040000 tree 30122bb4c726cbc9e51f280e56d398e26a2b0445	mutex
040000 tree b54e2632d0707427a39455d0b1b379fe0295c5d1	os_mutex_init
040000 tree 17b4b40ce45e7da9a9764d4bcea740dfb1ff447c	os_mutex_pend
040000 tree 7cc1fe9a45790261dcf2925465510685ca0bb0fc	os_mutex_release