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Commit 14552063 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

perf data: Add perf_data__(create_dir|close_dir) functions 



Add 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 close that data:

  void perf_data__close_dir(struct perf_data *data);

Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20190224190656.30163-9-jolsa@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent ccb7a71d

tools/perf/util/data.c

+47 −0
Original line number Diff line number Diff line
@@ -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 close_dir(struct perf_data_file *files, int nr)

{

	while (--nr >= 1) {

		close(files[nr].fd);

		free(files[nr].path);

	}

	free(files);

}



void perf_data__close_dir(struct perf_data *data)

{

	close_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 = zalloc(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:

	close_dir(files, i);

	return ret;

}



static bool check_pipe(struct perf_data *data)

{

	struct stat st;

tools/perf/util/data.h

+8 −0
Original line number Diff line number Diff line
@@ -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__close_dir(struct perf_data *data);

#endif /* __PERF_DATA_H */