pdh

package
v0.2.1 Latest Latest
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 Go to latest Published: Jun 17, 2015 License: Apache-2.0 Imports: 5 Imported by: 0

Documentation

Rendered for windows/amd64

Index

Constants

View Source 
const (
	PDH_CSTATUS_VALID_DATA                     = 0x00000000 // The returned data is valid.
	PDH_CSTATUS_NEW_DATA                       = 0x00000001 // The return data value is valid and different from the last sample.
	PDH_CSTATUS_NO_MACHINE                     = 0x800007D0 // Unable to connect to the specified computer, or the computer is offline.
	PDH_CSTATUS_NO_INSTANCE                    = 0x800007D1
	PDH_MORE_DATA                              = 0x800007D2 // The PdhGetFormattedCounterArray* function can return this if there's 'more data to be displayed'.
	PDH_CSTATUS_ITEM_NOT_VALIDATED             = 0x800007D3
	PDH_RETRY                                  = 0x800007D4
	PDH_NO_DATA                                = 0x800007D5 // The query does not currently contain any counters (for example, limited access)
	PDH_CALC_NEGATIVE_DENOMINATOR              = 0x800007D6
	PDH_CALC_NEGATIVE_TIMEBASE                 = 0x800007D7
	PDH_CALC_NEGATIVE_VALUE                    = 0x800007D8
	PDH_DIALOG_CANCELLED                       = 0x800007D9
	PDH_END_OF_LOG_FILE                        = 0x800007DA
	PDH_ASYNC_QUERY_TIMEOUT                    = 0x800007DB
	PDH_CANNOT_SET_DEFAULT_REALTIME_DATASOURCE = 0x800007DC
	PDH_CSTATUS_NO_OBJECT                      = 0xC0000BB8
	PDH_CSTATUS_NO_COUNTER                     = 0xC0000BB9 // The specified counter could not be found.
	PDH_CSTATUS_INVALID_DATA                   = 0xC0000BBA // The counter was successfully found, but the data returned is not valid.
	PDH_MEMORY_ALLOCATION_FAILURE              = 0xC0000BBB
	PDH_INVALID_HANDLE                         = 0xC0000BBC
	PDH_INVALID_ARGUMENT                       = 0xC0000BBD // Required argument is missing or incorrect.
	PDH_FUNCTION_NOT_FOUND                     = 0xC0000BBE
	PDH_CSTATUS_NO_COUNTERNAME                 = 0xC0000BBF
	PDH_CSTATUS_BAD_COUNTERNAME                = 0xC0000BC0 // Unable to parse the counter path. Check the format and syntax of the specified path.
	PDH_INVALID_BUFFER                         = 0xC0000BC1
	PDH_INSUFFICIENT_BUFFER                    = 0xC0000BC2
	PDH_CANNOT_CONNECT_MACHINE                 = 0xC0000BC3
	PDH_INVALID_PATH                           = 0xC0000BC4
	PDH_INVALID_INSTANCE                       = 0xC0000BC5
	PDH_INVALID_DATA                           = 0xC0000BC6 // specified counter does not contain valid data or a successful status code.
	PDH_NO_DIALOG_DATA                         = 0xC0000BC7
	PDH_CANNOT_READ_NAME_STRINGS               = 0xC0000BC8
	PDH_LOG_FILE_CREATE_ERROR                  = 0xC0000BC9
	PDH_LOG_FILE_OPEN_ERROR                    = 0xC0000BCA
	PDH_LOG_TYPE_NOT_FOUND                     = 0xC0000BCB
	PDH_NO_MORE_DATA                           = 0xC0000BCC
	PDH_ENTRY_NOT_IN_LOG_FILE                  = 0xC0000BCD
	PDH_DATA_SOURCE_IS_LOG_FILE                = 0xC0000BCE
	PDH_DATA_SOURCE_IS_REAL_TIME               = 0xC0000BCF
	PDH_UNABLE_READ_LOG_HEADER                 = 0xC0000BD0
	PDH_FILE_NOT_FOUND                         = 0xC0000BD1
	PDH_FILE_ALREADY_EXISTS                    = 0xC0000BD2
	PDH_NOT_IMPLEMENTED                        = 0xC0000BD3
	PDH_STRING_NOT_FOUND                       = 0xC0000BD4
	PDH_UNABLE_MAP_NAME_FILES                  = 0x80000BD5
	PDH_UNKNOWN_LOG_FORMAT                     = 0xC0000BD6
	PDH_UNKNOWN_LOGSVC_COMMAND                 = 0xC0000BD7
	PDH_LOGSVC_QUERY_NOT_FOUND                 = 0xC0000BD8
	PDH_LOGSVC_NOT_OPENED                      = 0xC0000BD9
	PDH_WBEM_ERROR                             = 0xC0000BDA
	PDH_ACCESS_DENIED                          = 0xC0000BDB
	PDH_LOG_FILE_TOO_SMALL                     = 0xC0000BDC
	PDH_INVALID_DATASOURCE                     = 0xC0000BDD
	PDH_INVALID_SQLDB                          = 0xC0000BDE
	PDH_NO_COUNTERS                            = 0xC0000BDF
	PDH_SQL_ALLOC_FAILED                       = 0xC0000BE0
	PDH_SQL_ALLOCCON_FAILED                    = 0xC0000BE1
	PDH_SQL_EXEC_DIRECT_FAILED                 = 0xC0000BE2
	PDH_SQL_FETCH_FAILED                       = 0xC0000BE3
	PDH_SQL_ROWCOUNT_FAILED                    = 0xC0000BE4
	PDH_SQL_MORE_RESULTS_FAILED                = 0xC0000BE5
	PDH_SQL_CONNECT_FAILED                     = 0xC0000BE6
	PDH_SQL_BIND_FAILED                        = 0xC0000BE7
	PDH_CANNOT_CONNECT_WMI_SERVER              = 0xC0000BE8
	PDH_PLA_COLLECTION_ALREADY_RUNNING         = 0xC0000BE9
	PDH_PLA_ERROR_SCHEDULE_OVERLAP             = 0xC0000BEA
	PDH_PLA_COLLECTION_NOT_FOUND               = 0xC0000BEB
	PDH_PLA_ERROR_SCHEDULE_ELAPSED             = 0xC0000BEC
	PDH_PLA_ERROR_NOSTART                      = 0xC0000BED
	PDH_PLA_ERROR_ALREADY_EXISTS               = 0xC0000BEE
	PDH_PLA_ERROR_TYPE_MISMATCH                = 0xC0000BEF
	PDH_PLA_ERROR_FILEPATH                     = 0xC0000BF0
	PDH_PLA_SERVICE_ERROR                      = 0xC0000BF1
	PDH_PLA_VALIDATION_ERROR                   = 0xC0000BF2
	PDH_PLA_VALIDATION_WARNING                 = 0x80000BF3
	PDH_PLA_ERROR_NAME_TOO_LONG                = 0xC0000BF4
	PDH_INVALID_SQL_LOG_FORMAT                 = 0xC0000BF5
	PDH_COUNTER_ALREADY_IN_QUERY               = 0xC0000BF6
	PDH_BINARY_LOG_CORRUPT                     = 0xC0000BF7
	PDH_LOG_SAMPLE_TOO_SMALL                   = 0xC0000BF8
	PDH_OS_LATER_VERSION                       = 0xC0000BF9
	PDH_OS_EARLIER_VERSION                     = 0xC0000BFA
	PDH_INCORRECT_APPEND_TIME                  = 0xC0000BFB
	PDH_UNMATCHED_APPEND_COUNTER               = 0xC0000BFC
	PDH_SQL_ALTER_DETAIL_FAILED                = 0xC0000BFD
	PDH_QUERY_PERF_DATA_TIMEOUT                = 0xC0000BFE
)

