ChangeLog

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