Initial checkin of gRPC to third_party/

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

Index: third_party/grpc/src/objective-c/RxLibrary/NSEnumerator+GRXUtil.m
diff --git a/third_party/tcmalloc/chromium/src/base/synchronization_profiling.h b/third_party/grpc/src/objective-c/RxLibrary/NSEnumerator+GRXUtil.m
similarity index 67%
copy from third_party/tcmalloc/chromium/src/base/synchronization_profiling.h
copy to third_party/grpc/src/objective-c/RxLibrary/NSEnumerator+GRXUtil.m
index cf02c218a111806189f71f7b528a83b5ceb164a4..5fc81e329289a53c6acad26f627cc68396f93938 100644
--- a/third_party/tcmalloc/chromium/src/base/synchronization_profiling.h
+++ b/third_party/grpc/src/objective-c/RxLibrary/NSEnumerator+GRXUtil.m
@@ -1,4 +1,6 @@
-/* Copyright (c) 2010, Google Inc.
+/*
+ *
+ * Copyright 2015, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -27,24 +29,26 @@
  * (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: Chris Ruemmler
  */
 
-#ifndef BASE_AUXILIARY_SYNCHRONIZATION_PROFILING_H_
-#define BASE_AUXILIARY_SYNCHRONIZATION_PROFILING_H_
+#import "NSEnumerator+GRXUtil.h"
+
+#import "private/GRXNSBlockEnumerator.h"
+#import "private/GRXNSFastEnumerator.h"
+#import "private/GRXNSScalarEnumerator.h"
 
-#include "base/basictypes.h"
+@implementation NSEnumerator (GRXUtil)
 
-namespace base {
++ (NSEnumerator *)grx_enumeratorWithContainer:(id<NSFastEnumeration>)container {
+  // TODO(jcanizales): Consider checking if container responds to objectEnumerator and return that?
+  return [[GRXNSFastEnumerator alloc] initWithContainer:container];
+}
 
-// We can do contention-profiling of SpinLocks, but the code is in
-// mutex.cc, which is not always linked in with spinlock.  Hence we
-// provide a weak definition, which are used if mutex.cc isn't linked in.
++ (NSEnumerator *)grx_enumeratorWithSingleValue:(id)value {
+  return [[GRXNSScalarEnumerator alloc] initWithValue:value];
+}
 
-// Submit the number of cycles the spinlock spent contending.
-ATTRIBUTE_WEAK extern void SubmitSpinLockProfileData(const void *, int64);
-extern void SubmitSpinLockProfileData(const void *contendedlock,
-                                      int64 wait_cycles) {}
++ (NSEnumerator *)grx_enumeratorWithValueSupplier:(id (^)())block {
+  return [[GRXNSBlockEnumerator alloc] initWithValueSupplier:block];
 }
-#endif  // BASE_AUXILIARY_SYNCHRONIZATION_PROFILING_H_
+@end