Thread the current isolate through a few places, avoiding Isolate::Current().

This removes approx. 12k calls of Isolate::Current() in string-tagcloud.

Review URL: https://chromiumcodereview.appspot.com/9490004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10856 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/regexp-macro-assembler-arm.cc

@@ -1055,7 +1055,7 @@ int RegExpMacroAssemblerARM::CheckStackGuardState(Address* return_address,
   ASSERT(*return_address <=
       re_code->instruction_start() + re_code->instruction_size());
 
-  MaybeObject* result = Execution::HandleStackGuardInterrupt();
+  MaybeObject* result = Execution::HandleStackGuardInterrupt(isolate);
 
   if (*code_handle != re_code) {  // Return address no longer valid
     int delta = code_handle->address() - re_code->address();

src/execution.cc

@@ -872,8 +872,7 @@ void Execution::ProcessDebugMessages(bool debug_command_only) {
 
 #endif
 
-MaybeObject* Execution::HandleStackGuardInterrupt() {
+MaybeObject* Execution::HandleStackGuardInterrupt(Isolate* isolate) {
-  Isolate* isolate = Isolate::Current();
   StackGuard* stack_guard = isolate->stack_guard();
 
   if (stack_guard->IsGCRequest()) {

src/execution.h

@@ -45,6 +45,10 @@ enum InterruptFlag {
   GC_REQUEST = 1 << 6
 };
 
+
+class Isolate;
+
+
 class Execution : public AllStatic {
  public:
   // Call a function, the caller supplies a receiver and an array
@@ -141,7 +145,8 @@ class Execution : public AllStatic {
 
   // If the stack guard is triggered, but it is not an actual
   // stack overflow, then handle the interruption accordingly.
-  MUST_USE_RESULT static MaybeObject* HandleStackGuardInterrupt();
+  MUST_USE_RESULT static MaybeObject* HandleStackGuardInterrupt(
+      Isolate* isolate);
 
   // Get a function delegate (or undefined) for the given non-function
   // object. Used for support calling objects as functions.
@@ -158,7 +163,6 @@ class Execution : public AllStatic {
 
 
 class ExecutionAccess;
-class Isolate;
 
 
 // StackGuard contains the handling of the limits that are used to limit the

src/ia32/regexp-macro-assembler-ia32.cc

@@ -1085,7 +1085,7 @@ int RegExpMacroAssemblerIA32::CheckStackGuardState(Address* return_address,
   ASSERT(*return_address <=
       re_code->instruction_start() + re_code->instruction_size());
 
-  MaybeObject* result = Execution::HandleStackGuardInterrupt();
+  MaybeObject* result = Execution::HandleStackGuardInterrupt(isolate);
 
   if (*code_handle != re_code) {  // Return address no longer valid
     int delta = code_handle->address() - re_code->address();

src/jsregexp.cc

@@ -175,7 +175,8 @@ Handle<Object> RegExpImpl::Exec(Handle<JSRegExp> regexp,
     case JSRegExp::IRREGEXP: {
       Handle<Object> result =
           IrregexpExec(regexp, subject, index, last_match_info);
-      ASSERT(!result.is_null() || Isolate::Current()->has_pending_exception());
+      ASSERT(!result.is_null() ||
+             regexp->GetIsolate()->has_pending_exception());
       return result;
     }
     default:
@@ -527,6 +528,7 @@ Handle<Object> RegExpImpl::IrregexpExec(Handle<JSRegExp> jsregexp,
                                         Handle<String> subject,
                                         int previous_index,
                                         Handle<JSArray> last_match_info) {
+  Isolate* isolate = jsregexp->GetIsolate();
   ASSERT_EQ(jsregexp->TypeTag(), JSRegExp::IRREGEXP);
 
   // Prepare space for the return values.
@@ -542,11 +544,11 @@ Handle<Object> RegExpImpl::IrregexpExec(Handle<JSRegExp> jsregexp,
   int required_registers = RegExpImpl::IrregexpPrepare(jsregexp, subject);
   if (required_registers < 0) {
     // Compiling failed with an exception.
-    ASSERT(Isolate::Current()->has_pending_exception());
+    ASSERT(isolate->has_pending_exception());
     return Handle<Object>::null();
   }
 
-  OffsetsVector registers(required_registers);
+  OffsetsVector registers(required_registers, isolate);
 
