Commit Graph

776 Commits

Author SHA1 Message Date
Kevin Svetlitski
314c073a38 Print the failed assertion before aborting in test cases
This makes it faster and easier to debug, so that you don't need to fire
up a debugger just to see which assertion triggered in a failing test.
2023-07-13 15:07:17 -07:00
Kevin Svetlitski
65d3b5989b Print test error messages in color when stderr is a terminal
When stderr is a terminal and supports color, print error messages
from tests in red to make them stand out from the surrounding output.
2023-07-13 13:03:23 -07:00
Kevin Svetlitski
589c63b424 Make eligible global variables static and/or const
For better or worse, Jemalloc has a significant number of global
variables. Making all eligible global variables `static` and/or `const`
at least makes it slightly easier to reason about them, as these
qualifications communicate to the programmer restrictions on their use
without having to `grep` the whole codebase.
2023-07-06 14:15:12 -07:00
Qi Wang
602edd7566 Enabled -Wstrict-prototypes and fixed warnings. 2023-07-06 12:00:02 -07:00
Kevin Svetlitski
ebd7e99f5c Add a test-case for small profiled allocations
Validate that small allocations (i.e. those with `size <= SC_SMALL_MAXCLASS`)
which are sampled for profiling maintain the expected invariants even
though they now take up less space.
2023-07-03 16:19:06 -07:00
Kevin Svetlitski
e1338703ef Address compiler warnings in the unit tests 2023-07-03 16:06:35 -07:00
Qi Wang
d131331310 Avoid eager purging on the dedicated oversize arena when using bg thds.
We have observed new workload patterns (namely ML training type) that cycle
through oversized allocations frequently, because 1) the dataset might be sparse
which is faster to go through, and 2) GPU accelerated.  As a result, the eager
purging from the oversize arena becomes a bottleneck.  To offer an easy
solution, allow normal purging of the oversized extents when background threads
are enabled.
2023-06-27 11:57:41 -07:00
Kevin Svetlitski
f2e00d2fd3 Remove trailing whitespace
Additionally, added a GitHub Action to ensure no more trailing
whitespace will creep in again in the future.

I'm excluding Markdown files from this check, since trailing whitespace
is significant there, and also excluding `build-aux/install-sh` because
there is significant trailing whitespace on the line that sets
`defaultIFS`.
2023-06-23 11:58:18 -07:00
Qi Wang
d4a2b8bab1 Add the prof_sys_thread_name feature in the prof_recent unit test.
This tests the combination of the prof_recent and thread_name features.
Verified that it catches the issue being fixed in this PR.

Also explicitly set thread name in test/unit/prof_recent.  This fixes the name
testing when no default thread name is set (e.g. FreeBSD).
2023-05-11 09:10:57 -07:00
Kevin Svetlitski
70344a2d38 Make eligible functions static
The codebase is already very disciplined in making any function which
can be `static`, but there are a few that appear to have slipped through
the cracks.
2023-05-08 15:00:02 -07:00
Qi Wang
434a68e221 Disallow decay during reentrancy.
Decay should not be triggered during reentrant calls (may cause lock order
reversal / deadlocks).  Added a delay_trigger flag to the tickers to bypass
decay when rentrancy_level is not zero.
2023-04-05 10:16:37 -07:00
Qi Wang
ce0b7ab6c8 Inline the storage for thread name in prof_tdata_t.
The previous approach managed the thread name in a separate buffer, which causes
races because the thread name update (triggered by new samples) can happen at
the same time as prof dumping (which reads the thread names) -- these two
operations are under separate locks to avoid blocking each other.  Implemented
the thread name storage as part of the tdata struct, which resolves the lifetime
issue and also avoids internal alloc / dalloc during prof_sample.
2023-04-05 10:03:12 -07:00
Qi Wang
6cab460a45 Add a multithreaded test for prof_sys_thread_name.
Verified that this catches the issue being fixed in 5fd5583.
2023-04-05 10:03:12 -07:00
Qi Wang
8b64be3441 Explicit arena assignment in test_tcache_max.
Otherwise the associated arena could change with percpu arena enabled.
2023-03-22 15:16:43 -07:00
Qi Wang
8e7353a19b Explicit arena assignment in test_thread_idle.
Otherwise the associated arena could change with percpu arena enabled.
2023-03-22 15:16:43 -07:00
Qi Wang
71bc1a3d91 Avoid assuming the arena id in test when percpu_arena is used. 2023-03-13 10:50:10 -07:00
guangli-dai
09e4b38fb1 Use asm volatile during benchmarks. 2023-02-24 11:17:48 -08:00
Qi Wang
97b313c7d4 More conservative setting for /test/unit/background_thread_enable.
Lower the thread and arena count to avoid resource exhaustion on 32-bit.
2023-02-16 14:42:21 -08:00
Qi Wang
8580c65f81 Implement prof sample hooks "experimental.hooks.prof_sample(_free)".
The added hooks hooks.prof_sample and hooks.prof_sample_free are intended to
allow advanced users to track additional information, to enable new ways of
profiling on top of the jemalloc heap profile and sample features.

