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perf tools: Introduce perf_session class

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That does all the initialization boilerplate, opening the file,
reading the header, checking if it is valid, etc.

And that will as well have the threads list, kmap (now) global
variable, etc, so that we can handle two (or more) perf.data files
describing sessions to compare.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1260573842-19720-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo
2009-12-11 21:24:02 -02:00
committed by Ingo Molnar
parent ea08d8cbd1
commit 94c744b6c0
15 changed files with 206 additions and 181 deletions
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4
tools/perf/util/header.h
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@@ -55,8 +55,8 @@ struct perf_header {
DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
};
struct perf_header *perf_header__new(void);
void perf_header__delete(struct perf_header *self);
int perf_header__init(struct perf_header *self);
void perf_header__exit(struct perf_header *self);
int perf_header__read(struct perf_header *self, int fd);
int perf_header__write(struct perf_header *self, int fd, bool at_exit);