Commit Graph

230 Commits

Author SHA1 Message Date
Jason Evans
dc2125cf95 Replace the arenas.initialized mallctl with arena.<i>.initialized . 2017-01-06 18:58:46 -08:00
Jason Evans
0f04bb1d6f Rename the arenas.extend mallctl to arenas.create. 2017-01-06 18:58:45 -08:00
Jason Evans
3dc4e83ccb Add MALLCTL_ARENAS_ALL.
Add the MALLCTL_ARENAS_ALL cpp macro as a fixed index for use
in accessing the arena.<i>.{purge,decay,dss} and stats.arenas.<i>.*
mallctls, and deprecate access via the arenas.narenas index (to be
removed in 6.0.0).
2017-01-06 18:58:45 -08:00
Jason Evans
a0dd3a4483 Implement per arena base allocators.
Add/rename related mallctls:
- Add stats.arenas.<i>.base .
- Rename stats.arenas.<i>.metadata to stats.arenas.<i>.internal .
- Add stats.arenas.<i>.resident .

Modify the arenas.extend mallctl to take an optional (extent_hooks_t *)
argument so that it is possible for all base allocations to be serviced
by the specified extent hooks.

This resolves #463.
2016-12-26 18:08:28 -08:00
Jason Evans
c1baa0a9b7 Add huge page configuration and pages_[no}huge().
Add the --with-lg-hugepage configure option, but automatically configure
LG_HUGEPAGE even if it isn't specified.

Add the pages_[no]huge() functions, which toggle huge page state via
madvise(..., MADV_[NO]HUGEPAGE) calls.
2016-12-26 17:59:34 -08:00
Jason Evans
bacb6afc6c Simplify arena_slab_regind().
Rewrite arena_slab_regind() to provide sufficient constant data for
the compiler to perform division strength reduction.  This replaces
more general manual strength reduction that was implemented before
arena_bin_info was compile-time-constant.  It would be possible to
slightly improve on the compiler-generated division code by taking
advantage of range limits that the compiler doesn't know about.
2016-12-23 10:34:34 -08:00
Jason Evans
d4c5aceb7c Add a_type parameter to qr_{meld,split}(). 2016-12-12 18:16:51 -08:00
Jason Evans
8a4528bdd1 Uniformly cast mallctl[bymib]() oldp/newp arguments to (void *).
This avoids warnings in some cases, and is otherwise generally good
hygiene.
2016-11-15 15:01:03 -08:00
Jason Evans
2c95154501 Add packing test, which verifies stable layout policy. 2016-11-15 13:08:33 -08:00
Jason Evans
5e0373c815 Fix test_prng_lg_range_zu() to work on 32-bit systems. 2016-11-07 11:50:11 -08:00
Jason Evans
cda59f9970 Rename atomic_*_{uint32,uint64,u}() to atomic_*_{u32,u64,zu}().
This change conforms to naming conventions throughout the codebase.
2016-11-07 11:27:48 -08:00
Jason Evans
04b463546e Refactor prng to not use 64-bit atomics on 32-bit platforms.
This resolves #495.
2016-11-07 10:52:44 -08:00
Jason Evans
ea9961acdb Fix psz/pind edge cases.
Add an "over-size" extent heap in which to store extents which exceed
the maximum size class (plus cache-oblivious padding, if enabled).
Remove psz2ind_clamp() and use psz2ind() instead so that trying to
allocate the maximum size class can in principle succeed.  In practice,
this allows assertions to hold so that OOM errors can be successfully
generated.
2016-11-03 22:33:34 -07:00
Dave Watson
25f7bbcf28 Fix long spinning in rtree_node_init
rtree_node_init spinlocks the node, allocates, and then sets the node.
This is under heavy contention at the top of the tree if many threads
start to allocate at the same time.

