154 lines
3 KiB
C
154 lines
3 KiB
C
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/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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Wperf.c
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Abstract:
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Win32 application to display performance statictics.
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Author:
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Ken Reneris
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Environment:
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console
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--*/
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//
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// set variable to define global variables
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//
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <windows.h>
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#include <errno.h>
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#include <malloc.h>
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#include <stdlib.h>
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#include <stdio.h>
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//
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// global handles
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//
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UCHAR Usage[] = "ec: r addr len\n w addr value";
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HANDLE DriverHandle;
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UCHAR Buffer[256];
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//
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// Prototypes
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//
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BOOLEAN
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InitDriver ();
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int
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__cdecl
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main(USHORT argc, CHAR **argv)
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{
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BOOLEAN Write;
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ULONG Offset, Value;
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ULONG l, bw;
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//
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// Locate pentium perf driver
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//
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if (!InitDriver ()) {
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printf ("acpiec.sys is not installed\n");
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exit (1);
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}
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//
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// Check args
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//
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if (argc < 3) {
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printf (Usage);
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exit (1);
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}
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switch (argv[1][0]) {
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case 'r': Write = FALSE; break;
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case 'w': Write = TRUE; break;
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default: printf (Usage); exit(1);
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}
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Offset = atoi(argv[2]);
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if (Offset > 255) {
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printf ("ec: Offset must be 0-255\n");
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exit (1);
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}
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Value = atoi(argv[3]);
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if (Value > 255) {
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printf ("ec: len/value must be 0-255\n");
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exit (1);
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}
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l = SetFilePointer (DriverHandle, Offset, NULL, FILE_BEGIN);
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if (l == -1) {
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printf ("ec: Could not set file pointer\n");
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exit (1);
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}
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if (Write) {
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if (!WriteFile(DriverHandle, &Value, 1, &bw, NULL)) {
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printf ("ec: Write error\n");
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exit (1);
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}
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} else {
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if (!ReadFile(DriverHandle, Buffer, Value, &bw, NULL)) {
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printf ("ec: Read error\n");
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exit (1);
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}
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for (l=0; l < Value; l++) {
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printf ("%3d: %d\n", Offset + l, Buffer[l]);
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}
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}
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return 0;
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}
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BOOLEAN
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InitDriver ()
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{
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UNICODE_STRING DriverName;
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NTSTATUS status;
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OBJECT_ATTRIBUTES ObjA;
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IO_STATUS_BLOCK IOSB;
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SYSTEM_BASIC_INFORMATION BasicInfo;
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PSYSTEM_PROCESSOR_PERFORMANCE_INFORMATION PPerfInfo;
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int i;
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RtlInitUnicodeString(&DriverName, L"\\Device\\ACPIEC");
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InitializeObjectAttributes(
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&ObjA,
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&DriverName,
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OBJ_CASE_INSENSITIVE,
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0,
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0 );
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status = NtOpenFile (
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&DriverHandle, // return handle
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SYNCHRONIZE | FILE_READ_DATA | FILE_WRITE_DATA, // desired access
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&ObjA, // Object
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&IOSB, // io status block
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FILE_SHARE_READ | FILE_SHARE_WRITE, // share access
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FILE_SYNCHRONOUS_IO_ALERT // open options
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);
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return NT_SUCCESS(status) ? TRUE : FALSE;
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}
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