int pthread_barrier_destroy(pthread_barrier_t *b)
{
if (b->_b_limit < 0) {
if (b->_b_lock) {
int v;
a_or(&b->_b_lock, INT_MIN);
while ((v = b->_b_lock) & INT_MAX)
__wait(&b->_b_lock, 0, v, 0);
}
__vm_wait();
}
return 0;
}
void* __mremap(void* old_addr, size_t old_len, size_t new_len, int flags, ...) {
va_list ap;
void* new_addr = 0;
if (new_len >= PTRDIFF_MAX) {
errno = ENOMEM;
return MAP_FAILED;
}
if (flags & MREMAP_FIXED) {
__vm_wait();
va_start(ap, flags);
new_addr = va_arg(ap, void*);
va_end(ap);
}
void *__mmap(void *start, size_t len, int prot, int flags, int fd, off_t off)
{
if (off & OFF_MASK) {
errno = EINVAL;
return MAP_FAILED;
}
if (len >= PTRDIFF_MAX) {
errno = ENOMEM;
return MAP_FAILED;
}
if (flags & MAP_FIXED) {
__vm_wait();
}
#ifdef SYS_mmap2
return (void *)syscall(SYS_mmap2, start, len, prot, flags, fd, off/UNIT);
#else
return (void *)syscall(SYS_mmap, start, len, prot, flags, fd, off);
#endif
}
void *__mmap(void *start, size_t len, int prot, int flags, int fd, off_t off)
{
long ret;
if (off & OFF_MASK) {
errno = EINVAL;
return MAP_FAILED;
}
if (len >= PTRDIFF_MAX) {
errno = ENOMEM;
return MAP_FAILED;
}
if (flags & MAP_FIXED) {
__vm_wait();
}
#ifdef SYS_mmap2
ret = __syscall(SYS_mmap2, start, len, prot, flags, fd, off/UNIT);
#else
ret = __syscall(SYS_mmap, start, len, prot, flags, fd, off);
#endif
/* Fixup incorrect EPERM from kernel. */
if (ret == -EPERM && !start && (flags&MAP_ANON) && !(flags&MAP_FIXED))
ret = -ENOMEM;
return (void *)__syscall_ret(ret);
}
int __munmap(void *start, size_t len)
{
__vm_wait();
return syscall(SYS_munmap, start, len);
}
