mirror of
https://github.com/encounter/dawn-cmake.git
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d9ab69a9c1
Also remove stuttering from the target names by dropping the 'dawn_' prefix. Bug: dawn:1275 Change-Id: Iac79f9927010b8e5edeb7e0949092b34431d54dd Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/79061 Reviewed-by: Corentin Wallez <cwallez@chromium.org>
107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
// Copyright 2017 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "dawn/common/DynamicLib.h"
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#include "dawn/common/Platform.h"
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#if DAWN_PLATFORM_WINDOWS
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# include "dawn/common/windows_with_undefs.h"
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# if DAWN_PLATFORM_WINUWP
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# include "dawn/common/WindowsUtils.h"
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# endif
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#elif DAWN_PLATFORM_POSIX
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# include <dlfcn.h>
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#else
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# error "Unsupported platform for DynamicLib"
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#endif
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DynamicLib::~DynamicLib() {
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Close();
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}
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DynamicLib::DynamicLib(DynamicLib&& other) {
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std::swap(mHandle, other.mHandle);
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}
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DynamicLib& DynamicLib::operator=(DynamicLib&& other) {
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std::swap(mHandle, other.mHandle);
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return *this;
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}
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bool DynamicLib::Valid() const {
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return mHandle != nullptr;
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}
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bool DynamicLib::Open(const std::string& filename, std::string* error) {
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#if DAWN_PLATFORM_WINDOWS
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# if DAWN_PLATFORM_WINUWP
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mHandle = LoadPackagedLibrary(UTF8ToWStr(filename.c_str()).c_str(), 0);
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# else
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mHandle = LoadLibraryA(filename.c_str());
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# endif
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if (mHandle == nullptr && error != nullptr) {
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*error = "Windows Error: " + std::to_string(GetLastError());
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}
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#elif DAWN_PLATFORM_POSIX
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mHandle = dlopen(filename.c_str(), RTLD_NOW);
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if (mHandle == nullptr && error != nullptr) {
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*error = dlerror();
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}
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#else
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# error "Unsupported platform for DynamicLib"
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#endif
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return mHandle != nullptr;
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}
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void DynamicLib::Close() {
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if (mHandle == nullptr) {
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return;
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}
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#if DAWN_PLATFORM_WINDOWS
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FreeLibrary(static_cast<HMODULE>(mHandle));
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#elif DAWN_PLATFORM_POSIX
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dlclose(mHandle);
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#else
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# error "Unsupported platform for DynamicLib"
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#endif
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mHandle = nullptr;
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}
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void* DynamicLib::GetProc(const std::string& procName, std::string* error) const {
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void* proc = nullptr;
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#if DAWN_PLATFORM_WINDOWS
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proc = reinterpret_cast<void*>(GetProcAddress(static_cast<HMODULE>(mHandle), procName.c_str()));
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if (proc == nullptr && error != nullptr) {
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*error = "Windows Error: " + std::to_string(GetLastError());
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}
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#elif DAWN_PLATFORM_POSIX
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proc = reinterpret_cast<void*>(dlsym(mHandle, procName.c_str()));
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if (proc == nullptr && error != nullptr) {
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*error = dlerror();
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}
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#else
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# error "Unsupported platform for DynamicLib"
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#endif
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return proc;
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}
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