Open System Services System Calls Reference Manual (G06.29+, H06.08+, J06.03+)

System Functions (s and S) spt_putwx(2)
#define SPT_THREAD_AWARE_PRAGMA_NONBLOCK
RETURN VALUES
The spt_putwx() function, upon successful completion, returns a value of 0 (zero). Otherwise, it
returns a nonzero value.
If the file descriptor underlying stream becomes invalid (is closed by another thread), a nonzero
value is returned with an errno value of [EBADF]. If a signal is received via the pthread_kill()
function and is not blocked, ignored, or handled, a nonzero value is returned with an errno value
of [EINTR].
ERRORS
The spt_putwx() function fails if either:
• The stream is unbuffered
• The buffer of the stream needs to be flushed and the function call causes an underlying
spt_writex() or lseek() to be invoked, and this underlying operation fails.
In addition, if any of the following conditions occur, the spt_putwx( ) function sets errno to the
corresponding value.
[EAGAIN] The O_NONBLOCK flag is set for the file descriptor underlying stream and the
process would be delayed in the write operation.
[EBADF] The file descriptor underlying stream is not a valid file descriptor open for writ-
ing.
[EFBIG] An attempt was made to write to a file that exceeds the process’s file size limit or
the maximum file size.
[EINTR] The write operation was interrupted by a signal that was caught, and no data was
transferred.
[EIO] The implementation supports job control; the process is a member of a back-
ground process group attempting to write to its controlling terminal; TOSTOP is
set; the process is neither ignoring nor blocking SIGTTOU; and the process
group of the process is orphaned. This error might also be returned under
implementation-defined conditions.
[ENOMEM] Insufficient storage space available.
[ENOSPC] No free space was remaining on the device containing the file.
[ENXIO] A request was made of a nonexistent device, or the request was outside the capa-
bilities of the device.
[EPIPE] An attempt was made to write to a pipe or FIFO that is not open for reading by
any process. A SIGPIPE signal will also be sent to the process.
RELATED INFORMATION
Functions: ferror(3), fputc(3), getc(3), getwc(3), printf(3), putc(3), putchar(3), puts(3),
putwc(3), spt_fputcx(2), spt_getcx(2), spt_getwcx(2), spt_printfx(2), spt_putcx(2),
spt_putcharx(2), spt_putsx(2), spt_putwcx(2).
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