Limit length of strings copied into a heap snapshot

src/profile-generator.cc

Index: src/profile-generator.cc
diff --git a/src/profile-generator.cc b/src/profile-generator.cc
index 7760d8f90e46feb65b8f2ab3c7a615c12bb93aa1..09b8b340bce2794c88c374eabec1e09b81c55b7e 100644
--- a/src/profile-generator.cc
+++ b/src/profile-generator.cc
@@ -148,11 +148,16 @@ const char* StringsStorage::GetVFormatted(const char* format, va_list args) {
 }
 
 
+const uint32_t StringsStorage::kMaxNameSize = 1024;
+
 const char* StringsStorage::GetName(String* name) {
   if (name->IsString()) {
-    return AddOrDisposeString(
-        name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL).Detach(),
-        name->Hash());
+    uint32_t length = name->length();
+    length = kMaxNameSize > length ? length : kMaxNameSize;

[mnaganov (inactive), 2011/11/09 11:45:23]

length = Min(length, kMaxNameSize)

+    SmartArrayPointer<char> data =
+        name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL, 0, length);
+    uint32_t hash = HashSequentialString(*data, length);
+    return AddOrDisposeString(data.Detach(), hash);
   }
   return "";
 }