Cleanup native, collected, and stub code handling in profiler

runtime/vm/service.cc

Index: runtime/vm/service.cc
diff --git a/runtime/vm/service.cc b/runtime/vm/service.cc
index afc31be2c2550e26e05d32107b94cd64f826fb00..7d38a2083987e742f54e782a2e650a5a0dee4459 100644
--- a/runtime/vm/service.cc
+++ b/runtime/vm/service.cc
@@ -1057,19 +1057,61 @@ static bool HandleCpu(Isolate* isolate, JSONStream* js) {
 }
 
 
+static bool HandleNativeCode(uintptr_t pc, JSONStream* js) {
+  Object::null_object().PrintToJSONStream(js, false);
+  return true;
+}
+
+
+static bool HandleCollectedCode(uintptr_t pc, JSONStream* js) {
+  Object::null_object().PrintToJSONStream(js, false);
+  return true;
+}
+
+
 static bool HandleCode(Isolate* isolate, JSONStream* js) {
   REQUIRE_COLLECTION_ID("code");
   uintptr_t pc;
+  if (js->num_arguments() > 3) {
+    PrintError(js, "Command too long");
+    return true;
+  }
+  if (js->num_arguments() == 3) {
+    const char* command = js->GetArgument(1);
+    if (!strcmp("collected", command)) {

[Ivan Posva, 2014/02/28 21:46:35]

strcmp does not return a bool.

+      if (!GetUnsignedIntegerId(js->GetArgument(1), &pc, 16)) {
+        PrintError(js, "Must specify code address: code/collected/c0deadd0.");
+        return true;
+      }
+      return HandleCollectedCode(pc, js);
+    } else if (!strcmp("native", command)) {
+      if (!GetUnsignedIntegerId(js->GetArgument(1), &pc, 16)) {
+        PrintError(js, "Must specify code address: code/native/c0deadd0.");
+        return true;
+      }

[turnidge, 2014/02/28 19:45:43]

Since this is simpler now, you could drop the helper functions (HandleBlahCode)
and combine the two cases.

[Cutch, 2014/02/28 19:48:08]

Done.

+      return HandleNativeCode(pc, js);
+    } else {
+      PrintError(js, "Unrecognized subcommand '%s'", js->GetArgument(1));
+      return true;
+    }
+  }
+  ASSERT(js->num_arguments() == 2);
   if (!GetUnsignedIntegerId(js->GetArgument(1), &pc, 16)) {
     PrintError(js, "Must specify code address: code/c0deadd0.");
     return true;
   }
-  Code& code = Code::Handle(Code::LookupCode(pc));
-  if (code.IsNull()) {
-    PrintError(js, "Could not find code at %" Px "", pc);
+  Code& code = Code::Handle();
+  code ^= Code::LookupCode(pc);
+  if (!code.IsNull()) {
+    code.PrintToJSONStream(js, false);
+    return true;
+  }
+  code ^= Code::LookupCodeInVmIsolate(pc);
+  if (!code.IsNull()) {
+    code.PrintToJSONStream(js, false);
     return true;
   }
-  code.PrintToJSONStream(js, false);
+  PrintError(js, "Could not find code at %" Px "", pc);
   return true;
 }