b9f87080c08bc2ed96234d5847cc28244cb8006e
[urcu.git] / ChangeLog
1 2011-12-12 Userspace RCU 0.6.7
2 * Add compat file for test urcu wfs
3 * Add missing compat file for wfq test
4 * hlist.h: Add missing stddef.h include for NULL
5 * call_rcu: Add missing call_rcu_before_fork and
6 call_rcu_after_fork_parent declarations
7 * Describe autotools/libtool/automake version dependency
8 * Remove m4_ifdef for AC_PROG_LIBTOOL (deprecated)
9 * Support older autotools
10 * Apply autoupdate to configure.ac
11 * Fix build for amd64 environment (for FreeBSD 8.2)
12 * Add missing rcu_dereference_sym_bp
13 * Install test scripts in the dist tarball
14
15 2011-11-03 Userspace RCU 0.6.6
16 * qsbr vs call_rcu : remove exit assertion
17 * Rename likely/unlikely to caa_likely/caa_unlikely
18 * Reinsert missing test_urcu_*.c files (missing in rename)
19 * rename test_qsbr to test_urcu_qsbr
20 * urcu-pointer: fix rcu_set_pointer unset return value
21 * Enhance API.txt documentation, add to Makefile as EXTRA_DIST
22
23 2011-09-29 Userspace RCU 0.6.5
24 * call_rcu: Document call_rcu requirements
25 * call_rcu: fix error handling of malloc error
26 * urcu call_rcu: Use RCU read-side protection for per-cpu call_rcu data
27 * urcu,call_rcu: Cleanup call_rcu_data pointers before use in child
28 * urcu,call_rcu: avoid create call_rcu_data for child when unneed
29 * urcu,defer_rcu: Make defer_rcu encoding more compact for marker
30 * urcu_defer: Use cancellation flag instead of pthread_cancel()
31 * urcu,call_rcu: protects call_rcu_data_list when remove node
32 * Create default call rcu data upon per-cpu call-rcu teardown
33 * powerpc: use __NO_LWSYNC__ check to use appropriate lwsync/sync opcode
34 * cmm: provide lightweight smp_rmb/smp_wmb on PPC
35 * atomic: provide seq_cst semantics on powerpc
36 * avoid leaking crdp for failed path
37 * Return -EEXIST when the old cpu call_rcu_data has not been removed
38 * protect writing to per_cpu_call_rcu_data[*]
39 * wake up default call_rcu thread after we move the leftover callbacks
40 * avoid memory leak in call_rcu_data_free()
41 * urcu call_rcu: fix use after free()
42 * use get_cpu_call_rcu_data() for get_call_rcu_data()
43 * init maxcpus before use
44 * call_rcu implementation: add missing static
45 * Document QSBR interaction with mutexes
46 * urcu-pointer: implement URCU_FORCE_CAST for C++ compatibility of urcu-pointer.h
47 * urcu-qsbr: use rcu_thread_offline/rcu_thread_online instead of inlining them
48 * Pair all_cpu call_rcu create with free
49 * QSBR: add missing wakeups in synchronize_rcu code
50 * cmm: do not generate code for smp_rmb/smp_wmb on x86_64
51 * cmm: let per-arch files provide cmm_smp_* barriers
52 * Optimize caa_get_cycles() for PowerPC64
53 * lfq/lfs tests: use call_rcu
54 * list: Add cds_list_first_entry
55 * rculfstack/queue: define _LGPL_SOURCE around static header include
56 * Add __rcu annotation (unimplemented)
57 * Fix incorrect fsf address in header files
58 * wfstack: push returns prior stack emptiness state
59 * Make lf stack push return if the stack was empty
60 * Document caa_container_of
61 * urcu-bp: do not call munmap for NULL registry at exit
62 * urcu libraries can directly use the _LGPL_SOURCE wfqueue
63 * rculfstack: document "push"
64 * Add runall.sh to tarball
65 * Fix build order of liburcu-cds-common
66 * Fix missing check for SYS_membarrier in map header
67 * urcu-qsbr: avoid useless futex wakeups and burning CPU for long grace periods
68 * api: reimplement BUILD_BUG_ON in compiler.h
69 * test api cleanup: remove unused primitives
70 * put thread offline while waiting for the init flag
71 * urcu: move private definitions to .c file
72 * urcu-bp: move private definitions to .c file
73 * urcu-qsbr: move private definitions to .c file
74 * rcutorture: fix rcutorture-qsbr
75 * wfqueue: fix type-incorrect assignment
76 * Fix tests Makefile EXTRA_DIST to use api.h
77 * Fix choice of default flavour in urcu/map/urcu.h
78 * api: remove list/hlist
79 * api: remove arch-specific files
80 * api: make api_gcc.h a superset of the other headers
81 * tests api: remove atomics
82 * put thread offline while waiting for the init flag
83 * urcu: move private definitions to .c file
84 * urcu-bp: move private definitions to .c file
85 * urcu-qsbr: move private definitions to .c file
86 * rcutorture: fix rcutorture-qsbr
87 * wfqueue: fix type-incorrect assignment
88 * Use caa_ prefix for min() and max()
89
90 2011-07-21 Userspace RCU 0.6.4
91 * uatomic: Fix ARM build errors in uatomic.
92 * urcu tests: hold mutex across use of custom allocator.
93 * Portability fixes to support FreeBSD 8.2.
94
95 2011-06-27 Userspace RCU 0.6.3
96 * uatomic: Fix i386 compatibility build errors in uatomic.
