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| author | Dana Robinson <derobins@hdfgroup.org> | 2015-04-01 23:29:24 (GMT) |
|---|---|---|
| committer | Dana Robinson <derobins@hdfgroup.org> | 2015-04-01 23:29:24 (GMT) |
| commit | 6986211d6584792ca48cb2469d0e779c445638d2 (patch) | |
| tree | 6c2c9158d8c1e69d2c3e338192da0cb7c8d58182 /release_docs | |
| parent | ad4154cdc89ddf15691dbfe1c609898ef484808b (diff) | |
| download | hdf5-6986211d6584792ca48cb2469d0e779c445638d2.zip hdf5-6986211d6584792ca48cb2469d0e779c445638d2.tar.gz hdf5-6986211d6584792ca48cb2469d0e779c445638d2.tar.bz2 | |
[svn-r26703] Merge of r26392 from trunk.
Adds new memory allocation functions that use the library's
memory allocator. Intended for use with third-party filter
code.
Tested on: h5committest, Solaris (emu), OS X (quail)
Note: emu fails with the existing Inf/inf case problem in
h5dump but no other tests fail.
Diffstat (limited to 'release_docs')
| -rw-r--r-- | release_docs/RELEASE.txt | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt index 7b866ce..52c4ae5 100644 --- a/release_docs/RELEASE.txt +++ b/release_docs/RELEASE.txt @@ -185,7 +185,32 @@ New Features Library ------- - - None + - Added memory allocation functions that use the library's allocator. + + HDF5 filters may need to allocate or resize the buffer that is passed + to them from the library. If the filter has been compiled separately + from the library, it and the library may use different memory + allocation libraries for the (re)allocation and free calls. This can + cause heap corruption and crashes. This is particularly a problem on + Windows since each C run-time library is implemented as a separate + shared library, but can also show up on POSIX systems when debug or + high-performance allocation libraries are in use. + + Two new functions (H5allocate_memory() and H5resize_memory()) were + added to the HDF5 C library. These functions have the same semantics as + malloc/calloc and realloc, respectively. Their primary purpose is to + allow filter authors to allocate or resize memory using the same + memory allocation library as the HDF5 library. Filter authors are + highly encouraged to use these new functions in place of malloc, + calloc, and realloc. They should also use the H5free_memory() call when + freeing memory. + + Note that the filters provided with the library (zlib, szip, etc.) do + not experience the problems that these new functions are intended to + fix. This work only applies to third-party filters that are compiled + separately from the library. + + (DER - 2015-04-01, HDFFV-9100) Parallel Library ---------------- |