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#ifndef _IO_C_ /* -*- linux-c -*- */
#define _IO_C_
#include "transport/transport.c"
/** @file io.c
* @brief I/O functions
*/
/** @addtogroup io I/O
* I/O functions
* @{
*/
/** private buffer for _stp_log() */
#define STP_LOG_BUF_LEN 2047
static char _stp_lbuf[NR_CPUS][STP_LOG_BUF_LEN + 1];
/** Logs Data.
* This function sends the message immediately to stpd.
* @param fmt A variable number of args.
* @note Lines are limited in length by printk buffer. If there is
* no newline in the format string, then other syslog output could
* get appended to the SystemTap line.
* @todo Evaluate if this function is necessary.
*/
void _stp_log (const char *fmt, ...)
{
int num, ret;
char *buf = &_stp_lbuf[get_cpu()][0];
va_list args;
va_start(args, fmt);
num = vscnprintf (buf, STP_LOG_BUF_LEN, fmt, args);
va_end(args);
buf[num] = '\0';
ret = _stp_ctrl_send(STP_REALTIME_DATA, buf, num + 1, t->pid);
if (ret < 0)
atomic_inc (&_stp_transport_failures);
put_cpu();
}
/** @} */
#endif /* _IO_C_ */
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