[ViewVC] Annotation of: cvs/IO-AIO/Changes

Revision history for IO::AIO

TODO: better autoconf.pm that can return LIBS etc.
TODO: aio_cptree/mvtree
TODO: aio_utime, aio_chmod, aio_chown? should simply stat/open first?
TODO: reduce condvar fairness: schedule hot-cache-threads first?
TODO: fix setsig

2.4
        - shared code between BDB and IO::AIO.
        - fix aio_busy w.r.t. fractional delays.
        - add aio_chmod, aio_chown, aio_utime.
        - correctly set errno to ENOSYS on unimplemented functions
          (should never happen, though).

2.33 Tue Jan 23 23:55:41 CET 2007
        - fix install path (Andreas J. Koenig).

2.32 Mon Jan 22 16:56:23 CET 2007
        - added aio_rmtree.
        - wow, aio_mkdir was missing.
        - aio_load did return undef on error, not -1.
        - use prefixexp not prefix in autoconf.pm
          (suggested by ... rt.cpan.org unreachable).
        - avoid installing autoconf.pm.

2.31 Sat Jan  6 03:46:02 CET 2007
        - added aio_load.

2.3  Sat Dec 23 05:48:07 CET 2006
        - fix off-by-one bug in aio_read, causing memory corruption
          or crashes.

2.21  Fri Dec 22 05:03:38 CET 2006
        - minor doc updates.
        - minor cleanups.
        - IO::AIO::poll returns request count.
        - undocumented and unfinished async-signal-reporting.

2.2  Tue Oct 31 00:31:00 CET 2006
        - minor doc updates.
        - added aio_readlink.
        - properly zero-terminate aio_read buffer.
        - fix aio_read/write with nonzero dataoffset.
        - reduced size of aio request structure.
        - better diagnostics when pathnames etc. are not byte-encoded;
          do not leak request in that case, either.

2.1  Sun Oct 29 02:01:57 CET 2006
        - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
          IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
        - fix a bug in aio_move where it would fail everytime
          it would have to copy files manually.
        - doc updates.
        - start threads only on (very low) demand.
        - end superfluous threads automatically after 10s idling.
        - add IO::AIO::max_idle to control this.
        - some tuning applied to random places.
        - add aio_mknod.

2.0  Thu Oct 26 18:27:58 CEST 2006
        - minor incompatibility: max_outstanding semantics have changed.
        - major rewrite, consider all functionality EXPERIMENTAL.
        - aio requests can be cancelled.
        - callbacks can be (re-)set later.
        - aio requests can choose between 9 priorities.
        - add aio_group: aio requests can be grouped
          into composite requests.
        - generator interface for groups.
        - add IO::AIO::poll_some.
        - major documentation improvements.
        - very minor bugfixes.
        - add aio_nop for dummy requests.
        - add aio_busy mainly for benchmarking and debugging.
        - use "fast" mutexes on linux.
        - use dynamic (and larger) buffers instead of
          putting them onto the stack.
        - optimise x86 and amd64 a bit.
        - better error checking when ENOMEM.
        - hopefully fix mem and dirp leaks on fork.
        - warn about broken perl malloc.
        - compiles on cygwin (but pread is broken on cygwin
          which is not detected by autoconf, so you have to
          edit autoconf/config.h yourself to enable emulation).

1.8  Sat Jun 24 22:20:44 CEST 2006
        - add and/or document aio_rename, aio_link, aio_symlink and aio_move.

1.73 Wed Mar  1 22:49:32 CET 2006
        - codename "jost"
        - AIX/Solaris(?) aren't being helpful again, hardcode a value
          for NAME_MAX and drive with your eyes closed (reported by
          wcooley@nakedape.cc).

1.72 Thu Feb  2 00:40:44 CET 2006
        - another minor bug in aio_scandir, again, the callback was called
          twice when the directory can't be stat'ed.

1.71 Mon Dec 26 20:20:03 CET 2005
        - grr, another minor bug in aio_scandir, this time resulting
          in a runtime error.

1.7  Mon Dec 26 19:29:48 CET 2005
        - aio_scandir errornously called callback twice in some cases.
        - added AnyEvent example.

