diff options
| author | Jiri Olsa <[email protected]> | 2015-06-14 10:19:16 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2015-06-16 10:34:39 -0300 |
| commit | b45f65e8fddc89ac6b46388908d3f6ac728be372 (patch) | |
| tree | 00c67bd22d4adc6aeabeb30eb7be4ddf5c85527c | |
| parent | ba7ecb02e7b89b09d8cdf4c1514a386af8916c4b (diff) | |
perf tools: Introduce xyarray__reset function
To zero all the xyarray contents. It will be used in following patches.
Signed-off-by: Jiri Olsa <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
| -rw-r--r-- | tools/perf/util/xyarray.c | 8 | ||||
| -rw-r--r-- | tools/perf/util/xyarray.h | 2 |
2 files changed, 10 insertions, 0 deletions
diff --git a/tools/perf/util/xyarray.c b/tools/perf/util/xyarray.c index 22afbf6c536a..c10ba41ef3f6 100644 --- a/tools/perf/util/xyarray.c +++ b/tools/perf/util/xyarray.c @@ -9,11 +9,19 @@ struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size) if (xy != NULL) { xy->entry_size = entry_size; xy->row_size = row_size; + xy->entries = xlen * ylen; } return xy; } +void xyarray__reset(struct xyarray *xy) +{ + size_t n = xy->entries * xy->entry_size; + + memset(xy->contents, 0, n); +} + void xyarray__delete(struct xyarray *xy) { free(xy); diff --git a/tools/perf/util/xyarray.h b/tools/perf/util/xyarray.h index c488a07275dd..7f30af371b7e 100644 --- a/tools/perf/util/xyarray.h +++ b/tools/perf/util/xyarray.h @@ -6,11 +6,13 @@ struct xyarray { size_t row_size; size_t entry_size; + size_t entries; char contents[]; }; struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size); void xyarray__delete(struct xyarray *xy); +void xyarray__reset(struct xyarray *xy); static inline void *xyarray__entry(struct xyarray *xy, int x, int y) { |