void vtuPerspective(double m[4][4], double fovy, double aspect, double zNear, double zFar)
{
double sine, cotangent, deltaZ;
double radians = fovy / 2.0 * 3.14159265358979323846 / 180.0;
deltaZ = zFar - zNear;
sine = sin(radians);
if ((deltaZ == 0) || (sine == 0) || (aspect == 0))
vt_fatal("Error: perspectve matrix is degenerate");
cotangent = cos(radians) / sine;
m[0][0] = cotangent / aspect;
m[1][1] = cotangent;
m[2][2] = -(zFar + zNear) / deltaZ;
m[2][3] = -1.0;
m[3][2] = -2.0 * zNear * zFar / deltaZ;
}
int
main (int argc, char *argv[])
{
cfg_t *cfg;
char *prog;
char *config_file = "/etc/valiant/valiant.conf";
vt_context_t *ctx;
vt_dict_type_t *types[7];
vt_error_t err;
vt_thread_pool_t *pool;
vt_stats_t *stats, *new_stats;
if ((prog = strrchr (argv[0], '/')))
prog++;
else
prog = argv[0];
/* parse command line options */
int c;
char *short_opts = "c:hV";
struct option long_opts[] = {
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'V'},
{"config-file", required_argument, NULL, 'c'}
};
for (; (c = getopt_long (argc, argv, short_opts, long_opts, NULL)) != EOF; ) {
switch (c) {
case 'c':
config_file = optarg;
break;
case 'h':
help (prog);
break; /* never reached */
case 'V':
version (prog);
break; /* never reached */
default:
usage (prog);
break; /* never reached */
}
}
/* it's important that wathchdog is initialized before any threads are
created because it sets the calling threads signal mask to ignore all
signals */
vt_watchdog_init ();
/* parse configuration file */
if (! (cfg = vt_cfg_parse (config_file)))
return 1;
types[0] = vt_dict_dnsbl_type ();
types[1] = vt_dict_hash_type ();
types[2] = vt_dict_pcre_type ();
types[3] = vt_dict_rhsbl_type ();
types[4] = vt_dict_spf_type ();
types[5] = vt_dict_str_type ();
types[6] = NULL;
if (! (ctx = vt_context_create (types, cfg, &err)))
vt_fatal ("cannot create context: %d", err);
cfg_free (cfg);
// drop priveleges
// fprintf (stderr, "%s (%d)\n", __func__, __LINE__);
// create workers
// create stats printer
stats = vt_stats_create (ctx->dicts, ctx->ndicts, &err);
vt_stats_thread (stats);
vt_worker_arg_t warg;
warg.context = ctx;
warg.stats = stats;
if (! (pool = vt_thread_pool_create ((void *)&warg, ctx->max_threads, &vt_worker, &err)))
return EXIT_FAILURE;
vt_thread_pool_set_max_idle_threads (pool, ctx->max_idle_threads);
vt_thread_pool_set_max_queued (pool, ctx->max_tasks);
vt_debug ("created thread pool");
/* open socket that we will listen on */
struct sockaddr_storage their_addr;
socklen_t addr_size;
struct addrinfo hints, *res;
int sock, conn;
//vt_worker_arg_t *arg;
int *task;
memset (&hints, 0, sizeof (hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
getaddrinfo (NULL, ctx->port, &hints, &res);
sock = socket (res->ai_family, res->ai_socktype, res->ai_protocol);
bind(sock, res->ai_addr, res->ai_addrlen);
listen(sock, 10);
fd_set fds;
struct timeval tv;
int dead, ret;
cfg_t *new_cfg;
vt_context_t *new_ctx;
vt_thread_pool_t *new_pool;
tv.tv_sec = VT_SELECT_TIMEOUT_SECONDS;
tv.tv_usec = VT_SELECT_TIMEOUT_MICROSECONDS;
for (dead = 0; ! dead; ) {
FD_ZERO (&fds);
FD_SET (sock, &fds);
ret = select (sock+1, &fds, NULL, NULL, &tv);
/* always check if we received a signal or not */
switch (vt_watchdog_signal ()) {
case SIGTERM: /* terminate */
dead = 1;
break;
case SIGHUP: /* reload */
new_cfg = NULL;
new_ctx = NULL;
new_pool = NULL;
vt_debug ("%s:%d", __func__, __LINE__);
if (! (new_cfg = vt_cfg_parse (config_file))) {
vt_error ("%s: could not parse %s: reload aborted",
__func__, config_file);
goto failure_reload;
}
vt_debug ("%s:%d", __func__, __LINE__);
if (! (new_ctx = vt_context_create (types, new_cfg, &err))) {
vt_error ("%s: could not create context: reload aborted", __func__);
goto failure_reload;
}
vt_debug ("%s:%d", __func__, __LINE__);
cfg_free (new_cfg);
new_cfg = NULL;
new_stats = vt_stats_create (new_ctx->dicts, new_ctx->ndicts, &err);
vt_stats_thread (stats);
warg.context = new_ctx;
warg.stats = new_stats;
new_pool = vt_thread_pool_create ((void *)&warg,
new_ctx->max_threads, &vt_worker, &err);
vt_debug ("%s:%d", __func__, __LINE__);
if (! new_pool) {
vt_error ("%s: could not create workers: reload aborted", __func__);
goto failure_reload;
}
vt_thread_pool_set_max_idle_threads (new_pool, new_ctx->max_idle_threads);
vt_thread_pool_set_max_queued (new_pool, new_ctx->max_tasks);
vt_debug ("%s:%d", __func__, __LINE__);
vt_stats_destroy (stats, NULL);
vt_cleanup (pool, ctx, 1);
ctx = new_ctx;
pool = new_pool;
stats = new_stats;
break;
failure_reload:
vt_error ("%s:%d", __func__, __LINE__);
if (new_cfg)
cfg_free (new_cfg);
if (new_ctx)
(void)vt_context_destroy (new_ctx, NULL);
if (new_pool)
(void)vt_thread_pool_destroy (new_pool, NULL);
break;
}
if (ret < 0) {
if (errno != EINTR)
vt_fatal ("%s: select: %s", __func__, strerror (errno));
/* ignore */
} else if (ret > 0) {
if ((conn = accept (sock, (struct sockaddr *)&their_addr, &addr_size)) < 0)
vt_fatal ("%s: accept: %s", __func__, strerror (errno));
if (! (task = calloc (1, sizeof (int))))
vt_fatal ("%s: calloc: %s", __func__, strerror (errno));
*task = conn;
vt_thread_pool_push (pool, (void *)task, &err);
// FIXME: handle more errors etc!
}
}
// terminate
(void)close (sock); // probably needs to be done differently!
//
vt_cleanup (pool, ctx, 0);
// 0. close socket
// if there is one... etc!
// 1. kill work force
// 2. kill context
// 3. exit
/* cleanup workers and context */
//vt_thread_pool_destroy (workers, &err);
/* remove pid file */
// IMPLEMENT
return EXIT_SUCCESS;
}