1.61 Wed Sep  7 19:40:42 CEST 2005
        - no longer include $Config{libs}, as distros include too much
          garbage in there that is not installed on typical systems
          (for example, debian links perl against -lgdbm and many more
          libraries despite perl not needing it, slowing down startup and
          wasting memory).

1.6  Tue Aug 30 17:44:44 CEST 2005
        - added aio_readdir, aio_scandir.
        - added aio_sendfile, including sendfile emulation when sendfile
          isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
          support is unavailable on my solaris 8 machine, but preliminary
          code is there. What's lacking is configury stuff and testing...).

1.5  Sat Aug 20 02:32:19 CEST 2005
        - create the aio threads on demand only (good after forking).
        - somebody nagged about C89 compatibility, so this release should
          be C89 compatible, but no guarantees for future ones.
        - abort when the configure script fails.

1.4  Wed Aug 17 08:07:27 CEST 2005
        - forgot to recreate the pipe after forking, this could cause
          deadlocks.

1.3  Wed Aug 17 07:25:54 CEST 2005
        - properly propagate exceptions from callbacks, instead of silently
          eating them.
        - use a different fork algorithm that avoids recursive callback
          invocations and reduces fork latency in busy processes.
        - fix a bug where the buffer scalar in aio_read got assigned the wrong
          length after reading.
        - fix a bug where the child would process some outstanding requests
          from the parent.
        - make a copy of the callback scalar, to avoid some very uncommon
          (but valid) usages where the callback scalar changes.
        - the callback was never freed in aio_read/aio_write.
        - aio_read/aio_write will now set the readonly flag on the data
          scalar for better error reporting.

1.2  Wed Aug 17 01:22:58 CEST 2005
        - verified on cygwin, linux/amd64+ia32+alpha, solaris.
        - use SvPVbyte for filenames now. You *need* to encode your strings to
          the external filename encoding first.
        - fix the bug where filehandles could leak (again).
        - clarify freebsd situation: make it work and tell me how, or go away
          with your underdocumented, broken and outdated OS.
        - fork'ing should now be officially supported (where linux and
          posix contradict each other, I followed posix).
        - only call read() once per poll, not twice (speedup).
        - new functions: aio_rmdir, aio_symlink.
        - force callback arguments to be undef or a reference, for better
          error catching.

1.1  Sun Aug  7 05:27:23 CEST 2005
        - added configure script to detect availability of some calls.
          (imperfect, as we cannot detect things like -lrt due to missing
          feedback yet).
        - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
          and readahead via manual reading on platforms lacking those.
        - ported t/03_errors.t+framework by Brad Fitzpatrick
          from Linux::AIO.
        - removed XOPEN_SOURCE because stupid solaris 9 doesn't
          compile with it enabled. Probably breaks others. Oh well.
        - try to be more careful with errno on non-threaded perls.
        - cygwins perl insisted on a matching open mode when morphing
          the fd to an fh.
        - convert sv's to "byte" encoding in aio_read/aio_write. Might
          do that for pathnames, too, in the future, so make sure you
          properly encode your pathnames.

1.0  Fri Jul 22 10:43:30 CEST 2005
        - aio_open did not reliably deliver (open) filehandles.
        - all aio_*-functions keep a reference to the filehandle so
          it doesn't go away while the aio requests is working on it.
        - disable warnings in AIO.pm.

0.9  Wed Jul 20 23:55:04 CEST 2005
        - allow recursive calls to poll_cb, use less locking calls, too.
        - fix the Gtk2-example in the SYNOPSIS.
        - use pread/pwrite not pread64/pwrite64. this was simply a leftover
          from Linux::AIO.
          (found by compiling on cygwin. Unfortunately, cygwin declares but
          does not implement pread/pwrite).
        - only include <sys/syscall.h> on linux.

0.5  Tue Jul 12 13:03:09 CEST 2005
        - removed #include <endian.h>, it's not portable, and we don't
          need it anyway.
        - link against -lrt, as it might contain goodies such as fdatasync,
          and often aio_read, which we do not use yet, but it shouldn't hurt.

