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-rw-r--r--tools/perf/util/xyarray.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/tools/perf/util/xyarray.c b/tools/perf/util/xyarray.c
new file mode 100644
index 000000000..86889ebc3
--- /dev/null
+++ b/tools/perf/util/xyarray.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "xyarray.h"
+#include <stdlib.h>
+#include <string.h>
+#include <linux/zalloc.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);
+}