The sample hook is invoked after the allocation and backtracing, and forwards
the both the allocation and backtrace to the user hook; the sample_free hook
happens before the actual deallocation, and forwards only the ptr and usz to the
hook.
2022-12-07 16:06:49 -08:00
guangli-dai
a74acb57e8 Fix dividing 0 error in stress/cpp/microbench
Summary:
Per issue #2356, some CXX compilers may optimize away the
new/delete operation in stress/cpp/microbench.cpp.
Thus, this commit (1) bumps the time interval to 1 if it is 0, and
(2) modifies the pointers in the microbench to volatile.
2022-12-06 10:46:14 -08:00
Guangli Dai
e8f9f13811 Inline free and sdallocx into operator delete 2022-11-21 11:14:05 -08:00
guangli-dai
06374d2a6a Benchmark operator delete
Added the microbenchmark for operator delete.
Also modified bench.h so that it can be used in C++.
2022-11-21 11:14:05 -08:00
guangli-dai
14ad8205bf Update the ratio display in benchmark
In bench.h, specify the ratio as the time consumption ratio and
modify the display of the ratio.
2022-11-21 11:14:05 -08:00
Qi Wang
143e9c4a2f Enable fast thread locals for dealloc-only threads.
Previously if a thread does only allocations, it stays on the slow path /
minimal initialized state forever.  However, dealloc-only is a valid pattern for
dedicated reclamation threads -- this means thread cache is disabled (no batched
flush) for them, which causes high overhead and contention.

