Initial checkin of gRPC to third_party/

third_party/grpc/include/grpc++/impl/codegen/completion_queue_tag.h

Index: third_party/grpc/include/grpc++/impl/codegen/completion_queue_tag.h
diff --git a/third_party/tcmalloc/vendor/src/base/linuxthreads.h b/third_party/grpc/include/grpc++/impl/codegen/completion_queue_tag.h
similarity index 70%
copy from third_party/tcmalloc/vendor/src/base/linuxthreads.h
copy to third_party/grpc/include/grpc++/impl/codegen/completion_queue_tag.h
index 5c318fed7ec4c47e7bf082e315992e102abcd620..8be2ac36d6e85e83211e7d827e7fdbb5446c35d2 100644
--- a/third_party/tcmalloc/vendor/src/base/linuxthreads.h
+++ b/third_party/grpc/include/grpc++/impl/codegen/completion_queue_tag.h
@@ -1,4 +1,6 @@
-/* Copyright (c) 2005-2007, Google Inc.
+/*
+ *
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -27,27 +29,24 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- * ---
- * Author: Markus Gutschke
  */
 
-#ifndef _LINUXTHREADS_H
-#define _LINUXTHREADS_H
+#ifndef GRPCXX_COMPLETION_QUEUE_TAG_H
+#define GRPCXX_COMPLETION_QUEUE_TAG_H
 
-/* Include thread_lister.h to get the interface that we implement for linux.
- */
+namespace grpc {
 
-/* We currently only support x86-32 and x86-64 on Linux. Porting to other
- * related platforms should not be difficult.
- */
-#if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) || \
-     defined(__mips__) || defined(__PPC__)) && defined(__linux)
-
-/* Define the THREADS symbol to make sure that there is exactly one core dumper
- * built into the library.
- */
-#define THREADS "Linux /proc"
+/// An interface allowing implementors to process and filter event tags.
+class CompletionQueueTag {
+ public:
+  virtual ~CompletionQueueTag() {}
+  // Called prior to returning from Next(), return value is the status of the
+  // operation (return status is the default thing to do). If this function
+  // returns false, the tag is dropped and not returned from the completion
+  // queue
+  virtual bool FinalizeResult(void** tag, bool* status) = 0;
+};
 
-#endif
+}  // namespace grpc
 
-#endif  /* _LINUXTHREADS_H */
+#endif  // GRPCXX_COMPLETION_QUEUE_TAG_H