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* hurd/hurdfault.c (_hurdsig_fault_init): Set qlimit on

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FORWARD_SIGEXC to one.  Uncomment setting of thread exc port, and
 	move it to last thing.
This commit is contained in:
Roland McGrath
1996-02-12 10:00:30 +00:00
parent 808c413c90
commit 63f8940402
16 changed files with 23 additions and 169 deletions
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22
hurd/hurdfault.c
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@@ -113,6 +113,8 @@ _hurdsig_fault_init (void)
struct machine_thread_state state;
mach_port_t sigexc;
/* Allocate a port to receive signal thread exceptions.
We will move this receive right to the proc server. */
err = __mach_port_allocate (__mach_task_self (),
MACH_PORT_RIGHT_RECEIVE, &sigexc);
assert_perror (err);
@@ -120,16 +122,20 @@ _hurdsig_fault_init (void)
MACH_PORT_RIGHT_RECEIVE, &forward_sigexc);
assert_perror (err);
/* Allocate a port to receive the exception msgs forwarded
from the proc server. */
err = __mach_port_insert_right (__mach_task_self (), sigexc,
sigexc, MACH_MSG_TYPE_MAKE_SEND);
assert_perror (err);
#if 0 /* XXX gdb bites */
err = __thread_set_special_port (_hurd_msgport_thread,
THREAD_EXCEPTION_PORT, sigexc);
#endif
__mach_port_deallocate (__mach_task_self (), sigexc);
/* Set the queue limit for this port to just one. The proc server will
notice if we ever get a second exception while one remains queued and
unreceived, and decide we are hopelessly buggy. */
err = __mach_port_set_qlimit (__mach_task_self (), forward_sigexc, 1);
assert_perror (err);
/* This state will be restored when we fault.
It runs the function above. */
memset (&state, 0, sizeof state);
MACHINE_THREAD_STATE_SET_PC (&state, faulted);
MACHINE_THREAD_STATE_SET_SP (&state, faultstack, sizeof faultstack);
@@ -143,5 +149,11 @@ _hurdsig_fault_init (void)
(natural_t *) &state,
MACHINE_THREAD_STATE_COUNT));
assert_perror (err);
/* Direct signal thread exceptions to the proc server. */
err = __thread_set_special_port (_hurd_msgport_thread,
THREAD_EXCEPTION_PORT, sigexc);
__mach_port_deallocate (__mach_task_self (), sigexc);
assert_perror (err);
}