Fix a compiler warning in chunk_record() that was due to reading node
rather than xnode.  In practice this did not cause any correctness
issue, but dataflow analysis in some compilers cannot tell that node and
xnode are always equal in cases that the read is reached.

Fix a race condition in the "arenas.extend" mallctl that could lead to
internal data structure corruption.  The race could be hit if one
thread called the "arenas.extend" mallctl while another thread
concurrently triggered initialization of one of the lazily created
arenas.

Fix dangerous casts of int variables to pointers in thread join function
calls.  On LP64 systems, int and pointers are different sizes, so
writes can corrupt memory.

Fix a Valgrind integration flaw that caused Valgrind warnings about
reads of uninitialized memory in internal zero-initialized data
structures (relevant to tcache and prof code).

Fix a Valgrind integration flaw that caused Valgrind warnings about
reads of uninitialized memory in arena chunk headers.

Add the JEMALLOC_ALWAYS_INLINE_C macro and use it for always-inlined
functions declared in .c files.  This fixes a function attribute
inconsistency for debug builds that resulted in (harmless) compiler
warnings about functions not being inlinable.

Reported by Ricardo Nabinger Sanchez.

Reported by Ricardo Nabinger Sanchez.

Introduce AROUT to control whether there is space between ARFLAGS and
$@.  This regression was introduced by
ad505e0e.

Reported by Mike Hommey.

Signed-off-by: Riku Voipio <riku.voipio@linaro.org>

Fix chunk_record() to unlock chunks_mtx before deallocating a base
node, in order to avoid potential deadlock.  This fix addresses the
second of two similar bugs.

Fix chunk_record() to unlock chunks_mtx before deallocating a base node,
in order to avoid potential deadlock.

Reported by Tudor Bosman.

Clarify that malloc_conf is intended only for compile-time
configuration, since jemalloc may be initialized before main() is
entered.

Add no-op bodies to VALGRIND_*() macro stubs so that they can be used in
contexts like the following without generating a compiler warning about
the 'if' statement having an empty body:

	if (config_valgrind)
		VALGRIND_MAKE_MEM_UNDEFINED(ret, size);

Checking for __s390x__ means you work on s390x, but not s390 (32bit)
systems.  So use __s390__ which works for both.

With this, `make check` passes on s390.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

Fix a locking order bug that could cause deadlock during fork if heap
profiling were enabled.

Fix Valgrind integration to annotate all internally allocated memory in
a way that keeps Valgrind happy about internal data structure access.

Fix a chunk recycling bug that could cause the allocator to lose track
of whether a chunk was zeroed.  On FreeBSD, NetBSD, and OS X, it could
cause corruption if allocating via sbrk(2) (unlikely unless running with
the "dss:primary" option specified).  This was completely harmless on
Linux unless using mlockall(2) (and unlikely even then, unless the
--disable-munmap configure option or the "dss:primary" option was
specified).  This regression was introduced in 3.1.0 by the
mlockall(2)/madvise(2) interaction fix.

Internal reallocation of the quarantined object array leaked the old array.

Reallocation failure for internal reallocation of the quarantined object
array (very unlikely) resulted in memory corruption.

Avoid writing to uninitialized TLS as a side effect of deallocation.
Initializing TLS during deallocation is unsafe because it is possible
that a thread never did any allocation, and that TLS has already been
deallocated by the threads library, resulting in write-after-free
corruption.  These fixes affect prof_tdata and quarantine; all other
uses of TLS are already safe, whether intentionally (as for tcache) or
unintentionally (as for arenas).

Specify both inline and __attribute__((always_inline)), in order to
avoid warnings when using newer versions of gcc.

Revert refactoring of opt_abort and opt_junk declarations.  clang
accepts the config_*-based declarations (and generates correct code),
but gcc complains with:

  error: initializer element is not constant

Submitted by Frederik Deweerdt.

Convert a couple of stragglers from JEMALLOC_* to use config_*.

Update hash from MurmurHash2 to MurmurHash3, primarily because the
latter generates 128 bits in a single call for no extra cost, which
simplifies integration with cuckoo hashing.

Fix AC_PATH_PROG() calls to specify 'false' as the default, so that if
the configure script fails to find a program, the false program is
instead called, and an error occurs.  Prior to this fix, if xsltproc
could not be found, make would not report an error due to the leading -o
in the xsltproc invocation.

Reported by David Reiss.

Add JEMALLOC_ALWAYS_INLINE and use it to guarantee that the entire fast
paths of the primary allocation/deallocation functions are inlined.

Tighten valgrind integration such that immediately after memory is
validated or zeroed, valgrind is told to forget the memory's 'defined'
state.  The only place newly allocated memory should be left marked as
'defined' is in the public functions (e.g. calloc() and realloc()).