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# FIXME 22 Jan 09: helgrind-glibc2X-005 overlaps with a lot of
# other stuff. They should be removed.
##----------------------------------------------------------------------##
# Suppressions for the Helgrind tool when using
# a glibc-2.{3,4,5,6,7,8,9} system
####################################################
# glibc-2.X specific
# These are generic cover-alls which catch a lot of stuff
# in various combinations of ld, libc and libpthread
#
# Note this is heavyhanded and not very clever:
#
# - suppress anything that has its top frame in ld.so
# That's fine, since it's mostly dynamic linking stuff,
# which has various deliberate (harmless) races
#
# - suppress anything that has its top frame in libc.so.
# This really isn't clever, since it could hide some
# legitimate races. But the problem is, if we don't do
# this, then loads of errors to do with stdio are reported, because
# H fails to see glibc's internal locking/unlocking of FILE*s
# as required by POSIX. A better solution is needed.
#{
# helgrind-glibc2X-001
# Helgrind:Race
# obj:/lib*/ld-2.*so*
#}
# helgrind-glibc2X-002 was merged into helgrind-glibc2X-001
# helgrind-glibc2X-003 was merged into helgrind-glibc2X-001
{
helgrind-glibc2X-004
Helgrind:Race
obj:/lib*/libc-2.*so*
}
{
helgrind-glibc2X-005
Helgrind:Race
obj:/lib*/libpthread-2.*so*
}
# helgrind-glibc2X-006 was merged into helgrind-glibc2X-005
# helgrind-glibc2X-007 was merged into helgrind-glibc2X-001
# helgrind-glibc2X-008 was merged into helgrind-glibc2X-004
# helgrind-glibc2X-009 was merged into helgrind-glibc2X-004
# helgrind-glibc2X-010 was merged into helgrind-glibc2X-001
# helgrind-glibc2X-011 was merged into helgrind-glibc2X-004
# helgrind-glibc2X-012 was merged into helgrind-glibc2X-001
# helgrind-glibc2X-013 was merged into helgrind-glibc2X-001
# helgrind-glibc2X-014 was merged into helgrind-glibc2X-001
# helgrind-glibc2X-015 was merged into helgrind-glibc2X-004
# helgrind-glibc2X-016 was merged into helgrind-glibc2X-004
# These are very ugly. They are needed to suppress errors inside (eg)
# NPTL's pthread_cond_signal. Why only one stack frame -- at least we
# should see the wrapper calling the real functions, right?
# Unfortunately, no: the real functions are handwritten assembly (in
# the glibc-2.5 sources) and does not create a proper stack frame.
# Therefore it's only one level of unwinding before we're back out in
# user code rather than the 2 levels you'd expect.
{
helgrind-glibc2X-101
Helgrind:Race
obj:/lib*/libpthread-2.*so*
fun:pthread_*
}
{
helgrind-glibc2X-102
Helgrind:Race
fun:mythread_wrapper
obj:/lib*/libpthread-2.*so*
}
{
helgrind-glibc2X-103
Helgrind:Race
fun:pthread_cond_*@@GLIBC_2.*
}
{
helgrind-glibc2X-104
Helgrind:Race
fun:__lll_mutex_*
}
{
helgrind-glibc2X-105
Helgrind:Race
fun:pthread_rwlock_*lock*
}
{
helgrind-glibc2X-106
Helgrind:Race
fun:__lll_lock_wait
}
{
helgrind-glibc2X-107
Helgrind:Race
obj:/lib*/libpthread-2.*so*
fun:sem_*
}
{
helgrind-glibc2X-108
Helgrind:Race
fun:clone
}
{
helgrind-glibc2X-109
Helgrind:Race
fun:start_thread
}
{
helgrind-glibc2X-110
Helgrind:Race
obj:/lib*/libc-2.*so*
fun:pthread_*
}
{
helgrind-glibc2X-111
Helgrind:Race
fun:__lll_*lock_*
}
{
helgrind-glibc2X-113
Helgrind:Race
fun:pthread_barrier_wait*
}
####################################################
# qt4 specific (GNU mangling)
#
{
helgrind-qt4---QMutex::lock()-QMutex::lock()
Helgrind:Race
...
fun:_ZN6QMutex4lockEv
fun:_ZN6QMutex4lockEv
}
{
helgrind-qt4---QMutex::unlock()-QMutex::unlock()
Helgrind:Race
...
fun:_ZN6QMutex6unlockEv
fun:_ZN6QMutex6unlockEv
}
{
helgrind-qt4---pthread_setspecific-QThreadPrivate::start(void*)
Helgrind:Race
fun:pthread_setspecific
fun:_ZN14QThreadPrivate5startEPv
}
####################################################
# Other stuff.
#
# pthread_exit apparently calls some kind of unwind
# mechanism - maybe to remove some number of frames
# from the thread's stack, so as to get back to the
# outermost frame for the thread? Anyway..
{
helgrind---*Unwind*-...-pthread_exit
Helgrind:Race
fun:*Unwind*
...
fun:pthread_exit
}
{
helgrind---...-*Unwind*-*pthread_unwind*
Helgrind:Race
...
fun:*Unwind*
fun:*pthread_unwind*
}
{
helgrind---...-*Unwind*-*pthread_unwind*
Helgrind:Race
...
fun:_Unwind*
...
fun:_Unwind_Backtrace
}
####################################################
# To do with thread stack allocation and deallocation?
#
{
helgrind---free_stacks-__deallocate_stack
Helgrind:Race
fun:free_stacks
fun:__deallocate_stack
}
{
helgrind---__deallocate_stack-start_thread-clone
Helgrind:Race
fun:__deallocate_stack
fun:start_thread
fun:clone
}
####################################################
# To do with pthread_{set,get}specific
#
{
helgrind---pthread_setspecific
Helgrind:Race
fun:pthread_setspecific
}
{
helgrind---pthread_getspecific
Helgrind:Race
fun:pthread_getspecific
}
####################################################
# To do with dynamic linking
#
# helgrind---ld.so-...-dlsym was merged into helgrind-glibc2X-001
####################################################
# To do with GNU libgomp
#
{
helgrind---libgomp43-1
Helgrind:Race
fun:gomp_ordered_sync
}
{
helgrind---libgomp43-1
Helgrind:Race
fun:gomp_ordered_next
}
{
helgrind---libgomp43-1
Helgrind:Race
fun:gomp_ordered_last
}