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/*
* This file is part of the Omni C++ framework
*
* Copyright (c) 2016, Zeriph Enterprises, LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - Neither the name of Zeriph, Zeriph Enterprises, LLC, nor the names
* of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY ZERIPH AND CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL ZERIPH AND CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef OMNI_GEN_PTR_HPP
#define OMNI_GEN_PTR_HPP 1
#include <omni/defs/class_macros.hpp>
#include <omni/type.hpp>
#include <omni/sync/scoped_lock.hpp>
namespace omni {
class generic_ptr
{
public:
generic_ptr() :
OMNI_CTOR_FW(omni::generic_ptr)
m_ptr(OMNI_NULL), m_id(0)
{
OMNI_D5_FW("created");
}
template < typename T >
generic_ptr(T *const obj) :
OMNI_CTOR_FW(omni::generic_ptr)
m_ptr(obj), m_id(omni::type_id<T>())
{
OMNI_DV5_FW("created with id of ", this->m_id);
}
generic_ptr(const generic_ptr &o) :
OMNI_CTOR_FW(omni::generic_ptr)
m_ptr(o.m_ptr), m_id(o.m_id)
{
OMNI_DV5_FW("copied with id of ", this->m_id);
}
~generic_ptr()
{
OMNI_TRY_FW
OMNI_DTOR_FW
this->invalidate();
OMNI_CATCH_FW
OMNI_D5_FW("destroyed");
}
static generic_ptr null()
{
return generic_ptr();
}
void invalidate()
{
this->m_ptr = OMNI_NULL;
this->m_id = 0;
}
bool valid() const { return (this->m_ptr != OMNI_NULL); }
operator bool() const
{
return (this->m_ptr != OMNI_NULL);
}
bool operator!() const
{
return (!operator bool());
}
generic_ptr& operator=(const generic_ptr &o)
{
this->m_ptr = o.m_ptr;
this->m_id = o.m_id;
OMNI_DV5_FW("assigned id ", this->m_id);
return *this;
}
template < typename T >
const generic_ptr& operator=(T *const obj)
{
this->m_ptr = obj;
this->m_id = omni::type_id<T>();
OMNI_DV5_FW("set type id ", this->m_id);
return *this;
}
template < typename T >
operator T *const() const
{
if (this->m_id != omni::type_id<T>()) {
OMNI_ERR_RETV_FW("invalid cast detected", omni::invalid_type_cast(), 0)
}
return static_cast<T *const>(
const_cast<void *const>(this->m_ptr)
);
}
template < typename T >
operator const T *const() const
{
if ((this->m_id != omni::type_id<T>()) && (this->m_id != omni::type_id<const T>())) {
OMNI_ERR_RETV_FW("invalid cast detected", omni::invalid_type_cast(), 0);
}
return static_cast<const T *const>(this->m_ptr);
}
operator void *const() const { return const_cast<void*>(this->m_ptr); }
operator const void *const() const { return this->m_ptr; }
bool operator==(const generic_ptr& o) const
{
return (this->m_ptr == o.m_ptr && this->m_id == o.m_id);
}
bool operator!=(const generic_ptr& o) const
{
return !(*this == o);
}
OMNI_MEMBERS_FW(omni::generic_ptr) // disposing,name,type(),hash()
private:
#if defined(OMNI_TYPE_INFO)
omni::type<omni::generic_ptr> m_type;
#endif
const void* m_ptr;
std::size_t m_id;
};
class generic_ptr_safe
{
public:
generic_ptr_safe() :
OMNI_CTOR_FW(omni::generic_ptr_safe)
m_ptr(OMNI_NULL), m_id(0), m_mtx()
{
omni::sync::mutex_init(this->m_mtx);
OMNI_D5_FW("created");
