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perf tools: Add perf_data_file__write interface

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Adding perf_data_file__write interface to centralize output to files.
The function prototype is:

  ssize_t perf_data_file__write(struct perf_data_file *file,
                                void *buf, size_t size);

Returns number of bytes written or -1 in case of error.

NOTE: Also indenting 'struct perf_data_file' members, no functional
      change done.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1385634619-8129-6-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2013-11-28 11:30:17 +01:00 committed by Arnaldo Carvalho de Melo
parent bc3a502bc2
commit 6f9a317f2a
2 changed files with 14 additions and 6 deletions
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6
tools/perf/util/data.c
View file

@ -118,3 +118,9 @@ void perf_data_file__close(struct perf_data_file *file)
{
close(file->fd);
}
ssize_t perf_data_file__write(struct perf_data_file *file,
void *buf, size_t size)
{
return writen(file->fd, buf, size);
}

14
tools/perf/util/data.h
View file

@ -9,12 +9,12 @@ enum perf_data_mode {
};
struct perf_data_file {
const char *path;
int fd;
bool is_pipe;
bool force;
unsigned long size;
enum perf_data_mode mode;
const char *path;
int fd;
bool is_pipe;
bool force;
unsigned long size;
enum perf_data_mode mode;
};
static inline bool perf_data_file__is_read(struct perf_data_file *file)
@ -44,5 +44,7 @@ static inline unsigned long perf_data_file__size(struct perf_data_file *file)
int perf_data_file__open(struct perf_data_file *file);
void perf_data_file__close(struct perf_data_file *file);
ssize_t perf_data_file__write(struct perf_data_file *file,
void *buf, size_t size);
#endif /* __PERF_DATA_H */