8 struct rb_node rb_node;
12 /* Should perhaps be moved to struct machine */
13 static struct rb_root comm_str_root;
15 static void comm_str__get(struct comm_str *cs)
20 static void comm_str__put(struct comm_str *cs)
23 rb_erase(&cs->rb_node, &comm_str_root);
29 static struct comm_str *comm_str__alloc(const char *str)
33 cs = zalloc(sizeof(*cs));
37 cs->str = strdup(str);
46 static struct comm_str *comm_str__findnew(const char *str, struct rb_root *root)
48 struct rb_node **p = &root->rb_node;
49 struct rb_node *parent = NULL;
50 struct comm_str *iter, *new;
55 iter = rb_entry(parent, struct comm_str, rb_node);
57 cmp = strcmp(str, iter->str);
67 new = comm_str__alloc(str);
71 rb_link_node(&new->rb_node, parent, p);
72 rb_insert_color(&new->rb_node, root);
77 struct comm *comm__new(const char *str, u64 timestamp)
79 struct comm *comm = zalloc(sizeof(*comm));
84 comm->start = timestamp;
86 comm->comm_str = comm_str__findnew(str, &comm_str_root);
87 if (!comm->comm_str) {
92 comm_str__get(comm->comm_str);
97 int comm__override(struct comm *comm, const char *str, u64 timestamp)
99 struct comm_str *new, *old = comm->comm_str;
101 new = comm_str__findnew(str, &comm_str_root);
107 comm->comm_str = new;
108 comm->start = timestamp;
113 void comm__free(struct comm *comm)
115 comm_str__put(comm->comm_str);
119 const char *comm__str(const struct comm *comm)
121 return comm->comm_str->str;