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author | Langston Smith <langston.smith@mapbox.com> | 2018-01-04 11:15:50 -0800 |
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committer | GitHub <noreply@github.com> | 2018-01-04 11:15:50 -0800 |
commit | 2ea955d2751ba6459f99a0695e53505c0a11702b (patch) | |
tree | f54450918b634a2eea1bd2c4ebc671bf1bb06106 /platform/default/thread_local.cpp | |
parent | f2ec6ae326bad79fea2b06a21151a2835522572a (diff) | |
parent | c62b0af24fc76b4bb2eb34100611dd3ee9ee5536 (diff) | |
download | qtlocation-mapboxgl-2ea955d2751ba6459f99a0695e53505c0a11702b.tar.gz |
Merge branch 'master' into ls-android-readme-tweaksupstream/ls-android-readme-tweaks
Diffstat (limited to 'platform/default/thread_local.cpp')
-rw-r--r-- | platform/default/thread_local.cpp | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/platform/default/thread_local.cpp b/platform/default/thread_local.cpp new file mode 100644 index 0000000000..db70773c12 --- /dev/null +++ b/platform/default/thread_local.cpp @@ -0,0 +1,66 @@ +#include <mbgl/util/thread_local.hpp> + +#include <mbgl/renderer/backend_scope.hpp> +#include <mbgl/util/logging.hpp> +#include <mbgl/util/run_loop.hpp> + +#include <stdexcept> +#include <cassert> + +#include <pthread.h> + +namespace mbgl { +namespace util { + +template <class T> +class ThreadLocal<T>::Impl { +public: + pthread_key_t key; +}; + +template <class T> +ThreadLocal<T>::ThreadLocal() : impl(std::make_unique<Impl>()) { + int ret = pthread_key_create(&impl->key, [](void *) {}); + + if (ret) { + throw std::runtime_error("Failed to init local storage key."); + } +} + +template <class T> +ThreadLocal<T>::~ThreadLocal() { + // ThreadLocal will not take ownership + // of the pointer it is managing. The pointer + // needs to be explicitly cleared before we + // destroy this object. + assert(!get()); + + if (pthread_key_delete(impl->key)) { + Log::Error(Event::General, "Failed to delete local storage key."); + assert(false); + } +} + +template <class T> +T* ThreadLocal<T>::get() { + auto* ret = reinterpret_cast<T*>(pthread_getspecific(impl->key)); + if (!ret) { + return nullptr; + } + + return ret; +} + +template <class T> +void ThreadLocal<T>::set(T* ptr) { + if (pthread_setspecific(impl->key, ptr)) { + throw std::runtime_error("Failed to set local storage."); + } +} + +template class ThreadLocal<BackendScope>; +template class ThreadLocal<Scheduler>; +template class ThreadLocal<int>; // For unit tests + +} // namespace util +} // namespace mbgl |