Sync VEX/LICENSE.GPL with top-level COPYING file. We used 3 different
addresses for writing to the FSF to receive a copy of the GPL. Replace
all different variants with an URL <http://www.gnu.org/licenses/>.
The following files might still have some slightly different (L)GPL
copyright notice because they were derived from other programs:
- files under coregrind/m_demangle which come from libiberty:
cplus-dem.c, d-demangle.c, demangle.h, rust-demangle.c,
safe-ctype.c and safe-ctype.h
- coregrind/m_demangle/dyn-string.[hc] derived from GCC.
- coregrind/m_demangle/ansidecl.h derived from glibc.
- VEX files for FMA detived from glibc:
host_generic_maddf.h and host_generic_maddf.c
- files under coregrin/m_debuginfo derived from LZO:
lzoconf.h, lzodefs.h, minilzo-inl.c and minilzo.h
- files under coregrind/m_gdbserver detived from GDB:
gdb/signals.h, inferiors.c, regcache.c, regcache.h,
regdef.h, remote-utils.c, server.c, server.h, signals.c,
target.c, target.h and utils.c
Plus the following test files:
- none/tests/ppc32/testVMX.c derived from testVMX.
- ppc tests derived from QEMU: jm-insns.c, ppc64_helpers.h
and test_isa_3_0.c
- tests derived from bzip2 (with embedded GPL text in code):
hackedbz2.c, origin5-bz2.c, varinfo6.c
- tests detived from glibc: str_tester.c, pth_atfork1.c
- test detived from GCC libgomp: tc17_sembar.c
- performance tests derived from bzip2 or tinycc (with embedded GPL
text in code): bz2.c, test_input_for_tinycc.c and tinycc.c
Rerunning valgrind under valgrind shows that interp_name and interp_args
memory was freed twice.
=> reworked the way interp_name and interp_args are freed:
* free them in VG_(ii_create_image) (linux/darwin/solaris)
* everywhere else, when overriden, first free the current value
* everywhere where interp_name or interp_args are freed, set them to NULL
With this, re-selfhosting valgrind shows no leak and no corruption
for interp_name and interp_args.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@16044
Unlikely as it seems, this saves a considerable number of instructions (2% of total)
on very heap-intensive code (perf/heap.c).
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15926
The mmap'd max/curr and max/curr nr of bytes will be shown e.g. as
11,440,408/ 4,508,968
instead of
11440656/ 4509200
So, using more space, but more readable (in particular when the
nr exceeds the width, and so are not aligned anymore)
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15208
while this nr is in fact the total anonymously mmap-ed.
Change the message so as to reflect the shown number.
* Show also the total anonymous mmaped in non OOM memory statistics
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15177
VG_(am_set_segment_isCH_if_SkAnonC).
Rename VG_(am_set_segment_hasT_if_client_segment) to
VG_(am_set_segment_hasT) passing in an address (because that function
cannot possible take a pointer to a *const* segment). Also assert that
the segment containing the address is a client segment. Everything else
is a bug.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14993
Left justification of strings in myvprintf_str was mixed up.
Now fixed and %s formats changed accordingly.
In function myvprintf_int64: the local buffer was not large
enough to hold ULONG_MAX in binary notation. Numbers were
truncated at 39 digits.
Testcases added.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14808
Tool files shall use tl_assert not vg_assert.
Fix code accordingly.
Adapted check_headers_and_includes to make sure the code
stays clean in that respect.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14542
board (instead of e.g. VG_(arena_malloc)(VG_AR_CORE,...). This change
also benefits static analysers. We can tell tools that VG_(malloc) allocates
and VG_(free) deallocates and that they are a pair. But we cannot do that for
arena_malloc/free.
Also provide a wrapper VG_(realloc_shrink).
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14517
because it operates on the CLIENT arena. Given that VG_(malloc)
operates on the CORE arena, it was unexpected for VG_(mallos_usable_size)
to use a different arena.
Move function definition to the proper place (next to VG_(cli_malloc))
and fix call sites.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14516
only decrease the size of a block, does not change the address,
does not need to alloc another block and copy the memory,
and (if big enough) makes the excess memory available for other
allocations.
