Revert "Work around Windows-only V8 concurrent initialization crash"

This fix is no longer necessary as the underlying V8 bug has been
fixed upstream.

This reverts commit 48bcfce09e11901244447617be2eb7789427eab0.

1 files changed, 1 insertions, 18 deletions

diff --git a/core/libdeno/api.cc b/core/libdeno/api.cc
index bcdf7131b..8a3a56156 100644
--- a/core/libdeno/api.cc
+++ b/core/libdeno/api.cc
@@ -5,10 +5,6 @@
 #include <iostream>
 #include <string>
 
-// Cpplint bans the use of <mutex> because it duplicates functionality in
-// chromium //base. However Deno doensn't use that, so suppress this lint.
-#include <mutex>  // NOLINT
-
 #include "third_party/v8/include/libplatform/libplatform.h"
 #include "third_party/v8/include/v8.h"
 #include "third_party/v8/src/base/logging.h"
@@ -57,20 +53,7 @@ Deno* deno_new(deno_config config) {
     params.snapshot_blob = &d->snapshot_;
   }
 
-  v8::Isolate* isolate;
-  {
-#ifdef _WIN32
-    // Work around an apparent V8 bug where initializing multiple isolates
-    // concurrently leads to a crash. At the time of writing the cause of this
-    // crash is not exactly understood, but it seems to be related to the V8
-    // internal function win64_unwindinfo::RegisterNonABICompliantCodeRange(),
-    // which didn't exist in older versions of V8.
-    static std::mutex mutex;
-    std::lock_guard<std::mutex> lock(mutex);
-#endif
-    isolate = v8::Isolate::New(params);
-  }
-
+  v8::Isolate* isolate = v8::Isolate::New(params);
   d->AddIsolate(isolate);
 
   v8::Locker locker(isolate);