HPL-2010-89 Introduction to Waterken Programming - Stiegler, Marc; Tie, Jing Keyword(s): distributed secure reliable computing Abstract: Waterken is a platform built on the Java virtual machine that allows the quick development of reliable, secure, distributed applications. In this introduction, we will first go over the basic concepts of the Waterken platform. Then we will write two services. The first is a digital cash system. The ... Full Report
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xpaserver(3) SAORD Documentation xpaserver(3)NAME
XPAServer - The XPA Server-side Programming Interface
SYNOPSIS
A description of the XPA server-side programming interface.
DESCRIPTION
Introduction to XPA Server Programming
Creating an XPA server is easy: you generally only need to call the XPANew() subroutine to define a named XPA access point and set up the
send and receive callback routines. You then enter an event loop such as XPAMainLoop() to field XPA requests.
#include <xpa.h>
XPA XPANew(char *class, char *name, char *help,
int (*send_callback)(), void *send_data, char *send_mode,
int (*rec_callback)(), void *rec_data, char *rec_mode);
XPA XPACmdNew(char *class, char *name);
XPACmd XPACmdAdd(XPA xpa,
char *name, char *help,
int (*send_callback)(), void *send_data, char *send_mode,
int (*rec_callback)(), void *rec_data, char *rec_mode);
void XPACmdDel(XPA xpa, XPACmd cmd);
XPA XPAInfoNew(char *class, char *name,
int (*info_callback)(), void *info_data, char *info_mode);
int XPAFree(XPA xpa);
void XPAMainLoop(void);
int XPAPoll(int msec, int maxreq);
void XPAAtExit(void);
void XPACleanup(void);
Introduction
To use the XPA application programming interface, a software developer generally will include the xpa.h definitions file:
#include <xpa.h>
in the software module that defines or accesses an XPA access point, and then will link against the libxpa.a library:
gcc -o foo foo.c libxpa.a
XPA has been compiled using both C and C++ compilers.
A server program generally defines an XPA access point by calling the XPANew() routine and specifies "send" and/or "receive" callback pro-
cedures to be executed by the program when an external process either sends data or commands to this access point or requests data or
information from this access point. A program also can define several sub-commands for a single access point by calling XPACmdNew() and
XPACmdAdd() instead. Having defined one or more public access points in this way, an XPA server program enters its usual event loop (or
uses the standard XPA event loop).
SEE ALSO
See xpa(7) for a list of XPA help pages
version 2.1.14 June 7, 2012 xpaserver(3)
