diff options
Diffstat (limited to 'third_party/abseil-cpp/absl/time/internal/cctz/src/zone_info_source.cc')
| -rw-r--r-- | third_party/abseil-cpp/absl/time/internal/cctz/src/zone_info_source.cc | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/third_party/abseil-cpp/absl/time/internal/cctz/src/zone_info_source.cc b/third_party/abseil-cpp/absl/time/internal/cctz/src/zone_info_source.cc new file mode 100644 index 0000000000..98ea161267 --- /dev/null +++ b/third_party/abseil-cpp/absl/time/internal/cctz/src/zone_info_source.cc @@ -0,0 +1,115 @@ +// 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 +// +// 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/time/internal/cctz/include/cctz/zone_info_source.h" + +#include "absl/base/config.h" + +namespace absl { +ABSL_NAMESPACE_BEGIN +namespace time_internal { +namespace cctz { + +// Defined out-of-line to avoid emitting a weak vtable in all TUs. +ZoneInfoSource::~ZoneInfoSource() {} +std::string ZoneInfoSource::Version() const { return std::string(); } + +} // namespace cctz +} // namespace time_internal +ABSL_NAMESPACE_END +} // namespace absl + +namespace absl { +ABSL_NAMESPACE_BEGIN +namespace time_internal { +namespace cctz_extension { + +namespace { + +// A default for cctz_extension::zone_info_source_factory, which simply +// defers to the fallback factory. +std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource> DefaultFactory( + const std::string& name, + const std::function< + std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource>( + const std::string& name)>& fallback_factory) { + return fallback_factory(name); +} + +} // namespace + +// A "weak" definition for cctz_extension::zone_info_source_factory. +// The user may override this with their own "strong" definition (see +// zone_info_source.h). +#if !defined(__has_attribute) +#define __has_attribute(x) 0 +#endif +// MinGW is GCC on Windows, so while it asserts __has_attribute(weak), the +// Windows linker cannot handle that. Nor does the MinGW compiler know how to +// pass "#pragma comment(linker, ...)" to the Windows linker. +#if (__has_attribute(weak) || defined(__GNUC__)) && !defined(__MINGW32__) +ZoneInfoSourceFactory zone_info_source_factory __attribute__((weak)) = + DefaultFactory; +#elif defined(_MSC_VER) && !defined(__MINGW32__) && !defined(_LIBCPP_VERSION) +extern ZoneInfoSourceFactory zone_info_source_factory; +extern ZoneInfoSourceFactory default_factory; +ZoneInfoSourceFactory default_factory = DefaultFactory; +#if defined(_M_IX86) +#pragma comment( \ + linker, \ + "/alternatename:?zone_info_source_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \ + "@ABV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \ + "@@ZA=?default_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \ + "@ABV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \ + "@@ZA") +#elif defined(_M_IA_64) || defined(_M_AMD64) || defined(_M_ARM64) +#pragma comment( \ + linker, \ + "/alternatename:?zone_info_source_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \ + "@AEBV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \ + "@@ZEA=?default_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \ + "@AEBV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \ + "@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \ + "@@ZEA") +#else +#error Unsupported MSVC platform +#endif // _M_<PLATFORM> +#else +// Make it a "strong" definition if we have no other choice. +ZoneInfoSourceFactory zone_info_source_factory = DefaultFactory; +#endif + +} // namespace cctz_extension +} // namespace time_internal +ABSL_NAMESPACE_END +} // namespace absl |