Initial checkin of gRPC to third_party/

third_party/grpc/include/grpc/support/tls.h

Index: third_party/grpc/include/grpc/support/tls.h
diff --git a/third_party/tcmalloc/chromium/src/base/linuxthreads.h b/third_party/grpc/include/grpc/support/tls.h
similarity index 60%
copy from third_party/tcmalloc/chromium/src/base/linuxthreads.h
copy to third_party/grpc/include/grpc/support/tls.h
index 5c318fed7ec4c47e7bf082e315992e102abcd620..43addc7f14556c8cb2832591b8eed4e9f5a77ca6 100644
--- a/third_party/tcmalloc/chromium/src/base/linuxthreads.h
+++ b/third_party/grpc/include/grpc/support/tls.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 +29,49 @@
  * (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 GRPC_SUPPORT_TLS_H
+#define GRPC_SUPPORT_TLS_H
 
-/* Include thread_lister.h to get the interface that we implement for linux.
- */
+#include <grpc/support/port_platform.h>
 
-/* 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)
+/* Thread local storage.
 
-/* Define the THREADS symbol to make sure that there is exactly one core dumper
- * built into the library.
- */
-#define THREADS "Linux /proc"
+   A minimal wrapper that should be implementable across many compilers,
+   and implementable efficiently across most modern compilers.
+
+   Thread locals have type intptr_t.
+
+   Declaring a thread local variable 'foo':
+     GPR_TLS_DECL(foo);
+   Thread locals always have static scope.
+
+   Initializing a thread local (must be done at library initialization
+   time):
+     gpr_tls_init(&foo);
+
+   Destroying a thread local:
+     gpr_tls_destroy(&foo);
 
+   Setting a thread local (returns new_value):
+     gpr_tls_set(&foo, new_value);
+
+   Accessing a thread local:
+     current_value = gpr_tls_get(&foo, value);
+
+   ALL functions here may be implemented as macros. */
+
+#ifdef GPR_GCC_TLS
+#include <grpc/support/tls_gcc.h>
+#endif
+
+#ifdef GPR_MSVC_TLS
+#include <grpc/support/tls_msvc.h>
+#endif
+
+#ifdef GPR_PTHREAD_TLS
+#include <grpc/support/tls_pthread.h>
 #endif
 
-#endif  /* _LINUXTHREADS_H */
+#endif