make gc branch compile on Win32.

src/platform-win32.cc

 // 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 1394 matching lines @@
     return false;
   }
 
   UpdateAllocatedSpaceLimits(address, static_cast<int>(size));
   return true;
 }
 
 
 bool VirtualMemory::Uncommit(void* address, size_t size) {
   ASSERT(IsReserved());
   return VirtualFree(address, size, MEM_DECOMMIT) != false;

[Vyacheslav Egorov (Chromium), 2011/06/28 12:28:37]

I think on Linux these methods are expressed via *Region methods.

[Lasse Reichstein, 2011/06/29 10:54:58]

Doesn't seem any shorter, but perhaps a little cleaner. I'll change them.

 }
 
 
+void* VirtualMemory::ReserveRegion(size_t size) {
+  return VirtualAlloc(NULL, size, MEM_RESERVE, PAGE_NOACCESS);
+}
+
+
+bool VirtualMemory::CommitRegion(void* base, size_t size, bool is_executable) {
+  int prot = is_executable ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE;
+  if (NULL == VirtualAlloc(base, size, MEM_COMMIT, prot)) {
+    return false;
+  }
+
+  UpdateAllocatedSpaceLimits(base, static_cast<int>(size));
+  return true;
+}
+
+
+bool VirtualMemory::UncommitRegion(void* base, size_t size) {
+  return VirtualFree(base, size, MEM_DECOMMIT) != false;
+}
+
+
+bool VirtualMemory::ReleaseRegion(void* base, size_t size) {
+  return VirtualFree(base, size, MEM_DECOMMIT) != false;
+}
+
+
+
 // ----------------------------------------------------------------------------
 // Win32 thread support.
 
 // Definition of invalid thread handle and id.
 static const HANDLE kNoThread = INVALID_HANDLE_VALUE;
 static const DWORD kNoThreadId = 0;
 
 
 class ThreadHandle::PlatformData : public Malloced {
  public:
@@ skipping 536 matching lines @@
 
   // Release the thread handles
   CloseHandle(data_->sampler_thread_);
   CloseHandle(data_->profiled_thread_);
 }
 
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal