Abseil Common Libraries (C++) (grcp 依赖)
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54 lines
1.6 KiB
54 lines
1.6 KiB
6 years ago
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// Copyright 2019 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "absl/flags/internal/program_name.h"
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#include <string>
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#include "absl/flags/internal/path_util.h"
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#include "absl/synchronization/mutex.h"
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namespace absl {
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namespace flags_internal {
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ABSL_CONST_INIT static absl::Mutex program_name_guard(absl::kConstInit);
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ABSL_CONST_INIT static std::string* program_name
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GUARDED_BY(program_name_guard) = nullptr;
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std::string ProgramInvocationName() {
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absl::MutexLock l(&program_name_guard);
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return program_name ? *program_name : "UNKNOWN";
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}
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std::string ShortProgramInvocationName() {
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absl::MutexLock l(&program_name_guard);
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return program_name ? std::string(flags_internal::Basename(*program_name))
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: "UNKNOWN";
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}
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void SetProgramInvocationName(absl::string_view prog_name_str) {
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absl::MutexLock l(&program_name_guard);
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if (!program_name)
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program_name = new std::string(prog_name_str);
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else
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program_name->assign(prog_name_str.data(), prog_name_str.size());
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}
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} // namespace flags_internal
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} // namespace absl
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