_fwrite_nolock
Writes data to a stream without locking.
Syntax
size_t _fwrite_nolock(
const void *buffer,
size_t size,
size_t count,
FILE *stream
);
Parameters
buffer
Pointer to the data to be written.
size
Item size in bytes.
count
Maximum number of items to be written.
stream
Pointer to the FILE structure.
Return value
Same as fwrite.
Remarks
This function is a non-locking version of fwrite. It's identical to fwrite except that it isn't protected from interference by other threads. It might be faster because it doesn't incur the overhead of locking out other threads. Use this function only in thread-safe contexts such as single-threaded applications or where the calling scope already handles thread isolation.
By default, this function's global state is scoped to the application. To change this behavior, see Global state in the CRT.
Requirements
| Function | Required header |
|---|---|
_fwrite_nolock |
<stdio.h> |
For more compatibility information, see Compatibility.
Example
See the example for fread.