_putch_nolock, _putwch_nolock
Writes a character to the console without locking the thread.
Important
This API cannot be used in applications that execute in the Windows Runtime. For more information, see CRT functions not supported with /ZW.
int _putch_nolock(
int c
);
wint_t _putwch_nolock(
wchar_t c
);
Parameters
- c
Character to be output.
Return Value
Returns c if successful. If _putch_nolock fails, it returns EOF; if _putwch_nolock fails, it returns WEOF.
Remarks
_putch_nolock and _putwch_nolock are identical to _putch and _putwch, respectively, except that they are not protected from interference by other threads. They 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.
Generic-Text Routine Mappings
Tchar.h routine |
_UNICODE and _MBCS not defined |
_MBCS defined |
_UNICODE defined |
|---|---|---|---|
_puttch_nolock |
_putch_nolock |
_putch_nolock |
_putwch_nolock |
Requirements
Routine |
Required header |
|---|---|
_putch_nolock |
<conio.h> |
_putwch_nolock |
<conio.h> |
For more compatibility information, see Compatibility.
Libraries
All versions of the C run-time libraries.