Sean Keely
c9642cf7af
Added an API for creating signals with attributes. Added two APIs for IPC operations on signals. Initial use of exceptions for error handling. Add ref counting to signals. Removed spin loops from signal destructors. Signals are no longer to be destroyed with delete, use DeleteSignal instead. Added delete safety to doorbells. Added secondary hsa_signal_t -> Signal* translation path for IPC enabled signals. Change-Id: Id59065d002f0c2566b0a9425694da2ed27cb7d7f
95 lines
3.7 KiB
C++
95 lines
3.7 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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#include "core/inc/ipc_signal.h"
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#include <utility>
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#include "core/inc/runtime.h"
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#include "core/inc/exceptions.h"
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namespace core {
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int IPCSignal::rtti_id_ = 0;
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KernelMutex IPCSignal::lock_;
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SharedMemory::SharedMemory(const hsa_amd_ipc_memory_t* handle, size_t len) {
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hsa_status_t err = Runtime::runtime_singleton_->IPCAttach(handle, len, 0, NULL, &ptr_);
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if (err != HSA_STATUS_SUCCESS) throw AMD::hsa_exception(err, "IPC memory attach failed.");
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}
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SharedMemory::SharedMemory(SharedMemory&& rhs) {
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ptr_ = rhs.ptr_;
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rhs.ptr_ = nullptr;
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}
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SharedMemory::~SharedMemory() {
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if (ptr_ == nullptr) return;
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auto err = Runtime::runtime_singleton_->IPCDetach(ptr_);
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assert(err == HSA_STATUS_SUCCESS && "IPC detach failed.");
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}
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void IPCSignal::CreateHandle(Signal* signal, hsa_amd_ipc_signal_t* ipc_handle) {
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if (!signal->isIPC())
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throw AMD::hsa_exception(HSA_STATUS_ERROR_INVALID_ARGUMENT, "Signal must be IPC enabled.");
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SharedSignal* shared = SharedSignal::Convert(Convert(signal));
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hsa_status_t err = Runtime::runtime_singleton_->IPCCreate(shared, 4096, ipc_handle);
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if (err != HSA_STATUS_SUCCESS) throw AMD::hsa_exception(err, "IPC memory create failed.");
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}
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Signal* IPCSignal::Attach(const hsa_amd_ipc_signal_t* ipc_signal_handle) {
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SharedMemorySignal shared(ipc_signal_handle);
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if (!(shared.signal()->IsIPC()))
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throw AMD::hsa_exception(HSA_STATUS_ERROR_INVALID_ARGUMENT,
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"IPC memory does not contain an IPC signal abi block.");
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hsa_signal_t handle = SharedSignal::Convert(shared.signal());
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ScopedAcquire<KernelMutex> lock(&lock_);
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Signal* ret = core::Signal::DuplicateHandle(handle);
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if (ret == nullptr) ret = new IPCSignal(std::move(shared));
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return ret;
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}
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} // namespace core
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