ssize_t write(int fd, const void *buf, size_t count)
{
if(fd == -1) return -EBADF;
if(!buf) return -EFAULT;
if(!count) return 0;
return (ssize_t)SYSCALL3(SYSCALL_WRITE, fd, buf, count);
}
int ioctl(int fd, int req, int *argp)
{
int ret;
SYSCALL3(SYS_IOCTL, fd, req, argp, ret);
return ret;
}
int ioctl(int fd, unsigned long request, ...)
{
va_list args;
va_start(args, request);
void *arg = va_arg(args, void *);
va_end(args);
return (int)SYSCALL3(SYS_Ioctl, fd, request, arg);
}
ssize_t read(int fd, void *buf, size_t count)
{
ssize_t ret;
if(fd == -1) return -EBADF;
if(!buf) return -EFAULT;
if(!count) return 0;
ret = (size_t)SYSCALL3(SYSCALL_READ, fd, buf, count);
return ret;
}
//------------------------------------------------------------------------------
// Wait
//------------------------------------------------------------------------------
int tbthread_cond_wait(tbthread_cond_t *cond, tbthread_mutex_t *mutex)
{
tb_futex_lock(&cond->lock);
int st = 0;
if(!cond->mutex)
cond->mutex = mutex;
if(cond->mutex != mutex) {
st = -EINVAL;
goto error;
}
st = tbthread_mutex_unlock(mutex);
if(st) goto error;
++cond->waiters;
int bseq = cond->broadcast_seq;
int futex = cond->futex;
tb_futex_unlock(&cond->lock);
while(1) {
st = SYSCALL3(__NR_futex, &cond->futex, FUTEX_WAIT, futex);
if(st == -EINTR)
continue;
tb_futex_lock(&cond->lock);
if(cond->signal_num) {
--cond->signal_num;
goto exit;
}
if(bseq != cond->broadcast_seq)
goto exit;
tb_futex_unlock(&cond->lock);
}
error:
if(!cond->waiters)
cond->mutex = 0;
tb_futex_unlock(&cond->lock);
return st;
exit:
--cond->waiters;
if(!cond->waiters)
cond->mutex = 0;
tb_futex_unlock(&cond->lock);
tbthread_mutex_lock(mutex);
return st;
}
//------------------------------------------------------------------------------
// Signal
//------------------------------------------------------------------------------
int tbthread_cond_signal(tbthread_cond_t *cond)
{
tb_futex_lock(&cond->lock);
if(cond->waiters == cond->signal_num)
goto exit;
++cond->futex;
++cond->signal_num;
SYSCALL3(__NR_futex, &cond->futex, FUTEX_WAKE, 1);
exit:
tb_futex_unlock(&cond->lock);
return 0;
}
//------------------------------------------------------------------------------
// Broadcast
//------------------------------------------------------------------------------
int tbthread_cond_broadcast(tbthread_cond_t *cond)
{
tb_futex_lock(&cond->lock);
if(!cond->waiters)
goto exit;
++cond->futex;
++cond->broadcast_seq;
SYSCALL3(__NR_futex, &cond->futex, FUTEX_WAKE, INT_MAX);
exit:
tb_futex_unlock(&cond->lock);
return 0;
}
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <_ansi.h>
#include <_syslist.h>
#include <errno.h>
#undef errno
extern int errno;
#include "warning.h"
#include "syscall.h"
int
_DEFUN (_open, (file, flags, mode),
char *file _AND
int flags _AND
int mode)
{
int ret;
ret = SYSCALL3(__NR_open, file, flags, mode);
if (ret < 0) {
errno = -ret;
ret = -1;
}
return ret;
}
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <_ansi.h>
#include <_syslist.h>
#include <errno.h>
#undef errno
extern int errno;
#include "warning.h"
#include "syscall.h"
int
_DEFUN (_lseek, (file, ptr, dir),
int file _AND
int ptr _AND
int dir)
{
int ret;
ret = SYSCALL3(__NR_lseek, file, ptr, dir);
if (ret < 0) {
errno = -ret;
ret = -1;
}
return ret;
}
// open call close
s64 Open(char* path, s64 flag, s64 mode)
{
SYSCALL3(SYS_OPEN, path, flag, mode);
}
