- if (m->_m_type != PTHREAD_MUTEX_NORMAL) {
- self = pthread_self();
- if (m->_m_type == PTHREAD_MUTEX_RECURSIVE
- && m->_m_owner == self->tid) {
- if ((unsigned)m->_m_count >= INT_MAX) return EAGAIN;
- m->_m_count++;
- return 0;
- }
+
+ if (m->_m_type == PTHREAD_MUTEX_NORMAL)
+ return a_swap(&m->_m_lock, EBUSY);
+
+ self = pthread_self();
+ tid = self->tid | 0x80000000;
+
+ if (m->_m_type >= 4) {
+ if (!self->robust_list.off)
+ syscall(SYS_set_robust_list,
+ &self->robust_list, 3*sizeof(long));
+ self->robust_list.off = (char*)&m->_m_lock-(char *)&m->_m_next;
+ self->robust_list.pending = &m->_m_next;
+ }
+
+ if (m->_m_lock == tid && (m->_m_type&3) == PTHREAD_MUTEX_RECURSIVE) {
+ if ((unsigned)m->_m_count >= INT_MAX) return EAGAIN;
+ m->_m_count++;
+ return 0;