0.4  Mon Jul 11 05:28:25 CEST 2005
        - added IO::AIO::flush, IO::AIO::poll.
        - make callback argument optional for all calls.

0.3  Mon Jul 11 01:42:37 CEST 2005
        - restructured manpage.
        - added SYNOPSIS with examples for Event, Glib, Tk.
        - remove explicit context support so I don't have to maintain
          it for threaded perls (i.e. it should work now :).

0.2  Sun Jul 10 22:57:12 CEST 2005
        - return immediately from poll_wait if nreqs==0.
        - get rid of the request pipe and use faster thread-thread
          communications for most requests and responses.

0.1
        - cloned from Linux::AIO, which is very similar.

Revision:	1.121
Committed:	Fri Jun 1 05:51:21 2007 UTC (16 years, 11 months ago) by root
Branch:	MAIN
Changes since 1.120:	+5 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.31	Revision history for IO::AIO
2	root	1.30
3	root	1.59	TODO: better autoconf.pm that can return LIBS etc.
4	root	1.114	TODO: aio_cptree/mvtree
5	root	1.100	TODO: aio_utime, aio_chmod, aio_chown? should simply stat/open first?
6	root	1.106	TODO: reduce condvar fairness: schedule hot-cache-threads first?
7	root	1.109	TODO: fix setsig
8	root	1.100
9	root	1.121	2.4
10	root	1.120	- shared code between BDB and IO::AIO.
11	root	1.121	- fix aio_busy w.r.t. fractional delays.
12			- add aio_chmod, aio_chown, aio_utime.
13			- correctly set errno to ENOSYS on unimplemented functions
14			(should never happen, though).
15	root	1.120
16	root	1.119	2.33 Tue Jan 23 23:55:41 CET 2007
17			- fix install path (Andreas J. Koenig).
18
19	root	1.118	2.32 Mon Jan 22 16:56:23 CET 2007
20	root	1.114	- added aio_rmtree.
21	root	1.115	- wow, aio_mkdir was missing.
22	root	1.116	- aio_load did return undef on error, not -1.
23	root	1.117	- use prefixexp not prefix in autoconf.pm
24			(suggested by ... rt.cpan.org unreachable).
25	root	1.118	- avoid installing autoconf.pm.
26	root	1.114
27	root	1.113	2.31 Sat Jan 6 03:46:02 CET 2007
28	root	1.112	- added aio_load.
29
30	root	1.111	2.3 Sat Dec 23 05:48:07 CET 2006
31			- fix off-by-one bug in aio_read, causing memory corruption
32			or crashes.
33
34	root	1.110	2.21 Fri Dec 22 05:03:38 CET 2006
35	root	1.108	- minor doc updates.
36	root	1.107	- minor cleanups.
37			- IO::AIO::poll returns request count.
38	root	1.109	- undocumented and unfinished async-signal-reporting.
39	root	1.107
40	root	1.103	2.2 Tue Oct 31 00:31:00 CET 2006
41	root	1.100	- minor doc updates.
42	root	1.101	- added aio_readlink.
43			- properly zero-terminate aio_read buffer.
44			- fix aio_read/write with nonzero dataoffset.
45	root	1.104	- reduced size of aio request structure.
46	root	1.106	- better diagnostics when pathnames etc. are not byte-encoded;
47	root	1.105	do not leak request in that case, either.
48	root	1.94
49	root	1.99	2.1 Sun Oct 29 02:01:57 CET 2006
50	root	1.98	- INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
51			IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
52	root	1.95	- fix a bug in aio_move where it would fail everytime
53			it would have to copy files manually.
54	root	1.98	- doc updates.
55	root	1.94	- start threads only on (very low) demand.
56	root	1.97	- end superfluous threads automatically after 10s idling.
57	root	1.98	- add IO::AIO::max_idle to control this.
58	root	1.94	- some tuning applied to random places.
59	root	1.95	- add aio_mknod.
60	root	1.59
61	root	1.92	2.0 Thu Oct 26 18:27:58 CEST 2006
62	root	1.90	- minor incompatibility: max_outstanding semantics have changed.
63	root	1.86	- major rewrite, consider all functionality EXPERIMENTAL.
64	root	1.68	- aio requests can be cancelled.
65	root	1.81	- callbacks can be (re-)set later.
