Currently we use dlsym on pthread_cond_wait$UNIX2003 to find a
function that indicates that new_sem_from_pool is on the stack. This
works on 10.5, but on 10.6 I could not find a single reliable
indicator that would work with dlsym.
The good news is that dladdr works with any symbol, not just exported
ones. To find the address of new_sem_from_pool, we set up a malloc logger
and force a call to new_sem_from_pool. From the logger callback we walk
the stack trying dladdr on every address.
To force a call to new_sem_from_pool, the initialization code has to be the
first to use semaphores, so it is now run from NS_LogInit.
This works on 10.6 and 10.5 (but we have to look for
"pthread_cond_wait$UNIX2003"). In 10.7 the call to malloc is gone, so we don't
have to worry about critical addresses on it anymore.
--HG--
extra : rebase_source : bba4ac9e3378c88f7037aa884511e473a57121f6
Currently we use dlsym on pthread_cond_wait$UNIX2003 to find a
function that indicates that new_sem_from_pool is on the stack. This
works on 10.5, but on 10.6 I could not find a single reliable
indicator that would work with dlsym.
The good news is that dladdr works with any symbol, not just exported
ones. To find the address of new_sem_from_pool, we set up a malloc logger
and force a call to new_sem_from_pool. From the logger callback we walk
the stack trying dladdr on every address.
To for a call to new_sem_from_pool, the initialization code has to be the
first to use semaphores, so it is now run from NS_LogInit.
This works on 10.6 and 10.5 (but we have to look for
"pthread_cond_wait$UNIX2003"). In 10.7 the call to malloc is gone, so we don't
have to worry about critical addresses on it anymore.
dbaron.
The 64 bit stack walks lack the InCriticalRange functionality and it looks like
the extra walks are causing an orange on leaktest on the bot.
--HG--
extra : rebase_source : 4c0a75892e30a6e522ed981a1ff12df99d2a0464
This patch disables trace malloc stacks on OS X too. To make this work,
we still have to look on the stack to decide if we must set immediate_abort,
but we can avoid other work like decoding the addresses.
Bug 645263, part 0: Count sync primitive ctor/dtors. r=dbaron
Bug 645263, part 1: Migrate content/media to mozilla:: sync primitives. r=doublec
Bug 645263, part 2: Migrate modules/plugin to mozilla:: sync primitives. sr=bsmedberg
Bug 645263, part 3: Migrate nsComponentManagerImpl to mozilla:: sync primitives. sr=bsmedberg
Bug 645263, part 4: Migrate everything else to mozilla:: sync primitives. r=dbaron
Bug 645263, part 5: Remove nsAutoLock.*. sr=bsmedberg
Bug 645263, part 6: Make editor test be nicer to deadlock detector. r=ehsan
Bug 645263, part 7: Disable tracemalloc backtraces for xpcshell tests. r=dbaron
Bug 646259: Fix nsCacheService to use a CondVar for notifying. r=cjones
Bug 645263, part 0: Count sync primitive ctor/dtors. r=dbaron
Bug 645263, part 1: Migrate content/media to mozilla:: sync primitives. r=doublec
Bug 645263, part 2: Migrate modules/plugin to mozilla:: sync primitives. sr=bsmedberg
Bug 645263, part 3: Migrate nsComponentManagerImpl to mozilla:: sync primitives. sr=bsmedberg
Bug 645263, part 4: Migrate everything else to mozilla:: sync primitives. r=dbaron
Bug 645263, part 5: Remove nsAutoLock.*. sr=bsmedberg
Bug 645263, part 6: Make editor test be nicer to deadlock detector. r=ehsan
Bug 645263, part 7: Disable tracemalloc backtraces for xpcshell tests. r=dbaron
Bug 646259: Fix nsCacheService to use a CondVar for notifying. r=cjones
