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// Copyright (c) 2021, NVIDIA CORPORATION. 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 NVIDIA CORPORATION 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 THE COPYRIGHT HOLDERS ``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 THE COPYRIGHT OWNER OR
// 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.
#pragma once
#include <memory>
#include <string>
#include "constants.h"
#include "status.h"
namespace triton { namespace core {
// SharedLibrary
//
// Utility functions for shared libraries. Because some operations
// require serialization, this object cannot be directly constructed
// and must instead be accessed using Acquire().
class SharedLibrary {
public:
// Acquire a SharedLibrary object exclusively. Any other attempts to
// concurrently acquire a SharedLibrary object will block.
// object. Ownership is released by destroying the SharedLibrary
// object.
static Status Acquire(std::unique_ptr<SharedLibrary>* slib);
~SharedLibrary();
// Configuration so that dependent libraries will be searched for in
// 'path' during OpenLibraryHandle.
Status SetLibraryDirectory(const std::string& path);
// Reset any configuration done by SetLibraryDirectory.
Status ResetLibraryDirectory();
// Open shared library and return generic handle.
Status OpenLibraryHandle(const std::string& path, void** handle);
// Close shared library.
Status CloseLibraryHandle(void* handle);
// Get a generic pointer for an entrypoint into a shared library.
Status GetEntrypoint(
void* handle, const std::string& name, const bool optional, void** befn);
private:
DISALLOW_COPY_AND_ASSIGN(SharedLibrary);
explicit SharedLibrary() = default;
};
}} // namespace triton::core