| // 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_SOLARIS_LWP_H__ |
| #define CLIENT_SOLARIS_HANDLER_SOLARIS_LWP_H__ |
| |
| #if defined(sparc) || defined(__sparc) |
| #define TARGET_CPU_SPARC 1 |
| #elif defined(i386) || defined(__i386) |
| #define TARGET_CPU_X86 1 |
| #else |
| #error "cannot determine cpu type" |
| #endif |
| |
| #include <signal.h> |
| #include <stdint.h> |
| #include <sys/user.h> |
| #include <ucontext.h> |
| |
| #ifndef _KERNEL |
| #define _KERNEL |
| #define MUST_UNDEF_KERNEL |
| #endif // _KERNEL |
| #include <sys/procfs.h> |
| #ifdef MUST_UNDEF_KERNEL |
| #undef _KERNEL |
| #undef MUST_UNDEF_KERNEL |
| #endif // MUST_UNDEF_KERNEL |
| |
| namespace google_breakpad { |
| |
| // Max module path name length. |
| static const int kMaxModuleNameLength = 256; |
| |
| // Holding infomaton about a module in the process. |
| struct ModuleInfo { |
| char name[kMaxModuleNameLength]; |
| uintptr_t start_addr; |
| int size; |
| }; |
| |
| // A callback to run when getting a lwp in the process. |
| // Return true will go on to the next lwp while return false will stop the |
| // iteration. |
| typedef bool (*LwpCallback)(lwpstatus_t* lsp, void* context); |
| |
| // A callback to run when a new module is found in the process. |
| // Return true will go on to the next module while return false will stop the |
| // iteration. |
| typedef bool (*ModuleCallback)(const ModuleInfo& module_info, void* context); |
| |
| // A callback to run when getting a lwpid in the process. |
| // Return true will go on to the next lwp while return false will stop the |
| // iteration. |
| typedef bool (*LwpidCallback)(int lwpid, void* context); |
| |
| // Holding the callback information. |
| template<class CallbackFunc> |
| struct CallbackParam { |
| // Callback function address. |
| CallbackFunc call_back; |
| // Callback context; |
| void* context; |
| |
| CallbackParam() : call_back(NULL), context(NULL) { |
| } |
| |
| CallbackParam(CallbackFunc func, void* func_context) : |
| call_back(func), context(func_context) { |
| } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| // |
| // SolarisLwp |
| // |
| // Provides handy support for operation on Solaris lwps. |
| // It uses proc file system to get lwp information. |
| // |
| // TODO(Alfred): Currently it only supports x86. Add SPARC support. |
| // |
| class SolarisLwp { |
| public: |
| // Create a SolarisLwp instance to list all the lwps in a process. |
| explicit SolarisLwp(int pid); |
| ~SolarisLwp(); |
| |
| int getpid() const { return this->pid_; } |
| |
| // Control all the lwps in the process. |
| // Return the number of suspended/resumed lwps in the process. |
| // Return -1 means failed to control lwps. |
| int ControlAllLwps(bool suspend); |
| |
| // Get the count of lwps in the process. |
| // Return -1 means error. |
| int GetLwpCount() const; |
| |
| // Iterate the lwps of process. |
| // Whenever there is a lwp found, the callback will be invoked to process |
| // the information. |
| // Return the callback return value or -1 on error. |
| int Lwp_iter_all(int pid, CallbackParam<LwpCallback>* callback_param) const; |
| |
| // Get the module count of the current process. |
| int GetModuleCount() const; |
| |
| // Get the mapped modules in the address space. |
| // Whenever a module is found, the callback will be invoked to process the |
| // information. |
| // Return how may modules are found. |
| int ListModules(CallbackParam<ModuleCallback>* callback_param) const; |
| |
| // Get the bottom of the stack from esp. |
| uintptr_t GetLwpStackBottom(uintptr_t current_esp) const; |
| |
| // Finds a signal context on the stack given the ebp of our signal handler. |
| bool FindSigContext(uintptr_t sighandler_ebp, ucontext_t** sig_ctx); |
| |
| private: |
| // Check if the address is a valid virtual address. |
| bool IsAddressMapped(uintptr_t address) const; |
| |
| private: |
| // The pid of the process we are listing lwps. |
| int pid_; |
| }; |
| |
| } // namespace google_breakpad |
| |
| #endif // CLIENT_SOLARIS_HANDLER_SOLARIS_LWP_H__ |