core: add basic mutex and per-thread data support

core/sys/darwin/thread.c

@@ -0,0 +1,61 @@
+#include <assert.h>
+#include <blue/core/error.h>
+#include <blue/core/thread.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct b_thread {
+	pthread_t thr_p;
+	b_result thr_result;
+};
+
+static b_once thread_tls_init_once = B_ONCE_INIT;
+static pthread_key_t thread_tls_key = {0};
+
+static void thread_dtor(void *p)
+{
+	struct b_thread *thread = p;
+}
+
+static void thread_tls_init()
+{
+	pthread_key_create(&thread_tls_key, thread_dtor);
+}
+
+struct b_thread *b_thread_self(void)
+{
+	if (b_init_once(&thread_tls_init_once)) {
+		thread_tls_init();
+	}
+
+	struct b_thread *thread = pthread_getspecific(thread_tls_key);
+	if (thread) {
+		return thread;
+	}
+
+	thread = malloc(sizeof *thread);
+	assert(thread);
+
+	memset(thread, 0x0, sizeof *thread);
+
+	thread->thr_p = pthread_self();
+
+	pthread_setspecific(thread_tls_key, thread);
+
+	return thread;
+}
+
+bool b_mutex_lock(b_mutex *mut)
+{
+	return pthread_mutex_lock(mut) == 0;
+}
+
+bool b_mutex_trylock(b_mutex *mut)
+{
+	return pthread_mutex_trylock(mut) == 0;
+}
+
+bool b_mutex_unlock(b_mutex *mut)
+{
+	return pthread_mutex_unlock(mut) == 0;
+}