zenithsiz/ftmemsim-valgrind
1
0
Fork 0
mirror of https://github.com/Zenithsiz/ftmemsim-valgrind.git synced 2026-02-03 10:05:29 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Update for 3.7.0. (What did I forget?)

Browse Source 
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12212
This commit is contained in:
Julian Seward 2011-10-23 10:05:47 +00:00
parent 20020ced87
commit 5e7b95ac45
1 changed files with 117 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

161
NEWS
View File

@ -1,53 +1,124 @@
Release 3.7.0 (???)
~~~~~~~~~~~~~~~~~~~
Release 3.7.0 (XX November 2011)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3.7.0 is a feature release with many significant improvements and the
usual collection of bug fixes.
- It is now possible to build a working Valgrind using Clang-2.9 on
This release supports X86/Linux, AMD64/Linux, ARM/Linux, PPC32/Linux,
PPC64/Linux, S390X/Linux, ARM/Android, X86/Darwin and AMD64/Darwin.
Support for recent distros and toolchain components (glibc 2.14, gcc
4.6, MacOSX 10.7) has been added.
* ================== PLATFORM CHANGES =================
* Support for IBM z/Architecture (s390x) running Linux. Valgrind can
analyse 64-bit programs running on z/Architecture. Most user space
instructions up to and including z10 are supported. Valgrind has
been tested extensively on z9, z10, and z196 machines running SLES
10/11, RedHat 5/6m, and Fedora. The Memcheck and Massif tools are
known to work well. Callgrind, Helgrind, and DRD work reasonably
well on z9 and later models. See README.s390 for more details.
* Preliminary support for MacOSX 10.7 and XCode 4. Both 32- and
64-bit processes are supported. Some complex threaded applications
(Firefox) are observed to hang when run as 32 bit applications,
whereas 64-bit versions run OK. The cause is unknown. Memcheck
will likely report some false errors. In general, expect some rough
spots. This release also supports MacOSX 10.6, but drops support
for 10.5.
* Preliminary support for Android (on ARM). Valgrind can now run
large applications (eg, Firefox) on (eg) a Samsung Nexus S. See
README.android for more details, plus instructions on how to get
started.
* Support for the IBM Power ISA 2.06 (Power7 instructions)
* General correctness and performance improvements for ARM/Linux, and,
by extension, ARM/Android.
* Further solidification of support for SSE 4.2 on 64-bit mode. AVX
instruction set support is under development but is not available in
this release.
* Support for AIX5 has been removed.
* ==================== TOOL CHANGES ====================
* Memcheck: some incremental changes:
- reduction of memory use in some circumstances
- improved handling of freed memory, which in some circumstances
can cause detection of use-after-free that would previously have
been missed
- fix of a longstanding bug that could cause false negatives (missed
errors) in programs doing vector saturated narrowing instructions.
* Helgrind: performance improvements and major memory use reductions,
particularly for large, long running applications which perform many
synchronisation (lock, unlock, etc) events. Plus many smaller
changes:
- display of locksets for both threads involved in a race
- general improvements in formatting/clarity of error messages
- addition of facilities and documentation regarding annotation
of thread safe reference counted C++ classes
- new flag --check-stack-refs=no|yes [yes], to disable race checking
on thread stacks (a performance hack)
- new flag --free-is-write=no|yes [no], to enable detection of races
where one thread accesses heap memory but another one frees it,
without any coordinating synchronisation event
* DRD: enabled XML output; added support for delayed thread deletion
in order to detect races that occur close to the end of a thread
(--join-list-vol); fixed a memory leak triggered by repeated client
memory allocatation and deallocation; improved Darwin support.
* exp-ptrcheck: this tool has been reduced in scope so as to improve
performance and remove checking that Memcheck does better.
Specifically, the ability to check for overruns for stack and global
arrays is unchanged, but the ability to check for overruns of heap
blocks has been removed. The tool has accordingly been renamed to
exp-sgcheck ("Stack and Global Array Checking").
* ==================== OTHER CHANGES ====================
* GDB server: Valgrind now has an embedded GDB server. That means it
is possible to control a Valgrind run from GDB, doing all the usual
things that GDB can do (single stepping, breakpoints, examining
data, etc). Tool-specific functionality is also available. For
example, it is possible to query the definedness state of variables
or memory from within GDB when running Memcheck; arbitrarily large
memory watchpoints are supported, etc. To use the GDB server, start
Valgrind with the flag --vgdb-error=0 and follow the on-screen
instructions.
* Improved support for unfriendly self-modifying code: a new option
--smc-check=all-non-file is available. This adds the relevant
consistency checks only to code that originates in non-file-backed
mappings. In effect this confines the consistency checking only to
code that is or might be JIT generated, and avoids checks on code
that must have been compiled ahead of time. This significantly
improves performance on applications that generate code at run time.
* It is now possible to build a working Valgrind using Clang-2.9 on
Linux.
- preliminary support for MacOSX 10.7. Both 32- and 64-bit processes
are supported. Some complex threaded applications (Firefox) are
observed to hang when run as 32 bit applications, whereas 64-bit
versions run OK. The cause is unknown. Memcheck will likely report
some false errors. In general, expect some rough spots.
* new client requests VALGRIND_{DISABLE,ENABLE}_ERROR_REPORTING.
These enable and disable error reporting on a per-thread, and
nestable, basis. This is useful for hiding errors in particularly
troublesome pieces of code. The MPI wrapper library (libmpiwrap.c)
now uses this facility.
- new client requests VALGRIND_{DISABLE,ENABLE}_ERROR_REPORTING
* Added the --mod-funcname option to cg_diff.
- Added the --mod-funcname option to cg_diff.
- Further reduction in overheads caused by --smc-check=all, especially
on 64-bit targets.
- new variant --smc-check=all-non-file
- hg: performance improvements and memory use reductions, particularly
for large, long running applications which perform many synch events.
showing of locksets for both threads involved in a race
general improvement of formatting/clarity of error messages
add facilities and documentation regarding annotation of thread safe
reference counted C++ classes
new flag --check-stack-refs=no|yes [yes], to disable race checking
on thread stacks (performance hack)
new flag --free-is-write=no|yes [no], to enable detection of races
where one thread accesses heap memory but another one frees it,
without any coordinating synchronisation event
- DRD: enabled XML output; added support for delayed thread deletion in order
to detect races that occur close to the end of a thread (--join-list-vol);
fixed a memory leak triggered by repeated client memory allocatation and
deallocation; improved Darwin support.
* IBM z/Architecture (s390x) running Linux
Valgrind can analyse 64-bit programs running on z/Architecture.
Most user space instructions up to and including z10 are supported.
Valgrind has been tested extensively on z9, z10, and z196 machines
running SLES 10/11, RedHat 5/6m, and Fedora. The Memcheck and Massif
tools are known to work well. Callgrind, Helgrind, and DRD work
reasonably well on z9 and later models. See README.s390 for more
details.
* ==================== FIXED BUGS ====================
The following bugs have been fixed or resolved. Note that "n-i-bz"
stands for "not in bugzilla" -- that is, a bug that was reported to us
@ -220,6 +291,8 @@ n-i-bz cachegrind/callgrind: handle CPUID information for Core iX Intel CPUs
n-i-bz don't be spooked by libraries mashed by elfhack
n-i-bz don't be spooked by libxul.so linked with gold
(3.7.0: XX November 2011, vex rXXXX, valgrind rXXXXX).
Release 3.6.1 (16 February 2011)