Initial checkin of gRPC to third_party/

third_party/grpc/src/objective-c/RxLibrary/NSEnumerator+GRXUtil.h

Index: third_party/grpc/src/objective-c/RxLibrary/NSEnumerator+GRXUtil.h
diff --git a/third_party/tcmalloc/vendor/src/base/linuxthreads.h b/third_party/grpc/src/objective-c/RxLibrary/NSEnumerator+GRXUtil.h
similarity index 61%
copy from third_party/tcmalloc/vendor/src/base/linuxthreads.h
copy to third_party/grpc/src/objective-c/RxLibrary/NSEnumerator+GRXUtil.h
index 5c318fed7ec4c47e7bf082e315992e102abcd620..0622f7067c02b5989a5853813982e41b92aaea03 100644
--- a/third_party/tcmalloc/vendor/src/base/linuxthreads.h
+++ b/third_party/grpc/src/objective-c/RxLibrary/NSEnumerator+GRXUtil.h
@@ -1,4 +1,6 @@
-/* Copyright (c) 2005-2007, Google Inc.
+/*
+ *
+ * Copyright 2015, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -27,27 +29,29 @@
  * (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
+#import <Foundation/Foundation.h>
 
-/* Include thread_lister.h to get the interface that we implement for linux.
- */
+@interface NSEnumerator (GRXUtil)
 
-/* We currently only support x86-32 and x86-64 on Linux. Porting to other
- * related platforms should not be difficult.
+/**
+ * Returns a NSEnumerator instance that iterates through the elements of the passed container that
+ * supports fast enumeration. Note that this negates the speed benefits of fast enumeration over
+ * NSEnumerator. It's only intended for the rare cases when one needs the latter and only has the
+ * former, e.g. for iteration that needs to be paused and resumed later.
  */
-#if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) || \
-     defined(__mips__) || defined(__PPC__)) && defined(__linux)
++ (NSEnumerator *)grx_enumeratorWithContainer:(id<NSFastEnumeration>)container;
 
-/* Define the THREADS symbol to make sure that there is exactly one core dumper
- * built into the library.
+/**
+ * Returns a NSEnumerator instance that provides a single object before finishing. The value is then
+ * released.
  */
-#define THREADS "Linux /proc"
++ (NSEnumerator *)grx_enumeratorWithSingleValue:(id)value;
 
-#endif
-
-#endif  /* _LINUXTHREADS_H */
+/**
+ * Returns a NSEnumerator instance that delegates the invocations of nextObject to the passed block.
+ * When the block first returns nil, it is released.
+ */
++ (NSEnumerator *)grx_enumeratorWithValueSupplier:(id (^)())block;
+@end