Re: [AD] get_milliseconds function

[Mwarf Dwarf <gullradriel@xxxxxxxxxx>]

wtimer.diff joined do the following: 
* adding tim_win32_get_milliseconds
* setting the timeGetTime granularity to 1 ms in the corresponding win32 timer init & exit proc.
 
Let me know it something is not good from your point of view.
 
I am OK for more test.

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From: gullradriel@xxxxxxxxxx
To: alleg-developers@xxxxxxxxxx
Date: Mon, 28 May 2007 09:09:06 +0000
Subject: Re: [AD] get_milliseconds function

tim_win32_get_milliseconds was not added in the high nor low performance driver list.
 
Doing so solves the problem.
 
I got it working (as told in your a.cc thread ).

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From: gullradriel@xxxxxxxxxx
To: alleg-developers@xxxxxxxxxx
Date: Mon, 28 May 2007 07:31:19 +0000
Subject: Re: [AD] get_milliseconds function

Compiled fine, but when testing extimer said that 0 ms were consumed.
 
I am searching why.

> Date: Sat, 26 May 2007 21:10:31 -0400
> From: cgamesplay@xxxxxxxxxx
> To: alleg-developers@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Subject: [AD] get_milliseconds function
>
> Because it is so trivial (on Linux and Windows), I've written a
> get_milliseconds function for Allegro, which returns the number of
> milliseconds elapsed since some arbitrary time. It actually brings
> Allegro timers into this century in terms of popular timing methods,
> with millisecond accuracy. I've written ports for Windows and Linux..
> the other drivers are simply set to NULL (which causes the function to
> return 0).
>
> *I have NOT compiled the patch on Windows!* I need someone to compile
> it on Windows and run extimer to verify that the changes work.
>
> --
> Regards,
> Ryan Patterson <mailto:cgamesplay@xxxxxxxxxx>

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*** wtimer_ori.c	Mon May 28 11:57:43 2007
--- wtimer.c	Mon May 28 11:15:53 2007
*************** static int tim_win32_high_perf_init(void
*** 56,61 ****
--- 56,62 ----
  static int tim_win32_low_perf_init(void);
  static void tim_win32_exit(void);
  static void tim_win32_rest(unsigned int time, AL_METHOD(void, callback, (void)));
+ static unsigned int tim_win32_get_milliseconds();
  
  
  static TIMER_DRIVER timer_win32_high_perf =
*************** static TIMER_DRIVER timer_win32_high_per
*** 67,73 ****
     tim_win32_high_perf_init,
     tim_win32_exit,
     NULL, NULL, NULL, NULL, NULL, NULL,
!    tim_win32_rest
  };
  
  
--- 68,75 ----
     tim_win32_high_perf_init,
     tim_win32_exit,
     NULL, NULL, NULL, NULL, NULL, NULL,
!    tim_win32_rest,
!    tim_win32_get_milliseconds
  };
  
  
*************** static TIMER_DRIVER timer_win32_low_perf
*** 80,86 ****
     tim_win32_low_perf_init,
     tim_win32_exit,
     NULL, NULL, NULL, NULL, NULL, NULL,
!    tim_win32_rest
  };
  
  
--- 82,89 ----
     tim_win32_low_perf_init,
     tim_win32_exit,
     NULL, NULL, NULL, NULL, NULL, NULL,
!    tim_win32_rest,
!    tim_win32_get_milliseconds
  };
  
  
*************** static void tim_win32_low_perf_thread(vo
*** 199,204 ****
--- 202,209 ----
   */
  static int tim_win32_high_perf_init(void)
  {
+    timeBeginPeriod( 1 ); /* 1 ms granularity */
+    
     if (!QueryPerformanceFrequency(&counter_freq)) {
        _TRACE(PREFIX_W "High performance timer not supported\n");
        return -1;
*************** static int tim_win32_high_perf_init(void
*** 226,231 ****
--- 231,238 ----
   */
  static int tim_win32_low_perf_init(void)
  {
+    timeBeginPeriod( 1 ); /* 1 ms granularity */
+    
     /* create thread termination event */
     timer_stop_event = CreateEvent(NULL, FALSE, FALSE, NULL);
  
*************** static void tim_win32_exit(void)
*** 253,258 ****
--- 260,267 ----
  
     /* thread has ended, now we can release all resources */
     CloseHandle(timer_stop_event);
+    
+    timeEndPeriod( 1 ); /* 1 ms granularity */
  }
  
  
*************** static void tim_win32_rest(unsigned int 
*** 274,276 ****
--- 283,295 ----
        Sleep(ms);
     }
  }
+ 
+ 
+ 
+ /* tim_win32_get_milliseconds:
+  *  Returns the number of milliseconds elapsed since the system was started.
+  */
+ static unsigned int tim_win32_get_milliseconds()
+ {
+    return timeGetTime();
+ }