thread_pthread.h (native_thread_data): split condvars on some platforms

Maybe some platforms have strange condition variable implementations
which have a "memory" of which mutexes they're associated with.

In any case, it makes documentation easier even on GNU/Linux and
FreeBSD.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64124 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 13 insertions, 1 deletions

diff --git a/thread_pthread.h b/thread_pthread.h
index e3f09800a3..60e0fe0ea3 100644
--- a/thread_pthread.h
+++ b/thread_pthread.h
@@ -22,7 +22,19 @@ typedef pthread_cond_t rb_nativethread_cond_t;
 
 typedef struct native_thread_data_struct {
     struct list_node ubf_list;
-    rb_nativethread_cond_t sleep_cond;
+#if defined(__GLIBC__) || defined(__FreeBSD__)
+    union
+#else
+    /*
+     * assume the platform condvars are badly implemented and have a
+     * "memory" of which mutex they're associated with
+     */
+    struct
+#endif
+    {
+        rb_nativethread_cond_t intr; /* th->interrupt_lock */
+        rb_nativethread_cond_t gvlq; /* vm->gvl.lock */
+    } cond;
 } native_thread_data_t;
 
 #undef except