diff options
Diffstat (limited to 'libc/bionic/pthread_attr.cpp')
| -rw-r--r-- | libc/bionic/pthread_attr.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libc/bionic/pthread_attr.cpp b/libc/bionic/pthread_attr.cpp index be1c25228..7ad34311e 100644 --- a/libc/bionic/pthread_attr.cpp +++ b/libc/bionic/pthread_attr.cpp @@ -170,6 +170,11 @@ int pthread_attr_getguardsize(const pthread_attr_t* attr, size_t* guard_size) { int pthread_getattr_np(pthread_t t, pthread_attr_t* attr) { pthread_internal_t* thread = reinterpret_cast<pthread_internal_t*>(t); *attr = thread->attr; + // We prefer reading join_state here to setting thread->attr.flags in pthread_detach. + // Because data race exists in the latter case. + if (atomic_load(&thread->join_state) == THREAD_DETACHED) { + attr->flags |= PTHREAD_ATTR_FLAG_DETACHED; + } // The main thread's stack information is not stored in thread->attr, and we need to // collect that at runtime. if (thread->tid == getpid()) { |