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Commit b45f65e8 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

perf tools: Introduce xyarray__reset function 



To zero all the xyarray contents. It will be used in following patches.

Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1434269985-521-2-git-send-email-jolsa@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent ba7ecb02

tools/perf/util/xyarray.c

+8 −0
Original line number Diff line number Diff line
@@ -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);

tools/perf/util/xyarray.h

+2 −0
Original line number Diff line number Diff line
@@ -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)

{