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pdh: Implement PdhCalculateCounterFromRawValue.

This commit is contained in:
Hans Leidekker 2007-09-29 21:06:49 +02:00 committed by Alexandre Julliard
parent 0389ec60d9
commit a83509c7d3
2 changed files with 73 additions and 38 deletions
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2
dlls/pdh/pdh.spec
View File

@ -11,7 +11,7 @@
@ stub PdhBrowseCountersHA
@ stub PdhBrowseCountersHW
@ stub PdhBrowseCountersW
@ stub PdhCalculateCounterFromRawValue
@ stdcall PdhCalculateCounterFromRawValue(ptr long ptr ptr ptr)
@ stub PdhCloseLog
@ stdcall PdhCloseQuery(ptr)
@ stdcall PdhCollectQueryData(ptr)

109
dlls/pdh/pdh_main.c
View File

@ -96,6 +96,13 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
return TRUE;
}
union value
{
LONG longvalue;
double doublevalue;
LONGLONG largevalue;
};
struct counter
{
DWORD magic; /* signature */
@ -110,18 +117,8 @@ struct counter
LONGLONG base; /* samples per second */
FILETIME stamp; /* time stamp */
void (CALLBACK *collect)( struct counter * ); /* collect callback */
union
{
LONG longvalue;
double doublevalue;
LONGLONG largevalue;
} one; /* first value */
union
{
LONG longvalue;
double doublevalue;
LONGLONG largevalue;
} two; /* second value */
union value one; /* first value */
union value two; /* second value */
};
#define PDH_MAGIC_COUNTER 0x50444831 /* 'PDH1' */
@ -319,6 +316,64 @@ PDH_STATUS WINAPI PdhAddEnglishCounterW( PDH_HQUERY query, LPCWSTR path,
return PdhAddCounterW( query, path, userdata, counter );
}
/* caller must hold counter lock */
static PDH_STATUS format_value( struct counter *counter, DWORD format, union value *raw1,
union value *raw2, PDH_FMT_COUNTERVALUE *value )
{
LONG factor;
factor = counter->scale ? counter->scale : counter->defaultscale;
if (format & PDH_FMT_LONG)
{
if (format & PDH_FMT_1000) value->u.longValue = raw2->longvalue * 1000;
else value->u.longValue = raw2->longvalue * pow( 10, factor );
}
else if (format & PDH_FMT_LARGE)
{
if (format & PDH_FMT_1000) value->u.largeValue = raw2->largevalue * 1000;
else value->u.largeValue = raw2->largevalue * pow( 10, factor );
}
else if (format & PDH_FMT_DOUBLE)
{
if (format & PDH_FMT_1000) value->u.doubleValue = raw2->doublevalue * 1000;
else value->u.doubleValue = raw2->doublevalue * pow( 10, factor );
}
else
{
WARN("unknown format %x\n", format);
return PDH_INVALID_ARGUMENT;
}
return ERROR_SUCCESS;
}
/***********************************************************************
* PdhCalculateCounterFromRawValue (PDH.@)
*/
PDH_STATUS WINAPI PdhCalculateCounterFromRawValue( PDH_HCOUNTER handle, DWORD format,
PPDH_RAW_COUNTER raw1, PPDH_RAW_COUNTER raw2,
PPDH_FMT_COUNTERVALUE value )
{
PDH_STATUS ret;
struct counter *counter = handle;
TRACE("%p 0x%08x %p %p %p\n", handle, format, raw1, raw2, value);
if (!value) return PDH_INVALID_ARGUMENT;
EnterCriticalSection( &pdh_handle_cs );
if (!counter || counter->magic != PDH_MAGIC_COUNTER)
{
LeaveCriticalSection( &pdh_handle_cs );
return PDH_INVALID_HANDLE;
}
ret = format_value( counter, format, (union value *)&raw1->SecondValue,
(union value *)&raw2->SecondValue, value );
LeaveCriticalSection( &pdh_handle_cs );
return ret;
}
/* caller must hold query lock */
static void shutdown_query_thread( struct query *query )
{
@ -630,7 +685,7 @@ PDH_STATUS WINAPI PdhGetCounterTimeBase( PDH_HCOUNTER handle, LONGLONG *base )
PDH_STATUS WINAPI PdhGetFormattedCounterValue( PDH_HCOUNTER handle, DWORD format,
LPDWORD type, PPDH_FMT_COUNTERVALUE value )
{
LONG factor;
PDH_STATUS ret;
struct counter *counter = handle;
TRACE("%p %x %p %p\n", handle, format, type, value);
@ -648,34 +703,14 @@ PDH_STATUS WINAPI PdhGetFormattedCounterValue( PDH_HCOUNTER handle, DWORD format
LeaveCriticalSection( &pdh_handle_cs );
return PDH_INVALID_DATA;
}
factor = counter->scale ? counter->scale : counter->defaultscale;
if (format & PDH_FMT_LONG)
if (!(ret = format_value( counter, format, &counter->one, &counter->two, value )))
{
if (format & PDH_FMT_1000) value->u.longValue = counter->two.longvalue * 1000;
else value->u.longValue = counter->two.longvalue * pow( 10, factor );
value->CStatus = ERROR_SUCCESS;
if (type) *type = counter->type;
}
else if (format & PDH_FMT_LARGE)
{
if (format & PDH_FMT_1000) value->u.largeValue = counter->two.largevalue * 1000;
else value->u.largeValue = counter->two.largevalue * pow( 10, factor );
}
else if (format & PDH_FMT_DOUBLE)
{
if (format & PDH_FMT_1000) value->u.doubleValue = counter->two.doublevalue * 1000;
else value->u.doubleValue = counter->two.doublevalue * pow( 10, factor );
}
else
{
WARN("unknown format %x\n", format);
LeaveCriticalSection( &pdh_handle_cs );
return PDH_INVALID_ARGUMENT;
}
value->CStatus = ERROR_SUCCESS;
if (type) *type = counter->type;
LeaveCriticalSection( &pdh_handle_cs );
return ERROR_SUCCESS;
return ret;
}
/***********************************************************************