#include "rrd_client.h"
#include <stdlib.h>
+
+#ifndef WIN32
#include <stdint.h>
-#include <stdio.h>
#include <unistd.h>
-#include <string.h>
#include <strings.h>
-#include <stdint.h>
#include <inttypes.h>
+# include <sys/socket.h>
+
+#else
+
+#endif
+#include <stdio.h>
+#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
-#include <sys/socket.h>
#include <sys/un.h>
#include <netdb.h>
#include <poll.h>
static int do_shutdown = 0;
-static pthread_t queue_thread;
+static pthread_t *queue_threads;
+static pthread_cond_t queue_cond = PTHREAD_COND_INITIALIZER;
+static int config_queue_threads = 4;
+
+static pthread_t flush_thread;
+static pthread_cond_t flush_cond = PTHREAD_COND_INITIALIZER;
static pthread_t *connection_threads = NULL;
static pthread_mutex_t connection_threads_lock = PTHREAD_MUTEX_INITIALIZER;
static cache_item_t *cache_queue_head = NULL;
static cache_item_t *cache_queue_tail = NULL;
static pthread_mutex_t cache_lock = PTHREAD_MUTEX_INITIALIZER;
-static pthread_cond_t cache_cond = PTHREAD_COND_INITIALIZER;
static int config_write_interval = 300;
static int config_write_jitter = 0;
{
RRDD_LOG(LOG_NOTICE, "caught SIG%s", sig);
do_shutdown++;
- pthread_cond_broadcast(&cache_cond);
+ pthread_cond_broadcast(&flush_cond);
+ pthread_cond_broadcast(&queue_cond);
} /* }}} void sig_common */
static void sig_int_handler (int s __attribute__((unused))) /* {{{ */
assert(sock != NULL);
- new_buf = realloc(sock->wbuf, sock->wbuf_len + len + 1);
+ new_buf = rrd_realloc(sock->wbuf, sock->wbuf_len + len + 1);
if (new_buf == NULL)
{
RRDD_LOG(LOG_ERR, "add_to_wbuf: realloc failed");
ci->next = ci->prev = NULL;
ci->flags &= ~CI_FLAGS_IN_QUEUE;
+
+ pthread_mutex_lock (&stats_lock);
+ assert (stats_queue_length > 0);
+ stats_queue_length--;
+ pthread_mutex_unlock (&stats_lock);
+
} /* }}} static void remove_from_queue */
/* free the resources associated with the cache_item_t
ci->flags |= CI_FLAGS_IN_QUEUE;
- pthread_cond_broadcast(&cache_cond);
+ pthread_cond_signal(&queue_cond);
pthread_mutex_lock (&stats_lock);
stats_queue_length++;
pthread_mutex_unlock (&stats_lock);
/*
* tree_callback_flush:
- * Called via `g_tree_foreach' in `queue_thread_main'. `cache_lock' is held
+ * Called via `g_tree_foreach' in `flush_thread_main'. `cache_lock' is held
* while this is in progress.
*/
static gboolean tree_callback_flush (gpointer key, gpointer value, /* {{{ */
{
char **temp;
- temp = (char **) realloc (cfd->keys,
+ temp = (char **) rrd_realloc (cfd->keys,
sizeof (char *) * (cfd->keys_num + 1));
if (temp == NULL)
{
return (0);
} /* int flush_old_values */
-static void *queue_thread_main (void *args __attribute__((unused))) /* {{{ */
+static void *flush_thread_main (void *args __attribute__((unused))) /* {{{ */
{
struct timeval now;
struct timespec next_flush;
- int final_flush = 0; /* make sure we only flush once on shutdown */
+ int status;
gettimeofday (&now, NULL);
next_flush.tv_sec = now.tv_sec + config_flush_interval;
next_flush.tv_nsec = 1000 * now.tv_usec;
- pthread_mutex_lock (&cache_lock);
- while ((do_shutdown == 0) || (cache_queue_head != NULL))
- {
- cache_item_t *ci;
- char *file;
- char **values;
- int values_num;
- int status;
- int i;
+ pthread_mutex_lock(&cache_lock);
- /* First, check if it's time to do the cache flush. */
+ while (!do_shutdown)
+ {
gettimeofday (&now, NULL);
if ((now.tv_sec > next_flush.tv_sec)
|| ((now.tv_sec == next_flush.tv_sec)
pthread_mutex_lock(&cache_lock);
}
+ status = pthread_cond_timedwait(&flush_cond, &cache_lock, &next_flush);
+ if (status != 0 && status != ETIMEDOUT)
+ {
+ RRDD_LOG (LOG_ERR, "flush_thread_main: "
+ "pthread_cond_timedwait returned %i.", status);
+ }
+ }
+
+ if (config_flush_at_shutdown)
+ flush_old_values (-1); /* flush everything */
+
+ pthread_mutex_unlock(&cache_lock);
+
+ return NULL;
+} /* void *flush_thread_main */
+
+static void *queue_thread_main (void *args __attribute__((unused))) /* {{{ */
+{
+ pthread_mutex_lock (&cache_lock);
+
+ while (!do_shutdown
+ || (cache_queue_head != NULL && config_flush_at_shutdown))
