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author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-10-06 18:43:20 (GMT) |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-10-06 19:33:22 (GMT) |
commit | 9d2f8e22fc965bcdd5561d000d234fe2d23657ba (patch) | |
tree | b0f328b99b87e904c3222ab815e8599e0fe7c29e /tools/perf | |
parent | 0c1fe6b2f30fa275d939071293b6e28771283f6d (diff) | |
download | linux-9d2f8e22fc965bcdd5561d000d234fe2d23657ba.tar.xz |
perf machine: Introduce find_thread method
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>
Diffstat (limited to 'tools/perf')
-rw-r--r-- | tools/perf/Makefile | 2 | ||||
-rw-r--r-- | tools/perf/util/machine.c | 57 | ||||
-rw-r--r-- | tools/perf/util/machine.h | 11 | ||||
-rw-r--r-- | tools/perf/util/thread.c | 41 | ||||
-rw-r--r-- | tools/perf/util/thread.h | 2 |
5 files changed, 73 insertions, 40 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile index f9126f8..d80a333 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -300,6 +300,7 @@ LIB_H += util/evlist.h LIB_H += util/exec_cmd.h LIB_H += util/types.h LIB_H += util/levenshtein.h +LIB_H += util/machine.h LIB_H += util/map.h LIB_H += util/parse-options.h LIB_H += util/parse-events.h @@ -383,6 +384,7 @@ LIB_OBJS += $(OUTPUT)util/header.o LIB_OBJS += $(OUTPUT)util/callchain.o LIB_OBJS += $(OUTPUT)util/values.o LIB_OBJS += $(OUTPUT)util/debug.o +LIB_OBJS += $(OUTPUT)util/machine.o LIB_OBJS += $(OUTPUT)util/map.o LIB_OBJS += $(OUTPUT)util/pstack.o LIB_OBJS += $(OUTPUT)util/session.o diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c new file mode 100644 index 0000000..9d36d7e --- /dev/null +++ b/tools/perf/util/machine.c @@ -0,0 +1,57 @@ +#include "machine.h" +#include "map.h" +#include "thread.h" +#include <stdbool.h> + +static struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, + bool create) +{ + struct rb_node **p = &machine->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 (machine->last_match && machine->last_match->pid == pid) + return machine->last_match; + + while (*p != NULL) { + parent = *p; + th = rb_entry(parent, struct thread, rb_node); + + if (th->pid == pid) { + machine->last_match = th; + return th; + } + + if (pid < th->pid) + p = &(*p)->rb_left; + else + p = &(*p)->rb_right; + } + + if (!create) + return NULL; + + th = thread__new(pid); + if (th != NULL) { + rb_link_node(&th->rb_node, parent, p); + rb_insert_color(&th->rb_node, &machine->threads); + machine->last_match = th; + } + + return th; +} + +struct thread *machine__findnew_thread(struct machine *machine, pid_t pid) +{ + return __machine__findnew_thread(machine, pid, true); +} + +struct thread *machine__find_thread(struct machine *machine, pid_t pid) +{ + return __machine__findnew_thread(machine, pid, false); +} diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h new file mode 100644 index 0000000..54df0cd --- /dev/null +++ b/tools/perf/util/machine.h @@ -0,0 +1,11 @@ +#ifndef __PERF_MACHINE_H +#define __PERF_MACHINE_H + +#include <sys/types.h> + +struct thread; +struct machine; + +struct thread *machine__find_thread(struct machine *machine, pid_t pid); + +#endif /* __PERF_MACHINE_H */ diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index fb4b7ea..fe3bb1e 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c @@ -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); diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h index f66610b..f2fa17c 100644 --- a/tools/perf/util/thread.h +++ b/tools/perf/util/thread.h @@ -3,6 +3,7 @@ #include <linux/rbtree.h> #include <unistd.h> +#include <sys/types.h> #include "symbol.h" struct thread { @@ -22,6 +23,7 @@ struct thread { struct machine; +struct thread *thread__new(pid_t pid); void thread__delete(struct thread *self); int thread__set_comm(struct thread *self, const char *comm); |