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Diffstat (limited to 'release_docs/RELEASE.txt')
| -rw-r--r-- | release_docs/RELEASE.txt | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt index 242d3e6..13331b1 100644 --- a/release_docs/RELEASE.txt +++ b/release_docs/RELEASE.txt @@ -384,6 +384,23 @@ New Features Library: -------- + - File locking now works on Windows + + Since version 1.10.0, the HDF5 library has used a file locking scheme + to help enforce one reader at a time accessing an HDF5 file, which can + be helpful when setting up readers and writers to use the single- + writer/multiple-readers (SWMR) access pattern. + + In the past, this was only functional on POSIX systems where flock() or + fcntl() were present. Windows used a no-op stub that always succeeded. + + HDF5 now uses LockFileEx() and UnlockFileEx() to lock the file using the + same scheme as POSIX systems. We lock the entire file when we set up the + locks (by passing DWORDMAX as both size parameters to LockFileEx()). + + (DER - 2021/03/19, HDFFV-10191) + + - H5Epush_ret() now requires a trailing semicolon H5Epush_ret() is a function-like macro that has been changed to |