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diff --git a/src/client/solaris/handler/minidump_generator.h b/src/client/solaris/handler/minidump_generator.h
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+// Copyright (c) 2007, 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.
+
+// Author: Alfred Peng
+
+#ifndef CLIENT_SOLARIS_HANDLER_MINIDUMP_GENERATOR_H__
+#define CLIENT_SOLARIS_HANDLER_MINIDUMP_GENERATOR_H__
+
+#include "client/minidump_file_writer.h"
+#include "client/solaris/handler/solaris_lwp.h"
+#include "google_breakpad/common/breakpad_types.h"
+#include "google_breakpad/common/minidump_format.h"
+
+namespace google_breakpad {
+
+//
+// MinidumpGenerator
+//
+// A minidump generator should be created before any exception happen.
+//
+class MinidumpGenerator {
+  // Callback run for writing lwp information in the process.
+  friend bool LwpInformationCallback(lwpstatus_t *lsp, void *context);
+
+  // Callback run for writing module information in the process.
+  friend bool ModuleInfoCallback(const ModuleInfo &module_info, void *context);
+
+ public:
+  MinidumpGenerator();
+
+  ~MinidumpGenerator();
+
+  // Write minidump.
+  bool WriteMinidumpToFile(const char *file_pathname,
+                           int signo);
+
+ private:
+  // Helpers
+  bool WriteCVRecord(MDRawModule *module, const char *module_path);
+
+  // Write the lwp stack information to dump file.
+  bool WriteLwpStack(uintptr_t last_esp, UntypedMDRVA *memory,
+                     MDMemoryDescriptor *loc);
+
+  // Write CPU context based on provided registers.
+  bool WriteContext(MDRawContextX86 *context, prgregset_t regs,
+                    prfpregset_t *fp_regs);
+
+  // Write information about a lwp.
+  // Only processes lwp running normally at the crash.
+  bool WriteLwpStream(lwpstatus_t *lsp, MDRawThread *lwp);
+
+  // Write the CPU information to the dump file.
+  bool WriteCPUInformation(MDRawSystemInfo *sys_info);
+
+  //Write the OS information to the dump file.
+  bool WriteOSInformation(MDRawSystemInfo *sys_info);
+
+  typedef bool (MinidumpGenerator::*WriteStreamFN)(MDRawDirectory *);
+
+  // Write all the information to the dump file.
+  void *Write();
+
+  // Stream writers
+  bool WriteLwpListStream(MDRawDirectory *dir);
+  bool WriteModuleListStream(MDRawDirectory *dir);
+  bool WriteSystemInfoStream(MDRawDirectory *dir);
+  bool WriteExceptionStream(MDRawDirectory *dir);
+  bool WriteMiscInfoStream(MDRawDirectory *dir);
+  bool WriteBreakpadInfoStream(MDRawDirectory *dir);
+
+ private:
+  MinidumpFileWriter writer_;
+
+  // Pid of the lwp who called WriteMinidumpToFile
+  int requester_pid_;
+
+  // Signal number when crash happed. Can be 0 if this is a requested dump.
+  int signo_;
+
+  // Used to get information about the lwps.
+  SolarisLwp *lwp_lister_;
+};
+
+}  // namespace google_breakpad
+
+#endif   // CLIENT_SOLARIS_HANDLER_MINIDUMP_GENERATOR_H_