diff options
Diffstat (limited to 'include/apos/tcb.h')
| -rw-r--r-- | include/apos/tcb.h | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/include/apos/tcb.h b/include/apos/tcb.h index 0368957..9ed916f 100644 --- a/include/apos/tcb.h +++ b/include/apos/tcb.h @@ -28,7 +28,7 @@ * @param t Thread to check. * @return \c true if thread is in RPC, \c false otherwise. */ -#define is_rpc(t) (t->rid == t->pid) +#define is_rpc(t) (t->rid != t->pid) /** * Get the process thread of current thread. @@ -63,14 +63,14 @@ struct tcb_ctx { /** Enum for notification states. */ enum tcb_notify { + /** Thread is free to be notified. */ + NOTIFY_WAITING = 0, + /** Thread has notifcations queued. */ NOTIFY_QUEUED, /** Thread is running notification handler. */ NOTIFY_RUNNING, - - /** Thread is free to be notified. */ - NOTIFY_WAITING }; /** Thread control block. Main way to handle threads. */ @@ -133,6 +133,9 @@ struct tcb { /** Address of this thread's stack top. */ vm_t thread_stack_top; + /** Current address of usable rpc stack. */ + vm_t rpc_stack; + /** \todo Check if each thread should be allowed more than just one * region of thread local storage. */ /** Possible thread local storage. */ @@ -171,7 +174,7 @@ void destroy_tcbs(); * and the \ref tcb structure itself with a unique thread ID. If in a new * process context, a new process address space is created as well. * - * Userspace stack is allocated with \ref alloc_stacks(). + * Userspace stack is allocated with \ref alloc_stack(). * * \todo Thread local storage? * @@ -338,7 +341,7 @@ stat_t clone_rpc_maps(struct tcb *r); * @param t Thread whose stacks to allocate. * @return \ref OK on success, \ref ERR_OOMEM if out of memory. */ -stat_t alloc_stacks(struct tcb *t); +stat_t alloc_stack(struct tcb *t); /** * Set address to jump to when returning to userspace. @@ -356,4 +359,18 @@ void set_return(struct tcb *t, vm_t r); */ bool running(struct tcb *t); +/** + * Save thread context for rpc call. + * + * @param t Thread whose context to save. + */ +void save_context(struct tcb *t); + +/** + * Load thread context from rpc call. + * + * @param t Thread whose context to restore. + */ +void load_context(struct tcb *t); + #endif /* APOS_TCB_H */ |