tools/valgrind/tsan/ignores.txt

# This file lists the functions, object files and source files
# which should be ignored (i.e. not instrumented) by ThreadSanitizer.
# See http://code.google.com/p/data-race-test/wiki/ThreadSanitizerIgnores.

# ignore these libraries
obj:*/libfreetype*
obj:*/libdbus*

# we ignore the whole NSS library for now since
# its instrumentation is very slow.
# TODO(timurrrr): investigate whether we need to instrument it
obj:*/libnss*
obj:*/nss/*

# ignore pulseaudio - We don't have symbols there and it can be slow otherwise
obj:*/libpulse*.so*

# ignore this standard stuff
fun:clone
fun:fork
fun:pthread_*
fun_r:_pthread_exit
fun_r:_pthread_free_pthread_onstack
fun_r:random_r
fun_r:random
fun_r:rand
fun_r:srand
fun:__new_exitfn
fun:_dl_*
fun:__dl_*
fun:*_setjmp*

# dark magic with 'errno' here.
fun:sys_*

# ignore libc's printf functions
fun_r:_IO_*
fun:fwrite
fun:fflush

# False reports on std::string internals, see
# http://code.google.com/p/data-race-test/issues/detail?id=40
fun:*_M_mutateE*
fun_r:*_M_set_length_and_sharable*
fun:*_M_is_leaked*
fun:*_M_is_shared*
fun:*_M_set_leaked*
fun:*_M_set_sharable*

# Don't instrument intercepts
src:*ts_valgrind_intercepts.c

##################################################################
# Don't instrument synchronization code
src:*base/threading/thread_local_storage*
src:*base/stats_counters*
src:*base/synchronization/condition_variable*
src:*base/synchronization/lock*
src:*base/synchronization/waitable_event*

# Don't instrument code dealing with atomics (base::subtle)
fun:*base*subtle*Release_Store*
fun:*base*subtle*NoBarrier_CompareAndSwap*
# Keep some mangling so we don't match NoBarrier_AtomicIncrement
fun:*base*subtle23Barrier_AtomicIncrement*

# Don't instrument tcmalloc
src:*/tcmalloc/*

# This function is heavy in net_unittests
fun_r:*disk_cache*BackendImpl*CheckAllEntries*

# V8 is a hot-spot under ThreadSanitizer.
# Lots of tiny functions there...
# TODO(timurrrr):
# Can we miss data races on V8 objects due to non thread-safe API calls
# if we don't instrument v8::internals?
fun_r:*v8*internal*

# unibrow namespace contains lots of tiny unicode conversion functions.
fun_hist:*unibrow*

# Histogram has tiny functions that can be called frequently
fun_hist:*Histogram*

# TODO(timurrrr): SKIA - needs separate testing?
# SKIA unittest is single-threaded...
# SKIA uses un-annotated atomic refcount and other sync stuff
# some functions are HEAVY like png, jpeg decoding
src:*third_party/skia*

# WebKit hotspot
fun:*png_write*

# This function generates 25% of memory accesses in net_unittests
fun:*icu_4_2*UnicodeSet*add*

# SQLite has lots of tiny functions and produce too many segments on some tests.
# See http://crbug.com/56511
fun_hist:*sqlite*

# There's some weird failure test going on in this tiny test function in sqlite
fun_r:threadLockingTest

# Ignore accesses below GetCurrentThreadIdentifier.
# There is a benign race which is hard to suppress properly,
# see http://crbug.com/44580
fun_r:*BrowserThread*GetCurrentThreadIdentifier*

# BrowserThread accesses MessageLoop::current() in ::CurrentlyOn.
# We can't use suppressions to hide these reports since the concurrent stack
# is simply "base::Thread::ThreadMain"
# See http://crbug.com/63678
fun_r:*BrowserThread*CurrentlyOn*

# zlib is smarter than we are, see http://www.zlib.net/zlib_faq.html#faq36
fun_r:inflate
# zlib-related reports, not investigated yet. See http://crbug.com/70932
fun_r:*remoting*CompressorZlib*Process*

# X11 reads the _XErrorFunction callback in a racey way, see
# http://crbug.com/65278
fun:XSetErrorHandler

fun:*IPC*Logging*Enable*
fun:*IPC*Logging*Disable*

# TSan doesn't support lockf and hence shared memory locks in this function;
# http://crbug.com/45083
fun_r:*base*StatsTable*AddCounter*

# TSan doesn't understand internal libc locks, see http://crbug.com/71435
fun_r:mbsrtowcs

# gethostbyname2_r is thread-safe, however ThreadSanitizer reports races inside it and
# (sometimes) in __nss_* functions below it.
# This may be related to
# https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/59449
fun_r:gethostbyname2_r*

# TODO(timurrrr): remove this when TSan is updated past r3232
fun_r:gaih_inet

# Strange reports below _IO_getline, every time in "Concurrent access".
# Probably the reports are there since we're missing the libc internal locks
fun_r:_IO_getline*

# A benign race in glib on something called "contention_counter". 
fun:g_slice_alloc

# A benign race in glibc on "random_time_bits".
fun:__gen_tempname

# The sqlite cache is racing against a few different stacktraces,
# so let's ignore it recursively. See http://crbug.com/84094
fun_r:pcache1Fetch

# "Suppress" a data race in TraceLog::GetCategory which has
# fun:MessageLoop::RunTask at the top of the "current" stack which we don't want
# to suppress. See http://crbug.com/98926
fun:*base*debug*TraceLog*GetCategoryInternal*