diff options
Diffstat (limited to 'extras/mini-os/sched.c')
| -rw-r--r-- | extras/mini-os/sched.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/extras/mini-os/sched.c b/extras/mini-os/sched.c index 18b3f01538..19a102f056 100644 --- a/extras/mini-os/sched.c +++ b/extras/mini-os/sched.c @@ -56,6 +56,7 @@ struct thread *idle_thread = NULL; LIST_HEAD(exited_threads); +static int threads_started; void inline print_runqueue(void) { @@ -172,6 +173,9 @@ struct thread* create_thread(char *name, void (*function)(void *), void *data) /* Not runable, not exited, not sleeping */ thread->flags = 0; thread->wakeup_time = 0LL; +#ifdef HAVE_LIBC + _REENT_INIT_PTR((&thread->reent)) +#endif set_runnable(thread); local_irq_save(flags); if(idle_thread != NULL) { @@ -185,6 +189,42 @@ struct thread* create_thread(char *name, void (*function)(void *), void *data) return thread; } +#ifdef HAVE_LIBC +static struct _reent callback_reent; +struct _reent *__getreent(void) +{ + struct _reent *_reent; + + if (!threads_started) + _reent = _impure_ptr; + else if (in_callback) + _reent = &callback_reent; + else + _reent = &get_current()->reent; + +#ifndef NDEBUG +#if defined(__x86_64__) || defined(__x86__) + { +#ifdef __x86_64__ + register unsigned long sp asm ("rsp"); +#else + register unsigned long sp asm ("esp"); +#endif + if ((sp & (STACK_SIZE-1)) < STACK_SIZE / 16) { + static int overflowing; + if (!overflowing) { + overflowing = 1; + printk("stack overflow\n"); + BUG(); + } + } + } +#endif +#endif + return _reent; +} +#endif + void exit_thread(void) { unsigned long flags; @@ -228,6 +268,7 @@ void wake(struct thread *thread) void idle_thread_fn(void *unused) { s_time_t until; + threads_started = 1; unsigned long flags; struct list_head *iterator; struct thread *next, *thread; @@ -297,6 +338,9 @@ void init_sched(void) { printk("Initialising scheduler\n"); +#ifdef HAVE_LIBC + _REENT_INIT_PTR((&callback_reent)) +#endif idle_thread = create_thread("Idle", idle_thread_fn, NULL); INIT_LIST_HEAD(&idle_thread->thread_list); } |