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来自「rtlinux3.0 的源代码」· 代码 · 共 11 行

This example demonstrate the use of mutexes in RTLinux programs.
The Linux init_module() function creates a mutex and locks it.
Then it creates an RT-thread that also tries to lock the mutex and blocks.

After a 500 ms pause, the Linux threads unlocks the mutex, which can now 
be locked by the RT-thread. The time spent in pthread_mutex_lock is reported
to show that the RT-thread actually blocks.

To run the example, type make test. You have to be at a Linux console (no X)
to see the results.