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/*************************************************************************/
/* mono_gc_handle.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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 CSHARP_GC_HANDLE_H
#define CSHARP_GC_HANDLE_H
#include <mono/jit/jit.h>
#include "core/object/reference.h"
namespace gdmono {
enum class GCHandleType : char {
NIL,
STRONG_HANDLE,
WEAK_HANDLE
};
}
// Manual release of the GC handle must be done when using this struct
struct MonoGCHandleData {
uint32_t handle = 0;
gdmono::GCHandleType type = gdmono::GCHandleType::NIL;
_FORCE_INLINE_ bool is_released() const { return !handle; }
_FORCE_INLINE_ bool is_weak() const { return type == gdmono::GCHandleType::WEAK_HANDLE; }
_FORCE_INLINE_ MonoObject *get_target() const { return handle ? mono_gchandle_get_target(handle) : nullptr; }
void release();
MonoGCHandleData &operator=(const MonoGCHandleData &p_other) {
#ifdef DEBUG_ENABLED
CRASH_COND(!is_released());
#endif
handle = p_other.handle;
type = p_other.type;
return *this;
}
MonoGCHandleData(const MonoGCHandleData &) = default;
MonoGCHandleData() {}
MonoGCHandleData(uint32_t p_handle, gdmono::GCHandleType p_type) :
handle(p_handle),
type(p_type) {
}
static MonoGCHandleData new_strong_handle(MonoObject *p_object);
static MonoGCHandleData new_strong_handle_pinned(MonoObject *p_object);
static MonoGCHandleData new_weak_handle(MonoObject *p_object);
};
class MonoGCHandleRef : public Reference {
GDCLASS(MonoGCHandleRef, Reference);
MonoGCHandleData data;
public:
static Ref<MonoGCHandleRef> create_strong(MonoObject *p_object);
static Ref<MonoGCHandleRef> create_weak(MonoObject *p_object);
_FORCE_INLINE_ bool is_released() const { return data.is_released(); }
_FORCE_INLINE_ bool is_weak() const { return data.is_weak(); }
_FORCE_INLINE_ MonoObject *get_target() const { return data.get_target(); }
void release() { data.release(); }
_FORCE_INLINE_ void set_handle(uint32_t p_handle, gdmono::GCHandleType p_handle_type) {
data = MonoGCHandleData(p_handle, p_handle_type);
}
MonoGCHandleRef(const MonoGCHandleData &p_gc_handle_data) :
data(p_gc_handle_data) {
}
~MonoGCHandleRef() { release(); }
};
#endif // CSHARP_GC_HANDLE_H
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