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