diff options
Diffstat (limited to 'hurd')
| -rw-r--r-- | hurd/Makefile | 3 | ||||
| -rw-r--r-- | hurd/hurd.h | 4 | ||||
| -rw-r--r-- | hurd/thread-self.c | 26 |
3 files changed, 32 insertions, 1 deletions
diff --git a/hurd/Makefile b/hurd/Makefile index f5b36867a5..5e1622d87d 100644 --- a/hurd/Makefile +++ b/hurd/Makefile @@ -52,7 +52,8 @@ routines = hurdstartup hurdinit \ ports-get ports-set hurdports hurdmsg \ $(sig) $(dtable) hurdinline port-cleanup sig = hurdsig hurdfault faultexc siginfo hurd-raise preempt-sig \ - trampoline longjmp-ts catch-exc exc2signal hurdkill sigunwind + trampoline longjmp-ts catch-exc exc2signal hurdkill sigunwind \ + thread-self dtable = dtable port2fd new-fd alloc-fd intern-fd \ getdport openport \ fd-close fd-read fd-write hurdioctl ctty-input ctty-output diff --git a/hurd/hurd.h b/hurd/hurd.h index 968910fffb..e0ba62eede 100644 --- a/hurd/hurd.h +++ b/hurd/hurd.h @@ -281,6 +281,10 @@ extern pid_t __task2pid (task_t task), task2pid (task_t task); extern task_t __pid2task (pid_t pid), pid2task (pid_t pid); +/* Return the current thread's thread port. This is a cheap operation (no + system call), but it relies on Hurd signal state being set up. */ +extern thread_t hurd_thread_self (void); + /* Return the io server port for file descriptor FD. This adds a Mach user reference to the returned port. diff --git a/hurd/thread-self.c b/hurd/thread-self.c new file mode 100644 index 0000000000..ff0992ce68 --- /dev/null +++ b/hurd/thread-self.c @@ -0,0 +1,26 @@ +/* Cheap function to get current thread from sigstate without a syscall. +Copyright (C) 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 +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <hurd/signal.h> + +thread_t +hurd_thread_self (void) +{ + return _hurd_self_sigstate ()->thread; +} |