diff options
Diffstat (limited to 'kern/sched_prim.c')
| -rw-r--r-- | kern/sched_prim.c | 41 |
1 files changed, 24 insertions, 17 deletions
diff --git a/kern/sched_prim.c b/kern/sched_prim.c index b17e612..b3c60ad 100644 --- a/kern/sched_prim.c +++ b/kern/sched_prim.c @@ -1,25 +1,25 @@ -/* +/* * Mach Operating System * Copyright (c) 1993-1987 Carnegie Mellon University * All Rights Reserved. - * + * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. - * + * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. - * + * * Carnegie Mellon requests users of this software to return to - * + * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 - * + * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ @@ -99,7 +99,7 @@ void thread_check(thread_t, run_queue_t); * S suspended (or will suspend) * N non-interruptible * - * init action + * init action * assert_wait thread_block clear_wait suspend resume * * R RW, RWN R; setrun - RS - @@ -202,7 +202,7 @@ void thread_timeout( * is ready to wait. Must be called between assert_wait() * and thread_block(). */ - + void thread_set_timeout( int t) /* timeout interval in ticks */ { @@ -382,6 +382,13 @@ void clear_wait( splx(s); } +static inline void __attribute__((noreturn)) +state_panic(thread_t thread, const char *caller) +{ + panic ("%s: thread %x has unexpected state %x", + caller, thread, thread->state); +} + /* * thread_wakeup_prim: * @@ -448,7 +455,7 @@ void thread_wakeup_prim( break; default: - panic("thread_wakeup"); + state_panic(thread, "thread_wakeup"); break; } thread_unlock(thread); @@ -733,7 +740,7 @@ boolean_t thread_invoke( break; default: - panic("thread_invoke"); + state_panic(old_thread, "thread_invoke"); } thread_unlock(old_thread); after_old_thread: @@ -879,7 +886,7 @@ void thread_block( recover_ras(thread); } #endif /* FAST_TAS */ - + ast_off(cpu_number(), AST_BLOCK); do @@ -982,7 +989,7 @@ void thread_dispatch( break; default: - panic("thread_dispatch"); + state_panic(thread, "thread_dispatch"); } thread_unlock(thread); } @@ -1046,7 +1053,7 @@ shift_data_t wait_shift[32] = { * Take the base priority for this thread and add * to it an increment derived from its cpu_usage. * - * The thread *must* be locked by the caller. + * The thread *must* be locked by the caller. */ void compute_priority( @@ -1123,7 +1130,7 @@ void recompute_priorities(void) /* * update_priority * - * Cause the priority computation of a thread that has been + * Cause the priority computation of a thread that has been * sleeping or suspended to "catch up" with the system. Thread * *MUST* be locked by caller. If thread is running, then this * can only be called by the thread on itself. @@ -1681,7 +1688,7 @@ void idle_thread_continue(void) ast_taken(); /* back at spl0 */ } - + /* * machine_idle is a machine dependent function, * to conserve power. @@ -2005,7 +2012,7 @@ void do_thread_scan(void) } } while (restart_needed); } - + #if DEBUG void checkrq( run_queue_t rq, @@ -2027,7 +2034,7 @@ void checkrq( else { if (low == -1) low = i; - + for (e = q1->next; e != q1; e = e->next) { j++; if (e->next->prev != e) |