--predictable mode added

src/flag-definitions.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 51 matching lines @@
   { Flag::TYPE_##ftype, #nam, &FLAG_##nam, &FLAGDEFAULT_##nam, cmt, false },
 #define FLAG_ALIAS(ftype, ctype, alias, nam) \
   { Flag::TYPE_##ftype, #alias, &FLAG_##nam, &FLAGDEFAULT_##nam, \
     "alias for --"#nam, false },
 
 // We produce the code to set flags when it is implied by another flag.
 #elif defined(FLAG_MODE_DEFINE_IMPLICATIONS)
 #define DEFINE_implication(whenflag, thenflag) \
   if (FLAG_##whenflag) FLAG_##thenflag = true;
 
+#define DEFINE_neg_implication(whenflag, thenflag) \
+  if (FLAG_##whenflag) FLAG_##thenflag = false;
+
 #else
 #error No mode supplied when including flags.defs
 #endif
 
 // Dummy defines for modes where it is not relevant.
 #ifndef FLAG_FULL
 #define FLAG_FULL(ftype, ctype, nam, def, cmt)
 #endif
 
 #ifndef FLAG_READONLY
 #define FLAG_READONLY(ftype, ctype, nam, def, cmt)
 #endif
 
 #ifndef FLAG_ALIAS
 #define FLAG_ALIAS(ftype, ctype, alias, nam)
 #endif
 
 #ifndef DEFINE_implication
 #define DEFINE_implication(whenflag, thenflag)
 #endif
 
+#ifndef DEFINE_neg_implication
+#define DEFINE_neg_implication(whenflag, thenflag)
+#endif
+
 #define COMMA ,
 
 #ifdef FLAG_MODE_DECLARE
 // Structure used to hold a collection of arguments to the JavaScript code.
 struct JSArguments {
 public:
   inline const char*& operator[] (int idx) const {
     return argv[idx];
   }
   static JSArguments Create(int argc, const char** argv) {
@@ skipping 518 matching lines @@
 #endif
 
 // mksnapshot.cc
 DEFINE_string(extra_code, NULL, "A filename with extra code to be included in"
                   " the snapshot (mksnapshot only)")
 
 // code-stubs-hydrogen.cc
 DEFINE_bool(profile_hydrogen_code_stub_compilation, false,
             "Print the time it takes to lazily compile hydrogen code stubs.")
 
+DEFINE_bool(predictable, false, "enable predictable mode")
+DEFINE_neg_implication(predictable, randomize_hashes)
+DEFINE_neg_implication(predictable, concurrent_recompilation)
+DEFINE_neg_implication(predictable, concurrent_osr)
+DEFINE_neg_implication(predictable, concurrent_sweeping)
+DEFINE_neg_implication(predictable, parallel_sweeping)
+
+
 //
 // Dev shell flags
 //
 
 DEFINE_bool(help, false, "Print usage message, including flags, on console")
 DEFINE_bool(dump_counters, false, "Dump counters on exit")
 
 #ifdef ENABLE_DEBUGGER_SUPPORT
 DEFINE_bool(debugger, false, "Enable JavaScript debugger")
 DEFINE_bool(remote_debugger, false, "Connect JavaScript debugger to the "
@@ skipping 227 matching lines @@
 #undef FLAG
 #undef FLAG_ALIAS
 
 #undef DEFINE_bool
 #undef DEFINE_maybe_bool
 #undef DEFINE_int
 #undef DEFINE_string
 #undef DEFINE_float
 #undef DEFINE_args
 #undef DEFINE_implication
+#undef DEFINE_neg_implication
 #undef DEFINE_ALIAS_bool
 #undef DEFINE_ALIAS_int
 #undef DEFINE_ALIAS_string
 #undef DEFINE_ALIAS_float
 #undef DEFINE_ALIAS_args
 
 #undef FLAG_MODE_DECLARE
 #undef FLAG_MODE_DEFINE
 #undef FLAG_MODE_DEFINE_DEFAULTS
 #undef FLAG_MODE_META
 #undef FLAG_MODE_DEFINE_IMPLICATIONS
 
 #undef COMMA