[hurd,commited] hurd: Simplify usleep timeout computation
Commit Message
as suggested by Andreas Schwab
* sysdeps/mach/usleep.c (usleep): Divide timeout in an overflow-safe way.
---
sysdeps/mach/usleep.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
@@ -27,16 +27,13 @@ usleep (useconds_t useconds)
{
mach_port_t recv;
int cancel_oldtype;
- useconds_t useconds_up = useconds + 999;
-
- if (useconds_up < useconds)
- useconds_up = UINT32_MAX;
+ mach_msg_timeout_t timeout = useconds / 1000 + (useconds % 1000 != 0);
recv = __mach_reply_port ();
cancel_oldtype = LIBC_CANCEL_ASYNC();
(void) __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT,
- 0, 0, recv, useconds_up / 1000, MACH_PORT_NULL);
+ 0, 0, recv, timeout, MACH_PORT_NULL);
LIBC_CANCEL_RESET (cancel_oldtype);
__mach_port_destroy (mach_task_self (), recv);