122 lines
4.3 KiB
C++
122 lines
4.3 KiB
C++
// Copyright (c) 2014 Marshall A. Greenblatt. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the name Chromium Embedded
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// Framework nor the names of its contributors may be used to endorse
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// or promote products derived from this software without specific prior
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// written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// ---------------------------------------------------------------------------
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//
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// The contents of this file are only available to applications that link
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// against the libcef_dll_wrapper target.
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//
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#ifndef CEF_INCLUDE_WRAPPER_CEF_HELPERS_H_
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#define CEF_INCLUDE_WRAPPER_CEF_HELPERS_H_
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#pragma once
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#include <cstring>
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#include <string>
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#include <vector>
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#include "include/base/cef_bind.h"
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#include "include/base/cef_logging.h"
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#include "include/base/cef_macros.h"
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#include "include/cef_task.h"
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#define CEF_REQUIRE_UI_THREAD() DCHECK(CefCurrentlyOn(TID_UI));
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#define CEF_REQUIRE_IO_THREAD() DCHECK(CefCurrentlyOn(TID_IO));
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#define CEF_REQUIRE_FILE_THREAD() DCHECK(CefCurrentlyOn(TID_FILE));
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#define CEF_REQUIRE_RENDERER_THREAD() DCHECK(CefCurrentlyOn(TID_RENDERER));
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// Use this struct in conjuction with refcounted types to ensure that an
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// object is deleted on the specified thread. For example:
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//
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// class Foo : public base::RefCountedThreadSafe<Foo, CefDeleteOnUIThread> {
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// public:
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// Foo();
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// void DoSomething();
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//
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// private:
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// // Allow deletion via scoped_refptr only.
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// friend struct CefDeleteOnThread<TID_UI>;
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// friend class base::RefCountedThreadSafe<Foo, CefDeleteOnUIThread>;
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//
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// virtual ~Foo() {}
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// };
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//
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// base::scoped_refptr<Foo> foo = new Foo();
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// foo->DoSomething();
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// foo = NULL; // Deletion of |foo| will occur on the UI thread.
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//
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template <CefThreadId thread>
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struct CefDeleteOnThread {
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template <typename T>
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static void Destruct(const T* x) {
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if (CefCurrentlyOn(thread)) {
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delete x;
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} else {
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CefPostTask(thread,
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base::Bind(&CefDeleteOnThread<thread>::Destruct<T>, x));
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}
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}
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};
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struct CefDeleteOnUIThread : public CefDeleteOnThread<TID_UI> {};
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struct CefDeleteOnIOThread : public CefDeleteOnThread<TID_IO> {};
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struct CefDeleteOnFileThread : public CefDeleteOnThread<TID_FILE> {};
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struct CefDeleteOnRendererThread : public CefDeleteOnThread<TID_RENDERER> {};
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///
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// Helper class to manage a scoped copy of |argv|.
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///
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class CefScopedArgArray {
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public:
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CefScopedArgArray(int argc, char* argv[]) {
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// argv should have (argc + 1) elements, the last one always being NULL.
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array_ = new char*[argc + 1];
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values_.resize(argc);
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for (int i = 0; i < argc; ++i) {
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values_[i] = argv[i];
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array_[i] = const_cast<char*>(values_[i].c_str());
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}
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array_[argc] = NULL;
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}
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~CefScopedArgArray() { delete[] array_; }
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char** array() const { return array_; }
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private:
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char** array_;
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// Keep values in a vector separate from |array_| because various users may
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// modify |array_| and we still want to clean up memory properly.
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std::vector<std::string> values_;
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DISALLOW_COPY_AND_ASSIGN(CefScopedArgArray);
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};
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#endif // CEF_INCLUDE_WRAPPER_CEF_HELPERS_H_
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