AliOS 的LOＧ

基本参考的Android的代码

cmd : loglevel debug

#define LOG_IMPL(...) \
            log_print(1, "AOS", COL_DEF, "V", __VA_ARGS__)
            
/*
 * Log at debug level.
 *
 * @param[in]  mod  string description of module.
 * @param[in]  fmt  same as printf() usage.
 */
#define LOGD(mod, ...) LOGD_IMPL(mod, __VA_ARGS__)

/*
 * Log at the level set by aos_set_log_level().
 *
 * @param[in]  fmt  same as printf() usage.
 */
#define LOG(...) LOG_IMPL(__VA_ARGS__)

__attribute__((weak)) int csp_printf(const char *fmt, ...)
{
    va_list args;
    int     ret;

    ret = aos_mutex_lock(&log_mutex, AOS_WAIT_FOREVER);
    if (ret == 0) {
        va_start(args, fmt);
        ret = vprintf(fmt, args);
        va_end(args);

        fflush(stdout);
    }

    aos_mutex_unlock(&log_mutex);

    return ret;
}

对于aos_mutex_lock 调用krhino_mutex_lock，
不能在中断中调用

kstat_t krhino_mutex_lock(kmutex_t *mutex, tick_t ticks)
{
    CPSR_ALLOC();

    kstat_t  ret;
    ktask_t *mutex_task;
    uint8_t  cur_cpu_num;

    NULL_PARA_CHK(mutex);

    if (g_sys_stat == RHINO_STOPPED) {
        return RHINO_SUCCESS;
    }

    RHINO_CRITICAL_ENTER();

    INTRPT_NESTED_LEVEL_CHK();

    if (mutex->blk_obj.obj_type != RHINO_MUTEX_OBJ_TYPE) {
        RHINO_CRITICAL_EXIT();
        return RHINO_KOBJ_TYPE_ERR;
    }
...

    RHINO_NOT_CALLED_BY_INTRPT = 1000u,
    
#define INTRPT_NESTED_LEVEL_CHK()                        \
    do {                                                 \
        if (g_intrpt_nested_level[cpu_cur_get()] > 0u) { \
            RHINO_CRITICAL_EXIT();                       \
            return RHINO_NOT_CALLED_BY_INTRPT;           \
        }                                                \
    } while (0)