66	root	1.93	- aio requests can choose between 9 priorities.
67	root	1.83	- add aio_group: aio requests can be grouped
68			into composite requests.
69			- generator interface for groups.
70	root	1.89	- add IO::AIO::poll_some.
71	root	1.72	- major documentation improvements.
72			- very minor bugfixes.
73	root	1.76	- add aio_nop for dummy requests.
74	root	1.84	- add aio_busy mainly for benchmarking and debugging.
75	root	1.79	- use "fast" mutexes on linux.
76	root	1.80	- use dynamic (and larger) buffers instead of
77			putting them onto the stack.
78			- optimise x86 and amd64 a bit.
79			- better error checking when ENOMEM.
80	root	1.85	- hopefully fix mem and dirp leaks on fork.
81	root	1.92	- warn about broken perl malloc.
82	root	1.88	- compiles on cygwin (but pread is broken on cygwin
83			which is not detected by autoconf, so you have to
84			edit autoconf/config.h yourself to enable emulation).
85	root	1.68
86	root	1.67	1.8 Sat Jun 24 22:20:44 CEST 2006
87	root	1.66	- add and/or document aio_rename, aio_link, aio_symlink and aio_move.
88
89	root	1.65	1.73 Wed Mar 1 22:49:32 CET 2006
90			- codename "jost"
91			- AIX/Solaris(?) aren't being helpful again, hardcode a value
92			for NAME_MAX and drive with your eyes closed (reported by
93			wcooley@nakedape.cc).
94	root	1.63
95	root	1.62	1.72 Thu Feb 2 00:40:44 CET 2006
96	root	1.61	- another minor bug in aio_scandir, again, the callback was called
97			twice when the directory can't be stat'ed.
98
99	root	1.60	1.71 Mon Dec 26 20:20:03 CET 2005
100			- grr, another minor bug in aio_scandir, this time resulting
101			in a runtime error.
102
103	root	1.59	1.7 Mon Dec 26 19:29:48 CET 2005
104	root	1.58	- aio_scandir errornously called callback twice in some cases.
105	root	1.57	- added AnyEvent example.
106
107	root	1.55	1.61 Wed Sep 7 19:40:42 CEST 2005
108	root	1.54	- no longer include $Config{libs}, as distros include too much
109	root	1.56	garbage in there that is not installed on typical systems
110	root	1.54	(for example, debian links perl against -lgdbm and many more
111			libraries despite perl not needing it, slowing down startup and
112			wasting memory).
113
114	root	1.53	1.6 Tue Aug 30 17:44:44 CEST 2005
115			- added aio_readdir, aio_scandir.
116	root	1.51	- added aio_sendfile, including sendfile emulation when sendfile
117			isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
118			support is unavailable on my solaris 8 machine, but preliminary
119			code is there. What's lacking is configury stuff and testing...).
120	root	1.46
121	root	1.44	1.5 Sat Aug 20 02:32:19 CEST 2005
122	root	1.51	- create the aio threads on demand only (good after forking).
123	root	1.41	- somebody nagged about C89 compatibility, so this release should
124	root	1.42	be C89 compatible, but no guarantees for future ones.
125	root	1.43	- abort when the configure script fails.
126	root	1.41
127	root	1.40	1.4 Wed Aug 17 08:07:27 CEST 2005
128	root	1.93	- forgot to recreate the pipe after forking, this could cause
129	root	1.40	deadlocks.
130
131	root	1.39	1.3 Wed Aug 17 07:25:54 CEST 2005
132	root	1.33	- properly propagate exceptions from callbacks, instead of silently
133			eating them.
134	root	1.38	- use a different fork algorithm that avoids recursive callback
135			invocations and reduces fork latency in busy processes.
136	root	1.37	- fix a bug where the buffer scalar in aio_read got assigned the wrong
137			length after reading.
138			- fix a bug where the child would process some outstanding requests
139			from the parent.
140			- make a copy of the callback scalar, to avoid some very uncommon
141			(but valid) usages where the callback scalar changes.
142			- the callback was never freed in aio_read/aio_write.
