StdLib: Eliminate TimerLib dependencies.
Implement the clock() function using the EFI time-of-day clock instead of a TimerLib instance. Signed-off-by: darylm503 Reviewed-by: jljusten Reviewed-by: geekboy15a git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12683 6f19259b-4bc3-4df7-8a09-765794883524
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@@ -180,34 +180,6 @@ timesub(
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/* ############### Time Manipulation Functions ########################## */
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/** The clock function determines the processor time used.
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@return The clock function returns the implementation's best
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approximation to the processor time used by the program since the
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beginning of an implementation-defined era related only to the
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program invocation. To determine the time in seconds, the value
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returned by the clock function should be divided by the value of
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the macro CLOCKS_PER_SEC. If the processor time used is not
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available or its value cannot be represented, the function
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returns the value (clock_t)(-1).
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On IA32 or X64 platforms, the value returned is the number of
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CPU TimeStamp Counter ticks since the appliation started.
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**/
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clock_t
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clock(void)
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{
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#ifndef NT32dvm
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clock_t temp;
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temp = (clock_t)GetPerformanceCounter();
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return temp - gMD->AppStartTime;
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#else
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return (clock_t)-1;
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#endif /* NT32dvm */
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}
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/**
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**/
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double
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@@ -591,6 +563,28 @@ time(time_t *timer)
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return CalTime; // Return calendar time in microseconds
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}
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/** The clock function determines the processor time used.
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@return The clock function returns the implementation's best
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approximation to the processor time used by the program since the
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beginning of an implementation-defined era related only to the
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program invocation. To determine the time in seconds, the value
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returned by the clock function should be divided by the value of
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the macro CLOCKS_PER_SEC. If the processor time used is not
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available or its value cannot be represented, the function
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returns the value (clock_t)(-1).
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**/
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clock_t
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clock(void)
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{
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clock_t retval;
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time_t temp;
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temp = time(NULL);
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retval = ((clock_t)((UINT32)temp)) - gMD->AppStartTime;
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return retval;
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}
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/* ################# Time Conversion Functions ########################## */
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/*
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Except for the strftime function, these functions each return a pointer to
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