diff options
Diffstat (limited to 'nptl/nptl-printers.py')
| -rw-r--r-- | nptl/nptl-printers.py | 48 |
1 files changed, 23 insertions, 25 deletions
diff --git a/nptl/nptl-printers.py b/nptl/nptl-printers.py index 77018e7..9d67865 100644 --- a/nptl/nptl-printers.py +++ b/nptl/nptl-printers.py @@ -430,12 +430,10 @@ class RWLockPrinter(object): """ data = rwlock['__data'] - self.readers = data['__nr_readers'] - self.queued_readers = data['__nr_readers_queued'] - self.queued_writers = data['__nr_writers_queued'] - self.writer_id = data['__writer'] + self.readers = data['__readers'] + self.cur_writer = data['__cur_writer'] self.shared = data['__shared'] - self.prefers_writers = data['__flags'] + self.flags = data['__flags'] self.values = [] self.read_values() @@ -468,20 +466,19 @@ class RWLockPrinter(object): def read_status(self): """Read the status of the rwlock.""" - # Right now pthread_rwlock_destroy doesn't do anything, so there's no - # way to check if an rwlock is destroyed. - - if self.writer_id: - self.values.append(('Status', 'Locked (Write)')) - self.values.append(('Writer ID', self.writer_id)) - elif self.readers: - self.values.append(('Status', 'Locked (Read)')) - self.values.append(('Readers', self.readers)) + if self.readers & PTHREAD_RWLOCK_WRPHASE: + if self.readers & PTHREAD_RWLOCK_WRLOCKED: + self.values.append(('Status', 'Acquired (Write)')) + self.values.append(('Writer ID', self.cur_writer)) + else: + self.values.append(('Status', 'Not acquired')) else: - self.values.append(('Status', 'Unlocked')) - - self.values.append(('Queued readers', self.queued_readers)) - self.values.append(('Queued writers', self.queued_writers)) + r = self.readers >> PTHREAD_RWLOCK_READER_SHIFT + if r > 0: + self.values.append(('Status', 'Acquired (Read)')) + self.values.append(('Readers', r)) + else: + self.values.append(('Status', 'Not acquired')) def read_attributes(self): """Read the attributes of the rwlock.""" @@ -491,10 +488,12 @@ class RWLockPrinter(object): else: self.values.append(('Shared', 'No')) - if self.prefers_writers: + if self.flags == PTHREAD_RWLOCK_PREFER_READER_NP: + self.values.append(('Prefers', 'Readers')) + elif self.flags == PTHREAD_RWLOCK_PREFER_WRITER_NP: self.values.append(('Prefers', 'Writers')) else: - self.values.append(('Prefers', 'Readers')) + self.values.append(('Prefers', 'Writers no recursive readers')) class RWLockAttributesPrinter(object): """Pretty printer for pthread_rwlockattr_t. @@ -555,13 +554,12 @@ class RWLockAttributesPrinter(object): # PTHREAD_PROCESS_PRIVATE self.values.append(('Shared', 'No')) - if (rwlock_type == PTHREAD_RWLOCK_PREFER_READER_NP or - rwlock_type == PTHREAD_RWLOCK_PREFER_WRITER_NP): - # This is a known bug. Using PTHREAD_RWLOCK_PREFER_WRITER_NP will - # still make the rwlock prefer readers. + if rwlock_type == PTHREAD_RWLOCK_PREFER_READER_NP: self.values.append(('Prefers', 'Readers')) - elif rwlock_type == PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP: + elif rwlock_type == PTHREAD_RWLOCK_PREFER_WRITER_NP: self.values.append(('Prefers', 'Writers')) + else: + self.values.append(('Prefers', 'Writers no recursive readers')) def register(objfile): """Register the pretty printers within the given objfile.""" |