From 29bcffd77e32abc94600b9078f254b159a2dde8d Mon Sep 17 00:00:00 2001
From: unknown <msvensson@shellback.>
Date: Thu, 14 Dec 2006 15:23:44 +0100
Subject: BUG#24687 func_misc test fails on win64  - Use same precision
 (milliseconds) for all time functions    used  when calculating time for
 pthread_cond_timedwait  - Use 'GetSystemTimeAsFileTime' for both start and
 curr time

include/config-win.h:
  Move all defines for 'pthread_cond_timedwait' to my_pthread.h
include/my_global.h:
  Move all defines for 'pthread_cond_timedwait' to my_pthread.h
include/my_pthread.h:
  Redefine "struct timespec" to better suite the needs
  of 'pthread_cond_timedwait' for windows implementation
  Add windows specific define for set_timespec_nsec
  Move all defines related to pthread_cond_timed wait to same file
  Declare union for reading FILETIME as __int64 with correct alignment
mysys/my_wincond.c:
  Use 'GetSystemTimeAsFileTime()' both for getting start and current time
  Use new members of "struct timespec"
  Make sure the calculated timeout value never exceeds the value
  passed to set_timespec/set_timespec_nsec
server-tools/instance-manager/guardian.cc:
  Use set_timespec macro
server-tools/instance-manager/instance.cc:
  Use set_timespec macro
---
 mysys/my_wincond.c | 28 ++++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

(limited to 'mysys/my_wincond.c')

diff --git a/mysys/my_wincond.c b/mysys/my_wincond.c
index 8c497e8f250..327addff2cc 100644
--- a/mysys/my_wincond.c
+++ b/mysys/my_wincond.c
@@ -54,14 +54,30 @@ int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
 int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex,
                            struct timespec *abstime)
 {
-  struct _timeb curtime;
   int result;
-  long timeout;
-  _ftime(&curtime);
-  timeout= ((long) (abstime->tv_sec - curtime.time)*1000L +
-		    (long)((abstime->tv_nsec/1000) - curtime.millitm)/1000L);
-  if (timeout < 0)				/* Some safety */
+  long timeout; 
+  union ft64 now;
+  
+  GetSystemTimeAsFileTime(&now.ft);
+
+  /*
+    - subtract start time from current time(values are in 100ns units
+    - convert to millisec by dividing with 10000
+    - subtract time since start from max timeout
+  */
+  timeout= abstime->timeout_msec - (long)((now.i64 - abstime->start.i64) / 10000);
+  
+  /* Don't allow the timeout to be negative */
+  if (timeout < 0)
     timeout = 0L;
+
+  /*
+    Make sure the calucated time does not exceed original timeout
+    value which could cause "wait for ever" if system time changes
+  */
+  if (timeout > abstime->timeout_msec)
+    timeout= abstime->timeout_msec;
+
   InterlockedIncrement(&cond->waiting);
   LeaveCriticalSection(mutex);
   result=WaitForSingleObject(cond->semaphore,timeout);
-- 
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