crashpad/test/scoped_module_handle.h
Peter Boström 1aa478d161 Remove DISALLOW_* macros in crashpad
This change was partially scripted and partially done manually with vim
regex + manually placing the deleted constructors.

The script change looked for destructors in the public: section of a
class, if that existed the deleted constructors would go before the
destructor.

For manual placement I looked for any constructor in the public: section
of the corresponding class. If there wasn't one, then it would ideally
have gone as the first entry except below enums, classes and typedefs.
This may not have been perfect, but is hopefully good enough. Fingers
crossed.

#include "base/macros.h" is removed from files that don't use
ignore_result, which is the only other thing defined in base/macros.h.

Bug: chromium:1010217
Change-Id: I099526255a40b1ac1264904b4ece2f3f503c9418
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3171034
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
2021-09-21 15:09:44 +00:00

88 lines
2.5 KiB
C++

// Copyright 2017 The Crashpad Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef CRASHPAD_TEST_SCOPED_MODULE_HANDLE_H_
#define CRASHPAD_TEST_SCOPED_MODULE_HANDLE_H_
#include "build/build_config.h"
#if defined(OS_POSIX)
#include <dlfcn.h>
#elif defined(OS_WIN)
#include <windows.h>
#endif
namespace crashpad {
namespace test {
//! \brief Maintains ownership of a loadable module handle, releasing it as
//! appropriate on destruction.
class ScopedModuleHandle {
private:
class Impl {
public:
Impl() = delete;
Impl(const Impl&) = delete;
Impl& operator=(const Impl&) = delete;
#if defined(OS_POSIX)
using ModuleHandle = void*;
static void* LookUpSymbol(ModuleHandle handle, const char* symbol_name) {
return dlsym(handle, symbol_name);
}
#elif defined(OS_WIN)
using ModuleHandle = HMODULE;
static void* LookUpSymbol(ModuleHandle handle, const char* symbol_name) {
return reinterpret_cast<void*>(GetProcAddress(handle, symbol_name));
}
#endif
static void Close(ModuleHandle handle);
};
public:
using ModuleHandle = Impl::ModuleHandle;
explicit ScopedModuleHandle(ModuleHandle handle);
ScopedModuleHandle(ScopedModuleHandle&& handle);
ScopedModuleHandle(const ScopedModuleHandle&) = delete;
ScopedModuleHandle& operator=(const ScopedModuleHandle&) = delete;
~ScopedModuleHandle();
//! \return The module handle being managed.
ModuleHandle get() const { return handle_; }
//! \return `true` if this object manages a valid loadable module handle.
bool valid() const { return handle_ != nullptr; }
//! \return The value of the symbol named by \a symbol_name, or `nullptr` on
//! failure.
template <typename T>
T LookUpSymbol(const char* symbol_name) const {
return reinterpret_cast<T>(Impl::LookUpSymbol(handle_, symbol_name));
}
private:
ModuleHandle handle_;
};
} // namespace test
} // namespace crashpad
#endif // CRASHPAD_TEST_SCOPED_MODULE_HANDLE_H_