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authorRoland McGrath <roland@gnu.org>1995-08-14 22:49:23 +0000
committerRoland McGrath <roland@gnu.org>1995-08-14 22:49:23 +0000
commit54da5be39c868b55c234c23bb38eb42babc084d7 (patch)
tree64fe7cd0dfeaef3a8b6f469f3a7a83a3a974067a /hurd/hurd.h
parent047f282dd7e83f24abce284dcc9d2d78cab42f9b (diff)
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Mon Aug 14 16:51:13 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* hurd/thread-cancel.c: New file. * sysdeps/mach/hurd/i386/trampoline.c (_hurd_setup_sighandler): In rpc_wait case, frob mach_msg args to set timeout on receive. (_hurdsig_rcv_interrupted_p): Function removed. * sysdeps/mach/hurd/alpha/trampoline.c: Likewise. * sysdeps/mach/hurd/hppa/trampoline.c: Likewise. * sysdeps/mach/hurd/mips/trampoline.c: Likewise. * hurd/intr-msg.c: New file. * hurd/hurd/signal.h (struct hurd_sigstate): New member `cancel'. (_hurdsig_rcv_interrupted_p): Declaration removed. (HURD_EINTR_RPC): Macro removed. (_hurd_longjmp_thread_state, _hurd_interrupted_rpc_timeout): Declare these. * hurd/intr-rpc.h: New file. * hurd/intr-rpc.defs: Just import intr-rpc.h. * hurd/hurdsig.c (_hurd_interrupted_rpc_timeout): New variable. (interrupted_reply_port_location): Take new flag arg; only catch faults if it's set. (abort_rpcs): Rename to _hurdsig_abort_rpcs; take same new flag arg. No longer use _hurdsig_rcv_interrupted_p; instead compare PC to &_hurd_intr_rpc_msg_in_trap. If before it, mutate state to simulate MACH_SEND_INTERRUPTED return; on it, interrupt the operation. All callers changed. * hurd/hurd.h (hurd_thread_cancel, hurd_check_cancel): Declare these. * hurd/Makefile (distribute): Remove intr-rpc.awk. (sig): Add thread-cancel. (transform-user-stub, transform-user-stub-output): Variables removed. * sysdeps/mach/hurd/dl-sysdep.c: Change all RPCs from `__hurd_intr_rpc_*' to `__*'. (_hurd_intr_rpc_mach_msg): New function. (_hurd_thread_sigstate): Function removed. * sysdeps/mach/hurd/ioctl.c: Use _hurd_intr_rpc_mach_msg function, instead of __mach_msg inside HURD_EINTR_RPC macro. * sysdeps/generic/morecore.c [__GNU_LIBRARY__]: Declare `__sbrk' to take ptrdiff_t arg. * sysdeps/mach/hurd/fork.c: Remove _hurd_longjmp_thread_state decl. * sysdeps/mach/hurd/kill.c (kill_pid): Don't make `inline'. * libc-symbols.h [GCC >= 2.7] (strong_alias, weak_symbol, weak_alias): Use `extern' storage class.
Diffstat (limited to 'hurd/hurd.h')
-rw-r--r--hurd/hurd.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/hurd/hurd.h b/hurd/hurd.h
index e0ba62eede..1b4db17efe 100644
--- a/hurd/hurd.h
+++ b/hurd/hurd.h
@@ -286,6 +286,16 @@ extern task_t __pid2task (pid_t pid), pid2task (pid_t pid);
extern thread_t hurd_thread_self (void);
+/* Cancel pending operations on THREAD. If it is doing an interruptible RPC,
+ that RPC will now return EINTR; otherwise, the "cancelled" flag will be
+ set, causing the next `hurd_check_cancel' call to return nonzero or the
+ next interruptible RPC to return EINTR (whichever is called first). */
+extern error_t hurd_thread_cancel (thread_t thread);
+
+/* Test and clear the calling thread's "cancelled" flag. */
+extern int hurd_check_cancel (void);
+
+
/* Return the io server port for file descriptor FD.
This adds a Mach user reference to the returned port.
On error, sets `errno' and returns MACH_PORT_NULL. */