VG_(arena_realloc_shrink) is then used for debuginfo storage.c
(replacing an allocation + copy).
Also use it in the dedup pool, to recuperate the unused
memory of the last pool.
This also allows to re-increase the string pool size to the original
3.9.0 value of 64Kb. All this slightly decrease the peak and in use
memory of dinfo.
VG_(arena_realloc_shrink) will also be used to implement (in another patch)
a dedup pool which "numbers" the allocated elements.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14122
of memcheck and helgrind in a common module:
pub_tool_addrinfo.h pub_core_addrinfo.h m_addrinfo.c
At the same time, the factorised code is made usable by other
tools also (and is used by the gdbserver command 'v.info location'
which replaces the helgrind 'describe addr' introduced 1 week ago
and which is now callable by all tools).
The new address description code can describe more addresses
(e.g. for memcheck, if the block is not on the free list anymore,
but is in an arena free list, this will also be described).
Similarly, helgrind address description can now describe more addresses
when --read-var-info=no is given (e.g. global symbols are
described, or addresses on the stack are described as
being on the stack, freed blocks in the arena free list are
described, ...).
See e.g. the change in helgrind/tests/annotate_rwlock.stderr.exp
or locked_vs_unlocked2.stderr.exp
The patch touches many files, but is basically a lot of improvements
in helgrind output files.
The code changes are mostly refactorisation of existing code.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13965
making it easier to understand the memory and/or oom situation.
No functional (user level) change.
* For --profile-heap=yes, sort the cost centers by decreasing size,
so that the most relevant cost centers are closed to the arena
total.
* factorise duplicated code calling a series of print stat functions
* VG_(show_sched_status)
optionally show the host stacktrace
the amount of valgrind stack used by each thread
the exited threads
* various functions: update to add VG_(show_sched_status) new
args, keeping the same info production as before.
* In case of out of memory situation detected by m_mallocfree.c,
reports more information:
valgrind and tool stats
scheduler status (full information)
* gdbserver v.info scheduler :
show full information.
The oom behaviour/reporting was tested using a small
program causing an OOM, and having several threads
(some terminated, some still active).
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13897
it turned out that coregrind freely allocates memory on the tool
arena (which it should not, conceptually) and tools rely on coregrind
doing so (by VG_(free)'ing memory allocated by coregrind).
Entangling this mess is risky and provides little benefit except
architectural cleanliness.
Thinking more about it... It isn't really all that interesting how
much memory is allocated by tool code in and by itself. What is
interesting is the total memory impact a tool has, e.g. as compared
to running "none".
So in this patch the number of memory arenas is consolidated by
subsuming VG_AR_TOOL/ERRORS/EXECCTXT into VG_AR_CORE.
VG_(malloc) and friends have been modified to operate on VG_AR_CORE.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13575
Some tests are failing in an "outer/inner" setup with an "out of memory"
situation reported by the inner (e.g. memcheck/tests/err_disable4.vgtest).
Looks like this is because the inner valgrind aspacemgr believes
a segment is free and can be used, but segment is in fact used by the outer.
This can happen as the inner cannot observe the outer mmap, and so
inner aspacemgr can be out of sync with the kernel and the outer.
This kludge bypasses the problem: if the fixed mmap fails in the inner,
the inner retries without the fixed.
This is a kludge as the proper solution would be to have a correct
state of aspacemgr in the inner. This however implies a more in-depth surgery
in the outer/inner setup (to have e.g. the outer informing the inner of
its own mmap or alternatively having the inner asking the outer about the
mmap advisory).
Kludge is preferred (at least now) as this kludge is activated only
for the inner (and for darwin, but that was already like that).
Of course, this kludge does not the state of the inner aspacemgr
matching the outer and kernel state.
So, other problems might be detected e.g. if inner aspacemgr does a check
comparing its status with kernel status.
The patch also ensures the inner reports the memory status of the
outer (using a client request) when an out of memory situation is detected.
