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add legacy sys/ttydefaults.h header
[oweals/musl.git]
/
src
/
thread
/
__lock.c
1
#include "pthread_impl.h"
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void __lock(volatile int *l)
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{
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while (a_swap(l, 1)) __wait(l, l+1, 1, 1);
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}
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void __unlock(volatile int *l)
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{
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a_store(l, 0);
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if (l[1]) __wake(l, 1, 1);
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}