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12771. By philippe on 2017-08-08

Ensure host stack trace has better chance to work when valgrind is exiting

When investigating bug 383275, the host stacktrace was containing
only one IP. This is because the tid corresponding to the lwpid
is dead, and so no valid thread state was returned.
This then gave a rubbish stacktop of 0, which means unwinding
stops at first frame.

So, try harder to find a valid thread state when reporting the
host stacktrace.

12770. By philippe on 2017-08-08

Fix 383275 - massif valgrind: m_xarray.c:162 (ensureSpaceXA): Assertion '!xa->arr' failed

When a massif xtree snapshot is taken when no allocation was done,
the xtree contains no exe context.
The data structure ips_order_xecu is then szied to 0 using VG_(hintSizeXA).
m_xarray.c then allocates an empty array, while later on, a zero size
is expected to correspond to no allocated array.

Fix the problem in m_xarray.c, by not doing any allocation if the
size hint is 0.

12769. By iraisr on 2017-08-03

Document Solaris kernel interfaces used. Not exhaustive list.
n-i-bz

12768. By iraisr on 2017-08-03

Fix handling command line option --xml-socket.
Fixes BZ#382998
Patch by: Orgad Shaneh <email address hidden>

12767. By philippe on 2017-08-01

Various minor fixes and correction in user manual and monitor command help

12766. By philippe on 2017-07-31

Fix 382515 - valgrind: "Assertion 'di->have_dinfo' failed." on wine's dlls/mscoree/tests/mscoree.c

* produce (more) user messages when valgrind cannot read a pdb file.
* recover properly from an invalid/unsupported pdb file.

12765. By iraisr on 2017-07-31

Fix the Solaris build after development trunk has been renamed.

Effectively Solaris 12 is now becoming Solaris 11.4.

12764. By iraisr on 2017-07-28

Check whether it is ok to use compiler flag '-pie'.
Some compilers actually do not support -pie and report its usage
as an error. We need to check if it is safe to use it first.
n-i-bz

12763. By philippe on 2017-07-27

valgrind core side for Add inner requests in VEX (cfr revision 3399)

When running Valgrind under Valgrind, the VEX memory allocation
(temporary or permanent) was not checked, as there was no
inner request.
This patch changes VEX to mark the temporary and permanent
allocations with redzone, and memory is marked unaddressable
when the VEX temporary pool is cleared.

The changes are:
* add a file libvex_inner.h which mostly takes over what
  was in pub_core_inner.h (which now just includes libvex_inner.h)

* modify main_util.h and main_util.c to mark the temporary
  and permanent pool with memcheck pool requests to indicate
  when a block is allocated or freed.

* Impact is (should be) none, unless Valgrind is configured
  as an inner.

* Outer memcheck/inner regression tests run on gcc20 (amd64).
  Nothing (more worrying than the 3.13 self hosting) detected

12762. By iraisr on 2017-07-22

New command line option "--terse" for vg_perf.
Fixes BZ#382407.

Produces the following terse output:

-- bigcode1 --
vanilla : no: ----- me: ----- ca: ----- he: ----- ca: ----- dr: ----- ma: -----
ra3-005 : no: 0.0% me: -4.7% ca: 0.2% he: -1.1% ca: -1.5% dr: -0.6% ma: 0.0%
ra3-005-J : no: 0.0% me: 0.4% ca: 0.3% he: -0.5% ca: -0.9% dr: 0.0% ma: 0.6%
ra3-006 : no: 0.0% me: 0.4% ca: 0.2% he: -0.0% ca: -1.2% dr: 0.0% ma: 0.0%
ra3-007 : no: 0.0% me: 0.7% ca: 0.5% he: -0.5% ca: -0.6% dr: 0.0% ma: 1.2%

instead the full output (when the option is not used):
-- bigcode1 --
bigcode1 vanilla:0.09s no: 1.6s (18.0x, -----) me: 3.1s (35.0x, -----) ca:12.7s (140.8x, -----) he: 2.0s (22.8x, -----) ca: 3.7s (41.2x, -----) dr: 2.0s (22.2x, -----) ma: 1.9s (20.7x, -----)
bigcode1 ra3-005:0.09s no: 1.6s (17.8x, 1.2%) me: 3.0s (33.3x, 4.8%) ca:12.7s (140.7x, 0.1%) he: 2.0s (22.2x, 2.4%) ca: 3.6s (40.2x, 2.4%) dr: 1.9s (21.7x, 2.5%) ma: 1.9s (20.7x, 0.0%)