abf5ef7247
Add for_each iteration macros for strlist. This patch introduces strlist__for_each() and strlist__for_each_safe(), both are similar to list_for_each() and list_for_each_safe(). Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091215153156.17436.49157.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
#ifndef __PERF_STRLIST_H
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#define __PERF_STRLIST_H
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#include <linux/rbtree.h>
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#include <stdbool.h>
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struct str_node {
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struct rb_node rb_node;
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const char *s;
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};
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struct strlist {
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struct rb_root entries;
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unsigned int nr_entries;
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bool dupstr;
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};
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struct strlist *strlist__new(bool dupstr, const char *slist);
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void strlist__delete(struct strlist *self);
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void strlist__remove(struct strlist *self, struct str_node *sn);
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int strlist__load(struct strlist *self, const char *filename);
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int strlist__add(struct strlist *self, const char *str);
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struct str_node *strlist__entry(const struct strlist *self, unsigned int idx);
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struct str_node *strlist__find(struct strlist *self, const char *entry);
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static inline bool strlist__has_entry(struct strlist *self, const char *entry)
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{
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return strlist__find(self, entry) != NULL;
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}
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static inline bool strlist__empty(const struct strlist *self)
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{
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return self->nr_entries == 0;
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}
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static inline unsigned int strlist__nr_entries(const struct strlist *self)
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{
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return self->nr_entries;
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}
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/* For strlist iteration */
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static inline struct str_node *strlist__first(struct strlist *self)
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{
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struct rb_node *rn = rb_first(&self->entries);
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return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
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}
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static inline struct str_node *strlist__next(struct str_node *sn)
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{
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struct rb_node *rn;
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if (!sn)
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return NULL;
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rn = rb_next(&sn->rb_node);
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return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
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}
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/**
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* strlist_for_each - iterate over a strlist
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* @pos: the &struct str_node to use as a loop cursor.
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* @self: the &struct strlist for loop.
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*/
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#define strlist__for_each(pos, self) \
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for (pos = strlist__first(self); pos; pos = strlist__next(pos))
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/**
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* strlist_for_each_safe - iterate over a strlist safe against removal of
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* str_node
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* @pos: the &struct str_node to use as a loop cursor.
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* @n: another &struct str_node to use as temporary storage.
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* @self: the &struct strlist for loop.
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*/
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#define strlist__for_each_safe(pos, n, self) \
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for (pos = strlist__first(self), n = strlist__next(pos); pos;\
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pos = n, n = strlist__next(n))
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int strlist__parse_list(struct strlist *self, const char *s);
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#endif /* __PERF_STRLIST_H */
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