tomato/toxcore/ccompat.h
Green Sky 3b6bb15e86 Squashed 'external/toxcore/c-toxcore/' changes from 11ab1d2a723..d9b8fa6098d
d9b8fa6098d fix: Fake broadcast address for 127.x.x.x
aa649165a57 chore: Add code for future netprof TCP testing
9e5693de5ac chore: add to_string functions for netprof enums
52d915e6a90 cleanup: Heap allocate network profile objects
80fabd4a729 feat: Implement Tox network profiler
05abe083cb6 cleanup: Some random cleanups, mostly related to mem.
5cca24513b8 cleanup: Check that onion IP/Port packing worked.
e092ecd1244 cleanup: Use tox memory allocator in some more places.
3cfe41c7587 fix: Avoid `memcpy`-ing structs into onion ping id data.
e32ac001938 fix: Add more information on why the frame was not sent.
ab887003687 fix: Allow TCP connections to fail `connect` calls.
7603170e663 refactor: Use tox memory in group connection allocations.
5bd8a85eb89 cleanup: Align internal logger with external on type of source line.
e9bf524d9e1 cleanup: Add missing `#include` to sort_test.cc.
d10c966b998 feat: Add `to_string` functions for toxencryptsave errors.
7bfd0dc8003 docs: Update the docs for group join functions
380dde9f2ae test: Add more logging to TCP connection constructor.
0f12f384c8c cleanup: Reduce stack frame sizes to below 4096 bytes.
bc43cec0626 chore: Happy new year!
fbe78f1702e cleanup: Add a `TOX_HIDE_DEPRECATED` check to hide deprecated symbols.
44d9da07e77 refactor: Use tox memory for group moderation/pack allocations.
7f26d520168 refactor: Use tox memory in group chats allocations.
2f62f3d0e77 refactor: Use tox Memory for group allocations.
8a968162041 chore: Add dispatch/events headers to bazel export.
2bbfb35abf6 docs: Output the error code string instead of int. in toxav logging
d55d0e4eaef cleanup: Remove redundant code for checking if group exists
2a6dc643338 chore: Upgrade dependencies for websockify.
fc0650601c1 fix: Allow peers to reconnect to group chats using a password

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: d9b8fa6098de6c074038b6664d2572627540b148
2025-01-18 15:53:06 +01:00

79 lines
2.3 KiB
C

/* SPDX-License-Identifier: GPL-3.0-or-later
* Copyright © 2016-2025 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]
#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) \
type *const name = (type *)alloca((size) * sizeof(type))
#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 */
//!TOKSTYLE+
#endif /* C_TOXCORE_TOXCORE_CCOMPAT_H */