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/*
* Copyright (C) 1997-2009 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
/** \file client.c the client program used to connect to para_server */
#include "para.h"
#include "list.h"
#include "sched.h"
#include "client.cmdline.h"
#include "string.h"
#include "stdin.h"
#include "stdout.h"
#include "client.h"
#include "error.h"
INIT_CLIENT_ERRLISTS;
static struct client_task *ct;
static struct stdin_task sit;
static struct stdout_task sot;
static void supervisor_post_select(__a_unused struct sched *s, struct task *t)
{
if (ct->task.error < 0) {
t->error = ct->task.error;
return;
}
if (ct->status == CL_SENDING) {
stdin_set_defaults(&sit);
sit.buf = para_malloc(sit.bufsize),
register_task(&sit.task);
ct->inbuf = sit.buf;
ct->in_loaded = &sit.loaded;
ct->in_error = &sit.task.error;
t->error = -E_TASK_STARTED;
return;
}
if (ct->status == CL_RECEIVING) {
stdout_set_defaults(&sot);
sot.bufp = &ct->buf;
sot.loaded = &ct->loaded;
sot.input_error = &ct->task.error;
register_task(&sot.task);
t->error = -E_TASK_STARTED;
return;
}
}
static struct task svt = {
.post_select = supervisor_post_select,
.status = "supervisor task"
};
static int client_loglevel; /* loglevel */
INIT_STDERR_LOGGING(client_loglevel);
/**
* The client program to connect to para_server.
*
* \param argc Usual argument count.
* \param argv Usual argument vector.
*
* It registers two tasks: The client task that communicates with para_server
* and the standard out task that writes any output produced by the client task
* to standard out.
*
* \return EXIT_SUCCESS or EXIT_FAILURE
*
* \sa client_open(), stdout.c, stdout.h, para_client(1), para_server(1)
*/
int main(int argc, char *argv[])
{
int ret;
static struct sched s;
s.default_timeout.tv_sec = 1;
s.default_timeout.tv_usec = 0;
ret = client_open(argc, argv, &ct, &client_loglevel);
if (ret < 0) /* can not use PARA_LOG here because ct is NULL */
exit(EXIT_FAILURE);
register_task(&svt);
ret = schedule(&s);
if (ret < 0)
PARA_ERROR_LOG("%s\n", para_strerror(-ret));
client_close(ct);
return ret >= 0? EXIT_SUCCESS: EXIT_FAILURE;
}
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