#define CI_FLAGS_IN_TREE (1<<0)
#define CI_FLAGS_IN_QUEUE (1<<1)
int flags;
-
+ pthread_cond_t flushed;
cache_item_t *next;
};
static pthread_mutex_t cache_lock = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t cache_cond = PTHREAD_COND_INITIALIZER;
-static pthread_cond_t flush_cond = PTHREAD_COND_INITIALIZER;
-
static int config_write_interval = 300;
static int config_write_jitter = 0;
static int config_flush_interval = 3600;
pthread_cond_broadcast(&cache_cond);
} /* }}} void sig_term_handler */
-static int write_pidfile (void) /* {{{ */
+static int open_pidfile(void) /* {{{ */
{
- pid_t pid;
- char *file;
int fd;
- FILE *fh;
+ char *file;
- pid = getpid ();
-
file = (config_pid_file != NULL)
? config_pid_file
: LOCALSTATEDIR "/run/rrdcached.pid";
fd = open(file, O_CREAT|O_EXCL|O_WRONLY, S_IRUSR|S_IRGRP|S_IROTH);
if (fd < 0)
- {
- RRDD_LOG(LOG_ERR, "FATAL: cannot create '%s' (%s)",
- file, rrd_strerror(errno));
- return (-1);
- }
+ fprintf(stderr, "FATAL: cannot create '%s' (%s)\n",
+ file, rrd_strerror(errno));
+
+ return(fd);
+}
+
+static int write_pidfile (int fd) /* {{{ */
+{
+ pid_t pid;
+ FILE *fh;
+
+ pid = getpid ();
fh = fdopen (fd, "w");
if (fh == NULL)
{
- RRDD_LOG (LOG_ERR, "write_pidfile: Opening `%s' failed.", file);
+ RRDD_LOG (LOG_ERR, "write_pidfile: fdopen() failed.");
close(fd);
return (-1);
}
if (max_age > 0)
cfd.abs_timeout = cfd.now - max_age;
else
- cfd.abs_timeout = cfd.now + 1;
+ cfd.abs_timeout = cfd.now + 2*config_write_jitter + 1;
/* `tree_callback_flush' will return the keys of all values that haven't
* been touched in the last `config_flush_interval' seconds in `cfd'.
}
journal_write("wrote", file);
+ pthread_cond_broadcast(&ci->flushed);
for (i = 0; i < values_num; i++)
free (values[i]);
}
pthread_mutex_lock (&cache_lock);
- pthread_cond_broadcast (&flush_cond);
/* We're about to shut down, so lets flush the entire tree. */
if ((do_shutdown != 0) && (cache_queue_head == NULL))
enqueue_cache_item (ci, HEAD);
pthread_cond_signal (&cache_cond);
- while ((ci->flags & CI_FLAGS_IN_QUEUE) != 0)
- {
- ci = NULL;
-
- pthread_cond_wait (&flush_cond, &cache_lock);
-
- ci = g_tree_lookup (cache_tree, filename);
- if (ci == NULL)
- {
- RRDD_LOG (LOG_ERR, "flush_file: Tree node went away "
- "while waiting for flush.");
- pthread_mutex_unlock (&cache_lock);
- return (-1);
- }
- }
+ pthread_cond_wait(&ci->flushed, &cache_lock);
+ pthread_mutex_unlock(&cache_lock);
- pthread_mutex_unlock (&cache_lock);
return (0);
} /* }}} int flush_file */
pthread_mutex_unlock(&stats_lock);
pthread_mutex_lock (&cache_lock);
-
ci = g_tree_lookup (cache_tree, file);
+
if (ci == NULL) /* {{{ */
{
struct stat statbuf;
+ /* don't hold the lock while we setup; stat(2) might block */
+ pthread_mutex_unlock(&cache_lock);
+
memset (&statbuf, 0, sizeof (statbuf));
status = stat (file, &statbuf);
if (status != 0)
{
- pthread_mutex_unlock (&cache_lock);
RRDD_LOG (LOG_NOTICE, "handle_request_update: stat (%s) failed.", file);
status = errno;
}
if (!S_ISREG (statbuf.st_mode))
{
- pthread_mutex_unlock (&cache_lock);
-
snprintf (answer, sizeof (answer), "-1 Not a regular file: %s\n", file);
RRDD_UPDATE_SEND;
return (0);
}
if (access(file, R_OK|W_OK) != 0)
{
- pthread_mutex_unlock (&cache_lock);
-
snprintf (answer, sizeof (answer), "-1 Cannot read/write %s: %s\n",
file, rrd_strerror(errno));
RRDD_UPDATE_SEND;
ci = (cache_item_t *) malloc (sizeof (cache_item_t));
if (ci == NULL)
