Jay Cornwall
74f5aca93d
Route all device-visible system memory allocations through system_allocator. Change-Id: I5e90a1bf491e432678a6d8ab1f9f3770734cbda1
112 라인
3.8 KiB
C++
112 라인
3.8 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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//
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// The University of Illinois/NCSA
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// Open Source License (NCSA)
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//
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// Copyright (c) 2014-2015, Advanced Micro Devices, Inc. All rights reserved.
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//
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// Developed by:
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//
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// AMD Research and AMD HSA Software Development
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//
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// Advanced Micro Devices, Inc.
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//
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// www.amd.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal with the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// - Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimers.
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// - Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimers in
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// the documentation and/or other materials provided with the distribution.
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// - Neither the names of Advanced Micro Devices, Inc,
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// nor the names of its contributors may be used to endorse or promote
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// products derived from this Software without specific prior written
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// permission.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS WITH THE SOFTWARE.
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//
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////////////////////////////////////////////////////////////////////////////////
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#ifndef HSA_RUNTME_CORE_INC_SHARED_H_
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#define HSA_RUNTME_CORE_INC_SHARED_H_
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#include "core/util/utils.h"
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#include <assert.h>
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#include <cstring>
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#include <functional>
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namespace core {
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/// @brief Base class encapsulating the allocator and deallocator for
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/// shared shared object.
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class BaseShared {
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public:
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static void SetAllocateAndFree(
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const std::function<void*(size_t, size_t, uint32_t)>& allocate,
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const std::function<void(void*)>& free) {
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allocate_ = allocate;
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free_ = free;
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}
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protected:
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static std::function<void*(size_t, size_t, uint32_t)> allocate_;
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static std::function<void(void*)> free_;
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};
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/// @brief Base class for classes that encapsulates object shared between
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/// host and agents. Alignment defaults to __alignof(T) but may be increased.
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template <typename T, size_t Align=0>
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class Shared : public BaseShared {
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public:
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Shared() {
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assert(allocate_ != nullptr && free_ != nullptr &&
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"Shared object allocator is not set");
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static_assert((__alignof(T) <= Align) || (Align == 0),
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"Align is less than alignof(T)");
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shared_object_ =
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reinterpret_cast<T*>(allocate_(sizeof(T), Max(__alignof(T), Align), 0));
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assert(shared_object_ != NULL && "Failed on allocating shared_object_");
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memset(shared_object_, 0, sizeof(T));
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if (shared_object_ != NULL) new (shared_object_) T;
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}
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virtual ~Shared() {
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assert(allocate_ != nullptr && free_ != nullptr &&
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"Shared object allocator is not set");
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if (IsSharedObjectAllocationValid()) {
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shared_object_->~T();
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free_(shared_object_);
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}
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}
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T* shared_object() const { return shared_object_; }
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bool IsSharedObjectAllocationValid() const {
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return (shared_object_ != NULL);
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}
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private:
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T* shared_object_;
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};
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} // namespace core
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#endif // header guard
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