[tip:perf/core] perf thread_map: Add has() method

[tip-bot for Jiri Olsa <tipbot@zytor.com>]

Commit-ID:  3407df8bbc3a91d9aa4910130026ab6b3a261b87
Gitweb:     http://git.kernel.org/tip/3407df8bbc3a91d9aa4910130026ab6b3a261b87
Author:     Jiri Olsa <jolsa@kernel.org>
AuthorDate: Tue, 12 Apr 2016 15:29:24 +0200
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 13 Apr 2016 10:11:50 -0300

perf thread_map: Add has() method

Adding thread_map__has() to return bool of pid presence in threads map.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1460467771-26532-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/thread_map.c | 12 ++++++++++++
 tools/perf/util/thread_map.h |  1 +
 2 files changed, 13 insertions(+)

diff --git a/tools/perf/util/thread_map.c b/tools/perf/util/thread_map.c
index 267112b..878ac06 100644
--- a/tools/perf/util/thread_map.c
+++ b/tools/perf/util/thread_map.c
@@ -436,3 +436,15 @@ struct thread_map *thread_map__new_event(struct thread_map_event *event)
 
 	return threads;
 }
+
+bool thread_map__has(struct thread_map *threads, pid_t pid)
+{
+	int i;
+
+	for (i = 0; i < threads->nr; ++i) {
+		if (threads->map[i].pid == pid)
+			return true;
+	}
+
+	return false;
+}
diff --git a/tools/perf/util/thread_map.h b/tools/perf/util/thread_map.h
index 85e4c7c..9a065ea 100644
--- a/tools/perf/util/thread_map.h
+++ b/tools/perf/util/thread_map.h
@@ -55,4 +55,5 @@ static inline char *thread_map__comm(struct thread_map *map, int thread)
 }
 
 void thread_map__read_comms(struct thread_map *threads);
+bool thread_map__has(struct thread_map *threads, pid_t pid);
 #endif	/* __PERF_THREAD_MAP_H */