GetThreadTimes
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4/8/2010
This function obtains timing information about a specified thread.
Syntax
BOOL GetThreadTimes (
HANDLE hThread,
LPFILETIME lpCreationTime,
LPFILETIME lpExitTime,
LPFILETIME lpKernelTime,
LPFILETIME lpUserTime
);
Parameters
hThread
[in] Open handle that specifies the thread whose timing information is sought.This handle must be created with THREAD_QUERY_INFORMATION access.
- lpCreationTime
[out] Long pointer to a FILETIME structure that receives the creation time of the thread.
lpExitTime
[out] Long pointer 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
[out] Long pointer to a FILETIME structure that receives the amount of time the thread executed in kernel mode.
- lpUserTime
[out] Pointer to a FILETIME structure that receives the amount of time the thread executed in user mode.
Return Value
Nonzero indicates success. Zero indicates failure. 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.
Thread kernel mode and user mode times are amounts of time. For example, if a thread spends one second in kernel mode, this function fills 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.
The following support restrictions are set for GetThreadTimes for Windows CE 2.10 through 2.12:
- The lpCreationTime, lpExitTime, and lpKernelTime parameters are not supported. They are always returned as zero.
- The lpUserTime parameter reports the total time a thread has been running. There is no distinction between user and kernel modes.
- The lpUserTime parameter is not valid when the thread exits.
Requirements
| Header | winbase.h |
| Library | coredll.lib |
| Windows Embedded CE | Windows CE 2.10 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |