diff options
Diffstat (limited to 'absl/base/internal')
| -rw-r--r-- | absl/base/internal/thread_identity.cc | 7 | ||||
| -rw-r--r-- | absl/base/internal/thread_identity.h | 4 |
2 files changed, 8 insertions, 3 deletions
diff --git a/absl/base/internal/thread_identity.cc b/absl/base/internal/thread_identity.cc index d63a04ae..6ea010ed 100644 --- a/absl/base/internal/thread_identity.cc +++ b/absl/base/internal/thread_identity.cc @@ -23,6 +23,7 @@ #include <cassert> #include <memory> +#include "absl/base/attributes.h" #include "absl/base/call_once.h" #include "absl/base/internal/raw_logging.h" #include "absl/base/internal/spinlock.h" @@ -53,9 +54,11 @@ void AllocateThreadIdentityKey(ThreadIdentityReclaimerFunction reclaimer) { // exist within a process (via dlopen() or similar), references to // thread_identity_ptr from each instance of the code will refer to // *different* instances of this ptr. -#ifdef __GNUC__ +// Apple platforms have the visibility attribute, but issue a compile warning +// that protected visibility is unsupported. +#if ABSL_HAVE_ATTRIBUTE(visibility) && !defined(__APPLE__) __attribute__((visibility("protected"))) -#endif // __GNUC__ +#endif // ABSL_HAVE_ATTRIBUTE(visibility) && !defined(__APPLE__) #if ABSL_PER_THREAD_TLS // Prefer __thread to thread_local as benchmarks indicate it is a bit faster. ABSL_PER_THREAD_TLS_KEYWORD ThreadIdentity* thread_identity_ptr = nullptr; diff --git a/absl/base/internal/thread_identity.h b/absl/base/internal/thread_identity.h index c61d1feb..d2a65fd8 100644 --- a/absl/base/internal/thread_identity.h +++ b/absl/base/internal/thread_identity.h @@ -211,7 +211,9 @@ void ClearCurrentThreadIdentity(); #define ABSL_THREAD_IDENTITY_MODE ABSL_FORCE_THREAD_IDENTITY_MODE #elif defined(_WIN32) && !defined(__MINGW32__) #define ABSL_THREAD_IDENTITY_MODE ABSL_THREAD_IDENTITY_MODE_USE_CPP11 -#elif ABSL_PER_THREAD_TLS && defined(__GOOGLE_GRTE_VERSION__) && \ +#elif defined(__APPLE__) && defined(ABSL_HAVE_THREAD_LOCAL) +#define ABSL_THREAD_IDENTITY_MODE ABSL_THREAD_IDENTITY_MODE_USE_CPP11 +#elif ABSL_PER_THREAD_TLS && defined(__GOOGLE_GRTE_VERSION__) && \ (__GOOGLE_GRTE_VERSION__ >= 20140228L) // Support for async-safe TLS was specifically added in GRTEv4. It's not // present in the upstream eglibc. |