Rich Felker
b1c43161c2
this change is necessary to free up one slot in the mutex structure so that we can use doubly-linked lists in the implementation of robust mutexes.
15 lines
319 B
C
15 lines
319 B
C
#include "pthread_impl.h"
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int pthread_mutex_lock(pthread_mutex_t *m)
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{
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int r;
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while ((r=pthread_mutex_trylock(m)) == EBUSY) {
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if (!(r=m->_m_lock)) continue;
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if (m->_m_type == PTHREAD_MUTEX_ERRORCHECK
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&& r == pthread_self()->tid)
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return EDEADLK;
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__wait(&m->_m_lock, &m->_m_waiters, r, 0);
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}
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return r;
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}
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