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[hurd,commited] hurd: Simplify usleep timeout computation
From: |
Samuel Thibault |
Subject: |
[hurd,commited] hurd: Simplify usleep timeout computation |
Date: |
Mon, 29 Jun 2020 10:12:22 +0200 |
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(-)
diff --git a/sysdeps/mach/usleep.c b/sysdeps/mach/usleep.c
index 75514b2e35..bb989e2733 100644
--- a/sysdeps/mach/usleep.c
+++ b/sysdeps/mach/usleep.c
@@ -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);
--
2.27.0
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