diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | hurd/hurdsig.c | 20 |
2 files changed, 25 insertions, 1 deletions
@@ -1,3 +1,9 @@ +2018-03-17 Samuel Thibault <samuel.thibault@ens-lyon.org> + + * hurd/hurdsig.c: Include <pthread.h>. + (_hurdsig_init): Call pthread_getattr_np and pthread_attr_getstack to + get the signal thread stack layout. + 2018-03-16 Samuel Thibault <samuel.thibault@ens-lyon.org> * sysdeps/generic/thread_state.h (MACHINE_NEW_THREAD_STATE_FLAVOR): diff --git a/hurd/hurdsig.c b/hurd/hurdsig.c index 4f5bb9a8da..198546fbb3 100644 --- a/hurd/hurdsig.c +++ b/hurd/hurdsig.c @@ -20,6 +20,7 @@ #include <string.h> #include <cthreads.h> /* For `struct mutex'. */ +#include <pthread.h> #include <mach.h> #include <mach/thread_switch.h> @@ -1297,7 +1298,24 @@ _hurdsig_init (const int *intarray, size_t intarraysize) values all zero so they'll be ignored. */ #pragma weak cthread_fork #pragma weak cthread_detach - cthread_detach (cthread_fork ((cthread_fn_t) &_hurd_msgport_receive, 0)); +#pragma weak pthread_getattr_np +#pragma weak pthread_attr_getstack + cthread_t thread = cthread_fork ((cthread_fn_t) &_hurd_msgport_receive, + 0); + cthread_detach (thread); + + if (pthread_getattr_np) + { + /* Record signal thread stack layout for fork() */ + pthread_attr_t attr; + void *addr; + size_t size; + + pthread_getattr_np ((pthread_t) thread, &attr); + pthread_attr_getstack (&attr, &addr, &size); + __hurd_sigthread_stack_base = (uintptr_t) addr; + __hurd_sigthread_stack_end = __hurd_sigthread_stack_base + size; + } /* XXX We need the thread port for the signal thread further on in this thread (see hurdfault.c:_hurdsigfault_init). |