profil.c File Reference

#include <hal.h>
#include <debug.h>

Include dependency graph for profil.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
VOID NTAPI	HalStopProfileInterrupt (IN KPROFILE_SOURCE ProfileSource)
VOID NTAPI	HalStartProfileInterrupt (IN KPROFILE_SOURCE ProfileSource)
ULONG_PTR NTAPI	HalSetProfileInterval (IN ULONG_PTR Interval)

Variables
BOOLEAN	HalpProfilingStopped = TRUE
UCHAR	HalpProfileRate = 8

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 13 of file profil.c.

Function Documentation

HalSetProfileInterval()

ULONG_PTR NTAPI HalSetProfileInterval

(

IN ULONG_PTR

Interval

)

Definition at line 87 of file profil.c.

{
    ULONG_PTR CurrentValue, NextValue;
    UCHAR i;
 
    /* Normalize interval. 122100 ns is the smallest supported */
    Interval &= ~(1 << 31);
    if (Interval < 1221)
        Interval = 1221;
 
    /* Highest rate value of 15 means 500 ms */
    CurrentValue = 5000000;
    for (i = 15; ; i--)
    {
        NextValue = (CurrentValue + 1) / 2;
        if (Interval > CurrentValue - NextValue / 2)
            break;
        CurrentValue = NextValue;
    }
 
    /* Interval as needed by RTC */
    HalpProfileRate = i;
 
    /* Reset the  */
    if (!HalpProfilingStopped)
    {
       HalStartProfileInterrupt(0);
    }
 
    return CurrentValue;
}

HalStartProfileInterrupt()

VOID NTAPI HalStartProfileInterrupt

(

IN KPROFILE_SOURCE

ProfileSource

)

Definition at line 57 of file profil.c.

{
    UCHAR StatusA, StatusB;
 
    UNREFERENCED_PARAMETER(ProfileSource);
 
    HalpProfilingStopped = FALSE;
 
    /* Acquire the CMOS lock */
    HalpAcquireCmosSpinLock();
 
    /* Set the interval in Status Register A */
    StatusA = HalpReadCmos(RTC_REGISTER_A);
    StatusA = (StatusA & 0xF0) | HalpProfileRate;
    HalpWriteCmos(RTC_REGISTER_A, StatusA);
 
    /* Enable periodic interrupts in Status Register B */
    StatusB = HalpReadCmos(RTC_REGISTER_B);
    StatusB = StatusB | RTC_REG_B_PI;
    HalpWriteCmos(RTC_REGISTER_B, StatusB);
 
    /* Release the CMOS lock */
    HalpReleaseCmosSpinLock();
}

HalStopProfileInterrupt()

VOID NTAPI HalStopProfileInterrupt

(

IN KPROFILE_SOURCE

ProfileSource

)

Definition at line 28 of file profil.c.

{
    UCHAR StatusB;
 
    UNREFERENCED_PARAMETER(ProfileSource);
 
    /* Acquire the CMOS lock */
    HalpAcquireCmosSpinLock();
 
    /* Read Status Register B */
    StatusB = HalpReadCmos(RTC_REGISTER_B);
 
    /* Disable periodic interrupts */
    StatusB = StatusB & ~RTC_REG_B_PI;
 
    /* Write new value into Status Register B */
    HalpWriteCmos(RTC_REGISTER_B, StatusB);
 
    HalpProfilingStopped = TRUE;
 
    /* Release the CMOS lock */
    HalpReleaseCmosSpinLock();
}

Variable Documentation

HalpProfileRate

UCHAR HalpProfileRate = 8

Definition at line 19 of file profil.c.

Referenced by HalSetProfileInterval(), and HalStartProfileInterrupt().

HalpProfilingStopped

BOOLEAN HalpProfilingStopped = TRUE

Definition at line 18 of file profil.c.

Referenced by HalSetProfileInterval(), HalStartProfileInterrupt(), and HalStopProfileInterrupt().