Instead, take a per-rtree sleeping mutex to reduce spinning.  Tested
both pthreads and osx OSSpinLock, and both reduce spinning adequately

Previous benchmark time:
./ttest1 500 100
~15s

New benchmark time:
./ttest1 500 100
.57s
2016-11-02 20:30:53 -07:00
Jason Evans
b54072dfee Call _exit(2) rather than exit(3) in forked child.
_exit(2) is async-signal-safe, whereas exit(3) is not.
2016-11-02 18:05:19 -07:00
Jason Evans
977103c897 Uniformly cast mallctl[bymib]() oldp/newp arguments to (void *).
This avoids warnings in some cases, and is otherwise generally good
hygiene.
2016-10-27 21:31:25 -07:00
Jason Evans
44df4a45cf Explicitly cast negative constants meant for use as unsigned. 2016-10-27 21:29:59 -07:00
Jason Evans
17aa187f6b Add cast to silence (harmless) conversion warning. 2016-10-27 21:29:00 -07:00
Jason Evans
b54d160dc4 Do not (recursively) allocate within tsd_fetch().
Refactor tsd so that tsdn_fetch() does not trigger allocation, since
allocation could cause infinite recursion.

This resolves #458.
2016-10-20 23:59:12 -07:00
Jason Evans
577d4572b0 Make dss operations lockless.
Rather than protecting dss operations with a mutex, use atomic
operations.  This has negligible impact on synchronization overhead
during typical dss allocation, but is a substantial improvement for
extent_in_dss() and the newly added extent_dss_mergeable(), which can be
called multiple times during extent deallocations.

This change also has the advantage of avoiding tsd in deallocation paths
associated with purging, which resolves potential deadlocks during
thread exit due to attempted tsd resurrection.

This resolves #425.
2016-10-13 15:37:00 -07:00
Jason Evans
9acd5cf178 Remove all vestiges of chunks.
Remove mallctls:
- opt.lg_chunk
- stats.cactive

This resolves #464.
2016-10-12 11:55:43 -07:00
Jason Evans
63b5657aa5 Remove ratio-based purging.
Make decay-based purging the default (and only) mode.

Remove associated mallctls:
- opt.purge
- opt.lg_dirty_mult
- arena.<i>.lg_dirty_mult
- arenas.lg_dirty_mult
- stats.arenas.<i>.lg_dirty_mult

This resolves #385.
2016-10-12 10:40:27 -07:00
Jason Evans
48993ed536 Fix decay tests to all adapt to nstime_monotonic(). 2016-10-11 15:28:43 -07:00
Jason Evans
5f11fb7d43 Do not advance decay epoch when time goes backwards.
Instead, move the epoch backward in time.  Additionally, add
nstime_monotonic() and use it in debug builds to assert that time only
goes backward if nstime_update() is using a non-monotonic time source.
2016-10-10 22:15:10 -07:00
Elliot Ronaghan
fbd7956d45 Work around a weird pgi bug in test/unit/math.c
pgi fails to compile math.c, reporting that `-INFINITY` in `pt_norm_expected[]`
is a "Non-constant" expression. A simplified version of this failure is:

```c
#include <math.h>

static double inf1, inf2 = INFINITY;  // no complaints
static double inf3 = INFINITY;        // suddenly INFINITY is "Non-constant"

int main() { }
```

```sh
PGC-S-0074-Non-constant expression in initializer (t.c: 4)
```

