Initial isolate reload support

runtime/vm/flow_graph_compiler.cc

 // Copyright (c) 2013, 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/globals.h"  // Needed here to get TARGET_ARCH_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/bit_vector.h"
 #include "vm/cha.h"
@@ skipping 44 matching lines @@
 DECLARE_FLAG(charp, stacktrace_filter);
 DECLARE_FLAG(bool, trace_compiler);
 DECLARE_FLAG(int, inlining_hotness);
 DECLARE_FLAG(int, inlining_size_threshold);
 DECLARE_FLAG(int, inlining_callee_size_threshold);
 DECLARE_FLAG(int, inline_getters_setters_smaller_than);
 DECLARE_FLAG(int, inlining_depth_threshold);
 DECLARE_FLAG(int, inlining_caller_size_threshold);
 DECLARE_FLAG(int, inlining_constant_arguments_max_size_threshold);
 DECLARE_FLAG(int, inlining_constant_arguments_min_size_threshold);
+DECLARE_FLAG(int, reload_every);
 
 static void PrecompilationModeHandler(bool value) {
   if (value) {
 #if defined(TARGET_ARCH_IA32)
     FATAL("Precompilation not supported on IA32");
 #endif
 
     // Flags affecting compilation only:
     // There is no counter feedback in precompilation, so ignore the counter
     // when making inlining decisions.
@@ skipping 271 matching lines @@
   return CanOptimize() && !parsed_function().function().HasBreakpoint();
 }
 
 
 bool FlowGraphCompiler::CanOSRFunction() const {
   return FLAG_use_osr & CanOptimizeFunction() && !is_optimizing();
 }
 
 
 bool FlowGraphCompiler::ForceSlowPathForStackOverflow() const {
-  if (FLAG_stacktrace_every > 0 || FLAG_deoptimize_every > 0) {
+  if ((FLAG_stacktrace_every > 0) ||
+      (FLAG_deoptimize_every > 0) ||
+      (FLAG_reload_every > 0)) {
     return true;
   }
   if (FLAG_stacktrace_filter != NULL &&
       strstr(parsed_function().function().ToFullyQualifiedCString(),
              FLAG_stacktrace_filter) != NULL) {
     return true;
   }
   if (is_optimizing() &&
       FLAG_deoptimize_filter != NULL &&
       strstr(parsed_function().function().ToFullyQualifiedCString(),
@@ skipping 1620 matching lines @@
 
 
 void FlowGraphCompiler::FrameStateClear() {
   ASSERT(!is_optimizing());
   frame_state_.TruncateTo(0);
 }
 #endif  // defined(DEBUG) && !defined(TARGET_ARCH_DBC)
 
 
 }  // namespace dart