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33fec3e393
Currently we have a rblist__delete() which is used to delete a rblist. While rblist__delete() will free the pointer of rblist at the end. It's an inconvenience for the user to delete a rblist which is not allocated by something like malloc(). For example, the rblist is embedded in a larger data structure. This patch creates a new function rblist__exit() which is similar to rblist__delete() but it will not free the pointer of rblist. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1512125856-22056-2-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_RBLIST_H
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#define __PERF_RBLIST_H
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#include <linux/rbtree.h>
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#include <stdbool.h>
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/*
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* create node structs of the form:
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* struct my_node {
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* struct rb_node rb_node;
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* ... my data ...
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* };
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*
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* create list structs of the form:
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* struct mylist {
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* struct rblist rblist;
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* ... my data ...
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* };
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*/
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struct rblist {
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struct rb_root entries;
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unsigned int nr_entries;
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int (*node_cmp)(struct rb_node *rbn, const void *entry);
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struct rb_node *(*node_new)(struct rblist *rlist, const void *new_entry);
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void (*node_delete)(struct rblist *rblist, struct rb_node *rb_node);
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};
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void rblist__init(struct rblist *rblist);
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void rblist__exit(struct rblist *rblist);
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void rblist__delete(struct rblist *rblist);
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int rblist__add_node(struct rblist *rblist, const void *new_entry);
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void rblist__remove_node(struct rblist *rblist, struct rb_node *rb_node);
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struct rb_node *rblist__find(struct rblist *rblist, const void *entry);
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struct rb_node *rblist__findnew(struct rblist *rblist, const void *entry);
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struct rb_node *rblist__entry(const struct rblist *rblist, unsigned int idx);
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static inline bool rblist__empty(const struct rblist *rblist)
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{
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return rblist->nr_entries == 0;
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}
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static inline unsigned int rblist__nr_entries(const struct rblist *rblist)
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{
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return rblist->nr_entries;
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}
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#endif /* __PERF_RBLIST_H */
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