+ {
+ cache_item_t *ci;
+ char *file;
+ char **values;
+ int values_num;
+ int status;
+ int i;
+
/* Now, check if there's something to store away. If not, wait until
- * something comes in or it's time to do the cache flush. if we are
- * shutting down, do not wait around. */
+ * something comes in. if we are shutting down, do not wait around. */
if (cache_queue_head == NULL && !do_shutdown)
{
- status = pthread_cond_timedwait (&cache_cond, &cache_lock, &next_flush);
+ status = pthread_cond_wait (&queue_cond, &cache_lock);
if ((status != 0) && (status != ETIMEDOUT))
{
RRDD_LOG (LOG_ERR, "queue_thread_main: "
- "pthread_cond_timedwait returned %i.", status);
+ "pthread_cond_wait returned %i.", status);
}
}
- /* We're about to shut down */
- if (do_shutdown != 0 && !final_flush++)
- {
- if (config_flush_at_shutdown)
- flush_old_values (-1); /* flush everything */
- else
- break;
- }
-
/* Check if a value has arrived. This may be NULL if we timed out or there
* was an interrupt such as a signal. */
if (cache_queue_head == NULL)
wipe_ci_values(ci, time(NULL));
remove_from_queue(ci);
- pthread_mutex_lock (&stats_lock);
- assert (stats_queue_length > 0);
- stats_queue_length--;
- pthread_mutex_unlock (&stats_lock);
-
pthread_mutex_unlock (&cache_lock);
rrd_clear_error ();
}
pthread_mutex_lock (&cache_lock);
-
- /* We're about to shut down */
- if (do_shutdown != 0 && !final_flush++)
- {
- if (config_flush_at_shutdown)
- flush_old_values (-1); /* flush everything */
- else
- break;
- }
- } /* while ((do_shutdown == 0) || (cache_queue_head != NULL)) */
- pthread_mutex_unlock (&cache_lock);
-
- if (config_flush_at_shutdown)
- {
- assert(cache_queue_head == NULL);
- RRDD_LOG(LOG_INFO, "clean shutdown; all RRDs flushed");
}
-
- journal_done();
+ pthread_mutex_unlock (&cache_lock);
return (NULL);
} /* }}} void *queue_thread_main */
"FLUSHALL\n"
"PENDING <filename>\n"
"FORGET <filename>\n"
+ "QUEUE\n"
"UPDATE <filename> <values> [<values> ...]\n"
"BATCH\n"
"STATS\n"
+ "QUIT\n"
};
char *help_flush[2] =
"Usage: FLUSH <filename>\n"
"\n"
"Adds the given filename to the head of the update queue and returns\n"
- "after is has been dequeued.\n"
+ "after it has been dequeued.\n"
};
char *help_flushall[2] =
"Any pending updates for the file will be lost.\n"
};
+ char *help_queue[2] =
+ {
+ "Help for QUEUE\n"
+ ,
+ "Shows all files in the output queue.\n"
+ "The output is zero or more lines in the following format:\n"
+ "(where <num_vals> is the number of values to be written)\n"
+ "\n"
+ "<num_vals> <filename>\n"
+ "\n"
+ };
+
char *help_update[2] =
{
"Help for UPDATE\n"
"For more information, consult the rrdcached(1) documentation.\n"
};
+ char *help_quit[2] =
+ {
+ "Help for QUIT\n"
+ ,
+ "Disconnect from rrdcached.\n"
+ };
+
status = buffer_get_field (&buffer, &buffer_size, &command);
if (status != 0)
help_text = help_help;
help_text = help_pending;
else if (strcasecmp (command, "forget") == 0)
help_text = help_forget;
+ else if (strcasecmp (command, "queue") == 0)
+ help_text = help_queue;
else if (strcasecmp (command, "stats") == 0)
help_text = help_stats;
else if (strcasecmp (command, "batch") == 0)
help_text = help_batch;
+ else if (strcasecmp (command, "quit") == 0)
+ help_text = help_quit;
else
help_text = help_help;
}
assert(1==0);
} /* }}} static int handle_request_forget */
+static int handle_request_queue (listen_socket_t *sock) /* {{{ */
+{
+ cache_item_t *ci;
+
+ pthread_mutex_lock(&cache_lock);
+
+ ci = cache_queue_head;
+ while (ci != NULL)
+ {
+ add_response_info(sock, "%d %s\n", ci->values_num, ci->file);
+ ci = ci->next;
+ }
+
+ pthread_mutex_unlock(&cache_lock);
+
+ return send_response(sock, RESP_OK, "in queue.\n");
+} /* }}} int handle_request_queue */
+
static int handle_request_update (listen_socket_t *sock, /* {{{ */
time_t now,
char *buffer, size_t buffer_size)
else
ci->last_update_stamp = stamp;
- temp = (char **) realloc (ci->values,
+ temp = (char **) rrd_realloc (ci->values,
sizeof (char *) * (ci->values_num + 1));
if (temp == NULL)
{
