Adds capabilities for IPC messages of type long, for the primary purpose of accessibility related communication.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@1263 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 34 insertions, 0 deletions

diff --git a/base/pickle.cc b/base/pickle.cc
index 73a764a..83efaf1 100644
--- a/base/pickle.cc
+++ b/base/pickle.cc
@@ -130,6 +130,22 @@ bool Pickle::ReadInt(void** iter, int* result) const {
   return true;
 }
 
+bool Pickle::ReadLong(void** iter, long* result) const {
+  DCHECK(iter);
+  if (!*iter)
+    *iter = const_cast<char*>(payload());
+
+  if (!IteratorHasRoomFor(*iter, sizeof(*result)))
+    return false;
+
+  // TODO(jar) bug 1129285: Pickle should be cleaned up, and not dependent on
+  // alignment.
+  memcpy(result, *iter, sizeof(*result));
+
+  UpdateIter(iter, sizeof(*result));
+  return true;
+}
+
 bool Pickle::ReadLength(void** iter, int* result) const {
   if (!ReadInt(iter, result))
     return false;
diff --git a/base/pickle.h b/base/pickle.h
index 422a1a30..3538e12 100644
--- a/base/pickle.h
+++ b/base/pickle.h
@@ -90,6 +90,7 @@ class Pickle {
   // be extracted.
   bool ReadBool(void** iter, bool* result) const;
   bool ReadInt(void** iter, int* result) const;
+  bool ReadLong(void** iter, long* result) const;
   bool ReadSize(void** iter, size_t* result) const;
   bool ReadInt64(void** iter, int64* result) const;
   bool ReadIntPtr(void** iter, intptr_t* result) const;
@@ -112,6 +113,9 @@ class Pickle {
   bool WriteInt(int value) {
     return WriteBytes(&value, sizeof(value));
   }
+  bool WriteLong(long value) {
+    return WriteBytes(&value, sizeof(value));
+  }
   bool WriteSize(size_t value) {
     return WriteBytes(&value, sizeof(value));
   }
diff --git a/chrome/common/ipc_message_utils.h b/chrome/common/ipc_message_utils.h
index 7939147..add9d19 100644
--- a/chrome/common/ipc_message_utils.h
+++ b/chrome/common/ipc_message_utils.h
@@ -158,6 +158,20 @@ struct ParamTraits<int> {
 };
 
 template <>
+struct ParamTraits<long> {
+  typedef long param_type;
+  static void Write(Message* m, const param_type& p) {
+    m->WriteLong(p);
+  }
+  static bool Read(const Message* m, void** iter, param_type* r) {
+    return m->ReadLong(iter, r);
+  }
+  static void Log(const param_type& p, std::wstring* l) {
+    l->append(StringPrintf(L"%l", p));
+  }
+};
+
+template <>
 struct ParamTraits<size_t> {
   typedef size_t param_type;
   static void Write(Message* m, const param_type& p) {