diff options
| -rw-r--r-- | libports/inhibit-all-rpcs.c | 59 |
1 files changed, 37 insertions, 22 deletions
diff --git a/libports/inhibit-all-rpcs.c b/libports/inhibit-all-rpcs.c index 55076486..13aa62c6 100644 --- a/libports/inhibit-all-rpcs.c +++ b/libports/inhibit-all-rpcs.c @@ -1,5 +1,5 @@ /* - Copyright (C) 1995 Free Software Foundation, Inc. + Copyright (C) 1995, 1996 Free Software Foundation, Inc. Written by Michael I. Bushnell. This file is part of the GNU Hurd. @@ -23,37 +23,52 @@ #include <cthreads.h> #include <hurd/ihash.h> -void +error_t ports_inhibit_all_rpcs () { - struct port_bucket *bucket; - int this_one = 0; - error_t interruptor (void *portstruct) + error_t err = 0; + + mutex_lock (&_ports_lock); + + if (_ports_flags & (_PORTS_INHIBITED | _PORTS_INHIBIT_WAIT)) + err = EBUSY; + else { - struct port_info *pi = portstruct; - struct rpc_info *rpc; + struct port_bucket *bucket; + int this_one = 0; + error_t interruptor (void *portstruct) + { + struct rpc_info *rpc; + struct port_info *pi = portstruct; - for (rpc = pi->current_rpcs; rpc; rpc = rpc->next) - if (hurd_thread_cancel (rpc->thread) == EINTR) - this_one = 1; - return 0; - } + for (rpc = pi->current_rpcs; rpc; rpc = rpc->next) + if (hurd_thread_cancel (rpc->thread) == EINTR) + this_one = 1; + return 0; + } - mutex_lock (&_ports_lock); + for (bucket = _ports_all_buckets; bucket; bucket = bucket->next) + ihash_iterate (bucket->htable, interruptor); - for (bucket = _ports_all_buckets; bucket; bucket = bucket->next) - ihash_iterate (bucket->htable, interruptor); + while (_ports_total_rpcs > this_one) + { + _ports_flags |= _PORTS_INHIBIT_WAIT; + if (hurd_condition_wait (&_ports_block, &_ports_lock)) + /* We got cancelled. */ + { + err = EINTR; + break; + } + } - while (_ports_total_rpcs > this_one) - { - _ports_flags |= _PORTS_INHIBIT_WAIT; - condition_wait (&_ports_block, &_ports_lock); + _ports_flags &= ~_PORTS_INHIBIT_WAIT; + if (! err) + _ports_flags |= _PORTS_INHIBITED; } - _ports_flags |= _PORTS_INHIBITED; - _ports_flags &= ~_PORTS_INHIBIT_WAIT; - mutex_unlock (&_ports_lock); + + return err; } |