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initial check-in, version 0.5.0

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This commit is contained in:
Rich Felker 2011-02-12 00:22:29 -05:00
commit 0b44a0315b
1021 changed files with 45711 additions and 0 deletions
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16
src/thread/__wait.c Normal file
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#define SYSCALL_RETURN_ERRNO
#include "pthread_impl.h"
void __wait(volatile int *addr, volatile int *waiters, int val, int priv)
{
int spins=50000;
if (priv) priv = 128; priv=0;
while (spins--) {
if (*addr==val) a_spin();
else return;
}
if (waiters) a_inc(waiters);
while (*addr==val)
syscall4(__NR_futex, (long)addr, FUTEX_WAIT|priv, val, 0);
if (waiters) a_dec(waiters);
}