PDH error codes, which can be returned by all Pdh* functions. Taken from mingw-w64 pdhmsg.h

View Source 
const (
	PDH_FMT_DOUBLE = 0x00000200 // Return data as a double precision floating point real.
)

Formatting options for GetFormattedCounterValue().

Variables

This section is empty.

Functions

func PdhAddEnglishCounter_1 added in v0.2.1 

func PdhAddEnglishCounter_1(hQuery uintptr, szFullCounterPath string, dwUserData uintptr) (ret uint32, phCounter uintptr)

func PdhCloseQuery 

func PdhCloseQuery(hQuery uintptr) uint32

Closes all counters contained in the specified query, closes all handles related to the query, and frees all memory associated with the query.

func PdhCollectQueryData 

func PdhCollectQueryData(hQuery uintptr) uint32

The PdhCollectQueryData will return an error in the first call because it needs two values for displaying the correct data for the processor idle time. The second call will have a 0 return code.

func PdhGetFormattedCounterValueDouble 

func PdhGetFormattedCounterValueDouble(hCounter uintptr, lpdwType uint32, pValue *PDH_FMT_COUNTERVALUE_DOUBLE) uint32

Formats the given hCounter using a 'double'. The result is set into the specialized union struct pValue. This function does not directly translate to a Windows counterpart due to union specialization tricks.

func PdhOpenQuery_1 added in v0.2.1 

func PdhOpenQuery_1(szDataSource uintptr, dwUserData uintptr) (uint32, uintptr)

func PdhValidatePath 

func PdhValidatePath(path string) uint32

Validates a path. Will return ERROR_SUCCESS when ok, or PDH_CSTATUS_BAD_COUNTERNAME when the path is erroneous.

func UTF16PtrToString 

func UTF16PtrToString(s *uint16) string

Types

type HANDLE 

type HANDLE uintptr // query handle

type PDH_FMT_COUNTERVALUE_DOUBLE 

type PDH_FMT_COUNTERVALUE_DOUBLE struct {
	CStatus     uint32
	DoubleValue float64
}

// Union specialization for double values

type PDH_FMT_COUNTERVALUE_ITEM_DOUBLE 

type PDH_FMT_COUNTERVALUE_ITEM_DOUBLE struct {
	SzName   *uint16 // pointer to a string
	FmtValue PDH_FMT_COUNTERVALUE_DOUBLE
}

// Union specialization for double values, used by PdhGetFormattedCounterArrayDouble()

type PdhCollectResult 

type PdhCollectResult struct {
	Query     string
	Timestamp time.Time
	Value     float64
	Err       error
}

type PdhCollector 

type PdhCollector struct {
	// contains filtered or unexported fields
}

func NewPdhCollector 

func NewPdhCollector() PdhCollector

func (PdhCollector) AddEnglishCounter 

func (p PdhCollector) AddEnglishCounter(query string)

func (PdhCollector) Close 

func (p PdhCollector) Close()

func (PdhCollector) CollectData 

func (p PdhCollector) CollectData() []*PdhCollectResult

func (PdhCollector) GetHandle 

func (p PdhCollector) GetHandle() uintptr

Source Files

View all Source files

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