{
- pthread_mutex_unlock (&cache_lock);
RRDD_LOG (LOG_ERR, "handle_request_update: malloc failed.");
strncpy (answer, "-1 malloc failed.\n", sizeof (answer));
ci->file = strdup (file);
if (ci->file == NULL)
{
- pthread_mutex_unlock (&cache_lock);
free (ci);
RRDD_LOG (LOG_ERR, "handle_request_update: strdup failed.");
_wipe_ci_values(ci, now);
ci->flags = CI_FLAGS_IN_TREE;
+ pthread_mutex_lock(&cache_lock);
g_tree_insert (cache_tree, (void *) ci->file, (void *) ci);
} /* }}} */
assert (ci != NULL);
status = handle_request (fd, buffer, /*buffer_size=*/ status);
if (status != 0)
- {
- close (fd);
break;
- }
}
+ close(fd);
+
self = pthread_self ();
/* Remove this thread from the connection threads list */
pthread_mutex_lock (&connection_threads_lock);
return (0);
} /* }}} int open_listen_socket_unix */
-static int open_listen_socket (const char *addr) /* {{{ */
+static int open_listen_socket (const char *addr_orig) /* {{{ */
{
struct addrinfo ai_hints;
struct addrinfo *ai_res;
struct addrinfo *ai_ptr;
+ char addr_copy[NI_MAXHOST];
+ char *addr;
+ char *port;
int status;
- assert (addr != NULL);
+ assert (addr_orig != NULL);
+
+ strncpy (addr_copy, addr_orig, sizeof (addr_copy));
+ addr_copy[sizeof (addr_copy) - 1] = 0;
+ addr = addr_copy;
if (strncmp ("unix:", addr, strlen ("unix:")) == 0)
return (open_listen_socket_unix (addr + strlen ("unix:")));
ai_hints.ai_family = AF_UNSPEC;
ai_hints.ai_socktype = SOCK_STREAM;
+ port = NULL;
+ if (*addr == '[') /* IPv6+port format */
+ {
+ /* `addr' is something like "[2001:780:104:2:211:24ff:feab:26f8]:12345" */
+ addr++;
+
+ port = strchr (addr, ']');
+ if (port == NULL)
+ {
+ RRDD_LOG (LOG_ERR, "open_listen_socket: Malformed address: %s",
+ addr_orig);
+ return (-1);
+ }
+ *port = 0;
+ port++;
+
+ if (*port == ':')
+ port++;
+ else if (*port == 0)
+ port = NULL;
+ else
+ {
+ RRDD_LOG (LOG_ERR, "open_listen_socket: Garbage after address: %s",
+ port);
+ return (-1);
+ }
+ } /* if (*addr = ']') */
+ else if (strchr (addr, '.') != NULL) /* Hostname or IPv4 */
+ {
+ port = rindex(addr, ':');
+ if (port != NULL)
+ {
+ *port = 0;
+ port++;
+ }
+ }
ai_res = NULL;
- status = getaddrinfo (addr, RRDCACHED_DEFAULT_PORT, &ai_hints, &ai_res);
+ status = getaddrinfo (addr,
+ port == NULL ? RRDCACHED_DEFAULT_PORT : port,
+ &ai_hints, &ai_res);
if (status != 0)
{
RRDD_LOG (LOG_ERR, "open_listen_socket: getaddrinfo(%s) failed: "
{
int fd;
listen_socket_t *temp;
+ int one = 1;
temp = (listen_socket_t *) realloc (listen_fds,
sizeof (listen_fds[0]) * (listen_fds_num + 1));
continue;
}
+ setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one));
+
status = bind (fd, ai_ptr->ai_addr, ai_ptr->ai_addrlen);
if (status != 0)
{
pollfds[i].revents = 0;
}
- status = poll (pollfds, pollfds_num, /* timeout = */ -1);
- if (status < 1)
+ status = poll (pollfds, pollfds_num, /* timeout = */ 1000);
+ if (status == 0)
+ {
+ continue; /* timeout */
+ }
+ else if (status < 0)
{
status = errno;
if (status != EINTR)
static int daemonize (void) /* {{{ */
{
int status;
+ int fd;
/* These structures are static, because `sigaction' behaves weird if the are
* overwritten.. */
static struct sigaction sa_term;
static struct sigaction sa_pipe;
+ fd = open_pidfile();
+ if (fd < 0) return fd;
+
if (!stay_foreground)
{
pid_t child;
return (-1);
}
- status = write_pidfile ();
+ status = write_pidfile (fd);
return status;
} /* }}} int daemonize */
projects / rrdtool.git / blobdiff