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| author | Abseil Team <absl-team@google.com> | 2018-09-12T18·03-0700 |
|---|---|---|
| committer | Gennadiy Civil <misterg@google.com> | 2018-09-13T17·24-0400 |
| commit | 8ff1374008259719b54a8cb128ef951c02da164c (patch) | |
| tree | d6768eeb981f8e3a14668c329336faee20291346 /absl/base/internal/thread_identity.cc | |
| parent | 02451914b9ad5320f81f56a89f3eef1f8683227c (diff) | |
Export of internal Abseil changes.
-- 821196cfb2a3b943ffdc4c9e75daec92d7ffb28b by Abseil Team <absl-team@google.com>: Performance improvements PiperOrigin-RevId: 212668992 -- 704858e2e767016bad27d53eec01d9d48e546b23 by Abseil Team <absl-team@google.com>: Low-level Portability enchancements for Abseil Mutex on WebAssembly. Emscripten Pthreads do not use signals, so remove use of pthread_sigmask or other async-signal-safe related handling code. PiperOrigin-RevId: 212527958 -- be3e38cb4d493b755132d20c8c2d1a51e45d5449 by Jon Cohen <cohenjon@google.com>: Internal change. PiperOrigin-RevId: 212523797 GitOrigin-RevId: 821196cfb2a3b943ffdc4c9e75daec92d7ffb28b Change-Id: I5694e23e4e09364a15dd6fc4e2e3f15e38835687
Diffstat (limited to 'absl/base/internal/thread_identity.cc')
| -rw-r--r-- | absl/base/internal/thread_identity.cc | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/absl/base/internal/thread_identity.cc b/absl/base/internal/thread_identity.cc index 678e8568d742..cff9c1b4f4dc 100644 --- a/absl/base/internal/thread_identity.cc +++ b/absl/base/internal/thread_identity.cc @@ -68,6 +68,14 @@ void SetCurrentThreadIdentity( // NOTE: Not async-safe. But can be open-coded. absl::call_once(init_thread_identity_key_once, AllocateThreadIdentityKey, reclaimer); + +#ifdef __EMSCRIPTEN__ + // Emscripten PThread implementation does not support signals. + // See https://kripken.github.io/emscripten-site/docs/porting/pthreads.html + // for more information. + pthread_setspecific(thread_identity_pthread_key, + reinterpret_cast<void*>(identity)); +#else // We must mask signals around the call to setspecific as with current glibc, // a concurrent getspecific (needed for GetCurrentThreadIdentityIfPresent()) // may zero our value. @@ -81,6 +89,8 @@ void SetCurrentThreadIdentity( pthread_setspecific(thread_identity_pthread_key, reinterpret_cast<void*>(identity)); pthread_sigmask(SIG_SETMASK, &curr_signals, nullptr); +#endif // !__EMSCRIPTEN__ + #elif ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS // NOTE: Not async-safe. But can be open-coded. absl::call_once(init_thread_identity_key_once, AllocateThreadIdentityKey, |