8f2828c4b4
ccdbb5941 Export of internal Abseil changes 01f5f81f9 Export of internal Abseil changes 2c92bdc7c Export of internal Abseil changes e7ebf9803 Export of internal Abseil changes 2eba343b5 Export of internal Abseil changes a8b03d90e Export of internal Abseil changes 1d31b5c36 Export of internal Abseil changes da3a87690 Export of internal Abseil changes 8faf20461 Exclude empty directories (#697) 2069dc796 Export of internal Abseil changes 4832bf6bf Added a BUILD file in root to expose license. (#695) af8f994af Export of internal Abseil changes 33caf1097 Export of internal Abseil changes cf1a02e2d Export of internal Abseil changes git-subtree-dir: third_party/abseil_cpp git-subtree-split: ccdbb5941f992fabda7eae3ce72f55efc17c826a
116 lines
6.7 KiB
C++
116 lines
6.7 KiB
C++
// Copyright 2016 Google Inc. All Rights Reserved.
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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/time/internal/cctz/include/cctz/zone_info_source.h"
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#include "absl/base/config.h"
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namespace absl {
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ABSL_NAMESPACE_BEGIN
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namespace time_internal {
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namespace cctz {
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// Defined out-of-line to avoid emitting a weak vtable in all TUs.
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ZoneInfoSource::~ZoneInfoSource() {}
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std::string ZoneInfoSource::Version() const { return std::string(); }
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} // namespace cctz
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} // namespace time_internal
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ABSL_NAMESPACE_END
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} // namespace absl
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namespace absl {
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ABSL_NAMESPACE_BEGIN
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namespace time_internal {
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namespace cctz_extension {
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namespace {
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// A default for cctz_extension::zone_info_source_factory, which simply
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// defers to the fallback factory.
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std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource> DefaultFactory(
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const std::string& name,
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const std::function<
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std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource>(
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const std::string& name)>& fallback_factory) {
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return fallback_factory(name);
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}
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} // namespace
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// A "weak" definition for cctz_extension::zone_info_source_factory.
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// The user may override this with their own "strong" definition (see
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// zone_info_source.h).
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#if !defined(__has_attribute)
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#define __has_attribute(x) 0
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#endif
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// MinGW is GCC on Windows, so while it asserts __has_attribute(weak), the
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// Windows linker cannot handle that. Nor does the MinGW compiler know how to
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// pass "#pragma comment(linker, ...)" to the Windows linker.
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#if (__has_attribute(weak) || defined(__GNUC__)) && !defined(__MINGW32__)
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ZoneInfoSourceFactory zone_info_source_factory __attribute__((weak)) =
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DefaultFactory;
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#elif defined(_MSC_VER) && !defined(__MINGW32__) && !defined(_LIBCPP_VERSION)
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extern ZoneInfoSourceFactory zone_info_source_factory;
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extern ZoneInfoSourceFactory default_factory;
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ZoneInfoSourceFactory default_factory = DefaultFactory;
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#if defined(_M_IX86)
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#pragma comment( \
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linker, \
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"/alternatename:?zone_info_source_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
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"@ABV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
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"@@ZA=?default_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
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"@ABV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
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"@@ZA")
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#elif defined(_M_IA_64) || defined(_M_AMD64) || defined(_M_ARM) || \
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defined(_M_ARM64)
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#pragma comment( \
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linker, \
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"/alternatename:?zone_info_source_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
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"@AEBV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
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"@@ZEA=?default_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
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"@AEBV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
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"@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
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"@@ZEA")
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#else
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#error Unsupported MSVC platform
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#endif // _M_<PLATFORM>
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#else
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// Make it a "strong" definition if we have no other choice.
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ZoneInfoSourceFactory zone_info_source_factory = DefaultFactory;
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#endif
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} // namespace cctz_extension
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} // namespace time_internal
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ABSL_NAMESPACE_END
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} // namespace absl
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