mirror of
https://github.com/irungentoo/toxcore.git
synced 2024-03-22 13:30:51 +08:00
cb34fe12d1
Ideally this would be able to reach some of the events, so we can write code to respond to those events, but so far only the friend request event actually happens.
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-3.0-or-later
|
|
* Copyright © 2016-2021 The TokTok team.
|
|
*/
|
|
|
|
/**
|
|
* C language compatibility macros for varying compiler support.
|
|
*/
|
|
#ifndef C_TOXCORE_TOXCORE_CCOMPAT_H
|
|
#define C_TOXCORE_TOXCORE_CCOMPAT_H
|
|
|
|
#include <stddef.h> // NULL, size_t
|
|
|
|
#include "attributes.h"
|
|
|
|
//!TOKSTYLE-
|
|
|
|
// Variable length arrays.
|
|
// VLA(type, name, size) allocates a variable length array with automatic
|
|
// storage duration. VLA_SIZE(name) evaluates to the runtime size of that array
|
|
// in bytes.
|
|
//
|
|
// If C99 VLAs are not available, an emulation using alloca (stack allocation
|
|
// "function") is used. Note the semantic difference: alloca'd memory does not
|
|
// get freed at the end of the declaration's scope. Do not use VLA() in loops or
|
|
// you may run out of stack space.
|
|
#if !defined(DISABLE_VLA) && !defined(_MSC_VER) && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
|
|
// C99 VLAs.
|
|
#define ALLOC_VLA(type, name, size) type name[size]
|
|
#define SIZEOF_VLA sizeof
|
|
#else
|
|
|
|
// Emulation using alloca.
|
|
#ifdef _WIN32
|
|
#include <malloc.h>
|
|
#elif defined(__COMPCERT__)
|
|
// TODO(iphydf): This leaks memory like crazy, so compcert is useless for now.
|
|
// Once we're rid of VLAs, we can remove this and compcert becomes useful.
|
|
#define alloca malloc
|
|
#include <stdlib.h>
|
|
#elif defined(__linux__)
|
|
#include <alloca.h>
|
|
#else
|
|
#include <stdlib.h>
|
|
#if !defined(alloca) && defined(__GNUC__)
|
|
#define alloca __builtin_alloca
|
|
#endif
|
|
#endif
|
|
|
|
#define ALLOC_VLA(type, name, size) \
|
|
const size_t name##_vla_size = (size) * sizeof(type); \
|
|
type *const name = (type *)alloca(name##_vla_size)
|
|
#define SIZEOF_VLA(name) name##_vla_size
|
|
|
|
#endif
|
|
|
|
#ifdef MAX_VLA_SIZE
|
|
#include <assert.h>
|
|
#define VLA(type, name, size) \
|
|
ALLOC_VLA(type, name, size); \
|
|
assert((size_t)(size) * sizeof(type) <= MAX_VLA_SIZE)
|
|
#else
|
|
#define VLA ALLOC_VLA
|
|
#endif
|
|
|
|
#if !defined(__cplusplus) || __cplusplus < 201103L
|
|
#define nullptr NULL
|
|
#ifndef static_assert
|
|
#ifdef __GNUC__
|
|
// We'll just assume gcc and clang support C11 _Static_assert.
|
|
#define static_assert _Static_assert
|
|
#else // !__GNUC__
|
|
#define STATIC_ASSERT_(cond, msg, line) typedef int static_assert_##line[(cond) ? 1 : -1]
|
|
#define STATIC_ASSERT(cond, msg, line) STATIC_ASSERT_(cond, msg, line)
|
|
#define static_assert(cond, msg) STATIC_ASSERT(cond, msg, __LINE__)
|
|
#endif // !__GNUC__
|
|
#endif // !static_assert
|
|
#endif // !__cplusplus
|
|
|
|
#ifdef __GNUC__
|
|
#define GNU_PRINTF(f, a) __attribute__((__format__(__printf__, f, a)))
|
|
#else
|
|
#define GNU_PRINTF(f, a)
|
|
#endif
|
|
|
|
//!TOKSTYLE+
|
|
|
|
#endif // C_TOXCORE_TOXCORE_CCOMPAT_H
|