fix public interface

To make some kind of Ractor related extensions, some functions
should be exposed.

* include/ruby/thread_native.h
  * rb_native_mutex_*
  * rb_native_cond_*
* include/ruby/ractor.h
  * RB_OBJ_SHAREABLE_P(obj)
  * rb_ractor_shareable_p(obj)
  * rb_ractor_std*()
  * rb_cRactor

and rm ractor_pub.h
and rename srcdir/ractor.h to srcdir/ractor_core.h
    (to avoid conflict with include/ruby/ractor.h)

2 files changed, 62 insertions, 0 deletions

diff --git a/include/ruby/ractor.h b/include/ruby/ractor.h
new file mode 100644
index 0000000000..6908c0a453
--- /dev/null
+++ b/include/ruby/ractor.h
@@ -0,0 +1,45 @@
+#ifndef RUBY_RACTOR_H
+#define RUBY_RACTOR_H 1
+
+/**
+ * @file
+ * @author Koichi Sasada
+ * @date Tue Nov 17 16:39:15 2020
+ * @copyright Copyright (C) 2020 Yukihiro Matsumoto
+ * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
+ *             Permission  is hereby  granted,  to  either redistribute  and/or
+ *             modify this file, provided that  the conditions mentioned in the
+ *             file COPYING are met.  Consult the file for details.
+ */
+
+RUBY_SYMBOL_EXPORT_BEGIN
+RUBY_EXTERN VALUE rb_cRactor;
+
+VALUE rb_ractor_stdin(void);
+VALUE rb_ractor_stdout(void);
+VALUE rb_ractor_stderr(void);
+void rb_ractor_stdin_set(VALUE);
+void rb_ractor_stdout_set(VALUE);
+void rb_ractor_stderr_set(VALUE);
+
+bool rb_ractor_shareable_p_continue(VALUE obj); // do not call it directly.
+
+RUBY_SYMBOL_EXPORT_END
+
+#define RB_OBJ_SHAREABLE_P(obj) FL_TEST_RAW((obj), RUBY_FL_SHAREABLE)
+
+static inline bool
+rb_ractor_shareable_p(VALUE obj)
+{
+    if (SPECIAL_CONST_P(obj)) {
+        return true;
+    }
+    else if (RB_OBJ_SHAREABLE_P(obj)) {
+        return true;
+    }
+    else {
+        return rb_ractor_shareable_p_continue(obj);
+    }
+}
+
+#endif /* RUBY_RACTOR_H */
diff --git a/include/ruby/thread_native.h b/include/ruby/thread_native.h
index 0285c8ff40..7e08c2e97f 100644
--- a/include/ruby/thread_native.h
+++ b/include/ruby/thread_native.h
@@ -31,10 +31,14 @@ typedef union rb_thread_lock_union {
     CRITICAL_SECTION crit;
 } rb_nativethread_lock_t;
 
+typedef struct rb_thread_cond_struct rb_nativethread_cond_t;
+
 #elif defined(HAVE_PTHREAD_H)
+
 #include <pthread.h>
 typedef pthread_t rb_nativethread_id_t;
 typedef pthread_mutex_t rb_nativethread_lock_t;
+typedef pthread_cond_t rb_nativethread_cond_t;
 
 #else
 #error "unsupported thread type"
@@ -50,6 +54,19 @@ void rb_nativethread_lock_destroy(rb_nativethread_lock_t *lock);
 void rb_nativethread_lock_lock(rb_nativethread_lock_t *lock);
 void rb_nativethread_lock_unlock(rb_nativethread_lock_t *lock);
 
+void rb_native_mutex_lock(rb_nativethread_lock_t *lock);
+int  rb_native_mutex_trylock(rb_nativethread_lock_t *lock);
+void rb_native_mutex_unlock(rb_nativethread_lock_t *lock);
+void rb_native_mutex_initialize(rb_nativethread_lock_t *lock);
+void rb_native_mutex_destroy(rb_nativethread_lock_t *lock);
+
+void rb_native_cond_signal(rb_nativethread_cond_t *cond);
+void rb_native_cond_broadcast(rb_nativethread_cond_t *cond);
+void rb_native_cond_wait(rb_nativethread_cond_t *cond, rb_nativethread_lock_t *mutex);
+void rb_native_cond_timedwait(rb_nativethread_cond_t *cond, rb_nativethread_lock_t *mutex, unsigned long msec);
+void rb_native_cond_initialize(rb_nativethread_cond_t *cond);
+void rb_native_cond_destroy(rb_nativethread_cond_t *cond);
+
 RUBY_SYMBOL_EXPORT_END
 
 #endif