was called |
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206 | twice when the directory can't be stat'ed. |
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207 | |
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208 | 1.71 Mon Dec 26 20:20:03 CET 2005 |
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209 | - grr, another minor bug in aio_scandir, this time resulting |
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210 | in a runtime error. |
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211 | |
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212 | 1.7 Mon Dec 26 19:29:48 CET 2005 |
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213 | - aio_scandir errornously called callback twice in some cases. |
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214 | - added AnyEvent example. |
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215 | |
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216 | 1.61 Wed Sep 7 19:40:42 CEST 2005 |
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217 | - no longer include $Config{libs}, as distros include too much |
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218 | garbage in there that is not installed on typical systems |
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219 | (for example, debian links perl against -lgdbm and many more |
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220 | libraries despite perl not needing it, slowing down startup and |
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221 | wasting memory). |
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222 | |
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223 | 1.6 Tue Aug 30 17:44:44 CEST 2005 |
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224 | - added aio_readdir, aio_scandir. |
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225 | - added aio_sendfile, including sendfile emulation when sendfile |
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226 | isn't available. Linux, FreeBSD and HP-UX might work (sendfilev |
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227 | support is unavailable on my solaris 8 machine, but preliminary |
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228 | code is there. What's lacking is configury stuff and testing...). |
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229 | |
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230 | 1.5 Sat Aug 20 02:32:19 CEST 2005 |
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231 | - create the aio threads on demand only (good after forking). |
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232 | - somebody nagged about C89 compatibility, so this release should |
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233 | be C89 compatible, but no guarantees for future ones. |
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234 | - abort when the configure script fails. |
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235 | |
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236 | 1.4 Wed Aug 17 08:07:27 CEST 2005 |
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237 | - forgot to recreate the pipe after forking, this could cause |
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238 | deadlocks. |
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239 | |
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240 | 1.3 Wed Aug 17 07:25:54 CEST 2005 |
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241 | - properly propagate exceptions from callbacks, instead of silently |
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242 | eating them. |
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243 | - use a different fork algorithm that avoids recursive callback |
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244 | invocations and reduces fork latency in busy processes. |
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245 | - fix a bug where the buffer scalar in aio_read got assigned the wrong |
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246 | length after reading. |
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247 | - fix a bug where the child would process some outstanding requests |
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248 | from the parent. |
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249 | - make a copy of the callback scalar, to avoid some very uncommon |
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250 | (but valid) usages where the callback scalar changes. |
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251 | - the callback was never freed in aio_read/aio_write. |
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252 | - aio_read/aio_write will now set the readonly flag on the data |
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253 | scalar for better error reporting. |
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254 | |
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255 | 1.2 Wed Aug 17 01:22:58 CEST 2005 |
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256 | - verified on cygwin, linux/amd64+ia32+alpha, solaris. |
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257 | - use SvPVbyte for filenames now. You *need* to encode your strings to |
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258 | the external filename encoding first. |
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259 | - fix the bug where filehandles could leak (again). |
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260 | - clarify freebsd situation: make it work and tell me how, or go away |
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261 | with your underdocumented, broken and outdated OS. |
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262 | - fork'ing should now be officially supported (where linux and |
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263 | posix contradict each other, I followed posix). |
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264 | - only call read() once per poll, not twice (speedup). |
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265 | - new functions: aio_rmdir, aio_symlink. |
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266 | - force callback arguments to be undef or a reference, for better |
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267 | error catching. |
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268 | |
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269 | 1.1 Sun Aug 7 05:27:23 CEST 2005 |
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270 | - added configure script to detect availability of some calls. |
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271 | (imperfect, as we cannot detect things like -lrt due to missing |
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272 | feedback yet). |
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273 | - emulate fdatasync via fsync, pread/pwrite via unsafe read/write |
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274 | and readahead via manual reading on platforms lacking those. |
| 3 | - ported t/03_errors.t+framework by Brad Fitzpatrick |
275 | - ported t/03_errors.t+framework by Brad Fitzpatrick |
| 4 | from Linux::AIO. |
276 | from Linux::AIO. |
| 5 | - removed XOPEN_SOURCE because stupid solaris 9 doesn't |
277 | - removed XOPEN_SOURCE because stupid solaris 9 doesn't |
| 6 | compile with it enabled. Probably breaks others. Oh well. |
278 | compile with it enabled. Probably breaks others. Oh well. |
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279 | - try to be more careful with errno on non-threaded perls. |
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280 | - cygwins perl insisted on a matching open mode when morphing |
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281 | the fd to an fh. |
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282 | - convert sv's to "byte" encoding in aio_read/aio_write. Might |
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283 | do that for pathnames, too, in the future, so make sure you |
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284 | properly encode your pathnames. |
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285 | |
| 8 | 1.0 Fri Jul 22 10:43:30 CEST 2005 |
286 | 1.0 Fri Jul 22 10:43:30 CEST 2005 |
| 9 | - aio_open did not reliably deliver (open) filehandles. |
287 | - aio_open did not reliably deliver (open) filehandles. |
| 10 | - all aio_*-functions keep a reference to the filehandle so |
288 | - all aio_*-functions keep a reference to the filehandle so |
| 11 | it doesn't go away while the aio requests is working on it. |
289 | it doesn't go away while the aio requests is working on it. |
