Adding 'isolates' argument to LOG to get rid of multiple TLS fetches in profiling.

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 838 matching lines @@
   }
 
   LPVOID mbase = VirtualAlloc(reinterpret_cast<void *>(address),
                               msize,
                               MEM_COMMIT | MEM_RESERVE,
                               prot);
   if (mbase == NULL && address != 0)
     mbase = VirtualAlloc(NULL, msize, MEM_COMMIT | MEM_RESERVE, prot);
 
   if (mbase == NULL) {
-    LOG(StringEvent("OS::Allocate", "VirtualAlloc failed"));
+    LOG(ISOLATE, StringEvent("OS::Allocate", "VirtualAlloc failed"));
     return NULL;
   }
 
   ASSERT(IsAligned(reinterpret_cast<size_t>(mbase), OS::AllocateAlignment()));
 
   *allocated = msize;
   UpdateAllocatedSpaceLimits(mbase, static_cast<int>(msize));
   return mbase;
 }
 
@@ skipping 322 matching lines @@
         0,                                                    // hFile
         reinterpret_cast<PSTR>(module_entry.szExePath),       // ImageName
         reinterpret_cast<PSTR>(module_entry.szModule),        // ModuleName
         reinterpret_cast<DWORD64>(module_entry.modBaseAddr),  // BaseOfDll
         module_entry.modBaseSize);                            // SizeOfDll
     if (base == 0) {
       int err = GetLastError();
       if (err != ERROR_MOD_NOT_FOUND &&
           err != ERROR_INVALID_HANDLE) return false;
     }
-    LOG(SharedLibraryEvent(
+    LOG(i::Isolate::Current(),
+        SharedLibraryEvent(
             module_entry.szExePath,
             reinterpret_cast<unsigned int>(module_entry.modBaseAddr),
             reinterpret_cast<unsigned int>(module_entry.modBaseAddr +
                                            module_entry.modBaseSize)));
     cont = _Module32NextW(snapshot, &module_entry);
   }
   CloseHandle(snapshot);
 
   symbols_loaded = true;
   return true;
@@ skipping 806 matching lines @@
 
 void Sampler::Stop() {
   ASSERT(IsActive());
   SamplerThread::RemoveActiveSampler(this);
   SetActive(false);
 }
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal