diff options
Diffstat (limited to 'tensorflow/compiler/tf2xla/legacy_flags/backend_registration_flags.cc')
-rw-r--r-- | tensorflow/compiler/tf2xla/legacy_flags/backend_registration_flags.cc | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/tensorflow/compiler/tf2xla/legacy_flags/backend_registration_flags.cc b/tensorflow/compiler/tf2xla/legacy_flags/backend_registration_flags.cc new file mode 100644 index 0000000000..661505021f --- /dev/null +++ b/tensorflow/compiler/tf2xla/legacy_flags/backend_registration_flags.cc @@ -0,0 +1,63 @@ +/* Copyright 2018 The TensorFlow Authors. 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. +==============================================================================*/ + +// Legacy flags for the XLA bridge's backend registration modules. + +#include <mutex> // NOLINT +#include <vector> + +#include "tensorflow/compiler/tf2xla/legacy_flags/backend_registration_flags.h" +#include "tensorflow/compiler/xla/legacy_flags/parse_flags_from_env.h" +#include "tensorflow/core/platform/types.h" +#include "tensorflow/core/util/command_line_flags.h" + +namespace tensorflow { +namespace legacy_flags { + +// Pointers to the parsed value of the flags and flag descriptors, initialized +// via flags_init. +static BackendRegistrationFlags* flags; +static std::vector<Flag>* flag_list; +static std::once_flag flags_init; + +// Allocate *flags. Called via call_once(&flags_init,...). +static void AllocateFlags() { + flags = new BackendRegistrationFlags; + flags->tf_enable_prng_ops_gpu = false; + flag_list = new std::vector<Flag>({ + Flag("tf_enable_prng_ops_gpu", &flags->tf_enable_prng_ops_gpu, + "Whether to enable PRNG ops: [RandomStandardNormal | RandomUniform " + "| RandomUniformInt | TruncatedNormal] on GPU."), + }); + xla::legacy_flags::ParseFlagsFromEnv(*flag_list); +} + +// Append to *append_to flag definitions associated with the XLA bridge's +// backend registration modules. +void AppendBackendRegistrationFlags(std::vector<Flag>* append_to) { + std::call_once(flags_init, &AllocateFlags); + append_to->insert(append_to->end(), flag_list->begin(), flag_list->end()); +} + +// Return a pointer to the BackendRegistrationFlags struct; +// repeated calls return the same pointer. +// This should be called only after Flags::Parse() has returned. +BackendRegistrationFlags* GetBackendRegistrationFlags() { + std::call_once(flags_init, &AllocateFlags); + return flags; +} + +} // namespace legacy_flags +} // namespace tensorflow |