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Subject: Re: get_ms() bug

Author: J. Wesley Cleveland

Date: 18:21:56 05/13/04

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On May 13, 2004 at 19:37:43, Dann Corbit wrote:

>On May 13, 2004 at 18:41:53, Omid David Tabibi wrote:
>
>>On May 13, 2004 at 16:11:34, Jeff GAZET wrote:
>>
>>>hi,
>>>
>>>All versions of my engine have got a bug since a few hours : you can't set a
>>>fixed depth :-(
>>>
>>>for those who are using something like this :
>>>
>>>int stop_time;
>>>stop_time=get_ms()+1000;
>>>
>>>this is buggy now, as get_ms()>2146589376
>>>and long is 2147483647
>>
>>I had a similar bug in Falcon, and I discovered it just one day before the Graz
>>WCCC! I don't remember what exactly went wrong there, but since then I am using
>>Windows' GetTickCount() function.
>
>Has similar problems (will wrap-around once 4 billion milliseconds have elapsed
>from system start).
>86400sec/day*1000ms/sec = 86,400,000 ms per day gives about 49.7 days.

Windows 95 had a worse problem. If the tick count rolled over, the system would
crash. It took them years to discover this problem. I assume that was because
Windows 95 would crash for some other reason long before 49.7 days of uptime.



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