libperf: Adopt xyarray class from perf

#include <subcmd/parse-options.h>

#include "util/parse-events.h"

#include "util/cpumap.h"

#include "util/xyarray.h"

#include "util/sort.h"

#include "util/string2.h"

#include "util/term.h"

libperf-y += evsel.o

libperf-y += evlist.o

libperf-y += zalloc.o

libperf-y += xyarray.o

$(OUTPUT)zalloc.o: ../../lib/zalloc.c FORCE

	$(call rule_mkdir)

/* SPDX-License-Identifier: GPL-2.0 */

#ifndef _PERF_XYARRAY_H_

#define _PERF_XYARRAY_H_ 1

#ifndef __LIBPERF_INTERNAL_XYARRAY_H

#define __LIBPERF_INTERNAL_XYARRAY_H

#include <sys/types.h>

	return xy->max_x;

}

#endif /* _PERF_XYARRAY_H_ */

#endif /* __LIBPERF_INTERNAL_XYARRAY_H */

// SPDX-License-Identifier: GPL-2.0

#include <internal/xyarray.h>

#include <linux/zalloc.h>

#include <stdlib.h>

#include <string.h>

struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size)

{

	size_t row_size = ylen * entry_size;

	struct xyarray *xy = zalloc(sizeof(*xy) + xlen * row_size);

	if (xy != NULL) {

		xy->entry_size = entry_size;

		xy->row_size   = row_size;

		xy->entries    = xlen * ylen;

		xy->max_x      = xlen;

		xy->max_y      = 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);

}

perf-y += sort.o

perf-y += hist.o

perf-y += util.o

perf-y += xyarray.o

perf-y += cpumap.o

perf-y += cputopo.o

perf-y += cgroup.o