From 4d029f3940b1f91b5ee06ccd724c90245c9d52cc Mon Sep 17 00:00:00 2001
From: Christopher Faylor <me@cgf.cx>
Date: Wed, 28 Nov 2001 00:06:35 +0000
Subject: * cygwin.din (ualarm): New export. * dcrt0.cc (_dll_crt0): Add
 experimental tls storage declaration. (dll_crt0): Ditto. * debug.cc
 (thread_stub): Ditto. * thread.cc: Minor cleanup. (__pthread_create): Add
 experimental tls storage declaration. * miscfuncs.cc: Define tls index. *
 winsup.h: Declare experimental tls storage. * window.cc (alarm): Use old
 timer return from setitimer. (ualarm): New function.

---
 winsup/cygwin/window.cc | 34 +++++++++++++++++++++++-----------
 1 file changed, 23 insertions(+), 11 deletions(-)

(limited to 'winsup/cygwin/window.cc')

diff --git a/winsup/cygwin/window.cc b/winsup/cygwin/window.cc
index 0554f37df..dbff12b69 100644
--- a/winsup/cygwin/window.cc
+++ b/winsup/cygwin/window.cc
@@ -150,8 +150,7 @@ window_terminate ()
     SendMessage (ourhwnd, WM_DESTROY, 0, 0);
 }
 
-extern "C"
-int
+extern "C" int
 setitimer (int which, const struct itimerval *value, struct itimerval *oldvalue)
 {
   UINT elapse;
@@ -195,8 +194,7 @@ setitimer (int which, const struct itimerval *value, struct itimerval *oldvalue)
   return 0;
 }
 
-extern "C"
-int
+extern "C" int
 getitimer (int which, struct itimerval *value)
 {
   UINT elapse, val;
@@ -221,27 +219,41 @@ getitimer (int which, struct itimerval *value)
   elapse = GetTickCount () - start_time;
   val = itv.it_value.tv_sec * 1000 + itv.it_value.tv_usec / 1000;
   val -= elapse;
-  value->it_value.tv_sec = val/1000;
-  value->it_value.tv_usec = val%1000;
+  value->it_value.tv_sec = val / 1000;
+  value->it_value.tv_usec = val % 1000;
   return 0;
 }
 
-extern "C"
-unsigned int
+extern "C" unsigned int
 alarm (unsigned int seconds)
 {
   int ret;
   struct itimerval newt, oldt;
 
-  getitimer (ITIMER_REAL, &oldt);
-
   newt.it_value.tv_sec = seconds;
   newt.it_value.tv_usec = 0;
   newt.it_interval.tv_sec = 0;
   newt.it_interval.tv_usec = 0;
-  setitimer (ITIMER_REAL, &newt, NULL);
+  setitimer (ITIMER_REAL, &newt, &oldt);
   ret = oldt.it_value.tv_sec;
   if (ret == 0 && oldt.it_value.tv_usec)
     ret = 1;
   return ret;
 }
+
+extern "C" useconds_t
+ualarm (useconds_t value, useconds_t interval)
+{
+  struct itimerval timer, otimer;
+
+  timer.it_value.tv_sec = 0;
+  timer.it_value.tv_usec = value;
+  timer.it_interval.tv_sec = 0;
+  timer.it_interval.tv_usec = interval;
+
+  if (setitimer (ITIMER_REAL, &timer, &otimer) < 0)
+    return (u_int)-1;
+
+  return (otimer.it_value.tv_sec * 1000000) + otimer.it_value.tv_usec;
+}
+
-- 
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