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Windows NT
Yes
Win95
No
Win32s
No
Import Library
kernel32.lib
Header File
winbase.h
Unicode
No
Platform Notes
None

GetThreadTimes

The GetThreadTimes function obtains timing information about a specified thread.

BOOL GetThreadTimes(

HANDLE hThread,
// specifies the thread of interest
LPFILETIME lpCreationTime,
// when the thread was created
LPFILETIME lpExitTime,
// when the thread was destroyed
LPFILETIME lpKernelTime,
// time the thread has spent in kernel mode
LPFILETIME lpUserTime
// time the thread has spent in user mode
);

Parameters

hThread

An open handle that specifies the thread whose timing information is sought. This handle must be created with THREAD_QUERY_INFORMATION access. For more information, see Thread Objects.

lpCreationTime

Points to a FILETIME structure that receives the creation time of the thread.

lpExitTime

Points to a FILETIME structure that receives the exit time of the thread. If the thread has not exited, the content of this structure is undefined.

lpKernelTime

Points to a FILETIME structure that receives the amount of time that the thread has executed in kernel mode.

lpUserTime

Points to a FILETIME structure that receives the amount of time that the thread has executed in user mode.

Return Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

All times are expressed using FILETIME data structures. Such a structure contains two 32-bit values that combine to form a 64-bit count of 100-nanosecond time units.

Thread creation and exit times are points in time expressed as the amount of time that has elapsed since midnight on January 1, 1601 at Greenwich, England. The Win32 API provides several functions that an application can use to convert such values to more generally useful forms; see Time and Date Functions, and the functions noted in the following See Also section.

Thread kernel mode and user mode times are amounts of time. For example, if a thread has spent one second in kernel mode, this function will fill the FILETIME structure specified by lpKernelTime with a 64-bit value of ten million. That is the number of 100-nanosecond units in one second.

See Also

FILETIME
, FileTimeToDosDateTime, FileTimeToLocalFileTime, FileTimeToSystemTime

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