David Goldblatt d4ac7582f3 Introduce a backport of C11 atomics ... This introduces a backport of C11 atomics. It has four implementations; ranked in order of preference, they are: - GCC/Clang __atomic builtins - GCC/Clang __sync builtins - MSVC _Interlocked builtins - C11 atomics, from <stdatomic.h> The primary advantages are: - Close adherence to the standard API gives us a defined memory model. - Type safety: atomic objects are now separate types from non-atomic ones, so that it's impossible to mix up atomic and non-atomic updates (which is undefined behavior that compilers are starting to take advantage of). - Efficiency: we can specify ordering for operations, avoiding fences and atomic operations on strongly ordered architectures (example: `atomic_write_u32(ptr, val);` involves a CAS loop, whereas `atomic_store(ptr, val, ATOMIC_RELEASE);` is a plain store. This diff leaves in the current atomics API (implementing them in terms of the backport). This lets us transition uses over piecemeal. Testing: This is by nature hard to test. I've manually tested the first three options on Linux on gcc by futzing with the #defines manually, on freebsd with gcc and clang, on MSVC, and on OS X with clang. All of these were x86 machines though, and we don't have any test infrastructure set up for non-x86 platforms.		2017-03-03 13:40:59 -08:00
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a0.c	Remove extraneous parens around return arguments.	2017-01-20 21:43:07 -08:00
arena_reset_prof.c	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
arena_reset_prof.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
arena_reset.c	Disentangle arena and extent locking.	2017-02-01 16:43:46 -08:00
atomic.c	Introduce a backport of C11 atomics	2017-03-03 13:40:59 -08:00
base.c	Remove extraneous parens around return arguments.	2017-01-20 21:43:07 -08:00
bitmap.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
ckh.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
decay.c	Immediately purge cached extents if decay_time is 0.	2017-03-02 19:43:06 -08:00
decay.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
extent_quantize.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
fork.c	Remove extraneous parens around return arguments.	2017-01-20 21:43:07 -08:00
hash.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
junk_alloc.c	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
junk_alloc.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
junk_free.c	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
junk_free.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
junk.c	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
junk.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
mallctl.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
math.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
mq.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
mtx.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
nstime.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
pack.c	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
pack.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
pages.c	Remove extraneous parens around return arguments.	2017-01-20 21:43:07 -08:00
ph.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
prng.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
prof_accum.c	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
prof_accum.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
prof_active.c	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
prof_active.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
prof_gdump.c	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
prof_gdump.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
prof_idump.c	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
prof_idump.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
prof_reset.c	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
prof_reset.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
prof_tctx.c	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
prof_tctx.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
prof_thread_name.c	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
prof_thread_name.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
ql.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
qr.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
rb.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
rtree.c	Remove rtree support for 0 (NULL) keys.	2017-02-08 18:50:03 -08:00
SFMT.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
size_classes.c	Remove extraneous parens around return arguments.	2017-01-20 21:43:07 -08:00
slab.c	Disentangle arena and extent locking.	2017-02-01 16:43:46 -08:00
smoothstep.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
spin.c	Enhance spin_adaptive() to yield after several iterations.	2017-02-08 18:50:03 -08:00
stats_print.c	Silence harmless warnings discovered via run_tests.sh.	2017-02-01 11:29:12 -08:00
stats.c	Remove extraneous parens around return arguments.	2017-01-20 21:43:07 -08:00
ticker.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
tsd.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
util.c	Replace tabs following #define with spaces.	2017-01-20 21:45:53 -08:00
witness.c	Add witness_assert_depth[_to_rank]().	2017-02-01 16:43:46 -08:00
zero.c	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00
zero.sh	Use MALLOC_CONF rather than malloc_conf for tests.	2017-02-23 08:57:02 -08:00