pgi errors on the declaration of inf3, and will compile fine if that line is
removed. I've reported this bug to pgi, but in the meantime I just switched to
using (DBL_MAX + DBL_MAX) to work around this bug.
2016-06-08 14:20:32 -07:00
Jason Evans
04942c3d90 Remove a stray memset(), and fix a junk filling test regression. 2016-06-05 21:00:02 -07:00
Jason Evans
6f29a83924 Add rtree lookup path caching.
rtree-based extent lookups remain more expensive than chunk-based run
lookups, but with this optimization the fast path slowdown is ~3 CPU
cycles per metadata lookup (on Intel Core i7-4980HQ), versus ~11 cycles
prior.  The path caching speedup tends to degrade gracefully unless
allocated memory is spread far apart (as is the case when using a
mixture of sbrk() and mmap()).
2016-06-05 20:59:57 -07:00
Jason Evans
c8c3cbdf47 Miscellaneous s/chunk/extent/ updates. 2016-06-05 20:42:24 -07:00
Jason Evans
0c4932eb1e s/chunk_lookup/extent_lookup/g, s/chunks_rtree/extents_rtree/g 2016-06-05 20:42:23 -07:00
Jason Evans
7d63fed0fd Rename huge to large. 2016-06-05 20:42:23 -07:00
Jason Evans
498856f44a Move slabs out of chunks. 2016-06-05 20:42:23 -07:00
Jason Evans
ed2c2427a7 Use huge size class infrastructure for large size classes. 2016-06-05 20:42:18 -07:00
Jason Evans
b46261d58b Implement cache-oblivious support for huge size classes. 2016-06-03 12:27:41 -07:00
Jason Evans
fc0372a15e Replace extent_tree_szad_* with extent_heap_*. 2016-06-03 12:27:41 -07:00
Jason Evans
25845db7c9 Dodge ivsalloc() assertion in test code. 2016-06-03 12:27:41 -07:00
Jason Evans
e75e9be130 Add rtree element witnesses. 2016-06-03 12:27:41 -07:00
Jason Evans
8c9be3e837 Refactor rtree to always use base_alloc() for node allocation. 2016-06-03 12:27:41 -07:00
Jason Evans
2d2b4e98c9 Add element acquire/release capabilities to rtree.
This makes it possible to acquire short-term "ownership" of rtree
elements so that it is possible to read an extent pointer *and* read the
extent's contents with a guarantee that the element will not be modified
until the ownership is released.  This is intended as a mechanism for
resolving rtree read/write races rather than as a way to lock extents.
2016-06-03 12:27:33 -07:00
Jason Evans
a7a6f5bc96 Rename extent_node_t to extent_t. 2016-05-16 12:21:28 -07:00
Jason Evans
7bb00ae9d6 Refactor runs_avail.
Use pszind_t size classes rather than szind_t size classes, and always
reserve space for NPSIZES elements.  This removes unused heaps that are
not multiples of the page size, and adds (currently) unused heaps for
all huge size classes, with the immediate benefit that the size of
arena_t allocations is constant (no longer dependent on chunk size).
2016-05-16 12:21:21 -07:00
Jason Evans
226c446979 Implement pz2ind(), pind2sz(), and psz2u().
These compute size classes and indices similarly to size2index(),
index2size() and s2u(), respectively, but using the subset of size
classes that are multiples of the page size.  Note that pszind_t and
szind_t are not interchangeable.
2016-05-13 10:31:54 -07:00
Jason Evans
627372b459 Initialize arena_bin_info at compile time rather than at boot time.
This resolves #370.
2016-05-13 10:31:30 -07:00
Jason Evans
b683734b43 Implement BITMAP_INFO_INITIALIZER(nbits).
This allows static initialization of bitmap_info_t structures.
2016-05-13 10:27:48 -07:00
Jason Evans
17c021c177 Remove redzone support.
This resolves #369.
2016-05-13 10:27:33 -07:00
Jason Evans
ba5c709517 Remove quarantine support. 2016-05-13 10:25:05 -07:00
Jason Evans
9a8add1510 Remove Valgrind support. 2016-05-13 09:56:18 -07:00
Jason Evans
c1e00ef2a6 Resolve bootstrapping issues when embedded in FreeBSD libc.
b2c0d6322d (Add witness, a simple online
locking validator.) caused a broad propagation of tsd throughout the
internal API, but tsd_fetch() was designed to fail prior to tsd
bootstrapping.  Fix this by splitting tsd_t into non-nullable tsd_t and
nullable tsdn_t, and modifying all internal APIs that do not critically
rely on tsd to take nullable pointers.  Furthermore, add the
tsd_booted_get() function so that tsdn_fetch() can probe whether tsd
bootstrapping is complete and return NULL if not.  All dangerous
conversions of nullable pointers are tsdn_tsd() calls that assert-fail
on invalid conversion.
2016-05-10 22:51:33 -07:00
Jason Evans
0c12dcabc5 Fix tsd bootstrapping for a0malloc(). 2016-05-07 16:55:36 -07:00
Jason Evans
1eb46ab6e7 Don't test fork() on Windows. 2016-05-03 17:18:34 -07:00
Jason Evans
108c4a11e9 Fix witness/fork() interactions.
Fix witness to clear its list of owned mutexes in the child if
platform-specific malloc_mutex code re-initializes mutexes rather than
unlocking them.
2016-04-26 10:47:22 -07:00
Jason Evans
174c0c3a9c Fix fork()-related lock rank ordering reversals. 2016-04-25 23:16:20 -07:00
Jason Evans
2fe64d237c Fix arena_reset() test to avoid tcache. 2016-04-25 12:51:17 -07:00
Jason Evans
19ff2cefba Implement the arena.<i>.reset mallctl.
This makes it possible to discard all of an arena's allocations in a
single operation.

