12bc53e031
-- c99f979ad34f155fbeeea69b88bdc7458d89a21c by Derek Mauro <dmauro@google.com>: Remove a floating point division by zero test. This isn't testing behavior related to the library, and MSVC warns about it in opt mode. PiperOrigin-RevId: 285220804 -- 68b015491f0dbf1ab547994673281abd1f34cd4b by Gennadiy Rozental <rogeeff@google.com>: This CL introduces following changes to the class FlagImpl: * We eliminate the CommandLineFlagLocks struct. Instead callback guard and callback function are combined into a single CallbackData struct, while primary data lock is stored separately. * CallbackData member of class FlagImpl is initially set to be nullptr and is only allocated and initialized when a flag's callback is being set. For most flags we do not pay for the extra space and extra absl::Mutex now. * Primary data guard is stored in data_guard_ data member. This is a properly aligned character buffer of necessary size. During initialization of the flag we construct absl::Mutex in this space using placement new call. * We now avoid extra value copy after successful attempt to parse value out of string. Instead we swap flag's current value with tentative value we just produced. PiperOrigin-RevId: 285132636 -- ed45d118fb818969eb13094cf7827c885dfc562c by Tom Manshreck <shreck@google.com>: Change null-term* (and nul-term*) to NUL-term* in comments PiperOrigin-RevId: 285036610 -- 729619017944db895ce8d6d29c1995aa2e5628a5 by Derek Mauro <dmauro@google.com>: Use the Posix implementation of thread identity on MinGW. Some versions of MinGW suffer from thread_local bugs. PiperOrigin-RevId: 285022920 -- 39a25493503c76885bc3254c28f66a251c5b5bb0 by Greg Falcon <gfalcon@google.com>: Implementation detail change. Add further ABSL_NAMESPACE_BEGIN and _END annotation macros to files in Abseil. PiperOrigin-RevId: 285012012 GitOrigin-RevId: c99f979ad34f155fbeeea69b88bdc7458d89a21c Change-Id: I4c85d3704e45d11a9ac50d562f39640a6adbedc1
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
//
|
|
// Copyright 2019 The Abseil Authors.
|
|
//
|
|
// 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
|
|
//
|
|
// https://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.
|
|
|
|
#include "absl/flags/internal/program_name.h"
|
|
|
|
#include <string>
|
|
|
|
#include "absl/flags/internal/path_util.h"
|
|
#include "absl/synchronization/mutex.h"
|
|
|
|
namespace absl {
|
|
ABSL_NAMESPACE_BEGIN
|
|
namespace flags_internal {
|
|
|
|
ABSL_CONST_INIT static absl::Mutex program_name_guard(absl::kConstInit);
|
|
ABSL_CONST_INIT static std::string* program_name
|
|
ABSL_GUARDED_BY(program_name_guard) = nullptr;
|
|
|
|
std::string ProgramInvocationName() {
|
|
absl::MutexLock l(&program_name_guard);
|
|
|
|
return program_name ? *program_name : "UNKNOWN";
|
|
}
|
|
|
|
std::string ShortProgramInvocationName() {
|
|
absl::MutexLock l(&program_name_guard);
|
|
|
|
return program_name ? std::string(flags_internal::Basename(*program_name))
|
|
: "UNKNOWN";
|
|
}
|
|
|
|
void SetProgramInvocationName(absl::string_view prog_name_str) {
|
|
absl::MutexLock l(&program_name_guard);
|
|
|
|
if (!program_name)
|
|
program_name = new std::string(prog_name_str);
|
|
else
|
|
program_name->assign(prog_name_str.data(), prog_name_str.size());
|
|
}
|
|
|
|
} // namespace flags_internal
|
|
ABSL_NAMESPACE_END
|
|
} // namespace absl
|