+#elif defined(__sun__) || defined(__APPLE__)
+#include <pthread.h>
+
+static inline
+unsigned long urcu_get_thread_id(void)
+{
+ return (unsigned long) pthread_self();
+}
+#elif defined(__CYGWIN__)
+#include <pthread.h>
+
+extern unsigned long pthread_getsequence_np(pthread_t *);
+
+static inline
+unsigned long urcu_get_thread_id(void)
+{
+ pthread_t thr = pthread_self();
+ return pthread_getsequence_np(&thr);
+}
+