| // Copyright (c) 2012, 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 |
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| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // linux_ptrace_dumper.h: Define the google_breakpad::LinuxPtraceDumper |
| // class, which is derived from google_breakpad::LinuxDumper to extract |
| // information from a crashed process via ptrace. |
| // This class was originally splitted from google_breakpad::LinuxDumper. |
| |
| #ifndef CLIENT_LINUX_MINIDUMP_WRITER_LINUX_PTRACE_DUMPER_H_ |
| #define CLIENT_LINUX_MINIDUMP_WRITER_LINUX_PTRACE_DUMPER_H_ |
| |
| #include "client/linux/minidump_writer/linux_dumper.h" |
| |
| namespace google_breakpad { |
| |
| class LinuxPtraceDumper : public LinuxDumper { |
| public: |
| // Constructs a dumper for extracting information of a given process |
| // with a process ID of |pid|. |
| explicit LinuxPtraceDumper(pid_t pid); |
| |
| // Implements LinuxDumper::BuildProcPath(). |
| // Builds a proc path for a certain pid for a node (/proc/<pid>/<node>). |
| // |path| is a character array of at least NAME_MAX bytes to return the |
| // result. |node| is the final node without any slashes. Returns true on |
| // success. |
| virtual bool BuildProcPath(char* path, pid_t pid, const char* node) const; |
| |
| // Implements LinuxDumper::CopyFromProcess(). |
| // Copies content of |length| bytes from a given process |child|, |
| // starting from |src|, into |dest|. This method uses ptrace to extract |
| // the content from the target process. Always returns true. |
| virtual bool CopyFromProcess(void* dest, pid_t child, const void* src, |
| size_t length); |
| |
| // Implements LinuxDumper::GetThreadInfoByIndex(). |
| // Reads information about the |index|-th thread of |threads_|. |
| // Returns true on success. One must have called |ThreadsSuspend| first. |
| virtual bool GetThreadInfoByIndex(size_t index, ThreadInfo* info); |
| |
| // Implements LinuxDumper::IsPostMortem(). |
| // Always returns false to indicate this dumper performs a dump of |
| // a crashed process via ptrace. |
| virtual bool IsPostMortem() const; |
| |
| // Implements LinuxDumper::ThreadsSuspend(). |
| // Suspends all threads in the given process. Returns true on success. |
| virtual bool ThreadsSuspend(); |
| |
| // Implements LinuxDumper::ThreadsResume(). |
| // Resumes all threads in the given process. Returns true on success. |
| virtual bool ThreadsResume(); |
| |
| protected: |
| // Implements LinuxDumper::EnumerateThreads(). |
| // Enumerates all threads of the given process into |threads_|. |
| virtual bool EnumerateThreads(); |
| |
| private: |
| // Set to true if all threads of the crashed process are suspended. |
| bool threads_suspended_; |
| |
| // Read the tracee's registers on kernel with PTRACE_GETREGSET support. |
| // Returns false if PTRACE_GETREGSET is not defined. |
| // Returns true on success. |
| bool ReadRegisterSet(ThreadInfo* info, pid_t tid); |
| |
| // Read the tracee's registers on kernel with PTRACE_GETREGS support. |
| // Returns true on success. |
| bool ReadRegisters(ThreadInfo* info, pid_t tid); |
| }; |
| |
| } // namespace google_breakpad |
| |
| #endif // CLIENT_LINUX_HANDLER_LINUX_PTRACE_DUMPER_H_ |