px4::init_once();
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void init_once()
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{
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_shell_task_id = pthread_self(); //获取自生PID
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//printf("[init] shell id: %lu\n", (unsigned long)_shell_task_id);
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work_queues_init(); //工作队列初始化? 创建了一个高优先级和一个低优先级工作线程
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hrt_work_queue_init(); //创建了一个最高优先级的工作队列?
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hrt_init(); //初始化了hrt信号量?
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param_init(); //初始化了param_sem和reader_lock_holders_lock信号量
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#ifdef CONFIG_SHMEM
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PX4_DEBUG("Syncing params to shared memory\n");
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init_params();
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#endif
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}
px4::init(argc, argv, "px4");
画了一个px4。
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void init(int argc, char *argv[], const char *app_name)
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{
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printf("\n");
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printf("______ __ __ ___ \n");
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printf("| ___ \\ \\ \\ / / / |\n");
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printf("| |_/ / \\ V / / /| |\n");
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printf("| __/ / \\ / /_| |\n");
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printf("| | / /^\\ \\ \\___ |\n");
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printf("\\_| \\/ \\/ |_/\n");
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printf("\n");
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printf("%s starting.\n", app_name);
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printf("\n");
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// set the threads name
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#ifdef __PX4_DARWIN
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(void)pthread_setname_np(app_name);
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#else
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(void)pthread_setname_np(pthread_self(), app_name);
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#endif
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}
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