diff options
Diffstat (limited to 'sysdeps/mach/pt-thread-alloc.c')
| -rw-r--r-- | sysdeps/mach/pt-thread-alloc.c | 31 |
1 files changed, 8 insertions, 23 deletions
diff --git a/sysdeps/mach/pt-thread-alloc.c b/sysdeps/mach/pt-thread-alloc.c index 794f63e..77aa933 100644 --- a/sysdeps/mach/pt-thread-alloc.c +++ b/sysdeps/mach/pt-thread-alloc.c @@ -67,44 +67,29 @@ create_wakeupmsg (struct __pthread *thread) int __pthread_thread_alloc (struct __pthread *thread) { - if (thread->have_kernel_resources) - return 0; - + static int do_create; error_t err; err = create_wakeupmsg (thread); if (err) return err; - /* If there are no pthreads in the system then the pthread library - is bootstrapping and the main thread must create initialize - itself. The thread itself is already running, it just has not - pthread context. We want to reuse what it already has (including - the kernel thread), however, we must determine which thread is - the main thread. - - We cannot test if __pthread_total is one as we later decrement - before creating the signal thread. Currently, we check if - __pthread_num_threads--the number of allocated thread - structures--is one. __pthread_alloc has already been called in - __pthread_create_internal for us. This predicate could be improved, - however, it is sufficient for now. */ - if (__pthread_num_threads == 1) + if (! do_create) { assert (__pthread_total == 0); thread->kernel_thread = __mach_thread_self (); - /* We implicitly hold a reference drop the one that we just - acquired. */ - __mach_port_deallocate (__mach_task_self (), thread->kernel_thread); + do_create = 1; } else { err = __thread_create (__mach_task_self (), &thread->kernel_thread); if (err) - return EAGAIN; + { + __mach_port_destroy (__mach_task_self (), + thread->wakeupmsg.msgh_remote_port); + return EAGAIN; + } } - thread->have_kernel_resources = 1; - return 0; } |