97
98 2011-06-13 Userspace RCU 0.6.2
99 * Fix build on powerpc.
100
101 2011-06-13 Userspace RCU 0.6.1
102 * Add missing headers into release tarball:
103 urcu-call-rcu-impl.h and urcu-defer-impl.h
104
105 2011-06-10 Userspace RCU 0.6.0
106 * Added call_rcu() support, graciously contributed by Paul E. McKenney.
107 * Added urcu/cds.h and merged all "Concurrent Data Containers" (CDS)
108 into a single .so: liburcu-cds.so to have a single header/shared
109 object holding all concurrency-aware data containers. It provides
110 support for RCU lists, queues and stacks at the moment.
111 * liburcu 0.6.0 now allows linking a single application with multiple
112 flavors of RCU. This required a library API change which is
113 incompatible with older 0.5.x liburcu. The .so version number
114 is therefore bumped from 0 to 1 (e.g. liburcu.so.1).
115 * Added "atfork" handling API, documented in README. Only useful for
116 processes using fork() without following exec().
117 * Renaming the following files, keeping the old files (producing a
118 compiler warning):
119 urcu/uatomic_arch.h -> urcu/uatomic.h
120 urcu/urcu-futex.h -> urcu/futex.h
121 urcu/urcu_ref.h -> urcu/ref.h
122
123 2011-03-04 Userspace RCU 0.5.4
124 * urcu-bp: Update fork() handling
125
126 Introduce
127
128 extern void rcu_bp_before_fork(void);
129 extern void rcu_bp_after_fork_parent(void);
130 extern void rcu_bp_after_fork_child(void);
131
132 to handle fork gracefully. These disable signals and hold
133 the registry mutex across forks. (this flavor of the liburcu
134 library ("bp" for "bulletproof") is mainly used by UST, the
135 user-space tracer).
136
137 2011-03-03 Userspace RCU 0.5.3
138 * Add support for older ARM single-CPU architecturess (pre-ARMv7)
139 (thanks to Jason Wessel from WindRiver).
140 * Fix ARMv7 cmm_rmb/cmm_wmb primitives (use a dmb barrier).
141 * Remove leftover list_t type from urcu/list.h (namespace cleanup).
142 * urcu_defer: handle malloc error value.
143 * Update README file to describe urcu interaction with fork() when not
144 * followed
145 by an exec() system call.
146
147 2010-11-18 Userspace RCU 0.5.2
148 * Fix renaming error introduced in 0.5.0.
149
150 2010-11-18 Userspace RCU 0.5.1
151 * Fix renaming error introduced in 0.5.0. (incomplete fix)
152
153 2010-11-18 Userspace RCU 0.5.0
154 * Version 0.5.0 changes the API presented by memory model,
155 architecture abstraction and data structure primitives in
156 headers. The prefixes are, respectively:
157 - cmm_ : Concurrent Memory Model
158 - caa_ : Concurrent Architecture Abstraction
159 - cds_ : Concurrent Data Structures
160
161 2010-03-04 Userspace RCU 0.4.2
162 * Add generic uatomic ops support.
163 * Bugfix in urcu-bp. (rare garbage collection bug occurring in
164 multithreaded environment). Only affects urcu-bp users (UST).
165
166 2010-02-12 Userspace RCU 0.4.1
167 * s390: compilation fix.
168
169 2010-01-30 Userspace RCU 0.4.0
170 * API change: SIGURCU -> SIGRCU
171 * API changes: standardize on rcu_ prefix.
172 * API change: urcu_init -> rcu_init.
173 * urcu/config.h options renamed to CONFIG_RCU_HAVE_FENCE,
174 CONFIG_RCU_HAVE_FUTEX, CONFIG_RCU_SMP, CONFIG_RCU_COMPAT_ARCH.
175 ((moving from URCU -> RCU).
176 * library names changes: liburcu becomes the "default" version, using
177 sys_membarrier() when available, and using liburcu-mb as a
178 fallback.
179 * The signal-based liburcu is renamed from liburcu to
180 liburcu-signal. People previously using the signal-based
181 "liburcu" will automatically be moved to the "default" liburcu
182 version.
183
184 2009-11-16 Userspace RCU 0.3.1
185 * Add support for sparcv9 32-bit build.
186 * Update build system to use --host instead of --target.
187
188 2009-11-03 Userspace RCU 0.3.0
189 * API change for the "deferred work" interface.
190
191 2009-10-14 Userspace RCU 0.2.3
192 * Move to autotools.
193 * Automated architecture detection, with i386 fallback.
194 * Detect if NR_futex is on the system, fallback on portable
195 alternatives.
196 * Add configure mode for UP-only systems.
197
198 2009-10-02 Userspace RCU 0.2.2
199 * Phases out rcu_publish_content() api.
200 * Adds type checking to urcu-pointer.h pointer exchange primitives.
201
202 2009-10-02 Userspace RCU 0.2.1
203 * small header dependency fix for rculist.h.
204 * new "liburcu-bp.so" : "Bulletproof RCU", made especially for
205 the UST userspace tracer. It's a library that sacrifices a bit
206 of read-side performance for automatically monitoring thread
207 creation/removal. See README for details.
208
209 2009-10-01 Userspace RCU 0.2
210 * Clarify usage of rcu_cmpxchg_pointer, rcu_xchg_pointer,
211 rcu_set_pointer.
212
213 2009-09-29 Userspace RCU 0.1
214 * Initial release.
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