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supermartian/gist:207b3b0ec81f56da6b8e

Created October 1, 2015 18:59
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pthread_mutex_lock
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gistfile1.txt
pthread mutex lock comes with different types:
1. private: process only
2. shared: cross the process boundary
Private:
Spins in the userspace for a while, after a timeout, goes to futex. In this way it saves some system calls.
Shared:
Goes to futex directly.
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