47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
#include <mbgl/util/thread_local.hpp>
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#include <mbgl/util/logging.hpp>
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#include <cassert>
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#include <cstdlib>
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#include <pthread.h>
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namespace mbgl {
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namespace util {
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namespace impl {
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ThreadLocalBase::ThreadLocalBase() {
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static_assert(sizeof(storage) >= sizeof(pthread_key_t), "storage is too small");
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static_assert(alignof(decltype(storage)) % alignof(pthread_key_t) == 0, "storage is incorrectly aligned");
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if (pthread_key_create(&reinterpret_cast<pthread_key_t&>(storage), nullptr) != 0) {
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Log::Error(Event::General, "Failed to initialize thread-specific storage key");
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abort();
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}
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}
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ThreadLocalBase::~ThreadLocalBase() {
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// ThreadLocal will not take ownership of the pointer it is managing. The
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// pointer needs to be explicitly cleared before we destroy this object.
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assert(!get());
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if (pthread_key_delete(reinterpret_cast<pthread_key_t&>(storage)) != 0) {
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Log::Error(Event::General, "Failed to delete thread-specific storage key");
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abort();
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}
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}
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void* ThreadLocalBase::get() const {
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return pthread_getspecific(reinterpret_cast<const pthread_key_t&>(storage));
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}
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void ThreadLocalBase::set(void* ptr) {
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if (pthread_setspecific(reinterpret_cast<pthread_key_t&>(storage), ptr) != 0) {
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Log::Error(Event::General, "Failed to set thread-specific storage");
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abort();
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}
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}
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} // namespace impl
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} // namespace util
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} // namespace mbgl
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