Disable --deoptimize-every/--stacktrace-every in kernel isolate

runtime/vm/runtime_entry.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/runtime_entry.h"
 
 #include "vm/assembler.h"
 #include "vm/ast.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
 #include "vm/deopt_instructions.h"
 #include "vm/exceptions.h"
 #include "vm/flags.h"
+#include "vm/kernel_isolate.h"
 #include "vm/message.h"
 #include "vm/message_handler.h"
 #include "vm/object_store.h"
 #include "vm/parser.h"
 #include "vm/resolver.h"
 #include "vm/service_isolate.h"
 #include "vm/stack_frame.h"
 #include "vm/symbols.h"
 #include "vm/thread_registry.h"
 #include "vm/verifier.h"
@@ skipping 1595 matching lines @@
 #if !defined(PRODUCT)
   // The following code is used to stress test deoptimization and
   // debugger stack tracing.
   bool do_deopt = false;
   bool do_stacktrace = false;
   bool do_reload = false;
   const intptr_t isolate_reload_every =
       isolate->reload_every_n_stack_overflow_checks();
   if ((FLAG_deoptimize_every > 0) || (FLAG_stacktrace_every > 0) ||
       (isolate_reload_every > 0)) {
-    // TODO(turnidge): To make --deoptimize_every and
-    // --stacktrace-every faster we could move this increment/test to
-    // the generated code.
-    int32_t count = thread->IncrementAndGetStackOverflowCount();
-    if (FLAG_deoptimize_every > 0 && (count % FLAG_deoptimize_every) == 0) {
-      do_deopt = true;
-    }
-    if (FLAG_stacktrace_every > 0 && (count % FLAG_stacktrace_every) == 0) {
-      do_stacktrace = true;
-    }
-    if ((isolate_reload_every > 0) && (count % isolate_reload_every) == 0) {
-      do_reload = isolate->CanReload();
+#if defined(DART_PRECOMPILED_RUNTIME)
+    const bool is_kernel_isolate = false;
+#else
+    // Certain flags should not effect the kernel isolate itself.  They might be
+    // used by tests via the "VMOptions=--..." annotation to test VM
+    // functionality in the main isolate.
+    const bool is_kernel_isolate = KernelIsolate::IsKernelIsolate(isolate);
+#endif  // !defined(DART_PRECOMPILED_RUNTIME)
+    if (!is_kernel_isolate) {
+      // TODO(turnidge): To make --deoptimize_every and
+      // --stacktrace-every faster we could move this increment/test to
+      // the generated code.
+      int32_t count = thread->IncrementAndGetStackOverflowCount();
+      if (FLAG_deoptimize_every > 0 && (count % FLAG_deoptimize_every) == 0) {
+        do_deopt = true;
+      }
+      if (FLAG_stacktrace_every > 0 && (count % FLAG_stacktrace_every) == 0) {
+        do_stacktrace = true;
+      }
+      if ((isolate_reload_every > 0) && (count % isolate_reload_every) == 0) {
+        do_reload = isolate->CanReload();
+      }
     }
   }
   if ((FLAG_deoptimize_filter != NULL) || (FLAG_stacktrace_filter != NULL) ||
       FLAG_reload_every_optimized) {
     DartFrameIterator iterator(thread,
                                StackFrameIterator::kNoCrossThreadIteration);
     StackFrame* frame = iterator.NextFrame();
     ASSERT(frame != NULL);
     const Code& code = Code::Handle(frame->LookupDartCode());
     ASSERT(!code.IsNull());
@@ skipping 707 matching lines @@
     true /* is_float */,
     reinterpret_cast<RuntimeFunction>(static_cast<UnaryMathCFunction>(&tan)));
 
 DEFINE_RAW_LEAF_RUNTIME_ENTRY(
     LibcAtan,
     1,
     true /* is_float */,
     reinterpret_cast<RuntimeFunction>(static_cast<UnaryMathCFunction>(&atan)));
 
 }  // namespace dart