A POSIX thread on RHEL has a private stack with a size of 10mb.
RHEL上的一个POSIX线程拥有一个大小为10 MB的私有堆栈。
The POSIX thread stuff is nicer, in my opinion (and generally lighter-weight).
POSIX线程的东西是更好的，在我看来（一般轻量级）。
As you may have guessed, the POSIX threads library will grant a lock without having put the thread to sleep at all if a thread tries to lock an unlocked mutex.
可以推测到，当线程试图锁定一个未加锁的互斥对象时，POSI x线程库将同意锁定，而不会使线程进入睡眠状态。
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