Merge bleeding edge up to 8774 into the GC branch.

src/platform-win32.cc

Index: src/platform-win32.cc
===================================================================
--- src/platform-win32.cc	(revision 8778)
+++ src/platform-win32.cc	(working copy)
@@ -740,6 +740,24 @@
 }
 
 
+FILE* OS::OpenTemporaryFile() {
+  // tmpfile_s tries to use the root dir, don't use it.
+  char tempPathBuffer[MAX_PATH];
+  DWORD path_result = 0;
+  path_result = GetTempPathA(MAX_PATH, tempPathBuffer);
+  if (path_result > MAX_PATH || path_result == 0) return NULL;
+  UINT name_result = 0;
+  char tempNameBuffer[MAX_PATH];
+  name_result = GetTempFileNameA(tempPathBuffer, "", 0, tempNameBuffer);
+  if (name_result == 0) return NULL;
+  FILE* result = FOpen(tempNameBuffer, "w+");  // Same mode as tmpfile uses.
+  if (result != NULL) {
+    Remove(tempNameBuffer);  // Delete on close.
+  }
+  return result;
+}
+
+
 // Open log file in binary mode to avoid /n -> /r/n conversion.
 const char* const OS::LogFileOpenMode = "wb";
 
@@ -939,25 +957,12 @@
 }
 
 
-#ifdef ENABLE_HEAP_PROTECTION
-
-void OS::Protect(void* address, size_t size) {
-  // TODO(1240712): VirtualProtect has a return value which is ignored here.
-  DWORD old_protect;
-  VirtualProtect(address, size, PAGE_READONLY, &old_protect);
+void OS::Guard(void* address, const size_t size) {
+  DWORD oldprotect;
+  VirtualProtect(address, size, PAGE_READONLY | PAGE_GUARD, &oldprotect);
 }
 
 
-void OS::Unprotect(void* address, size_t size, bool is_executable) {
-  // TODO(1240712): VirtualProtect has a return value which is ignored here.
-  DWORD new_protect = is_executable ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE;
-  DWORD old_protect;
-  VirtualProtect(address, size, new_protect, &old_protect);
-}
-
-#endif
-
-
 void OS::Sleep(int milliseconds) {
   ::Sleep(milliseconds);
 }
@@ -1883,8 +1888,6 @@
 }
 
 
-#ifdef ENABLE_LOGGING_AND_PROFILING
-
 // ----------------------------------------------------------------------------
 // Win32 profiler support.
 
@@ -2059,6 +2062,5 @@
   SetActive(false);
 }
 
-#endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal