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(_hurd_setup_sighandler): In rpc_wait case, frob mach_msg args to set 

timeout on receive.
(_hurdsig_rcv_interrupted_p): Function removed.
This commit is contained in:
Roland McGrath 1995-08-14 22:19:38 +00:00
parent 4003d88d7b
commit b69e40a6f6
2 changed files with 13 additions and 74 deletions
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47
sysdeps/mach/hurd/alpha/trampoline.c
View File

@ -1,5 +1,5 @@
/* Set thread_state for sighandler, and sigcontext to recover. Alpha version.
Copyright (C) 1994 Free Software Foundation, Inc.
Copyright (C) 1994, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -160,6 +160,12 @@ _hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler,
calls we retry need only wait to receive the reply message. */
args->option &= ~MACH_SEND_MSG;
/* Limit the time to receive the reply message, in case the server
claimed that `interrupt_operation' succeeded but in fact the RPC
is hung. */
args->option |= MACH_RCV_TIMEOUT;
args->timeout = _hurd_interrupted_rpc_timeout;
state->basic.pc = (long int) &&rpc_wait_trampoline;
/* After doing the message receive, the trampoline code will need to
update the v0 ($0) value to be restored by sigreturn. To simplify
@ -245,42 +251,3 @@ _hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler,
/* NOTREACHED */
return NULL;
}
/* STATE describes a thread that had intr_port set (meaning it was inside
HURD_EINTR_RPC), after it has been thread_abort'd. If it looks to have
just completed a mach_msg_trap system call that returned
MACH_RCV_INTERRUPTED, return nonzero and set *PORT to the receive right
being waited on. */
int
_hurdsig_rcv_interrupted_p (struct machine_thread_all_state *state,
mach_port_t *port)
{
if (state->basic.r0 == MACH_RCV_INTERRUPTED)
{
const unsigned int *pc = (void *) state->basic.pc;
struct mach_msg_trap_args *args = (void *) &state->basic.r16;
if (_hurdsig_catch_fault (SIGSEGV))
{
assert (_hurdsig_fault_sigcode == (long int) (pc - 1) ||
_hurdsig_fault_sigcode == (long int) &args->rcv_name);
/* We got a fault trying to read the PC or stack. */
return 0;
}
else
{
if (pc[-1] == ((alpha_instruction) { pal_format:
{ opcode: op_pal,
function: op_chmk } }).bits)
{
/* We did just return from a mach_msg_trap system call
doing a message receive that was interrupted.
Examine the parameters to find the receive right. */
*port = args->rcv_name;
return 1;
}
}
}
return 0;
}

40
sysdeps/mach/hurd/hppa/trampoline.c
View File

@ -144,6 +144,12 @@ _hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler,
calls we retry need only wait to receive the reply message. */
args->option &= ~MACH_SEND_MSG;
/* Limit the time to receive the reply message, in case the server
claimed that `interrupt_operation' succeeded but in fact the RPC
is hung. */
args->option |= MACH_RCV_TIMEOUT;
args->timeout = _hurd_interrupted_rpc_timeout;
_hurdsig_end_catch_fault ();
MACHINE_THREAD_STATE_SET_PC (&state->basic, &&rpc_wait_trampoline);
@ -222,37 +228,3 @@ _hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler,
/* NOTREACHED */
return NULL;
}
/* STATE describes a thread that had intr_port set (meaning it was inside
HURD_EINTR_RPC), after it has been thread_abort'd. It it looks to have
just completed a mach_msg_trap system call that returned
MACH_RCV_INTERRUPTED, return nonzero and set *PORT to the receive right
being waited on. */
int
_hurdsig_rcv_interrupted_p (struct machine_thread_all_state *state,
mach_port_t *port)
{
const unsigned int *volatile pc
= MACHINE_THREAD_STATE_PC (&state->basic);
const mach_port_t *rcv_name
= (void *) state->r30 -32-20; /* VA_ARG4 from <mach/machine/asm.h>. */
if (_hurdsig_catch_fault (SIGSEGV))
assert (_hurdsig_fault_sigcode == (long int) pc ||
_hurdsig_fault_sigcode == (long int) rcv_name);
else
{
int rcving = (state->basic.r28 == MACH_RCV_INTERRUPTED &&
pc == ???unfinished???);
if (rcving)
/* We did just return from a mach_msg_trap system call
doing a message receive that was interrupted.
Examine the parameters to find the receive right. */
*port = *rcv_name;
_hurdsig_end_catch_fault ();
if (rcving)
return 1;
}
return 0;
}