This resolves #146.
2016-04-22 15:20:06 -07:00
Jason Evans
1423ee9016 Fix style nits. 2016-04-17 13:44:59 -07:00
Jason Evans
b2c0d6322d Add witness, a simple online locking validator.
This resolves #358.
2016-04-14 02:09:28 -07:00
Jason Evans
bab58ef401 Fix more 64-to-32 conversion warnings. 2016-04-12 12:39:02 -07:00
Jason Evans
96aa67aca8 Clean up char vs. uint8_t in junk filling code.
Consistently use uint8_t rather than char for junk filling code.
2016-04-11 02:26:35 -07:00
Jason Evans
c6a2c39404 Refactor/fix ph.
Refactor ph to support configurable comparison functions.  Use a cpp
macro code generation form equivalent to the rb macros so that pairing
heaps can be used for both run heaps and chunk heaps.

Remove per node parent pointers, and instead use leftmost siblings' prev
pointers to track parents.

Fix multi-pass sibling merging to iterate over intermediate results
using a FIFO, rather than a LIFO.  Use this fixed sibling merging
implementation for both merge phases of the auxiliary twopass algorithm
(first merging the aux list, then replacing the root with its merged
children).  This fixes both degenerate merge behavior and the potential
for deep recursion.

This regression was introduced by
6bafa6678f (Pairing heap).

This resolves #371.
2016-04-11 02:15:42 -07:00
Jason Evans
a3c4193280 Fix a compilation warning in the ph test code. 2016-04-05 16:32:59 -07:00
Chris Peterson
a82070ef5f Add JEMALLOC_ALLOC_JUNK and JEMALLOC_FREE_JUNK macros
Replace hardcoded 0xa5 and 0x5a junk values with JEMALLOC_ALLOC_JUNK and
JEMALLOC_FREE_JUNK macros, respectively.
2016-03-31 11:23:29 -07:00
Jason Evans
22af74e106 Refactor out signed/unsigned comparisons. 2016-03-15 09:40:02 -07:00
Dave Watson
34dca5671f Unittest for pairing heap 2016-03-08 13:48:27 -08:00
Dmitri Smirnov
33184bf698 Fix stack corruption and uninitialized var warning
Stack corruption happens in x64 bit

This resolves #347.
2016-02-29 15:22:53 -08:00
Jason Evans
7d3055432d Fix decay tests for --disable-tcache case. 2016-02-27 23:40:31 -08:00
Jason Evans
3c07f803aa Fix stats.arenas.<i>.[...] for --disable-stats case.
Add missing stats.arenas.<i>.{dss,lg_dirty_mult,decay_time}
initialization.