143	root	1.38	- aio_read/aio_write will now set the readonly flag on the data
144			scalar for better error reporting.
145	root	1.33
146	root	1.32	1.2 Wed Aug 17 01:22:58 CEST 2005
147			- verified on cygwin, linux/amd64+ia32+alpha, solaris.
148	root	1.31	- use SvPVbyte for filenames now. You need to encode your strings to
149			the external filename encoding first.
150	root	1.32	- fix the bug where filehandles could leak (again).
151	root	1.31	- clarify freebsd situation: make it work and tell me how, or go away
152			with your underdocumented, broken and outdated OS.
153			- fork'ing should now be officially supported (where linux and
154			posix contradict each other, I followed posix).
155	root	1.32	- only call read() once per poll, not twice (speedup).
156			- new functions: aio_rmdir, aio_symlink.
157	root	1.31	- force callback arguments to be undef or a reference, for better
158			error catching.
159	root	1.1
160	root	1.29	1.1 Sun Aug 7 05:27:23 CEST 2005
161	root	1.25	- added configure script to detect availability of some calls.
162	root	1.27	(imperfect, as we cannot detect things like -lrt due to missing
163	root	1.23	feedback yet).
164	root	1.27	- emulate fdatasync via fsync, pread/pwrite via unsafe read/write
165			and readahead via manual reading on platforms lacking those.
166	root	1.19	- ported t/03_errors.t+framework by Brad Fitzpatrick
167			from Linux::AIO.
168	root	1.18	- removed XOPEN_SOURCE because stupid solaris 9 doesn't
169			compile with it enabled. Probably breaks others. Oh well.
170	root	1.24	- try to be more careful with errno on non-threaded perls.
171	root	1.26	- cygwins perl insisted on a matching open mode when morphing
172			the fd to an fh.
173	root	1.28	- convert sv's to "byte" encoding in aio_read/aio_write. Might
174			do that for pathnames, too, in the future, so make sure you
175			properly encode your pathnames.
176	root	1.18
177	root	1.17	1.0 Fri Jul 22 10:43:30 CEST 2005
178			- aio_open did not reliably deliver (open) filehandles.
179	root	1.16	- all aio_*-functions keep a reference to the filehandle so
180			it doesn't go away while the aio requests is working on it.
181			- disable warnings in AIO.pm.
182
183	root	1.15	0.9 Wed Jul 20 23:55:04 CEST 2005
184			- allow recursive calls to poll_cb, use less locking calls, too.
185			- fix the Gtk2-example in the SYNOPSIS.
186	root	1.14	- use pread/pwrite not pread64/pwrite64. this was simply a leftover
187			from Linux::AIO.
188			(found by compiling on cygwin. Unfortunately, cygwin declares but
189			does not implement pread/pwrite).
190			- only include <sys/syscall.h> on linux.
191
192	root	1.13	0.5 Tue Jul 12 13:03:09 CEST 2005
193	root	1.12	- removed #include <endian.h>, it's not portable, and we don't
194			need it anyway.
195			- link against -lrt, as it might contain goodies such as fdatasync,
196			and often aio_read, which we do not use yet, but it shouldn't hurt.
197
198	root	1.11	0.4 Mon Jul 11 05:28:25 CEST 2005
199	root	1.9	- added IO::AIO::flush, IO::AIO::poll.
200	root	1.10	- make callback argument optional for all calls.
201	root	1.8
202	root	1.7	0.3 Mon Jul 11 01:42:37 CEST 2005
203	root	1.5	- restructured manpage.
204	root	1.7	- added SYNOPSIS with examples for Event, Glib, Tk.
205			- remove explicit context support so I don't have to maintain
206			it for threaded perls (i.e. it should work now :).
207	root	1.5
208	root	1.4	0.2 Sun Jul 10 22:57:12 CEST 2005
209	root	1.2	- return immediately from poll_wait if nreqs==0.
210			- get rid of the request pipe and use faster thread-thread
211	root	1.3	communications for most requests and responses.
212	root	1.2
213	root	1.1	0.1
214			- cloned from Linux::AIO, which is very similar.
215