1 /* Blue Sky: File Systems in the Cloud
3 * Copyright (C) 2009 The Regents of the University of California
4 * Written by Michael Vrable <mvrable@cs.ucsd.edu>
15 #include "bluesky-private.h"
17 /* Debugging support for BlueSky. */
19 static void inode_dump(gpointer key, gpointer value, gpointer user_data)
21 BlueSkyInode *inode = (BlueSkyInode *)value;
23 g_print("Inode %"PRIu64":\n", inode->inum);
25 gboolean locked = TRUE;
26 if (g_mutex_trylock(inode->lock)) {
28 g_mutex_unlock(inode->lock);
30 g_print(" Locked: %c Refcount: %d\n",
31 locked ? 'T' : 'F', inode->refcount);
33 g_print(" Type: %d Mode: %o\n", inode->type, inode->mode);
34 g_print(" change_count = %"PRIu64", change_commit = %"PRIu64"\n",
35 inode->change_count, inode->change_commit);
38 static void cloudlog_dump(gpointer key, gpointer value, gpointer user_data)
40 BlueSkyCloudLog *log = (BlueSkyCloudLog *)value;
42 for (int i = 0; i < sizeof(BlueSkyCloudID); i++) {
43 g_print("%02x", (uint8_t)(log->id.bytes[i]));
45 g_print(": ty=%d inode=%"PRIu64" locs=%x\n",
46 log->type, log->inum, log->location_flags);
49 /* Dump a summary of filesystem state as it is cached in memory. */
50 void bluesky_debug_dump(BlueSkyFS *fs)
52 g_print("*** DEBUG DUMP FOR FILESYSTEM %s ***\n", fs->name);
53 g_print("Cached blocks: %d\tDirty blocks: %d\n",
54 g_atomic_int_get(&fs->cache_total),
55 g_atomic_int_get(&fs->cache_dirty));
56 g_print("Cached inodes: %u\tNext inode: %"PRIu64"\n",
57 g_hash_table_size(fs->inodes), fs->next_inum);
60 g_print("Unsynced inode list:");
61 for (item = fs->unlogged_list.next; item != NULL; item = item->next) {
62 g_print(" %"PRIu64";", ((BlueSkyInode *)item->data)->inum);
65 g_print("Dirty inode LRU list:");
66 for (item = fs->dirty_list.next; item != NULL; item = item->next) {
67 g_print(" %"PRIu64";", ((BlueSkyInode *)item->data)->inum);
70 g_print("Accessed inode LRU list:");
71 for (item = fs->accessed_list.next; item != NULL; item = item->next) {
72 g_print(" %"PRIu64";", ((BlueSkyInode *)item->data)->inum);
76 g_hash_table_foreach(fs->inodes, inode_dump, fs);
78 g_print("\nLog Objects:\n");
79 g_hash_table_foreach(fs->locations, cloudlog_dump, fs);
83 /* Statistics counters: for operation counts, bytes transferred, etc. */
84 static GStaticMutex stats_lock = G_STATIC_MUTEX_INIT;
85 static GList *stats_list = NULL;
87 struct bluesky_stats *bluesky_stats_new(const char *name)
89 struct bluesky_stats *stats = g_new0(struct bluesky_stats, 1);
91 g_static_mutex_lock(&stats_lock);
92 stats_list = g_list_append(stats_list, stats);
93 g_static_mutex_unlock(&stats_lock);
97 void bluesky_stats_add(struct bluesky_stats *stats, int64_t value)
99 __sync_fetch_and_add(&stats->count, (int64_t)1);
100 __sync_fetch_and_add(&stats->sum, value);
103 void bluesky_stats_dump_all()
105 g_static_mutex_lock(&stats_lock);
106 for (GList *item = stats_list; item != NULL; item = item->next) {
107 struct bluesky_stats *stats = (struct bluesky_stats *)item->data;
108 g_print("%s: count=%"PRIi64" sum=%"PRIi64"\n",
109 stats->name, stats->count, stats->sum);
111 g_static_mutex_unlock(&stats_lock);