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 #endif /* __KERNEL__ */
  16
  17 struct lttng_msgpack_writer {
  18         uint8_t *buffer;
  19         uint8_t *write_pos;
  20         const uint8_t *end_write_pos;
  21         uint8_t array_nesting;
  22         uint8_t map_nesting;
  23 };
  24
  25 void lttng_msgpack_writer_init(
  26                 struct lttng_msgpack_writer *writer,
  27                 uint8_t *buffer, size_t size)
  28         __attribute__((visibility("hidden")));
  29
  30 void lttng_msgpack_writer_fini(struct lttng_msgpack_writer *writer)
  31         __attribute__((visibility("hidden")));
  32
  33 int lttng_msgpack_write_nil(struct lttng_msgpack_writer *writer)
  34         __attribute__((visibility("hidden")));
  35
  36 int lttng_msgpack_write_true(struct lttng_msgpack_writer *writer)
  37         __attribute__((visibility("hidden")));
  38
  39 int lttng_msgpack_write_false(struct lttng_msgpack_writer *writer)
  40         __attribute__((visibility("hidden")));
  41
  42 int lttng_msgpack_write_unsigned_integer(
  43                 struct lttng_msgpack_writer *writer, uint64_t value)
  44         __attribute__((visibility("hidden")));
  45
  46 int lttng_msgpack_write_signed_integer(
  47                 struct lttng_msgpack_writer *writer, int64_t value)
  48         __attribute__((visibility("hidden")));
  49
  50 int lttng_msgpack_write_double(struct lttng_msgpack_writer *writer, double value)
  51         __attribute__((visibility("hidden")));
  52
  53 int lttng_msgpack_write_str(struct lttng_msgpack_writer *writer,
  54                 const char *value)
  55         __attribute__((visibility("hidden")));
  56
  57 int lttng_msgpack_begin_map(struct lttng_msgpack_writer *writer, size_t count)
  58         __attribute__((visibility("hidden")));
  59
  60 int lttng_msgpack_end_map(struct lttng_msgpack_writer *writer)
  61         __attribute__((visibility("hidden")));
  62
  63 int lttng_msgpack_begin_array(
  64                 struct lttng_msgpack_writer *writer, size_t count)
  65         __attribute__((visibility("hidden")));
  66
  67 int lttng_msgpack_end_array(struct lttng_msgpack_writer *writer)
  68         __attribute__((visibility("hidden")));
  69
  70 #endif /* _LTTNG_UST_MSGPACK_H */