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perf machine: Introduce find_thread method

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There are cases where we want just to find a thread if it exists
already, so provide a method for that.

While doing that start moving 'machine' methods to a separate file.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-8wpzqs9kfupng6xq8hx6lnxa@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2012-10-06 15:43:20 -03:00
parent 0c1fe6b2f3
commit 9d2f8e22fc
5 changed files with 73 additions and 40 deletions
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41
tools/perf/util/thread.c
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@@ -7,7 +7,7 @@
#include "util.h"
#include "debug.h"
static struct thread *thread__new(pid_t pid)
struct thread *thread__new(pid_t pid)
{
struct thread *self = zalloc(sizeof(*self));
@@ -61,45 +61,6 @@ static size_t thread__fprintf(struct thread *self, FILE *fp)
map_groups__fprintf(&self->mg, verbose, fp);
}
struct thread *machine__findnew_thread(struct machine *self, pid_t pid)
{
struct rb_node **p = &self->threads.rb_node;
struct rb_node *parent = NULL;
struct thread *th;
/*
* Font-end cache - PID lookups come in blocks,
* so most of the time we dont have to look up
* the full rbtree:
*/
if (self->last_match && self->last_match->pid == pid)
return self->last_match;
while (*p != NULL) {
parent = *p;
th = rb_entry(parent, struct thread, rb_node);
if (th->pid == pid) {
self->last_match = th;
return th;
}
if (pid < th->pid)
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
}
th = thread__new(pid);
if (th != NULL) {
rb_link_node(&th->rb_node, parent, p);
rb_insert_color(&th->rb_node, &self->threads);
self->last_match = th;
}
return th;
}
void thread__insert_map(struct thread *self, struct map *map)
{
map_groups__fixup_overlappings(&self->mg, map, verbose, stderr);