1426cd3b3a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see". Backported from #70885.
174 lines
4.9 KiB
C++
174 lines
4.9 KiB
C++
/**************************************************************************/
|
|
/* thread_local.h */
|
|
/**************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/**************************************************************************/
|
|
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
|
|
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/**************************************************************************/
|
|
|
|
#ifndef MONO_THREAD_LOCAL_H
|
|
#define MONO_THREAD_LOCAL_H
|
|
|
|
#ifdef HAVE_CXX11_THREAD_LOCAL
|
|
#define _THREAD_LOCAL_(m_t) thread_local m_t
|
|
#else
|
|
|
|
#if !defined(__GNUC__) && !defined(_MSC_VER)
|
|
#error Platform or compiler not supported
|
|
#endif
|
|
|
|
#if defined(__GNUC__)
|
|
|
|
#ifdef HAVE_GCC___THREAD
|
|
#define _THREAD_LOCAL_(m_t) __thread m_t
|
|
#else
|
|
#define USE_CUSTOM_THREAD_LOCAL
|
|
#endif
|
|
|
|
#elif defined(_MSC_VER)
|
|
|
|
#ifdef HAVE_DECLSPEC_THREAD
|
|
#define _THREAD_LOCAL_(m_t) __declspec(thread) m_t
|
|
#else
|
|
#define USE_CUSTOM_THREAD_LOCAL
|
|
#endif
|
|
|
|
#endif // __GNUC__ _MSC_VER
|
|
|
|
#endif // HAVE_CXX11_THREAD_LOCAL
|
|
|
|
#ifdef USE_CUSTOM_THREAD_LOCAL
|
|
#define _THREAD_LOCAL_(m_t) ThreadLocal<m_t>
|
|
#endif
|
|
|
|
#include "core/typedefs.h"
|
|
|
|
#ifdef WINDOWS_ENABLED
|
|
#define _CALLBACK_FUNC_ __stdcall
|
|
#else
|
|
#define _CALLBACK_FUNC_
|
|
#endif
|
|
|
|
struct ThreadLocalStorage {
|
|
void *get_value() const;
|
|
void set_value(void *p_value) const;
|
|
|
|
void alloc(void(_CALLBACK_FUNC_ *p_destr_callback)(void *));
|
|
void free();
|
|
|
|
private:
|
|
struct Impl;
|
|
Impl *pimpl;
|
|
};
|
|
|
|
template <typename T>
|
|
class ThreadLocal {
|
|
ThreadLocalStorage storage;
|
|
|
|
T init_val;
|
|
|
|
static void _CALLBACK_FUNC_ destr_callback(void *tls_data) {
|
|
memdelete(static_cast<T *>(tls_data));
|
|
}
|
|
|
|
T *_tls_get_value() const {
|
|
void *tls_data = storage.get_value();
|
|
|
|
if (tls_data)
|
|
return static_cast<T *>(tls_data);
|
|
|
|
T *data = memnew(T(init_val));
|
|
|
|
storage.set_value(data);
|
|
|
|
return data;
|
|
}
|
|
|
|
void _initialize(const T &p_init_val) {
|
|
init_val = p_init_val;
|
|
storage.alloc(&destr_callback);
|
|
}
|
|
|
|
public:
|
|
ThreadLocal() {
|
|
_initialize(T());
|
|
}
|
|
|
|
ThreadLocal(const T &p_init_val) {
|
|
_initialize(p_init_val);
|
|
}
|
|
|
|
ThreadLocal(const ThreadLocal &other) {
|
|
_initialize(*other._tls_get_value());
|
|
}
|
|
|
|
~ThreadLocal() {
|
|
storage.free();
|
|
}
|
|
|
|
_FORCE_INLINE_ T *operator&() const {
|
|
return _tls_get_value();
|
|
}
|
|
|
|
_FORCE_INLINE_ operator T &() const {
|
|
return *_tls_get_value();
|
|
}
|
|
|
|
_FORCE_INLINE_ ThreadLocal &operator=(const T &val) {
|
|
T *ptr = _tls_get_value();
|
|
*ptr = val;
|
|
return *this;
|
|
}
|
|
};
|
|
|
|
struct FlagScopeGuard {
|
|
FlagScopeGuard(bool &p_flag) :
|
|
flag(p_flag) {
|
|
flag = !flag;
|
|
}
|
|
|
|
~FlagScopeGuard() {
|
|
flag = !flag;
|
|
}
|
|
|
|
private:
|
|
bool &flag;
|
|
};
|
|
|
|
#undef _CALLBACK_FUNC_
|
|
|
|
#define _TLS_RECURSION_GUARD_V_(m_ret) \
|
|
static _THREAD_LOCAL_(bool) _recursion_flag_ = false; \
|
|
if (_recursion_flag_) \
|
|
return m_ret; \
|
|
FlagScopeGuard _recursion_guard_(_recursion_flag_);
|
|
|
|
#define _TLS_RECURSION_GUARD_ \
|
|
static _THREAD_LOCAL_(bool) _recursion_flag_ = false; \
|
|
if (_recursion_flag_) \
|
|
return; \
|
|
FlagScopeGuard _recursion_guard_(_recursion_flag_);
|
|
|
|
#endif // MONO_THREAD_LOCAL_H
|