libmsgpack/msgpack.h

   1 /*
   2  * SPDX-License-Identifier: LGPL-2.1-only
   3  *
   4  * Copyright (C) 2020 Francis Deslauriers <francis.deslauriers@efficios.com>
   5  */
   6
   7 #ifndef _LTTNG_UST_MSGPACK_H
   8 #define _LTTNG_UST_MSGPACK_H
   9
  10 #include <stddef.h>
  11 #ifdef __KERNEL__
  12 #include <linux/types.h>
  13 #else /* __KERNEL__ */
  14 #include <stdint.h>
  15 #include "helper.h"
  16 #endif /* __KERNEL__ */
  17
  18 struct lttng_msgpack_writer {
  19         uint8_t *buffer;
  20         uint8_t *write_pos;
  21         const uint8_t *end_write_pos;
  22         uint8_t array_nesting;
  23         uint8_t map_nesting;
  24 };
  25
  26 LTTNG_HIDDEN
  27 void lttng_msgpack_writer_init(
  28                 struct lttng_msgpack_writer *writer,
  29                 uint8_t *buffer, size_t size);
  30
  31 LTTNG_HIDDEN
  32 void lttng_msgpack_writer_fini(struct lttng_msgpack_writer *writer);
  33
  34 LTTNG_HIDDEN
  35 int lttng_msgpack_write_nil(struct lttng_msgpack_writer *writer);
  36 LTTNG_HIDDEN
  37 int lttng_msgpack_write_true(struct lttng_msgpack_writer *writer);
  38 LTTNG_HIDDEN
  39 int lttng_msgpack_write_false(struct lttng_msgpack_writer *writer);
  40 LTTNG_HIDDEN
  41 int lttng_msgpack_write_unsigned_integer(
  42                 struct lttng_msgpack_writer *writer, uint64_t value);
  43 LTTNG_HIDDEN
  44 int lttng_msgpack_write_signed_integer(
  45                 struct lttng_msgpack_writer *writer, int64_t value);
  46 LTTNG_HIDDEN
  47 int lttng_msgpack_write_double(struct lttng_msgpack_writer *writer, double value);
  48 LTTNG_HIDDEN
  49 int lttng_msgpack_write_str(struct lttng_msgpack_writer *writer,
  50                 const char *value);
  51 LTTNG_HIDDEN
  52 int lttng_msgpack_begin_map(struct lttng_msgpack_writer *writer, size_t count);
  53 LTTNG_HIDDEN
  54 int lttng_msgpack_end_map(struct lttng_msgpack_writer *writer);
  55 LTTNG_HIDDEN
  56 int lttng_msgpack_begin_array(
  57                 struct lttng_msgpack_writer *writer, size_t count);
  58 LTTNG_HIDDEN
  59 int lttng_msgpack_end_array(struct lttng_msgpack_writer *writer);
  60
  61 #endif /* _LTTNG_UST_MSGPACK_H */