some random isolate threading

src/checks.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 13 matching lines @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <stdarg.h>
 
 #include "v8.h"
 
 #include "platform.h"
 
-// TODO(isolates): is it necessary to lift this?
-static int fatal_error_handler_nesting_depth = 0;
-
 // Contains protection against recursive calls (faults while handling faults).
 extern "C" void V8_Fatal(const char* file, int line, const char* format, ...) {
   i::AllowHandleDereference allow_deref;
   i::AllowDeferredHandleDereference allow_deferred_deref;
   fflush(stdout);
   fflush(stderr);
-  fatal_error_handler_nesting_depth++;
-  // First time we try to print an error message
-  if (fatal_error_handler_nesting_depth < 2) {
-    i::OS::PrintError("\n\n#\n# Fatal error in %s, line %d\n# ", file, line);
-    va_list arguments;
-    va_start(arguments, format);
-    i::OS::VPrintError(format, arguments);
-    va_end(arguments);
-    i::OS::PrintError("\n#\n");
-    i::OS::DumpBacktrace();
-  }
-  // First two times we may try to print a stack dump.
-  if (fatal_error_handler_nesting_depth < 3) {
-    if (i::FLAG_stack_trace_on_abort) {
-      // Call this one twice on double fault
-      i::Isolate::Current()->PrintStack(stderr);
-    }
-  }
+  i::OS::PrintError("\n\n#\n# Fatal error in %s, line %d\n# ", file, line);
+  va_list arguments;
+  va_start(arguments, format);
+  i::OS::VPrintError(format, arguments);
+  va_end(arguments);
+  i::OS::PrintError("\n#\n");
+  i::OS::DumpBacktrace();
   i::OS::Abort();
 }
 
 
 void CheckEqualsHelper(const char* file,
                        int line,
                        const char* expected_source,
                        v8::Handle<v8::Value> expected,
                        const char* value_source,
                        v8::Handle<v8::Value> value) {
@@ skipping 33 matching lines @@
 
 
 namespace v8 { namespace internal {
 
   bool EnableSlowAsserts() { return FLAG_enable_slow_asserts; }
 
   intptr_t HeapObjectTagMask() { return kHeapObjectTagMask; }
 
 } }  // namespace v8::internal