Adds an API for setting the stack limit per-thread.

src/execution.h

 // Copyright 2006-2008 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 141 matching lines @@
   static void SetStackLimit(uintptr_t limit);
 
   static Address address_of_jslimit() {
     return reinterpret_cast<Address>(&thread_local_.jslimit_);
   }
 
   // Threading support.
   static char* ArchiveStackGuard(char* to);
   static char* RestoreStackGuard(char* from);
   static int ArchiveSpacePerThread();
+  static void InitThread(const ExecutionAccess& lock);
 
   static bool IsStackOverflow();
   static bool IsPreempted();
   static void Preempt();
   static bool IsInterrupted();
   static void Interrupt();
   static bool IsTerminateExecution();
   static void TerminateExecution();
 #ifdef ENABLE_DEBUGGER_SUPPORT
   static bool IsDebugBreak();
@@ skipping 11 matching lines @@
   // You should hold the ExecutionAccess lock when calling this method.
   static bool IsSet(const ExecutionAccess& lock);
 
   // This provides an asynchronous read of the stack limit for the current
   // thread.  There are no locks protecting this, but it is assumed that you
   // have the global V8 lock if you are using multiple V8 threads.
   static uintptr_t climit() {
     return thread_local_.climit_;
   }
 
-  // You should hold the ExecutionAccess lock when calling this method.
-  static void set_limits(uintptr_t value, const ExecutionAccess& lock) {
-    Heap::SetStackLimit(value);
-    thread_local_.jslimit_ = value;
-    thread_local_.climit_ = value;
+  // Sets the JavaScript and C stack limits, and updates the stack
+  // limit in the heap. You should hold the ExecutionAccess lock when
+  // calling this method.
+  static void set_limits(uintptr_t jslimit, uintptr_t climit,
+                         const ExecutionAccess& lock) {
+    Heap::SetStackLimit(jslimit);
+    thread_local_.jslimit_ = jslimit;
+    thread_local_.climit_ = climit;
+  }
+
+  // You should hold the ExecutionAccess lock when calling this
+  // method.
+  static void set_illegal_limit(const ExecutionAccess& lock) {
+    set_limits(kIllegalLimit, kIllegalLimit, lock);
+  }
+
+  // You should hold the ExecutionAccess lock when calling this
+  // method.
+  static void set_interrupt_limit(const ExecutionAccess& lock) {
+    set_limits(kInterruptLimit, kInterruptLimit, lock);
   }
 
   // Reset limits to initial values. For example after handling interrupt.
   // You should hold the ExecutionAccess lock when calling this method.
   static void reset_limits(const ExecutionAccess& lock) {
     if (thread_local_.nesting_ == 0) {
       // No limits have been set yet.
-      set_limits(kIllegalLimit, lock);
+      set_illegal_limit(lock);
     } else {
-      thread_local_.jslimit_ = thread_local_.initial_jslimit_;
-      Heap::SetStackLimit(thread_local_.jslimit_);
-      thread_local_.climit_ = thread_local_.initial_climit_;
+      set_limits(thread_local_.initial_jslimit_, thread_local_.initial_climit_,
+                 lock);
     }
   }
 
   // Enable or disable interrupts.
   static void EnableInterrupts();
   static void DisableInterrupts();
 
   static const uintptr_t kLimitSize = kPointerSize * 128 * KB;
 #ifdef V8_TARGET_ARCH_X64
   static const uintptr_t kInterruptLimit = V8_UINT64_C(0xfffffffffffffffe);
@@ skipping 71 matching lines @@
       v8::Handle<v8::String> name);
   static v8::Handle<v8::Value> GC(const v8::Arguments& args);
  private:
   static const char* kSource;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_EXECUTION_H_