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perf data: Add perf_data__open_dir_data function 

Add perf_data__open_dir_data to open files inside 'struct perf_data'
path directory:

   static int perf_data__open_dir(struct perf_data *data);

Signed-off-by: Jiri 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/20190224190656.30163-10-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2019-02-24 20:06:45 +01:00 committed by Arnaldo Carvalho de Melo
parent 1455206311
commit eb6176709b
2 changed files with 60 additions and 0 deletions
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59
tools/perf/util/data.c
View File

@ -8,6 +8,8 @@
#include <unistd.h>
#include <string.h>
#include <asm/bug.h>
#include <sys/types.h>
#include <dirent.h>
#include "data.h"
#include "util.h"
@ -59,6 +61,63 @@ out_err:
return ret;
}
int perf_data__open_dir(struct perf_data *data)
{
struct perf_data_file *files = NULL;
struct dirent *dent;
int ret = -1;
DIR *dir;
int nr = 0;
dir = opendir(data->path);
if (!dir)
return -EINVAL;
while ((dent = readdir(dir)) != NULL) {
struct perf_data_file *file;
char path[PATH_MAX];
struct stat st;
snprintf(path, sizeof(path), "%s/%s", data->path, dent->d_name);
if (stat(path, &st))
continue;
if (!S_ISREG(st.st_mode) || strncmp(dent->d_name, "data", 4))
continue;
ret = -ENOMEM;
file = realloc(files, (nr + 1) * sizeof(*files));
if (!file)
goto out_err;
files = file;
file = &files[nr++];
file->path = strdup(path);
if (!file->path)
goto out_err;
ret = open(file->path, O_RDONLY);
if (ret < 0)
goto out_err;
file->fd = ret;
file->size = st.st_size;
}
if (!files)
return -EINVAL;
data->dir.files = files;
data->dir.nr = nr;
return 0;
out_err:
close_dir(files, nr);
return ret;
}
static bool check_pipe(struct perf_data *data)
{
struct stat st;

1
tools/perf/util/data.h
View File

@ -71,5 +71,6 @@ int perf_data__switch(struct perf_data *data,
size_t pos, bool at_exit);
int perf_data__create_dir(struct perf_data *data, int nr);
int perf_data__open_dir(struct perf_data *data);
void perf_data__close_dir(struct perf_data *data);
#endif /* __PERF_DATA_H */