_ftell_nolock, _ftelli64_nolock
Gets the current position of a file pointer, without locking the thread.
long _ftell_nolock(
FILE *stream
);
__int64 _ftelli64_nolock(
FILE *stream
);
Parameters
- stream
Target the FILE structure.
Return Value
Same as ftell and _ftelli64. For more information, see ftell, _ftelli64.
Remarks
These functions are non-locking versions of ftell and _ftelli64, respectively. They are identical to ftell and _ftelli64except that they are not protected from interference by other threads. These functions might be faster because they do not incur the overhead of locking out other threads. Use these functions only in thread-safe contexts such as single-threaded applications or where the calling scope already handles thread isolation.
Requirements
Function |
Required header |
Optional header |
|---|---|---|
ftell_nolock |
<stdio.h> |
<errno.h> |
_ftelli64_nolock |
<stdio.h> |
<errno.h> |
For more compatibility information, see Compatibility in the Introduction.
.NET Framework Equivalent
System::IO::FileStream::Position