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author | Pavel Samolysov <samolisov@gmail.com> | 2020-04-14T21·25+0300 |
---|---|---|
committer | GitHub <noreply@github.com> | 2020-04-14T21·25-0400 |
commit | 2946ac0dea49c894215a998aebb19d2f1d942909 (patch) | |
tree | c0fbefaa60b39e767a1fa634334c05f248e25f32 | |
parent | 567bee2f7393fca6ca737ecf061bd9f97302e346 (diff) |
Use base_internal::AtomicHook instead of std::atomic (#661)
* Use base_internal::AtomicHook instead of std::atomic std::atomic has a broken implementation on the Windows platform and it is not conform to the ABSL_CONST_INIT macro when clang-cl is used as a compiler: the macro is expanded to the [[clang::require_constant_initialization]] attribute and the attribute cannot be applied to the broken std::atomic. Therefore, std::atomic has been replaced with absl::base_internal::AtomicHook to fix the compilation error (thank Derek Mauro for the suggestion). Issue: #659 Signed-off-by: Pavel Samolysov <samolisov@gmail.com> * Update build files for pull request Co-authored-by: Derek Mauro <dmauro@google.com>
-rw-r--r-- | absl/status/BUILD.bazel | 1 | ||||
-rw-r--r-- | absl/status/CMakeLists.txt | 1 | ||||
-rw-r--r-- | absl/status/status_payload_printer.cc | 15 |
3 files changed, 7 insertions, 10 deletions
diff --git a/absl/status/BUILD.bazel b/absl/status/BUILD.bazel index 2b83077def79..d164252da9e2 100644 --- a/absl/status/BUILD.bazel +++ b/absl/status/BUILD.bazel @@ -40,6 +40,7 @@ cc_library( ], copts = ABSL_DEFAULT_COPTS, deps = [ + "//absl/base:atomic_hook", "//absl/base:config", "//absl/base:core_headers", "//absl/base:raw_logging_internal", diff --git a/absl/status/CMakeLists.txt b/absl/status/CMakeLists.txt index f05cee5e954d..c041d69517ef 100644 --- a/absl/status/CMakeLists.txt +++ b/absl/status/CMakeLists.txt @@ -25,6 +25,7 @@ absl_cc_library( COPTS ${ABSL_DEFAULT_COPTS} DEPS + absl::atomic_hook absl::config absl::core_headers absl::raw_logging_internal diff --git a/absl/status/status_payload_printer.cc b/absl/status/status_payload_printer.cc index ad96d76acf49..a47aea11c2d3 100644 --- a/absl/status/status_payload_printer.cc +++ b/absl/status/status_payload_printer.cc @@ -16,26 +16,21 @@ #include <atomic> #include "absl/base/attributes.h" +#include "absl/base/internal/atomic_hook.h" namespace absl { ABSL_NAMESPACE_BEGIN namespace status_internal { -namespace { -// Tried constant initialized global variable but it doesn't work with Lexan -// (MSVC's `std::atomic` has trouble constant initializing). -std::atomic<StatusPayloadPrinter>& GetStatusPayloadPrinterStorage() { - ABSL_CONST_INIT static std::atomic<StatusPayloadPrinter> instance{nullptr}; - return instance; -} -} // namespace +ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES +static absl::base_internal::AtomicHook<StatusPayloadPrinter> storage; void SetStatusPayloadPrinter(StatusPayloadPrinter printer) { - GetStatusPayloadPrinterStorage().store(printer, std::memory_order_relaxed); + storage.Store(printer); } StatusPayloadPrinter GetStatusPayloadPrinter() { - return GetStatusPayloadPrinterStorage().load(std::memory_order_relaxed); + return storage.Load(); } } // namespace status_internal |