vslogf()
QNX SDP8.0C Library ReferenceAPIDeveloper
Send a message to the system logger (varargs)
Synopsis:
#include <stdio.h>
#include <sys/slog.h>
int vslogf( int opcode,
int severity,
const char * fmt,
va_list arg );
Arguments:
- opcode
- A combination of a major and minor code.
Create the opcode using the
_SLOG_SETCODE(major,minor)macro that's defined in <sys/slog.h>.Use major codes in the range
_SLOGC_PRIVATE_STARTand_SLOGC_PRIVATE_ENDin your applications, keeping in mind that many applications already use_SLOGC_TEST, which is(_SLOGC_PRIVATE_START + 0). - severity
- The severity of the log message; see
Severity levels,
in the documentation for slogf(). - fmt
- A standard printf() string.
- arg
- A variable-argument list of the additional arguments, which you must have initialized with the va_start() macro.
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The slog*() functions send log messages to the system logger, slogger2. To send formatted messages, use vslogf(). If you have programs that scan log files for specified codes, you can use slogb() or slogi() to send a block of structures or int's, respectively.
This function is a varargs
version of
slogf().
Classification:
| Safety: | |
|---|---|
| Cancellation point | Yes |
| Signal handler | Yes |
| Thread | Yes |
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