diff options
Diffstat (limited to 'doc/README.changes')
| -rw-r--r-- | doc/README.changes | 90 |
1 files changed, 83 insertions, 7 deletions
diff --git a/doc/README.changes b/doc/README.changes index 3a49e062..a8d7b6c1 100644 --- a/doc/README.changes +++ b/doc/README.changes @@ -1676,16 +1676,92 @@ Since 6.1alpha5: to work correctly with these. - Fixed Linux USE_PROC_FOR_LIBRARIES to work with a 64-bit /proc format. +Since 6.1: + - Guard the test for GC_DUMP_REGULARLY in misc.c with + "#ifndef NO_DEBUGGING". Otherwise it fails to build with NO_DEBUGGING + defined. (Thanks to Manuel Serrano.) + - Message about retrying suspend signals was incorrectly generated even when + flag was not set. + - Cleaned up MACOSX/NEXT root registration code. There was apparently a + separate ifdef case in GC_register_data_segments() for no reason. + - Removed MPROTECT_VDB for MACOSX port, based on one negative report. + - Arrange for gc.h and friends to be correctly installed with GNU-style + "make install". + - Enable the GNU-style build facility include C++ support in the library + with --enable-cplusplus. (Thanks to Thomas Maier for some of the patch.) + - Mark from GC_thread_key in linux_threads.c, in case that's allocated + from the garbage collected heap, as it is with our own thread-specific + storage implementation. (Thanks to Jeff Sturm.) + - Mark all free list header blocks if they are heap allocated. This avoids + some unnecessary tracing. And it remains correct if we turn clear the + root set. (Thanks to Jeff Sturm for identifying the bug.) + - Improved S390/Linux support. Add S390/Linux 64-bit support. (Thanks + to Ulrich Weigand.) + - Corrected the spelling of GC_{M,C}ALLOC_EXPLICTLY_TYPED to + GC_{M,C}ALLOC_EXPLICITLY_TYPED in gc_typed.h. This is technically + an interface change. Based on the fact that nobody reported this, + I suspect/hope there were no clients. + - Cleaned up gc_typed.h so that (1) it adds an extern "C" declaration + when appropriate, (2) doesn't generate references to undefined internal + macros, and (3) allows easier manual construction of descriptors. + - Close the file descriptor used by GC_print_address_map(). + - Set the "close-on-exec" bit for various file descriptors maintained + for the collector's internal use. + - Added a hack to find memory segments owned by the system allocator + under win32. Based on my tests, this tends to eventually find all + segments, though it may take a while. There appear to be cleaner, + but slower solutions under NT/XP. But they rely on an API that's + unsupported under 9X. + - Changed Linux PowerPC stack finding to LINUX_STACKBOTTOM. (Thanks + to Akira Tagoh for pointing out that HEURISTIC1 doesn't work on + 64-bit kernels.) + - Added GC_set_free_space_divisor to avoid some Windows dll issues. + - Added FIXUP_POINTER, POINTER_SHIFT, POINTER_MASK to allow preprocessing + of candidate pointers for tagging, etc. + - Always lock around GC_notify_full_gc(). Simplified code for + invoking GC_notify_full_gc(). + - Changed the way DATASTART is defined on FreeBSD to be robust against + an unmapped page after etext. (Thanks to Hironori Sakamoto for + tracking down the intermittent failure.) + - Made GC_enable() and GC_disable() official. Deprecated direct update + of GC_dont_gc. Changed GC_gcollect to be a noop when garbage collection + is disabled. + - Call GC_register_dynamic_libraries before stopping the world on Linux, + in order to avoid a potential deadlock due to the dl_iterate_phdr lock. + - Introduced a more general mechanism for platform-dependent code to + decide whether the main data segment should be handled separately + from dynamic libraries, or registered by GC_register_dynamic_libraries. + The latter is more reliable and easier on Linux with dl_iterate_phdr. + +Since 6.2alpha1: + - Fixed the completely broken FreeBSD code in 6.2alpha1. (Thanks to + Hironori Sakamoto for the patch.) + - Changed IRIX reference in dbg_mlc.c to IRIX5. (Thanks to Marcus Herbert.) + - Attempted to work around the problems with .S filenames and the SGI + compiler. (Reported by several people. Untested.) + - Worked around an HP/UX make issue with the GNU-style build process. + - Fixed the --enable-cplusplus build machinery to allow builds without + a C++ compiler. (That was always the intent ...) + - Changed the debugging allocation macros to explicitly pass the return + address for Linux and XXXBSD on hardware for which we can't get stack + traces. Use __builtin_return_address(0) to generate it when possible. + Some of the configuration work was cleaned up (good) and moved to gc.h + (bad, but necessary). This should make leak detection more useful + on a number of platforms. (Thanks to Fabian Thylman for the suggestion.) + - Fixed compilation problems in dbg_mlc.c with GC_ADD_CALLER. + - Bumped revision number for dynamic library. + +Since 6.2alpha2: + - Don't include execinfo.h in os_dep.c when it's not needed, and may not exist. + To do: + - A dynamic libgc.so references dlopen unconditionally, but doesn't link + against libdl. + - GC_proc_fd for Solaris is not correctly updated in response to a + fork() call. Thus incremental collection in the child won't work + correctly. (Thanks to Ben Cottrell for pointing this out.) - --enable-redirect-malloc is mostly untested and known not to work on some platforms. - - The win32 collector ends up tracing some (most?) objects allocated with - the system allocator, in spite if the fact that it tries not to. - This costs time and space, though it remains correct. - We need a way to identify memory regions used by the system malloc(), - or an alternate way to locate dll data areas. A very partial - workaround is to use GC_malloc_atomic_uncollectable() instead of - the system malloc() for most allocation. - There seem to be outstanding issues on Solaris/X86, possibly with finding the data segment starting address. Information/patches would be appreciated. |