diff options
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 25 |
1 files changed, 18 insertions, 7 deletions
@@ -1,15 +1,13 @@ RELEASE 2.7.0 ------------- -(in CVS) +(2005-06-04) General ------- -Improvements to pthread_once remove priority boosting and other -complexity to improve robustness and efficiency. -- Vladimir Kliatchko - -All other bug fixes and new features in this release have been -back-ported in release 1.11.0. +All new features in this release have been back-ported in release 1.11.0, +including the incorporation of MCS locks in pthread_once, however, versions +1 and 2 remain incompatible even though they are now identical in +performance and functionality. Testing and verification ------------------------ @@ -17,6 +15,19 @@ This release has been tested (passed the test suite) on both uni-processor and multi-processor systems. - Tim Theisen +Bug fixes +--------- +Pthread_once has been re-implemented to remove priority boosting and other +complexity to improve robustness. Races for Win32 handles that are not +recycle-unique have been removed. The general form of pthread_once is now +the same as that suggested earlier by Alexander Terekhov, but instead of the +'named mutex', a queue-based lock has been implemented which has the required +properties of dynamic self initialisation and destruction. This lock is also +efficient. The ABI is unaffected in as much as the size of pthread_once_t has +not changed and PTHREAD_ONCE_INIT has not changed, however, applications that +peek inside pthread_once_t, which is supposed to be opaque, will break. +- Vladimir Kliatchko + New features ------------ * Support for Mingw cross development tools added to GNUmakefile. |