Rich Felker
e882756311
this allows sys/types.h to provide the pthread types, as required by POSIX. this design also facilitates forcing ABI-compatible sizes in the arch-specific alltypes.h, while eliminating the need for developers changing the internals of the pthread types to poke around with arch-specific headers they may not be able to test.
14 lines
267 B
C
14 lines
267 B
C
#include "pthread_impl.h"
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int pthread_rwlock_tryrdlock(pthread_rwlock_t *rw)
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{
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a_inc(&rw->_rw_readers);
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if (rw->_rw_wrlock) {
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a_dec(&rw->_rw_readers);
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if (rw->_rw_waiters && !rw->_rw_readers)
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__wake(&rw->_rw_readers, 1, 0);
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return EAGAIN;
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}
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return 0;
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}
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