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third_party/crashpad/crashpad/util/win/exception_handler_server.h

Index: third_party/crashpad/crashpad/util/win/exception_handler_server.h
diff --git a/third_party/crashpad/crashpad/util/win/exception_handler_server.h b/third_party/crashpad/crashpad/util/win/exception_handler_server.h
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+// Copyright 2015 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_UTIL_WIN_EXCEPTION_HANDLER_SERVER_H_
+#define CRASHPAD_UTIL_WIN_EXCEPTION_HANDLER_SERVER_H_
+
+#include <set>
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/synchronization/lock.h"
+#include "util/file/file_io.h"
+#include "util/win/address_types.h"
+#include "util/win/scoped_handle.h"
+
+namespace crashpad {
+
+namespace internal {
+class PipeServiceContext;
+class ClientData;
+}  // namespace internal
+
+//! \brief Runs the main exception-handling server in Crashpad's handler
+//!     process.
+class ExceptionHandlerServer {
+ public:
+  class Delegate {
+   public:
+    virtual ~Delegate();
+
+    //! \brief Called when the server has created the named pipe connection
+    //!     points and is ready to service requests.
+    virtual void ExceptionHandlerServerStarted() = 0;
+
+    //! \brief Called when the client has signalled that it has encountered an
+    //!     exception and so wants a crash dump to be taken.
+    //!
+    //! \param[in] process A handle to the client process. Ownership of the
+    //!     lifetime of this handle is not passed to the delegate.
+    //! \param[in] exception_information_address The address in the client's
+    //!     address space of an ExceptionInformation structure.
+    //! \param[in] debug_critical_section_address The address in the client's
+    //!     address space of a `CRITICAL_SECTION` allocated with a valid
+    //!     `.DebugInfo` field, or `0` if unavailable.
+    //! \return The exit code that should be used when terminating the client
+    //!     process.
+    virtual unsigned int ExceptionHandlerServerException(
+        HANDLE process,
+        WinVMAddress exception_information_address,
+        WinVMAddress debug_critical_section_address) = 0;
+  };
+
+  //! \brief Constructs the exception handling server.
+  //!
+  //! \param[in] persistent `true` if Run() should not return until Stop() is
+  //!     called. If `false`, Run() will return when all clients have exited,
+  //!     although Run() will always wait for the first client to connect.
+  explicit ExceptionHandlerServer(bool persistent);
+
+  ~ExceptionHandlerServer();
+
+  //! \brief Sets the pipe name to listen for client registrations on.
+  //!
+  //! Either this method or CreatePipe(), but not both, must be called before
+  //! Run().
+  //!
+  //! \param[in] pipe_name The name of the pipe to listen on. Must be of the
+  //!     form "\\.\pipe\<some_name>".
+  void SetPipeName(const std::wstring& pipe_name);
+
+  //! \brief Creates a randomized pipe name to listen for client registrations
+  //!     on and returns its name.
+  //!
+  //! Either this method or CreatePipe(), but not both, must be called before
+  //! Run().
+  //!
+  //! \return The pipe name that will be listened on.
+  std::wstring CreatePipe();
+
+  //! \brief Runs the exception-handling server.
+  //!
+  //! \param[in] delegate The interface to which the exceptions are delegated
+  //!     when they are caught in Run(). Ownership is not transferred.
+  void Run(Delegate* delegate);
+
+  //! \brief Stops the exception-handling server. Returns immediately. The
+  //!     object must not be destroyed until Run() returns.
+  void Stop();
+
+ private:
+  static bool ServiceClientConnection(
+      const internal::PipeServiceContext& service_context);
+  static DWORD __stdcall PipeServiceProc(void* ctx);
+  static void __stdcall OnCrashDumpEvent(void* ctx, BOOLEAN);
+  static void __stdcall OnNonCrashDumpEvent(void* ctx, BOOLEAN);
+  static void __stdcall OnProcessEnd(void* ctx, BOOLEAN);
+
+  std::wstring pipe_name_;
+  ScopedKernelHANDLE port_;
+  ScopedFileHandle first_pipe_instance_;
+
+  base::Lock clients_lock_;
+  std::set<internal::ClientData*> clients_;
+
+  bool persistent_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExceptionHandlerServer);
+};
+
+}  // namespace crashpad
+
+#endif  // CRASHPAD_UTIL_WIN_EXCEPTION_HANDLER_SERVER_H_