1 /* 2 * Copyright 2002-2007, Axel Dörfler, axeld@pinc-software.de. 3 * Distributed under the terms of the MIT License. 4 * 5 * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved. 6 * Distributed under the terms of the NewOS License. 7 */ 8 #ifndef _THREAD_H 9 #define _THREAD_H 10 11 12 #include <OS.h> 13 #include <thread_types.h> 14 #include <arch/thread.h> 15 16 struct kernel_args; 17 struct select_info; 18 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 void thread_enqueue(struct thread *t, struct thread_queue *q); 25 struct thread *thread_lookat_queue(struct thread_queue *q); 26 struct thread *thread_dequeue(struct thread_queue *q); 27 struct thread *thread_dequeue_id(struct thread_queue *q, thread_id id); 28 29 void thread_at_kernel_entry(bigtime_t now); 30 // called when the thread enters the kernel on behalf of the thread 31 void thread_at_kernel_exit(void); 32 void thread_at_kernel_exit_no_signals(void); 33 void thread_reset_for_exec(void); 34 35 status_t thread_init(struct kernel_args *args); 36 status_t thread_preboot_init_percpu(struct kernel_args *args, int32 cpuNum); 37 void thread_yield(bool force); 38 void thread_exit(void); 39 40 int32 thread_max_threads(void); 41 int32 thread_used_threads(void); 42 43 #define thread_get_current_thread arch_thread_get_current_thread 44 45 struct thread *thread_get_thread_struct(thread_id id); 46 struct thread *thread_get_thread_struct_locked(thread_id id); 47 48 static thread_id thread_get_current_thread_id(void); 49 static inline thread_id 50 thread_get_current_thread_id(void) 51 { 52 struct thread *thread = thread_get_current_thread(); 53 return thread ? thread->id : 0; 54 } 55 56 static inline bool 57 thread_is_idle_thread(struct thread *thread) 58 { 59 return thread->entry == NULL; 60 } 61 62 thread_id allocate_thread_id(void); 63 thread_id peek_next_thread_id(void); 64 65 thread_id spawn_kernel_thread_etc(thread_func, const char *name, int32 priority, 66 void *args, team_id team, thread_id threadID); 67 status_t wait_for_thread_etc(thread_id id, uint32 flags, bigtime_t timeout, 68 status_t *_returnCode); 69 70 status_t select_thread(int32 object, struct select_info *info, bool kernel); 71 status_t deselect_thread(int32 object, struct select_info *info, bool kernel); 72 73 #define syscall_64_bit_return_value() arch_syscall_64_bit_return_value() 74 75 // used in syscalls.c 76 status_t _user_set_thread_priority(thread_id thread, int32 newPriority); 77 status_t _user_rename_thread(thread_id thread, const char *name); 78 status_t _user_suspend_thread(thread_id thread); 79 status_t _user_resume_thread(thread_id thread); 80 status_t _user_rename_thread(thread_id thread, const char *name); 81 thread_id _user_spawn_thread(thread_entry_func entry, const char *name, int32 priority, void *arg1, void *arg2); 82 status_t _user_wait_for_thread(thread_id id, status_t *_returnCode); 83 status_t _user_snooze_etc(bigtime_t timeout, int timebase, uint32 flags); 84 status_t _user_kill_thread(thread_id thread); 85 void _user_thread_yield(void); 86 void _user_exit_thread(status_t return_value); 87 bool _user_has_data(thread_id thread); 88 status_t _user_send_data(thread_id thread, int32 code, const void *buffer, size_t buffer_size); 89 status_t _user_receive_data(thread_id *_sender, void *buffer, size_t buffer_size); 90 thread_id _user_find_thread(const char *name); 91 status_t _user_get_thread_info(thread_id id, thread_info *info); 92 status_t _user_get_next_thread_info(team_id team, int32 *cookie, thread_info *info); 93 94 // ToDo: these don't belong here 95 struct rlimit; 96 int _user_getrlimit(int resource, struct rlimit * rlp); 97 int _user_setrlimit(int resource, const struct rlimit * rlp); 98 99 #ifdef __cplusplus 100 } 101 #endif 102 103 #endif /* _THREAD_H */ 104