2 * Copyright © 2012 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
23 __xdata void *wchan; /* current wait channel (NULL if running) */
24 uint16_t alarm; /* abort ao_sleep time */
25 ao_arch_task_members /* any architecture-specific fields */
26 uint8_t task_id; /* unique id */
27 __code char *name; /* task name */
28 uint8_t stack[AO_STACK_SIZE]; /* saved stack */
31 extern __xdata struct ao_task *__data ao_cur_task;
33 #define AO_NUM_TASKS 16 /* maximum number of tasks */
34 #define AO_NO_TASK 0 /* no task id */
40 /* Suspend the current task until wchan is awoken.
46 ao_sleep(__xdata void *wchan);
48 /* Wake all tasks sleeping on wchan */
50 ao_wakeup(__xdata void *wchan);
52 /* set an alarm to go off in 'delay' ticks */
54 ao_alarm(uint16_t delay);
56 /* Clear any pending alarm */
60 /* Yield the processor to another task */
62 ao_yield(void) ao_arch_naked_declare;
64 /* Add a task to the run queue */
66 ao_add_task(__xdata struct ao_task * task, void (*start)(void), __code char *name) __reentrant;
68 /* Terminate the current task */
72 /* Dump task info to console */
76 /* Start the scheduler. This will not return */
78 ao_start_scheduler(void);