1 files changed, 66 insertions, 0 deletions
diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h
new file mode 100644
index 000000000..4828f7fee
--- /dev/null
+++ b/tools/perf/util/data.h
@@ -0,0 +1,66 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __PERF_DATA_H
+#define __PERF_DATA_H
+
+#include <stdbool.h>
+
+enum perf_data_mode {
+	PERF_DATA_MODE_WRITE,
+	PERF_DATA_MODE_READ,
+};
+
+struct perf_data_file {
+	const char	*path;
+	int		 fd;
+};
+
+struct perf_data {
+	struct perf_data_file	 file;
+	bool			 is_pipe;
+	bool			 force;
+	unsigned long		 size;
+	enum perf_data_mode	 mode;
+};
+
+static inline bool perf_data__is_read(struct perf_data *data)
+{
+	return data->mode == PERF_DATA_MODE_READ;
+}
+
+static inline bool perf_data__is_write(struct perf_data *data)
+{
+	return data->mode == PERF_DATA_MODE_WRITE;
+}
+
+static inline int perf_data__is_pipe(struct perf_data *data)
+{
+	return data->is_pipe;
+}
+
+static inline int perf_data__fd(struct perf_data *data)
+{
+	return data->file.fd;
+}
+
+static inline unsigned long perf_data__size(struct perf_data *data)
+{
+	return data->size;
+}
+
+int perf_data__open(struct perf_data *data);
+void perf_data__close(struct perf_data *data);
+ssize_t perf_data__write(struct perf_data *data,
+			      void *buf, size_t size);
+ssize_t perf_data_file__write(struct perf_data_file *file,
+			      void *buf, size_t size);
+/*
+ * If at_exit is set, only rename current perf.data to
+ * perf.data.<postfix>, continue write on original data.
+ * Set at_exit when flushing the last output.
+ *
+ * Return value is fd of new output.
+ */
+int perf_data__switch(struct perf_data *data,
+			   const char *postfix,
+			   size_t pos, bool at_exit);
+#endif /* __PERF_DATA_H */