Add farmhash fingerprint64 into hash.h and include corresponding dependencies.

Change: 122273744

farmhash.BUILD

@@ -0,0 +1,21 @@
+package(default_visibility = ["//visibility:public"])
+
+prefix_dir = "farmhash-34c13ddfab0e35422f4c3979f360635a8c050260"
+
+genrule(
+    name = "configure",
+    srcs = glob(
+        ["**/*"],
+        exclude = [prefix_dir + "/config.h"],
+    ),
+    outs = [prefix_dir + "/config.h"],
+    cmd = "pushd external/farmhash_archive/%s; workdir=$$(mktemp -d -t tmp.XXXXXXXXXX); cp -a * $$workdir; pushd $$workdir; ./configure; popd; popd; cp $$workdir/config.h $(@D); rm -rf $$workdir;" % prefix_dir,
+)
+
+cc_library(
+    name = "farmhash",
+    srcs = [prefix_dir + "/src/farmhash.cc"],
+    hdrs = [prefix_dir + "/src/farmhash.h"] + [":configure"],
+    includes = [prefix_dir],
+    visibility = ["//visibility:public"]
+)

tensorflow/core/BUILD

@@ -199,6 +199,7 @@ cc_library(
         "lib/strings/stringprintf.h",
         "platform/env.h",
         "platform/file_system.h",
+        "platform/fingerprint.h",
         "platform/host_info.h",  # TODO(josh11b): make internal
         "platform/init_main.h",
         "platform/logging.h",

tensorflow/core/platform/default/build_config/BUILD

@@ -33,20 +33,21 @@ tf_cuda_library(
         "//tensorflow/stream_executor",
     ] + select({
         "//third_party/gpus/cuda:darwin": ["IOKit"],
-        "//conditions:default": []
+        "//conditions:default": [],
     }),
 )
 
 # OSX framework for device driver access
 cc_library(
-  name = "IOKit",
+    name = "IOKit",
-  linkopts = ["-framework IOKit"],
+    linkopts = ["-framework IOKit"],
 )
 
 cc_library(
     name = "platformlib",
     copts = tf_copts(),
     deps = [
+        "@farmhash_archive//:farmhash",
         "@jpeg_archive//:jpeg",
         "@png_archive//:png",
         "@re2//:re2",
@@ -83,12 +84,12 @@ cc_library(
     linkopts = select({
         "//third_party/gpus/cuda:darwin": [
             "-Wl,-rpath,third_party/gpus/cuda/lib",
-            "-Wl,-rpath,third_party/gpus/cuda/extras/CUPTI/lib"
+            "-Wl,-rpath,third_party/gpus/cuda/extras/CUPTI/lib",
         ],
         "//conditions:default": [
             "-Wl,-rpath,third_party/gpus/cuda/lib64",
-            "-Wl,-rpath,third_party/gpus/cuda/extras/CUPTI/lib64"
+            "-Wl,-rpath,third_party/gpus/cuda/extras/CUPTI/lib64",
-        ]
+        ],
     }),
     deps = [
         "//third_party/gpus/cuda:cudart",

tensorflow/core/platform/default/fingerprint.h

@@ -0,0 +1,29 @@
+/* Copyright 2016 Google Inc. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+#ifndef TENSORFLOW_CORE_PLATFORM_DEFAULT_FINGERPRINT_H_
+#define TENSORFLOW_CORE_PLATFORM_DEFAULT_FINGERPRINT_H_
+
+#include "farmhash-34c13ddfab0e35422f4c3979f360635a8c050260/src/farmhash.h"
+
+namespace tensorflow {
+
+inline uint64 Fingerprint64(const string& s) {
+  return ::util::Fingerprint64(s);
+}
+
+}  // namespace tensorflow
+
+#endif  // TENSORFLOW_CORE_PLATFORM_DEFAULT_FINGERPRINT_H_

tensorflow/core/platform/fingerprint.h

@@ -0,0 +1,35 @@
+/* Copyright 2016 Google Inc. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+#ifndef TENSORFLOW_CORE_PLATFORM_FINGERPRINT_H_
+#define TENSORFLOW_CORE_PLATFORM_FINGERPRINT_H_
+
+#include "tensorflow/core/platform/types.h"
+
+namespace tensorflow {
+
+// This is a portable fingerprint interface for strings that will never change.
+// However, it is not suitable for cryptography.
+uint64 Fingerprint64(const string& s);
+
+}  // namespace tensorflow
+
+#if defined(PLATFORM_GOOGLE)
+#include "tensorflow/core/platform/google/fingerprint.h"
+#else
+#include "tensorflow/core/platform/default/fingerprint.h"
+#endif
+
+#endif  // TENSORFLOW_CORE_PLATFORM_FINGERPRINT_H_

tensorflow/workspace.bzl

@@ -40,6 +40,18 @@ def tf_workspace(path_prefix = "", tf_repo_name = ""):
     commit = "96d3acab46fbb03855ca22c2ee2bb9831ac8c83c",
   )
 
+  native.new_http_archive(
+    name = "farmhash_archive",
+    url = "https://github.com/google/farmhash/archive/34c13ddfab0e35422f4c3979f360635a8c050260.zip",
+    sha256 = "e3d37a59101f38fd58fb799ed404d630f0eee18bfc2a2433910977cc8fea9c28",
+    build_file = path_prefix + "farmhash.BUILD",
+  )
+
+  native.bind(
+    name = "farmhash",
+    actual = "@farmhash//:farmhash",
+  )
+
   native.new_http_archive(
     name = "jpeg_archive",
     url = "http://www.ijg.org/files/jpegsrc.v9a.tar.gz",