The Tor Browser: toolkit/crashreporter/google-breakpad/src/client/solaris/handler/solaris

toolkit/crashreporter/google-breakpad/src/client/solaris/handler/solaris_lwp.h@6474c204b198 (annotated)

toolkit/crashreporter/google-breakpad/src/client/solaris/handler/solaris_lwp.h

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 // 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__

The Tor Browser / annotate

toolkit/crashreporter/google-breakpad/src/client/solaris/handler/solaris_lwp.h@6474c204b198 (annotated)

toolkit/crashreporter/google-breakpad/src/client/solaris/handler/solaris_lwp.h