libs/os/src/os.c

/**
 * Copyright (c) 2015 Runtime Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "os/os.h"
#include "os/queue.h"

#include <assert.h> 

struct os_task g_idle_task; 
os_stack_t g_idle_task_stack[OS_STACK_ALIGN(OS_IDLE_STACK_SIZE)];

uint32_t g_os_idle_ctr;
/* Default zero.  Set by the architecture specific code when os is started.
 */
int g_os_started; 


void
os_idle_task(void *arg)
{
    /* For now, idle task simply increments a counter to show it is running. */
    while (1) {
        ++g_os_idle_ctr;
    }
}

int 
os_started(void) 
{
    return (g_os_started);
}


void
os_init_idle_task(void)
{
    os_task_init(&g_idle_task, "idle", os_idle_task, NULL, 
            OS_IDLE_PRIO, OS_WAIT_FOREVER, g_idle_task_stack, 
            OS_STACK_ALIGN(OS_IDLE_STACK_SIZE));
}

void
os_init(void)
{
    os_error_t err;

    err = os_arch_os_init();
    assert(err == OS_OK);

    err = os_info_init();
    assert(err == OS_OK);
}

void
os_start(void)
{
    os_error_t err;

    err = os_arch_os_start();
    assert(err == OS_OK);
}