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Subject[PATCH 06/14] perf data: Add perf_data__(create_dir|free_dir) functions
Date
Adding perf_data__create_dir to create nr files inside
struct perf_data path directory:
int perf_data__create_dir(struct perf_data *data, int nr);

and function to free that data:
void perf_data__free_dir(struct perf_data *data);

Link: http://lkml.kernel.org/n/tip-kl4s1f13cg6wycrg367p85qm@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/util/data.c | 47 ++++++++++++++++++++++++++++++++++++++++++
tools/perf/util/data.h | 8 +++++++
2 files changed, 55 insertions(+)

diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index 0a3051cc0ea0..ff1d9e5bd68d 100644
--- a/tools/perf/util/data.c
+++ b/tools/perf/util/data.c
@@ -7,11 +7,58 @@
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
+#include <asm/bug.h>

#include "data.h"
#include "util.h"
#include "debug.h"

+static void free_dir(struct perf_data_file *files, int nr)
+{
+ while (--nr >= 1) {
+ close(files[nr].fd);
+ free(files[nr].path);
+ }
+ free(files);
+}
+
+void perf_data__free_dir(struct perf_data *data)
+{
+ free_dir(data->dir.files, data->dir.nr);
+}
+
+int perf_data__create_dir(struct perf_data *data, int nr)
+{
+ struct perf_data_file *files = NULL;
+ int i, ret = -1;
+
+ files = malloc(nr * sizeof(*files));
+ if (!files)
+ return -ENOMEM;
+
+ data->dir.files = files;
+ data->dir.nr = nr;
+
+ for (i = 0; i < nr; i++) {
+ struct perf_data_file *file = &files[i];
+
+ if (asprintf(&file->path, "%s/data.%d", data->path, i) < 0)
+ goto out_err;
+
+ ret = open(file->path, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
+ if (ret < 0)
+ goto out_err;
+
+ file->fd = ret;
+ }
+
+ return 0;
+
+out_err:
+ free_dir(files, i);
+ return ret;
+}
+
static bool check_pipe(struct perf_data *data)
{
struct stat st;
diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h
index 2bce28117ccf..3b4115dc777f 100644
--- a/tools/perf/util/data.h
+++ b/tools/perf/util/data.h
@@ -21,6 +21,11 @@ struct perf_data {
bool is_pipe;
bool force;
enum perf_data_mode mode;
+
+ struct {
+ struct perf_data_file *files;
+ int nr;
+ } dir;
};

static inline bool perf_data__is_read(struct perf_data *data)
@@ -64,4 +69,7 @@ ssize_t perf_data_file__write(struct perf_data_file *file,
int perf_data__switch(struct perf_data *data,
const char *postfix,
size_t pos, bool at_exit);
+
+int perf_data__create_dir(struct perf_data *data, int nr);
+void perf_data__free_dir(struct perf_data *data);
#endif /* __PERF_DATA_H */
--
2.17.2
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