diff options
Diffstat (limited to 'lib/libthr/thread/thr_create.c')
| -rw-r--r-- | lib/libthr/thread/thr_create.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/lib/libthr/thread/thr_create.c b/lib/libthr/thread/thr_create.c index 38e483f..c5ad8c9 100644 --- a/lib/libthr/thread/thr_create.c +++ b/lib/libthr/thread/thr_create.c @@ -99,9 +99,10 @@ _pthread_create(pthread_t * thread, const pthread_attr_t * attr, /* Initialise the machine context: */ getcontext(&new_thread->ctx); + new_thread->savedsig = new_thread->ctx.uc_sigmask; new_thread->ctx.uc_stack.ss_sp = new_thread->stack; new_thread->ctx.uc_stack.ss_size = pattr->stacksize_attr; - makecontext(&new_thread->ctx, _thread_start, 0); + makecontext(&new_thread->ctx, (void (*)(void))_thread_start, 1, new_thread); new_thread->arch_id = _set_curthread(&new_thread->ctx, new_thread, &ret); if (ret != 0) { if (pattr->stackaddr_attr == NULL) { @@ -145,7 +146,11 @@ _pthread_create(pthread_t * thread, const pthread_attr_t * attr, */ if (pattr->suspend == PTHREAD_CREATE_SUSPENDED) new_thread->flags |= PTHREAD_FLAGS_SUSPENDED; + /* new thread inherits signal mask in kernel */ + _thread_sigblock(); ret = thr_create(&new_thread->ctx, &new_thread->thr_id, flags); + /* restore my signal mask */ + _thread_sigunblock(); if (ret != 0) { _thread_printf(STDERR_FILENO, "thr_create() == %d\n", ret); PANIC("thr_create"); @@ -160,12 +165,24 @@ _pthread_create(pthread_t * thread, const pthread_attr_t * attr, } void -_thread_start(void) +_thread_start(pthread_t td) { + int ret; + + /* + * for AMD64, we need to set fsbase by thread itself, before + * fsbase is set, we can not run any other code, for example + * signal code. + */ + _set_curthread(NULL, td, &ret); + + /* restore signal mask inherited before */ + __sys_sigprocmask(SIG_SETMASK, &td->savedsig, NULL); + if ((curthread->flags & PTHREAD_FLAGS_SUSPENDED) != 0) _thread_suspend(curthread, NULL); - pthread_exit(curthread->start_routine(curthread->arg)); + pthread_exit(curthread->start_routine(curthread->arg)); /* This point should never be reached. */ PANIC("Thread has resumed after exit"); } |
