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|
/*++
Copyright (c) 1991 Microsoft Corporation
Module Name:
Profile.c
Abstract:
This module contains routines for controling the rudimentary sampling
profiler built into the profiling version of Ntvdm.
Author:
Dave Hastings (daveh) 31-Jul-1992
Notes:
The routines in this module assume that the pointers to the ntsd
routines have already been set up.
Revision History:
--*/
#include <precomp.h>
#pragma hdrstop
#include <stdio.h>
VOID
ProfDumpp(
VOID
)
/*++
Routine Description:
This routine causes the profile information to be dumped the next
time ntvdm switches from 32 to 16 bit mode.
Arguments:
Return Value:
None.
Notes:
This routine assumes that the pointers to the ntsd routines have already
been set up.
--*/
{
BOOL Status;
ULONG Address, Flags;
Address = FIXED_NTVDMSTATE_LINEAR;
//
// Get Flags
//
Status = READMEM((PVOID)Address, &Flags, sizeof(ULONG));
if (!Status) {
(ULONG)Address = (*GetExpression)("ntvdm!InitialVdmTibFlags");
Status = READMEM((PVOID)Address, &Flags, sizeof(ULONG));
if (!Status) {
GetLastError();
(*Print)("Could not get InitialVdmTibFlags\n");
return;
}
}
//
// Enable profile dump
//
Flags |= VDM_ANALYZE_PROFILE;
Status = WRITEMEM(
(PVOID)Address,
&Flags,
sizeof(ULONG)
);
if (!Status) {
GetLastError();
(*Print)("Could not set Flags\n");
return;
}
}
VOID
ProfIntp(
VOID
)
/*++
Routine Description:
This routine changes the profile interval the next time profiling is
started.
Arguments:
None.
Return Value:
None.
Notes:
This routine assumes that the pointers to the ntsd routines have already
been set up.
--*/
{
BOOL Status;
ULONG Address, ProfInt;
//
// Get profile interval
//
if (sscanf(lpArgumentString, "%ld", &ProfInt) < 1) {
(*Print)("Profile Interval must be specified\n");
return;
}
//
// Get the address of the profile interval
//
Address = (*GetExpression)(
"ProfInt"
);
if (Address) {
Status = WRITEMEM(
(PVOID)Address,
&ProfInt,
sizeof(ULONG)
);
if (!Status) {
GetLastError();
(*Print)("Could not set profile interval");
}
}
return;
}
VOID
ProfStartp(
VOID
)
/*++
Routine Description:
This routine causes profiling to start the next
time ntvdm switches from 32 to 16 bit mode.
Arguments:
None.
Return Value:
None.
Notes:
This routine assumes that the pointers to the ntsd routines have already
been set up.
--*/
{
BOOL Status;
ULONG Address, Flags;
Address = FIXED_NTVDMSTATE_LINEAR;
//
// Get Flags
//
Status = READMEM(
(PVOID)Address,
&Flags,
sizeof(ULONG)
);
if (!Status) {
(ULONG)Address = (*GetExpression)("ntvdm!InitialVdmTibFlags");
Status = READMEM(
(PVOID)Address,
&Flags,
sizeof(ULONG)
);
if (!Status) {
GetLastError();
(*Print)("Could not get InitialTibflags\n");
return;
}
}
//
// Enable profiling
//
Flags |= VDM_PROFILE;
Status = WRITEMEM(
(PVOID)Address,
&Flags,
sizeof(ULONG)
);
if (!Status) {
GetLastError();
(*Print)("Could not get set Flags\n");
return;
}
}
VOID
ProfStopp(
VOID
)
/*++
Routine Description:
This routine causes profiling to stop the next
time ntvdm switches from 32 to 16 bit mode.
Arguments:
None.
Return Value:
None.
Notes:
This routine assumes that the pointers to the ntsd routines have already
been set up.
--*/
{
BOOL Status;
ULONG Address, Flags;
Address = FIXED_NTVDMSTATE_LINEAR;
//
// Get Flags
//
Status = READMEM((PVOID)Address, &Flags, sizeof(ULONG));
if (!Status) {
(ULONG)Address = (*GetExpression)("ntvdm!InitialVdmTibFlags");
Status = READMEM((PVOID)Address, &Flags, sizeof(ULONG));
if (!Status) {
GetLastError();
(*Print)("Could not get InitialTibflags\n");
return;
}
}
//
// Disable profiling
//
Flags &= ~VDM_PROFILE;
Status = WRITEMEM(
(PVOID)Address,
&Flags,
sizeof(ULONG)
);
if (!Status) {
GetLastError();
(*Print)("Could not get set VDM Flags in DOS arena\n");
return;
}
}
|
