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// Copyright (c) 2010 Google Inc.
// 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 Google Inc. 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 AND CONTRIBUTORS
// "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.
#ifndef GOOGLE_BREAKPAD_CLIENT_MAC_CRASH_GENERATION_CRASH_GENERATION_SERVER_H_
#define GOOGLE_BREAKPAD_CLIENT_MAC_CRASH_GENERATION_CRASH_GENERATION_SERVER_H_
#include <stdint.h>
#include <string>
#include "common/mac/MachIPC.h"
namespace google_breakpad {
class ClientInfo;
// Messages the server can read via its mach port
enum {
kDumpRequestMessage = 1,
kAcknowledgementMessage = 2,
kQuitMessage = 3
};
// Exception details sent by the client when requesting a dump.
struct ExceptionInfo {
int32_t exception_type;
int32_t exception_code;
int32_t exception_subcode;
};
class CrashGenerationServer {
public:
// WARNING: callbacks may be invoked on a different thread
// than that which creates the CrashGenerationServer. They must
// be thread safe.
typedef void (*OnClientDumpRequestCallback)(void *context,
const ClientInfo &client_info,
const std::string &file_path);
typedef void (*OnClientExitingCallback)(void *context,
const ClientInfo &client_info);
// If a FilterCallback returns false, the dump will not be written.
typedef bool (*FilterCallback)(void *context);
// Create an instance with the given parameters.
//
// mach_port_name: Named server port to listen on.
// filter: Callback for a client to cancel writing a dump.
// filter_context: Context for the filter callback.
// dump_callback: Callback for a client crash dump request.
// dump_context: Context for client crash dump request callback.
// exit_callback: Callback for client process exit.
// exit_context: Context for client exit callback.
// generate_dumps: Whether to automatically generate dumps.
// Client code of this class might want to generate dumps explicitly
// in the crash dump request callback. In that case, false can be
// passed for this parameter.
// dump_path: Path for generating dumps; required only if true is
// passed for generateDumps parameter; NULL can be passed otherwise.
CrashGenerationServer(const char *mach_port_name,
FilterCallback filter,
void *filter_context,
OnClientDumpRequestCallback dump_callback,
void *dump_context,
OnClientExitingCallback exit_callback,
void *exit_context,
bool generate_dumps,
const std::string &dump_path);
~CrashGenerationServer();
// Perform initialization steps needed to start listening to clients.
//
// Return true if initialization is successful; false otherwise.
bool Start();
// Stop the server.
bool Stop();
private:
// Return a unique filename at which a minidump can be written.
bool MakeMinidumpFilename(std::string &outFilename);
// Loop reading client messages and responding to them until
// a quit message is received.
static void *WaitForMessages(void *server);
// Wait for a single client message and respond to it. Returns false
// if a quit message was received or if an error occurred.
bool WaitForOneMessage();
FilterCallback filter_;
void *filter_context_;
OnClientDumpRequestCallback dump_callback_;
void *dump_context_;
OnClientExitingCallback exit_callback_;
void *exit_context_;
bool generate_dumps_;
std::string dump_dir_;
bool started_;
// The mach port that receives requests to dump from child processes.
ReceivePort receive_port_;
// The name of the mach port. Stored so the Stop method can message
// the background thread to shut it down.
std::string mach_port_name_;
// The thread that waits on the receive port.
pthread_t server_thread_;
// Disable copy constructor and operator=.
CrashGenerationServer(const CrashGenerationServer&);
CrashGenerationServer& operator=(const CrashGenerationServer&);
};
} // namespace google_breakpad
#endif // GOOGLE_BREAKPAD_CLIENT_MAC_CRASH_GENERATION_CRASH_GENERATION_SERVER_H_
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