Added the condition to fully initialize TSD when a fair amount of dealloc
activities are observed.
2022-10-25 09:54:38 -07:00
Guangli Dai
c9ac1f4701 Fix a bug in C++ integration test. 2022-09-16 15:04:59 -07:00
Guangli Dai
ba19d2cb78 Add arena-level name.
An arena-level name can help identify manual arenas.
2022-09-16 15:04:59 -07:00
Guangli Dai
a0734fd6ee Making jemalloc max stack depth a runtime option 2022-09-12 13:56:22 -07:00
Guangli Dai
42daa1ac44 Add double free detection using slab bitmap for debug build
Add a sanity check for double free issue in the arena in case that the tcache has been flushed.
2022-09-06 12:54:21 -07:00
Ivan Zaitsev
36366f3c4c Add double free detection in thread cache for debug build
Add new runtime option `debug_double_free_max_scan` that specifies the max
number of stack entries to scan in the cache bit when trying to detect the
double free bug (currently debug build only).
2022-08-04 16:58:22 -07:00
Alex Lapenkou
5b1f2cc5d7 Implement pvalloc replacement
Despite being an obsolete function, pvalloc is still present in GLIBC and should
work correctly when jemalloc replaces libc allocator.
2022-05-18 17:01:09 -07:00
Qi Wang
cd5aaf308a Improve the failure message upon opt_experimental_infallible_new. 2022-05-17 16:07:40 -07:00
Qi Wang
66c889500a Make test/unit/background_thread_enable more conservative.
To avoid resource exhaustion on 32-bit platforms.
2022-05-04 15:32:57 -07:00
Qi Wang
391bad4b95 Avoid abort() in test/integration/cpp/infallible_new_true.
Allow setting the safety check abort hook through mallctl, which avoids abort()
and core dumps.
2022-04-25 11:29:32 -07:00
cuishuang
9a242f16d9 fix some typos
Signed-off-by: cuishuang <imcusg@gmail.com>
2022-04-25 11:29:00 -07:00
Qi Wang
0e29ad4efa Rename zero_realloc option "strict" to "alloc".
With realloc(ptr, 0) being UB per C23, the option name "strict" makes less sense
now.  Rename to "alloc" which describes the behavior.
2022-04-20 10:27:25 -07:00
Qi Wang
ed5fc14b28 Use volatile to workaround buffer overflow false positives.
In test/integration/rallocx, full usable size is checked which may confuse
overflow detection.
2022-04-04 12:16:46 -07:00
Charles
eaaa368bab Add comments and use meaningful vars in sz_psz2ind. 2022-03-24 16:56:59 -07:00
Alex Lapenkou
52631c90f6 Fix size class calculation for sec
Due to a bug in sec initialization, the number of cached size classes
was equal to 198. The bug caused the creation of more than a hundred of
unused bins, although it didn't affect the caching logic.
2022-03-22 17:45:55 -07:00
Qi Wang
20f9802e4f Avoid overflow warnings in test/unit/safety_check. 2022-01-27 10:29:54 -08:00
yunxu
b798fabdf7 Add prof_leak_error option
The option makes the process to exit with error code 1 if a memory leak
is detected. This is useful for implementing automated tools that rely
on leak detection.
2022-01-21 16:24:20 -08:00
Qi Wang
648b3b9f76 Lower the num_threads in the stress test of test/unit/prof_recent
This takes a fair amount of resources.  Under high concurrency it was causing
resource exhaustion such as pthread_create and mmap failures.
2022-01-11 16:58:56 -08:00
Qi Wang
6230cc88b6 Add background thread sleep retry in test/unit/hpa_background_thread
Under high concurrency / heavy test load (e.g. using run_tests.sh), the
background thread may not get scheduled for a longer period of time.  Retry 100
times max before bailing out.
2022-01-07 10:28:28 -08:00
Qi Wang
d660683d3d Fix test config of lg_san_uaf_align.
The option may be configure-disabled, which resulted in the invalid options
output from the tests.
2022-01-04 11:03:51 -08:00
Qi Wang
dfdd7562f5 Rename san_enabled() to san_guard_enabled(). 2021-12-29 14:44:43 -08:00
Qi Wang
e491cef9ab Add stats for stashed bytes in tcache. 2021-12-29 14:44:43 -08:00
Qi Wang
b75822bc6e Implement use-after-free detection using junk and stash.
On deallocation, sampled pointers (specially aligned) get junked and stashed
into tcache (to prevent immediate reuse).  The expected behavior is to have
read-after-free corrupted and stopped by the junk-filling, while
write-after-free is checked when flushing the stashed pointers.
2021-12-29 14:44:43 -08:00
Qi Wang
d038160f3b Fix shadowed variable usage.
Verified with EXTRA_CFLAGS=-Wshadow.
2021-12-23 10:55:08 -08:00
Qi Wang
bd70d8fc0f Add the profiling settings for tests explicit.
Many profiling related tests make assumptions on the profiling settings,
e.g. opt_prof is off by default, and prof_active is default on when opt_prof is
on.  However the default settings can be changed via --with-malloc-conf at build
time.  Fixing the tests by adding the assumed settings explicitly.
2021-12-22 20:10:28 -08:00
Qi Wang
837b37c4ce Fix the time-since computation in HPA.
nstime module guarantees monotonic clock update within a single nstime_t.  This
means, if two separate nstime_t variables are read and updated separately,
nstime_subtract between them may result in underflow.  Fixed by switching to the
time since utility provided by nstime.
2021-12-21 23:37:22 -08:00
Qi Wang
310af725b0 Add nstime_ns_since which obtains the duration since the input time. 2021-12-21 23:37:22 -08:00