Allow adding extra memory regions to minidump on linux/windows

A=Bill McCloskey <wmccloskey@mozilla.com> R=ted at https://bugzilla.mozilla.org/show_bug.cgi?id=662646

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@989 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/client/windows/handler/exception_handler.h

@@ -67,6 +67,7 @@
 
 #include <string>
 #include <vector>
+#include <list>
 
 #include "client/windows/common/ipc_protocol.h"
 #include "client/windows/crash_generation/crash_generation_client.h"
@@ -78,6 +79,16 @@ namespace google_breakpad {
 using std::vector;
 using std::wstring;
 
+// These entries store a list of memory regions that the client wants included
+// in the minidump.
+struct AppMemory {
+  AppMemory(ULONG64 ptr, ULONG length) : ptr(ptr), length(length) {}
+
+  ULONG64 ptr;
+  ULONG length;
+};
+typedef std::list<AppMemory> AppMemoryList;
+
 class ExceptionHandler {
  public:
   // A callback function to run before Breakpad performs any substantial
@@ -219,6 +230,11 @@ class ExceptionHandler {
   // Returns whether out-of-process dump generation is used or not.
   bool IsOutOfProcess() const { return crash_generation_client_.get() != NULL; }
 
+  // Calling RegisterAppMemory(p, len) causes len bytes starting
+  // at address p to be copied to the minidump when a crash happens.
+  void RegisterAppMemory(void *ptr, size_t length);
+  void UnregisterAppMemory(void *ptr);
+
  private:
   friend class AutoExceptionHandler;
 
@@ -404,6 +420,10 @@ class ExceptionHandler {
   // to not interfere with debuggers.
   bool handle_debug_exceptions_;
 
+  // Callers can request additional memory regions to be included in
+  // the dump.
+  AppMemoryList app_memory_info_;
+
   // A stack of ExceptionHandler objects that have installed unhandled
   // exception filters.  This vector is used by HandleException to determine
   // which ExceptionHandler object to route an exception to.  When an