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

System Functions (s and S) spt_vfprintfx(2)
NAME
spt_vfprintfx - Formats a variable number of parameters for output (thread-aware version)
LIBRARY
G-series native OSS processes: /G/system/sysnn/zsptsrl
H-series OSS processes: /G/system/zdllnnn/zsptdll
SYNOPSIS
[#include <stdarg.h>]
[#include <stdio.h>]
#include <spthread.h>
int spt_vfprintfx (
FILE *stream,
const char *format,
va_list printarg
);
PARAMETERS
stream Specifies the output stream.
format Specifies a character string that contains two types of objects:
• Plain characters, which are copied to the output stream.
• Conversion specifications, each of which causes zero or more items to be
fetched from the stdarg parameter lists.
printarg Specifies the parameters to be printed.
DESCRIPTION
The spt_vfprintfx( ) function is the thread-aware version of the vfprintf() function.
The spt_vfprintfx( ) function formats and writes stdarg parameter lists.
This function is the same as the spt_fprintfx( ) function, except that it is not called with a vari-
able number of parameters. Instead, it is called with a parameter list pointer as defined by stdarg.
NOTES
The macro to map vfprintf() to spt_vfprintfx() is available in C applications when
SPT_THREAD_AWARE_NONBLOCK has been defined in the following manner before
including spthread.h:
#define SPT_THREAD_AWARE_NONBLOCK
The alias to link vfprintf() to spt_vfprintfx() is available in C++ applications when
SPT_THREAD_AWARE_PRAGMA_NONBLOCK has been defined in the following manner
before including spthread.h:
#define SPT_THREAD_AWARE_PRAGMA_NONBLOCK
EXAMPLES
The following example demonstrates how you can use the spt_vfprintfx( ) function to write an
error routine:
#include <stdarg.h>
#include <stdio.h>
#define SPT_THREAD_AWARE_NONBLOCK
#include <spthread.h>
void error(char *funct, char *fmt, ...)
527186-023 Hewlett-Packard Company 7−443