Fix stats.arenas.<i>.{pactive,pdirty} to read under the protection of
the arena mutex.
2016-02-27 20:40:13 -08:00
Jason Evans
fd4858225b Fix decay tests for --disable-stats case. 2016-02-27 20:38:29 -08:00
Jason Evans
01ecdf32d6 Miscellaneous bitmap refactoring. 2016-02-26 14:21:10 -08:00
Jason Evans
e3195fa4a5 Cast PTRDIFF_MAX to size_t before adding 1.
This fixes compilation warnings regarding integer overflow that were
introduced by 0c516a00c4 (Make *allocx()
size class overflow behavior defined.).
2016-02-25 16:40:24 -08:00
Jason Evans
0c516a00c4 Make *allocx() size class overflow behavior defined.
Limit supported size and alignment to HUGE_MAXCLASS, which in turn is
now limited to be less than PTRDIFF_MAX.

This resolves #278 and #295.
2016-02-25 15:29:49 -08:00
Jason Evans
9e1810ca9d Silence miscellaneous 64-to-32-bit data loss warnings. 2016-02-24 13:03:48 -08:00
Jason Evans
8f683b94a7 Make opt_narenas unsigned rather than size_t. 2016-02-24 13:03:48 -08:00
Dave Watson
2b1fc90b7b Remove rbt_nil
Since this is an intrusive tree, rbt_nil is the whole size of the node
and can be quite large.  For example, miscelm is ~100 bytes.
2016-02-23 18:09:25 -08:00
Jason Evans
0da8ce1e96 Use table lookup for run_quantize_{floor,ceil}().
Reduce run quantization overhead by generating lookup tables during
bootstrapping, and using the tables for all subsequent run quantization.
2016-02-22 16:47:34 -08:00
Jason Evans
a9a4684792 Test run quantization.
Also rename run_quantize_*() to improve clarity.  These tests
demonstrate that run_quantize_ceil() is flawed.
2016-02-22 14:58:05 -08:00
Jason Evans
9bad079039 Refactor time_* into nstime_*.
Use a single uint64_t in nstime_t to store nanoseconds rather than using
struct timespec.  This reduces fragility around conversions between long
and uint64_t, especially missing casts that only cause problems on
32-bit platforms.
2016-02-21 21:39:05 -08:00
Jason Evans
a0aaad1afa Handle unaligned keys in hash().
Reported by Christopher Ferris <cferris@google.com>.
2016-02-20 10:23:48 -08:00
Jason Evans
9f24c94474 Increase test coverage in test_decay_ticks. 2016-02-20 09:02:49 -08:00
Jason Evans
243f7a0508 Implement decay-based unused dirty page purging.
This is an alternative to the existing ratio-based unused dirty page
purging, and is intended to eventually become the sole purging
mechanism.

Add mallctls:
- opt.purge
- opt.decay_time
- arena.<i>.decay
- arena.<i>.decay_time
- arenas.decay_time
- stats.arenas.<i>.decay_time