This helps understanding what goes wrong.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13495
This generalises the "perm_malloc" function which was in ms_main.c
The new VG_(perm_malloc) is used in ms_main.c
and for execontext : when there are a lot of execontext, this
can save significant memory.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13238
In case of out of memory, Valgrind will output
the state of the address space manager and of the arena.
Then it will output a message to inform the user about the out of memory.
In case out of memory happens again while outputting the aspacemgr
or arena info, then another trial is done to only output the user msg.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13077
* For tools replacing the malloc library (e.g. Memcheck, Helgrind, ...),
the option --redzone-size=<number> allows to control the padding
blocks (redzones) added before and after each client allocated block.
Smaller redzones decrease the memory needed by Valgrind. Bigger
redzones increase the chance to detect blocks overrun or underrun.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12807
Note that VG_(arena_memalign) is not used by core or tools for the moment.
We have one single maxima for both the V core/tools and the client.
Enhanced memcheck/tests/memalign2.c to test 4 Mb and 16 Mb alignments.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12642
A '3 lines how to':
perl tests/vg_regtest --outer-valgrind=../trunk_untouched/install/bin/valgrind --all
(the outer results for a test xxx is in xxx.outer.log)
To run with another tool (e.g. drd), add the argument --outer-tool=drd
Still to do/things to improve:
* Most (inner) tests are successful when running under an outer
memcheck. Need to analyse the reasons of remaining failures.
* The memcheck annotations in m_mallocfree.c can be improved:
- A superblock is marked 'undefined', it should rather be marked
'no access'.
- When a free block is splitted, the remaining free block is
not made 'no access'. Instead, it is made 'undefined'.
=> this decreases the chance to find bugs.
=> this is not very efficient (e.g. the rest of a superblock
is often marked undefined repetitively).
Similarly, the free block created by VG_(arena_memalign)
is marked 'undefined'. 'No access' would be preferrable.
- mkInuseBlock marks the new block as undefined. This is probably
not needed, as VALGRIND_MALLOCLIKE_BLOCK will do it already.
- VG_(arena_malloc) should give the requested size to
VALGRIND_MALLOCLIKE_BLOCK, not the malloc usable size,
as this decreases the chance to find buffer overrun bugs.
But giving the requested size is tricky (see comments in
the code).
* need to do memcheck annotations in m_poolalloc.c
so as to allow leak checking for pool allocated elements.
* vg_regtest.in
- should analyse the results of the outer and should
produce a separate result for the tests for which
the outer detects an error or a memory leak or ...
Changes done:
README_DEVELOPERS: document the new outer/inner features.
manual-core.xml: document the new sim-hint no-inner-prefix
tests/outer_inner.supp: new file, containing the suppressions for inner.
vg_regtest.in: implement new args --outer-valgrind, --outer-tool, --outer-args.
m_mallocfree.c: annotations for memcheck.
m_libcprint.c: handle the new sim-hint no-inner-prefix
m_main.c: do an (early) parse of --sim-hints
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12441
splittable superblocks. Bug #282105.
(Philippe Waroquiers, philippe.waroquiers@skynet.be)
A previous patch (bug 250101) introduced the concept of reclaimable
superblock: a superblock that cannot be splitted in smaller blocks
and that can be munmapped.
This patch generalises the reclaimable concept : all superblocks are
now reclaimable. To reduce fragmentation, big superblocks are still
kept unsplittable.
The patch has 4 aspects:
1 The previous concept of 'reclaimable superblock' is renamed
'unsplittable superblock' (this is a mechanical change).
2 Ensure that splittable blocks can be reclaimed :
After each free, if the free results in a merged block which
completely covers the superblock, then the superblock can be reclaimed.
3 If a superblock is reclaimed and there exists some translations
for this superblock then discard the translations.
Note : I did not understand the comment speaking about
circular dependency. Just calling VG_(discard_translations) seems
to cause no problem. As m_transtab.c does not allocate client memory,
I believe no circular (dynamic) dependency can be done.
4 Activate 'unsplittable superblock' for all arenas.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12047
