Method: IO#fdatasync

Defined in:
io.c

#fdatasync ⇒ 0

Immediately writes to disk all data buffered in the stream, via the operating system’s: fdatasync(2), if supported, otherwise via fsync(2), if supported; otherwise raises an exception.

Returns:

  • (0) 


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# File 'io.c', line 2851

static VALUE
rb_io_fdatasync(VALUE io)
{
    rb_io_t *fptr;

    io = GetWriteIO(io);
    GetOpenFile(io, fptr);

    if (io_fflush(fptr) < 0)
        rb_sys_fail_on_write(fptr);

    if ((int)rb_io_blocking_region(fptr, nogvl_fdatasync, fptr) == 0)
        return INT2FIX(0);

    /* fall back */
    return rb_io_fsync(io);
}