}
template < typename T >
generic_ptr_safe(T *const obj) :
OMNI_CTOR_FW(omni::generic_ptr_safe)
m_ptr(obj), m_id(omni::type_id<T>()), m_mtx()
{
omni::sync::mutex_init(this->m_mtx);
OMNI_DV5_FW("created with id of ", this->m_id);
}
generic_ptr_safe(const generic_ptr_safe &o) :
OMNI_CTOR_FW(omni::generic_ptr_safe)
m_ptr(o.m_ptr), m_id(o.m_id), m_mtx()
{
omni::sync::mutex_init(this->m_mtx);
OMNI_DV5_FW("coppied with id of ", this->m_id);
}
~generic_ptr_safe()
{
OMNI_TRY_FW
OMNI_DTOR_FW
this->invalidate();
omni::sync::mutex_destroy(this->m_mtx);
OMNI_CATCH_FW
OMNI_D5_FW("destroyed");
}
static generic_ptr_safe null()
{
return generic_ptr_safe();
}
void invalidate()
{
omni::sync::scoped_lock<omni::sync::mutex_t> alock(&this->m_mtx);
this->m_ptr = OMNI_NULL;
this->m_id = 0;
}
bool valid() const
{
omni::sync::scoped_lock<omni::sync::mutex_t> alock(&this->m_mtx);
return (this->m_ptr != OMNI_NULL);
}
operator bool() const
{
return this->valid();
}
bool operator!() const
{
return (!operator bool());
}
generic_ptr_safe& operator=(const generic_ptr_safe &o)
{
omni::sync::scoped_lock<omni::sync::mutex_t> a1(&this->m_mtx);
omni::sync::scoped_lock<omni::sync::mutex_t> a2(&o.m_mtx);
this->m_ptr = o.m_ptr;
this->m_id = o.m_id;
return *this;
}
template < typename T >
const generic_ptr_safe& operator=(T *const obj)
{
omni::sync::scoped_lock<omni::sync::mutex_t> alock(&this->m_mtx);
this->m_ptr = obj;
this->m_id = omni::type_id<T>();
OMNI_DV5_FW("set type id ", this->m_id);
return *this;
}
template < typename T >
operator T *const() const
{
omni::sync::scoped_lock<omni::sync::mutex_t> alock(&this->m_mtx);
if (this->m_id != omni::type_id<T>()) {
OMNI_ERR_RETV_FW("invalid cast detected", omni::invalid_type_cast(), 0)
}
return static_cast<T *const>(
const_cast<void *const>(this->m_ptr)
);
}
template < typename T >
operator const T *const() const
{
omni::sync::scoped_lock<omni::sync::mutex_t> alock(&this->m_mtx);
if ((this->m_id != omni::type_id<T>()) && (this->m_id != omni::type_id<const T>())) {
OMNI_ERR_RETV_FW("invalid cast detected", omni::invalid_type_cast(), 0);
}
return static_cast<const T *const>(this->m_ptr);
}
operator void *const() const
{
omni::sync::scoped_lock<omni::sync::mutex_t> alock(&this->m_mtx);
return const_cast<void*>(this->m_ptr);
}
operator const void *const() const
{
omni::sync::scoped_lock<omni::sync::mutex_t> alock(&this->m_mtx);
return this->m_ptr;
}
bool operator==(const generic_ptr_safe& o) const
{
omni::sync::scoped_lock<omni::sync::mutex_t> a1(&this->m_mtx);
omni::sync::scoped_lock<omni::sync::mutex_t> a2(&o.m_mtx);
return (this->m_ptr == o.m_ptr && this->m_id == o.m_id);
}
bool operator!=(const generic_ptr_safe& o) const
{
return !(*this == o);
}
OMNI_MEMBERS_FW(omni::generic_ptr_safe) // disposing,name,type(),hash()
private:
#if defined(OMNI_TYPE_INFO)
omni::type<omni::generic_ptr_safe> m_type;
#endif
const void* m_ptr;
std::size_t m_id;
mutable omni::sync::mutex_t m_mtx;
};
}
#endif // OMNI_GEN_PTR_HPP