From 40c6405cbbec20d99cd2d6cda5807c94a44afef0 Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Sun, 27 Feb 2011 13:11:47 +0100
Subject: [PATCH] Preliminary release notes for LibUCW 4.1

---
 ucw/doc/Makefile     |  2 +-
 ucw/doc/index.txt    |  2 ++
 ucw/doc/relnotes.txt | 47 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 ucw/doc/relnotes.txt

diff --git a/ucw/doc/Makefile b/ucw/doc/Makefile
index 6ffeb123..0ceb39ca 100644
--- a/ucw/doc/Makefile
+++ b/ucw/doc/Makefile
@@ -2,7 +2,7 @@
 
 DIRS+=ucw/doc
 
-UCW_DOCS=basics log fastbuf index config configure install basecode hash docsys conf mempool eltpool mainloop generic growbuf unaligned lists chartype unicode prime binsearch heap binheap compress sort hashtable
+UCW_DOCS=basics log fastbuf index config configure install basecode hash docsys conf mempool eltpool mainloop generic growbuf unaligned lists chartype unicode prime binsearch heap binheap compress sort hashtable relnotes
 UCW_INDEX=$(o)/ucw/doc/def_index.html
 UCW_DOCS_HTML=$(addprefix $(o)/ucw/doc/,$(addsuffix .html,$(UCW_DOCS)))
 
diff --git a/ucw/doc/index.txt b/ucw/doc/index.txt
index 00935c3e..a9981c5f 100644
--- a/ucw/doc/index.txt
+++ b/ucw/doc/index.txt
@@ -42,6 +42,7 @@ Other features
 - <<config:,Configuration file syntax>>
 - <<docsys:,Documentation system>>
 - <<generic:,Macro-generated generics>>
+- <<relnotes:,Release notes>>
 
 Yet undocumented modules
 ------------------------
@@ -60,6 +61,7 @@ Yet undocumented modules
   * `stkstring.h`
   * `string.h`
   * `str-match.h`
+  * `strtonum.h`
   * `wildmatch.h`
 - File manipulation
   * `asio.h`
diff --git a/ucw/doc/relnotes.txt b/ucw/doc/relnotes.txt
new file mode 100644
index 00000000..437ed5bb
--- /dev/null
+++ b/ucw/doc/relnotes.txt
@@ -0,0 +1,47 @@
+Release notes
+=============
+
+4.1 (work in progress)
+----------------------
+
+* The mainloop module has been rewritten:
+** Multiple instances of the main loop are supported (to be used in different
+   threads or locally within a library function).
+** The new implementation is more efficient: it uses heaps for timers,
+   epoll() for file descriptors (when available).
+** The return value of <<mainloop:struct_main_file,`main_file`>> handlers has been
+   changed to <<mainloop:enum_main_hook_return,`HOOK_IDLE`>> and <<mainloop:enum_main_hook_return,`HOOK_RETRY`>>.
+   However, the numerical values are equal, so old code should keep working.
+** *Incompatible:* The global variables `main_now`, `main_now_seconds`,
+   and `main_idle_time` are no longer available. They have become fields
+   in the `main_context` structure, which can be accessed either directly
+   or via helper functions like <<mainloop:fun_main_get_now,`main_get_now()`>>.
+** *Incompatible:* The interface for asynchronous reading and writing
+   (file_read() and friends) has been separated from the core of the main loop.
+   Use <<mainloop:struct_main_block_io,`struct main_block_io`>> and related functions instead.
+** *Incompatible:* file_close_all() is gone. You have to call <<mainloop:fun_main_teardown,`main_teardown()`>>
+   or <<mainloop:fun_main_destroy,`main_destroy()`>> to clean up properly after fork().
+** Added support for <<mainloop:signal,synchronous delivery of signals>>.
+** Added relative timers: <<mainloop:fun_timer_add_rel,`timer_add_rel()`>>.
+** Modification of events from a running event handler should be always safe.
+
+* Added a growing array module `gary.h`, similar to `gbuf.h`, but with
+  a much more convenient interface.
+
+* The <<lists:,Circular linked lists>> can recognize unlinked nodes,
+  see <<lists:fun_clist_unlink,`clist_unlink()`>>.
+
+* Added `strtonum.h` -- a module for precise parsing of numbers.
+
+* When compiled by a recent enough GCC, `__thread` is used for thread-local variables,
+  which is more efficient than the POSIX per-thread storage.
+** *Incompatible:* `ucwlib_context->thread_id` is no longer available directly,
+  please use ucwlib_thread_id() instead.
+
+* `UCW::Configure` supports running of test programs.
+
+
+4.0 (2009-04-13)
+----------------
+This was the first stand-alone release of LibUCW. Before that, LibUCW was developed
+as a part of the http://www.ucw.cz/holmes/[Sherlock Holmes project].
-- 
2.39.2