   IrregexpResult res = RegExpImpl::IrregexpExecOnce(
       jsregexp, subject, previous_index, Vector<int>(registers.vector(),
@@ -568,11 +570,11 @@ Handle<Object> RegExpImpl::IrregexpExec(Handle<JSRegExp> jsregexp,
     return last_match_info;
   }
   if (res == RE_EXCEPTION) {
-    ASSERT(Isolate::Current()->has_pending_exception());
+    ASSERT(isolate->has_pending_exception());
     return Handle<Object>::null();
   }
   ASSERT(res == RE_FAILURE);
-  return Isolate::Current()->factory()->null_value();
+  return isolate->factory()->null_value();
 }
 
 

src/jsregexp.h

@@ -1466,12 +1466,12 @@ class RegExpEngine: public AllStatic {
 
 class OffsetsVector {
  public:
-  explicit inline OffsetsVector(int num_registers)
+  inline OffsetsVector(int num_registers, Isolate* isolate)
       : offsets_vector_length_(num_registers) {
     if (offsets_vector_length_ > Isolate::kJSRegexpStaticOffsetsVectorSize) {
       vector_ = NewArray<int>(offsets_vector_length_);
     } else {
-      vector_ = Isolate::Current()->jsregexp_static_offsets_vector();
+      vector_ = isolate->jsregexp_static_offsets_vector();
     }
   }
   inline ~OffsetsVector() {

src/mips/regexp-macro-assembler-mips.cc

@@ -1056,7 +1056,7 @@ int RegExpMacroAssemblerMIPS::CheckStackGuardState(Address* return_address,
   ASSERT(*return_address <=
       re_code->instruction_start() + re_code->instruction_size());
 
-  MaybeObject* result = Execution::HandleStackGuardInterrupt();
+  MaybeObject* result = Execution::HandleStackGuardInterrupt(isolate);
 
   if (*code_handle != re_code) {  // Return address no longer valid.
     int delta = code_handle->address() - re_code->address();

src/runtime.cc

@@ -3763,7 +3763,7 @@ static RegExpImpl::IrregexpResult SearchRegExpNoCaptureMultiple(
   int required_registers = RegExpImpl::IrregexpPrepare(regexp, subject);
   if (required_registers < 0) return RegExpImpl::RE_EXCEPTION;
 
-  OffsetsVector registers(required_registers);
+  OffsetsVector registers(required_registers, isolate);
   Vector<int32_t> register_vector(registers.vector(), registers.length());
   int subject_length = subject->length();
   bool first = true;
@@ -3836,7 +3836,7 @@ static RegExpImpl::IrregexpResult SearchRegExpMultiple(
   int required_registers = RegExpImpl::IrregexpPrepare(regexp, subject);
   if (required_registers < 0) return RegExpImpl::RE_EXCEPTION;
 
-  OffsetsVector registers(required_registers);
+  OffsetsVector registers(required_registers, isolate);
   Vector<int32_t> register_vector(registers.vector(), registers.length());
 
   RegExpImpl::IrregexpResult result =
@@ -3855,7 +3855,7 @@ static RegExpImpl::IrregexpResult SearchRegExpMultiple(
   if (result == RegExpImpl::RE_SUCCESS) {
     // Need to keep a copy of the previous match for creating last_match_info
     // at the end, so we have two vectors that we swap between.
-    OffsetsVector registers2(required_registers);
+    OffsetsVector registers2(required_registers, isolate);
     Vector<int> prev_register_vector(registers2.vector(), registers2.length());
     bool first = true;
     do {
@@ -9200,13 +9200,13 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_StackGuard) {
     return isolate->StackOverflow();
   }
 
-  return Execution::HandleStackGuardInterrupt();
+  return Execution::HandleStackGuardInterrupt(isolate);
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_Interrupt) {
   ASSERT(args.length() == 0);
-  return Execution::HandleStackGuardInterrupt();
+  return Execution::HandleStackGuardInterrupt(isolate);
 }
 
 

src/x64/regexp-macro-assembler-x64.cc

@@ -1192,7 +1192,7 @@ int RegExpMacroAssemblerX64::CheckStackGuardState(Address* return_address,
   ASSERT(*return_address <=
       re_code->instruction_start() + re_code->instruction_size());
 
-  MaybeObject* result = Execution::HandleStackGuardInterrupt();
+  MaybeObject* result = Execution::HandleStackGuardInterrupt(isolate);
 
   if (*code_handle != re_code) {  // Return address no longer valid
     intptr_t delta = code_handle->address() - re_code->address();