return (handle_request_pending(sock, buffer_ptr, buffer_size));
else if (strcasecmp (command, "forget") == 0)
return (handle_request_forget(sock, buffer_ptr, buffer_size));
+ else if (strcasecmp (command, "queue") == 0)
+ return (handle_request_queue(sock));
else if (strcasecmp (command, "stats") == 0)
return (handle_request_stats (sock));
else if (strcasecmp (command, "help") == 0)
{
pthread_t *temp;
- temp = (pthread_t *) realloc (connection_threads,
+ temp = (pthread_t *) rrd_realloc (connection_threads,
sizeof (pthread_t) * (connection_threads_num + 1));
if (temp == NULL)
{
connection_threads_num--;
- temp = realloc(connection_threads,
+ temp = rrd_realloc(connection_threads,
sizeof(*connection_threads) * connection_threads_num);
if (connection_threads_num > 0 && temp == NULL)
RRDD_LOG(LOG_ERR, "connection_thread_main: realloc(--) failed.");
if (strncmp(path, "unix:", strlen("unix:")) == 0)
path += strlen("unix:");
- temp = (listen_socket_t *) realloc (listen_fds,
+ temp = (listen_socket_t *) rrd_realloc (listen_fds,
sizeof (listen_fds[0]) * (listen_fds_num + 1));
if (temp == NULL)
{
listen_socket_t *temp;
int one = 1;
- temp = (listen_socket_t *) realloc (listen_fds,
+ temp = (listen_socket_t *) rrd_realloc (listen_fds,
sizeof (listen_fds[0]) * (listen_fds_num + 1));
if (temp == NULL)
{
{
do_shutdown++;
- pthread_cond_signal (&cache_cond);
- pthread_join (queue_thread, /* return = */ NULL);
+ pthread_cond_broadcast (&flush_cond);
+ pthread_join (flush_thread, NULL);
+
+ pthread_cond_broadcast (&queue_cond);
+ for (int i = 0; i < config_queue_threads; i++)
+ pthread_join (queue_threads[i], NULL);
+
+ if (config_flush_at_shutdown)
+ {
+ assert(cache_queue_head == NULL);
+ RRDD_LOG(LOG_INFO, "clean shutdown; all RRDs flushed");
+ }
+ journal_done();
remove_pidfile ();
+ free(queue_threads);
free(config_base_dir);
free(config_pid_file);
free(journal_cur);
int option;
int status = 0;
- while ((option = getopt(argc, argv, "gl:L:f:w:b:Bz:p:j:h?F")) != -1)
+ while ((option = getopt(argc, argv, "gl:L:f:w:z:t:Bb:p:Fj:h?")) != -1)
{
switch (option)
{
}
memset(new, 0, sizeof(listen_socket_t));
- temp = (listen_socket_t **) realloc (config_listen_address_list,
+ temp = (listen_socket_t **) rrd_realloc (config_listen_address_list,
sizeof (listen_socket_t *) * (config_listen_address_list_len + 1));
if (temp == NULL)
{
break;
}
+ case 't':
+ {
+ int threads;
+ threads = atoi(optarg);
+ if (threads >= 1)
+ config_queue_threads = threads;
+ else
+ {
+ fprintf (stderr, "Invalid thread count: -t %s\n", optarg);
+ return 1;
+ }
+ }
+ break;
+
case 'B':
config_write_base_only = 1;
break;
" -L <address> Socket address to listen to ('FLUSH' only).\n"
" -w <seconds> Interval in which to write data.\n"
" -z <delay> Delay writes up to <delay> seconds to spread load\n"
+ " -t <threads> Number of write threads.\n"
" -f <seconds> Interval in which to flush dead data.\n"
" -p <file> Location of the PID-file.\n"
" -b <dir> Base directory to change to.\n"
journal_init();
- /* start the queue thread */
- memset (&queue_thread, 0, sizeof (queue_thread));
- status = pthread_create (&queue_thread,
- NULL, /* attr */
- queue_thread_main,
- NULL); /* args */
+ /* start the queue threads */
+ queue_threads = calloc(config_queue_threads, sizeof(*queue_threads));
+ if (queue_threads == NULL)
+ {
+ RRDD_LOG (LOG_ERR, "FATAL: cannot calloc queue threads");
+ cleanup();
+ return (1);
+ }
+ for (int i = 0; i < config_queue_threads; i++)
+ {
+ memset (&queue_threads[i], 0, sizeof (*queue_threads));
+ status = pthread_create (&queue_threads[i], NULL, queue_thread_main, NULL);
+ if (status != 0)
+ {
+ RRDD_LOG (LOG_ERR, "FATAL: cannot create queue thread");
+ cleanup();
+ return (1);
+ }
+ }
+
+ /* start the flush thread */
+ memset(&flush_thread, 0, sizeof(flush_thread));
+ status = pthread_create (&flush_thread, NULL, flush_thread_main, NULL);
if (status != 0)
{
- RRDD_LOG (LOG_ERR, "FATAL: cannot create queue thread");
+ RRDD_LOG (LOG_ERR, "FATAL: cannot create flush thread");
cleanup();
return (1);
}
projects / rrdtool.git / blobdiff