Add methods to enable configuration of ResourceConstraints based on limits derived at runtime.

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index 1977e68c82edf30611bfb6d7bfb141bc78074f92..d06c6d71a5f4537293dee64b7a679d6be34e541a 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -248,10 +248,12 @@ const int kRandomStateSize = 2 * kIntSize;
 const int kPointerSizeLog2 = 3;
 const intptr_t kIntptrSignBit = V8_INT64_C(0x8000000000000000);
 const uintptr_t kUintptrAllBitsSet = V8_UINT64_C(0xFFFFFFFFFFFFFFFF);
+const bool kIs64BitArch = true;

[Hannes Payer (out of office), 2013/09/24 13:43:44]

I think these two constants are not used anymore.

[rmcilroy, 2013/09/24 14:39:23]

It's used for the code_range_size_ in heap.cc.  I can change that to use
(kPointerSize == 8) if you prefer, but I think kIs64BitArch is clearer.  WDYT?

[Hannes Payer (out of office), 2013/09/24 15:32:16]

Ah, yes. Hmm, let's keep the kIs64BitArch constant. That's cleaner.

 #else
 const int kPointerSizeLog2 = 2;
 const intptr_t kIntptrSignBit = 0x80000000;
 const uintptr_t kUintptrAllBitsSet = 0xFFFFFFFFu;
+const bool kIs64BitArch = false;
 #endif
 
 const int kBitsPerByte = 8;