Initial checkin of gRPC to third_party/

third_party/grpc/src/core/support/env.h

Index: third_party/grpc/src/core/support/env.h
diff --git a/third_party/tcmalloc/vendor/src/base/linuxthreads.h b/third_party/grpc/src/core/support/env.h
similarity index 68%
copy from third_party/tcmalloc/vendor/src/base/linuxthreads.h
copy to third_party/grpc/src/core/support/env.h
index 5c318fed7ec4c47e7bf082e315992e102abcd620..24172d86737eceb6ccfbd4f4bb854b0d2bbbe4f8 100644
--- a/third_party/tcmalloc/vendor/src/base/linuxthreads.h
+++ b/third_party/grpc/src/core/support/env.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 +29,32 @@
  * (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_INTERNAL_CORE_SUPPORT_ENV_H
+#define GRPC_INTERNAL_CORE_SUPPORT_ENV_H
 
-/* Include thread_lister.h to get the interface that we implement for linux.
- */
+#include <stdio.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)
+#include <grpc/support/slice.h>
 
-/* Define the THREADS symbol to make sure that there is exactly one core dumper
- * built into the library.
- */
-#define THREADS "Linux /proc"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Env utility functions */
+
+/* Gets the environment variable value with the specified name.
+   Returns a newly allocated string. It is the responsability of the caller to
+   gpr_free the return value if not NULL (which means that the environment
+   variable exists). */
+char *gpr_getenv(const char *name);
+
+/* Sets the the environment with the specified name to the specified value. */
+void gpr_setenv(const char *name, const char *value);
 
+#ifdef __cplusplus
+}
 #endif
 
-#endif  /* _LINUXTHREADS_H */
+#endif /* GRPC_INTERNAL_CORE_SUPPORT_ENV_H */