Hello list,
What is the difference between GetThreadID() and GetCurrentThreadID()?
Mailing lists / fpc-pascal / 2010-02
Thread IDs
5 messages · 3 people · –
- Wimpie Nortje 3
- Jonas Maebe 1
- Vincent Snijders 1
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Wimpie Nortje wroteWhat is the difference between GetThreadID() and GetCurrentThreadID()?
There is a threadvar called "threadid" in the system unit. When a new thread is started, GetCurrentThreadID is called to obtain the thread id of the new thread (via the thread manager) and the result is stored in the threadid threadvar. GetThreadID simply returns the value of this threadvar.
So in summary: there is no semantic difference.
Jonas
Jonas Maebe wrote 13 lines
On 18 Feb 2010, at 16:35, Wimpie Nortje wrote:
> What is the difference between GetThreadID() and GetCurrentThreadID()?
There is a threadvar called "threadid" in the system unit. When a new
thread is started, GetCurrentThreadID is called to obtain the thread
id of the new thread (via the thread manager) and the result is stored
in the threadid threadvar. GetThreadID simply returns the value of
this threadvar.
So in summary: there is no semantic difference.
They return different values. I think GetCurrentThreadID is the more trustworthy one. When control returns to my main thread then GetCurrentThreadID = MainThreadID and GetThreadID MainThreadID
Wimpie Nortje wrote 19 lines
Jonas Maebe wrote:
>
> On 18 Feb 2010, at 16:35, Wimpie Nortje wrote:
>
>> What is the difference between GetThreadID() and GetCurrentThreadID()?
>
> There is a threadvar called "threadid" in the system unit. When a new
> thread is started, GetCurrentThreadID is called to obtain the thread
> id of the new thread (via the thread manager) and the result is stored
> in the threadid threadvar. GetThreadID simply returns the value of
> this threadvar.
>
> So in summary: there is no semantic difference.
>
They return different values. I think GetCurrentThreadID is the more
trustworthy one. When control returns to my main thread then
GetCurrentThreadID = MainThreadID and GetThreadID MainThreadID
I found some inconsistencies a couple of months ago, but never got to creating a bug report:
lists.freepascal.org seems down, so I found this link.
VIncent
Show quoted text 11 lines
I found some inconsistencies a couple of months ago, but never got to
creating a bug report:
lists.freepascal.org seems down, so I found this link.
VIncent
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Bug report created.
http://bugs.freepascal.org/view.php?id=15821