SoW-2020-0002: Trace Hit Counters: Implement key-addressed counters in shared memory...

[lttng-ust.git] / libmsgpack / msgpack.h

diff --git a/libmsgpack/msgpack.h b/libmsgpack/msgpack.h
new file mode 100644 (file)
index 0000000..e5c011e
--- /dev/null
+++ b/libmsgpack/msgpack.h
@@ -0,0 +1,61 @@
+#ifndef _LTTNG_UST_MSGPACK_H
+#define _LTTNG_UST_MSGPACK_H
+
+/*
+ * msgpack.h
+ *
+ * Copyright (C) 2020 Francis Deslauriers <francis.deslauriers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; only
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stddef.h>
+#ifdef __KERNEL__
+#include <linux/types.h>
+#else /* __KERNEL__ */
+#include <stdint.h>
+#endif /* __KERNEL__ */
+
+struct lttng_msgpack_writer {
+       uint8_t *buffer;
+       uint8_t *write_pos;
+       const uint8_t *end_write_pos;
+       uint8_t array_nesting;
+       uint8_t map_nesting;
+};
+
+void lttng_msgpack_writer_init(
+               struct lttng_msgpack_writer *writer,
+               uint8_t *buffer, size_t size);
+
+void lttng_msgpack_writer_fini(struct lttng_msgpack_writer *writer);
+
+int lttng_msgpack_write_nil(struct lttng_msgpack_writer *writer);
+int lttng_msgpack_write_true(struct lttng_msgpack_writer *writer);
+int lttng_msgpack_write_false(struct lttng_msgpack_writer *writer);
+int lttng_msgpack_write_unsigned_integer(
+               struct lttng_msgpack_writer *writer, uint64_t value);
+int lttng_msgpack_write_signed_integer(
+               struct lttng_msgpack_writer *writer, int64_t value);
+int lttng_msgpack_write_double(struct lttng_msgpack_writer *writer, double value);
+int lttng_msgpack_write_str(struct lttng_msgpack_writer *writer,
+               const char *value);
+int lttng_msgpack_begin_map(struct lttng_msgpack_writer *writer, size_t count);
+int lttng_msgpack_end_map(struct lttng_msgpack_writer *writer);
+int lttng_msgpack_begin_array(
+               struct lttng_msgpack_writer *writer, size_t count);
+int lttng_msgpack_end_array(struct lttng_msgpack_writer *writer);
+
+#endif /* _LTTNG_UST_MSGPACK_H */