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/**
* cg-tools -- Cooperative gamma-enabled tools
* Copyright (C) 2016 Mattias Andrée (maandree@kth.se)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _DEFAULT_SOURCE
#define _BSD_SOURCE
#include <libcoopgamma.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
const char* argv0;
static int initialise_proc(void)
{
sigset_t sigmask;
int sig;
for (sig = 1; sig < _NSIG; sig++)
if (signal(sig, SIG_DFL) == SIG_ERR)
if (sig == SIGCHLD)
return -1;
if (sigemptyset(&sigmask) < 0)
return -1;
if (sigprocmask(SIG_SETMASK, &sigmask, NULL) < 0)
return -1;
return 0;
}
static int list_methods(void)
{
char** list;
size_t i;
list = libcoopgamma_get_methods();
if (list == NULL)
return -1;
for (i = 0; list[i]; i++)
printf("%s\n", list[i]);
free(list);
if (fflush(stdout) < 0)
return -1;
return 0;
}
static int list_crtcs(libcoopgamma_context_t* restrict cg)
{
char** list;
size_t i;
list = libcoopgamma_get_crtcs_sync(cg);
if (list == NULL)
return -1;
for (i = 0; list[i]; i++)
printf("%s\n", list[i]);
free(list);
if (fflush(stdout) < 0)
return -1;
return 0;
}
int main(int argc, char* argv[])
{
libcoopgamma_context_t cg;
int init_failed = 0;
int stage = 0;
argv0 = argv[0];
if (initialise_proc() < 0)
goto fail;
if (list_methods() < 0)
goto fail;
if (libcoopgamma_context_initialise(&cg) < 0)
goto fail;
stage++;
if (libcoopgamma_connect(NULL, NULL, &cg) < 0)
{
init_failed = (errno == 0);
goto fail;
}
stage++;
if (list_crtcs(&cg) < 0)
goto fail;
libcoopgamma_context_destroy(&cg, 1);
return 0;
fail:
if (init_failed)
fprintf(stderr, "%s: server failed to initialise\n", argv0);
else
perror(argv0);
if (stage >= 1)
libcoopgamma_context_destroy(&cg, stage >= 2);
return 1;
}
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