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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| No
| Win32s
| No
| Import Library
| kernel32.lib
| Header File
| winbase.h
| Unicode
| No
| Platform Notes
| None
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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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