ChangeLog

   1 2011-06-27 Userspace RCU 0.6.3
   2         * uatomic: Fix i386 compatibility build errors in uatomic.
   3
   4 2011-06-13 Userspace RCU 0.6.2
   5         * Fix build on powerpc.
   6
   7 2011-06-13 Userspace RCU 0.6.1
   8         * Add missing headers into release tarball:
   9             urcu-call-rcu-impl.h and urcu-defer-impl.h
  10
  11 2011-06-10 Userspace RCU 0.6.0
  12         * Added call_rcu() support, graciously contributed by Paul E. McKenney.
  13         * Added urcu/cds.h and merged all "Concurrent Data Containers" (CDS)
  14           into a single .so: liburcu-cds.so to have a single header/shared
  15           object holding all concurrency-aware data containers. It provides
  16           support for RCU lists, queues and stacks at the moment.
  17         * liburcu 0.6.0 now allows linking a single application with multiple
  18           flavors of RCU. This required a library API change which is
  19           incompatible with older 0.5.x liburcu. The .so version number
  20           is therefore bumped from 0 to 1 (e.g. liburcu.so.1).
  21         * Added "atfork" handling API, documented in README. Only useful for
  22           processes using fork() without following exec().
  23         * Renaming the following files, keeping the old files (producing a
  24           compiler warning):
  25             urcu/uatomic_arch.h -> urcu/uatomic.h
  26             urcu/urcu-futex.h -> urcu/futex.h
  27             urcu/urcu_ref.h -> urcu/ref.h
  28
  29 2011-03-04 Userspace RCU 0.5.4
  30          *  urcu-bp: Update fork() handling
  31
  32             Introduce
  33
  34             extern void rcu_bp_before_fork(void);
  35             extern void rcu_bp_after_fork_parent(void);
  36             extern void rcu_bp_after_fork_child(void);
  37
  38             to handle fork gracefully. These disable signals and hold
  39             the registry mutex across forks. (this flavor of the liburcu
  40             library ("bp" for "bulletproof") is mainly used by UST, the
  41             user-space tracer).
  42
  43 2011-03-03 Userspace RCU 0.5.3
  44         * Add support for older ARM single-CPU architecturess (pre-ARMv7)
  45           (thanks to Jason Wessel from WindRiver).
  46         * Fix ARMv7 cmm_rmb/cmm_wmb primitives (use a dmb barrier).
  47         * Remove leftover list_t type from urcu/list.h (namespace cleanup).
  48         * urcu_defer: handle malloc error value.
  49         * Update README file to describe urcu interaction with fork() when not
  50         * followed
  51           by an exec() system call.
  52
  53 2010-11-18 Userspace RCU 0.5.2
  54         * Fix renaming error introduced in 0.5.0.
  55
  56 2010-11-18 Userspace RCU 0.5.1
  57         * Fix renaming error introduced in 0.5.0. (incomplete fix)
  58
  59 2010-11-18 Userspace RCU 0.5.0
  60         * Version 0.5.0 changes the API presented by memory model,
  61           architecture abstraction and data structure primitives in
  62           headers. The prefixes are, respectively:
  63             - cmm_ : Concurrent Memory Model
  64             - caa_ : Concurrent Architecture Abstraction
  65             - cds_ : Concurrent Data Structures
  66
  67 2010-03-04 Userspace RCU 0.4.2
  68         * Add generic uatomic ops support.
  69         * Bugfix in urcu-bp. (rare garbage collection bug occurring in
  70           multithreaded environment). Only affects urcu-bp users (UST).
  71
  72 2010-02-12 Userspace RCU 0.4.1
  73         * s390: compilation fix.
  74
  75 2010-01-30 Userspace RCU 0.4.0
  76         * API change: SIGURCU -> SIGRCU
  77         * API changes: standardize on rcu_ prefix.
  78         * API change: urcu_init -> rcu_init.
  79         * urcu/config.h options renamed to CONFIG_RCU_HAVE_FENCE,
  80           CONFIG_RCU_HAVE_FUTEX, CONFIG_RCU_SMP, CONFIG_RCU_COMPAT_ARCH.
  81           ((moving from URCU -> RCU).
  82         * library names changes: liburcu becomes the "default" version, using
  83           sys_membarrier() when available, and using liburcu-mb as a
  84           fallback.
  85         * The signal-based liburcu is renamed from liburcu to
  86           liburcu-signal. People previously using the signal-based
  87           "liburcu" will automatically be moved to the "default" liburcu
  88           version.
  89
  90 2009-11-16 Userspace RCU 0.3.1
  91         * Add support for sparcv9 32-bit build.
  92         * Update build system to use --host instead of --target.
  93
  94 2009-11-03 Userspace RCU 0.3.0
  95         * API change for the "deferred work" interface.
  96
  97 2009-10-14 Userspace RCU 0.2.3
  98         * Move to autotools.
  99         * Automated architecture detection, with i386 fallback.
 100         * Detect if NR_futex is on the system, fallback on portable
 101           alternatives.
 102         * Add configure mode for UP-only systems.
 103
 104 2009-10-02 Userspace RCU 0.2.2
 105         * Phases out rcu_publish_content() api.
 106         * Adds type checking to urcu-pointer.h pointer exchange primitives.
 107
 108 2009-10-02 Userspace RCU 0.2.1
 109         * small header dependency fix for rculist.h.
 110         * new "liburcu-bp.so" : "Bulletproof RCU", made especially for
 111           the UST userspace tracer. It's a library that sacrifices a bit
 112           of read-side performance for automatically monitoring thread
 113           creation/removal. See README for details.
 114
 115 2009-10-01 Userspace RCU 0.2
 116         * Clarify usage of rcu_cmpxchg_pointer, rcu_xchg_pointer,
 117           rcu_set_pointer.
 118
 119 2009-09-29 Userspace RCU 0.1
 120         * Initial release.