This resolves #325.
2016-02-19 20:56:21 -08:00
Jason Evans
8e82af1166 Implement smoothstep table generation.
Check in a generated smootherstep table as smoothstep.h rather than
generating it at configure time, since not all systems (e.g. Windows)
have dc.
2016-02-19 20:56:15 -08:00
Jason Evans
34676d3369 Refactor prng* from cpp macros into inline functions.
Remove 32-bit variant, convert prng64() to prng_lg_range(), and add
prng_range().
2016-02-19 20:29:06 -08:00
Jason Evans
9998000b2b Implement ticker.
Implement ticker, which provides a simple API for ticking off some
number of events before indicating that the ticker has hit its limit.
2016-02-19 20:29:06 -08:00
Jason Evans
94451d184b Flesh out time_*() API. 2016-02-19 20:29:06 -08:00
Cameron Evans
e5d5a4a517 Add time_update(). 2016-02-19 20:29:06 -08:00
Jason Evans
f829009929 Add --with-malloc-conf.
Add --with-malloc-conf, which makes it possible to embed a default
options string during configuration.
2016-02-19 20:29:06 -08:00
Jason Evans
49931bd8ff Fix test_stats_arenas_summary fragility.
Fix test_stats_arenas_summary to deallocate before asserting that
purging must have happened.
2016-02-19 20:29:06 -08:00
Joshua Kahn
710ca112e3 Add test for tree destruction 2015-11-09 15:56:24 -08:00
Joshua Kahn
13b4015531 Allow const keys for lookup
Signed-off-by: Steve Dougherty <sdougherty@barracuda.com>

This resolves #281.
2015-11-09 15:48:05 -08:00
Jason Evans
676df88e48 Rename arena_maxclass to large_maxclass.
arena_maxclass is no longer an appropriate name, because arenas also
manage huge allocations.
2015-09-11 20:50:20 -07:00
Jason Evans
a00b10735a Fix "prof.reset" mallctl-related corruption.
Fix heap profiling to distinguish among otherwise identical sample sites
with interposed resets (triggered via the "prof.reset" mallctl).  This
bug could cause data structure corruption that would most likely result
in a segfault.
2015-09-09 23:16:10 -07:00
Jason Evans
594c759f37 Optimize arena_prof_tctx_set().
Optimize arena_prof_tctx_set() to avoid reading run metadata when
deciding whether it's actually necessary to write.
2015-09-02 14:52:24 -07:00
Christopher Ferris
45e9f66c28 Fix arenas_cache_cleanup().
Fix arenas_cache_cleanup() to handle allocation/deallocation within the
application's thread-specific data cleanup functions even after
arenas_cache is torn down.
2015-08-21 12:33:17 -07:00
Jason Evans
d01fd19755 Rename index_t to szind_t to avoid an existing type on Solaris.
This resolves #256.
2015-08-19 15:21:32 -07:00
Jason Evans
38d8f50144 Fix assertion in test. 2015-08-12 12:06:38 -07:00
Jason Evans
4be0c3ca42 Add no-OOM assertions to test. 2015-08-07 00:51:11 -07:00
Jason Evans
5fae7dc1b3 Fix MinGW-related portability issues.
Create and use FMT* macros that are equivalent to the PRI* macros that
inttypes.h defines.  This allows uniform use of the Unix-specific format
specifiers, e.g. "%zu", as well as avoiding Windows-specific definitions
of e.g. PRIu64.

Add ffs()/ffsl() support for compiling with gcc.

Extract compatibility definitions of ENOENT, EINVAL, EAGAIN, EPERM,
ENOMEM, and ENORANGE into include/msvc_compat/windows_extra.h and
use the file for tests as well as for core jemalloc code.
2015-07-23 13:56:25 -07:00
Jason Evans
218b15cc29 Fix more MinGW build warnings. 2015-07-17 18:12:44 -07:00
Jason Evans
f2bc85298c Add the config.cache_oblivious mallctl. 2015-07-17 16:38:25 -07:00
Jason Evans
ae93d6bf36 Avoid function prototype incompatibilities.
Add various function attributes to the exported functions to give the
compiler more information to work with during optimization, and also
specify throw() when compiling with C++ on Linux, in order to adequately
match what __THROW does in glibc.

This resolves #237.
2015-07-10 16:09:40 -07:00
Jason Evans
dde067264d Fix an integer overflow bug in {size2index,s2u}_compute().
This {bug,regression} was introduced by
155bfa7da1 (Normalize size classes.).

This resolves #241.
2015-07-09 21:36:33 -07:00
Jason Evans
7ae1239177 Fix indentation. 2015-07-09 16:32:49 -07:00