[tip:perf/core] perf scripts: Export a find_scripts() function

From: tip-bot for Feng Tang
Date: Wed Sep 19 2012 - 11:24:41 EST


Commit-ID: e5f3705e62b03251797a5173024184bfc223599d
Gitweb: http://git.kernel.org/tip/e5f3705e62b03251797a5173024184bfc223599d
Author: Feng Tang <feng.tang@xxxxxxxxx>
AuthorDate: Fri, 7 Sep 2012 16:42:26 +0800
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 17 Sep 2012 13:11:26 -0300

perf scripts: Export a find_scripts() function

So that other perf commands/browser has a way to dig out the available
scripts info in system, this is a preparation for the script browser.

Signed-off-by: Feng Tang <feng.tang@xxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1347007349-3102-5-git-send-email-feng.tang@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-script.c | 55 +++++++++++++++++++++++++++++++++++++++++++
tools/perf/builtin.h | 1 +
2 files changed, 56 insertions(+), 0 deletions(-)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 76577e6..1be843a 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -1032,6 +1032,61 @@ static int list_available_scripts(const struct option *opt __maybe_unused,
exit(0);
}

+/*
+ * Return -1 if none is found, otherwise the actual scripts number.
+ *
+ * Currently the only user of this function is the script browser, which
+ * will list all statically runnable scripts, select one, execute it and
+ * show the output in a perf browser.
+ */
+int find_scripts(char **scripts_array, char **scripts_path_array)
+{
+ struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
+ char scripts_path[MAXPATHLEN];
+ DIR *scripts_dir, *lang_dir;
+ char lang_path[MAXPATHLEN];
+ char *temp;
+ int i = 0;
+
+ snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
+
+ scripts_dir = opendir(scripts_path);
+ if (!scripts_dir)
+ return -1;
+
+ for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
+ snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
+ lang_dirent.d_name);
+#ifdef NO_LIBPERL
+ if (strstr(lang_path, "perl"))
+ continue;
+#endif
+#ifdef NO_LIBPYTHON
+ if (strstr(lang_path, "python"))
+ continue;
+#endif
+
+ lang_dir = opendir(lang_path);
+ if (!lang_dir)
+ continue;
+
+ for_each_script(lang_path, lang_dir, script_dirent, script_next) {
+ /* Skip those real time scripts: xxxtop.p[yl] */
+ if (strstr(script_dirent.d_name, "top."))
+ continue;
+ sprintf(scripts_path_array[i], "%s/%s", lang_path,
+ script_dirent.d_name);
+ temp = strchr(script_dirent.d_name, '.');
+ snprintf(scripts_array[i],
+ (temp - script_dirent.d_name) + 1,
+ "%s", script_dirent.d_name);
+ i++;
+ }
+ }
+
+ return i;
+}
+
static char *get_script_path(const char *script_root, const char *suffix)
{
struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
diff --git a/tools/perf/builtin.h b/tools/perf/builtin.h
index b382bd5..3ea74ed 100644
--- a/tools/perf/builtin.h
+++ b/tools/perf/builtin.h
@@ -36,4 +36,5 @@ extern int cmd_kvm(int argc, const char **argv, const char *prefix);
extern int cmd_test(int argc, const char **argv, const char *prefix);
extern int cmd_inject(int argc, const char **argv, const char *prefix);

+extern int find_scripts(char **scripts_array, char **scripts_path_array);
#endif
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