rt: Detach pthreads before exiting

Joinable pthreads need to be either joined or detached and we no
longer join with the scheduler threads.

2 files changed, 15 insertions, 2 deletions

diff --git a/src/rt/sync/rust_thread.cpp b/src/rt/sync/rust_thread.cpp
index 49daaa5c96d..3c54fdcf3f4 100644
--- a/src/rt/sync/rust_thread.cpp
+++ b/src/rt/sync/rust_thread.cpp
@@ -4,6 +4,9 @@
 rust_thread::rust_thread() : thread(0) {
 }
 
+rust_thread::~rust_thread() {
+}
+
 #if defined(__WIN32__)
 static DWORD WINAPI
 #elif defined(__GNUC__)
@@ -41,3 +44,12 @@ rust_thread::join() {
 #endif
    thread = 0;
 }
+
+void
+rust_thread::detach() {
+#if !defined(__WIN32__)
+    // Don't leak pthread resources.
+    // http://crosstantine.blogspot.com/2010/01/pthreadcreate-memory-leak.html
+    pthread_detach(thread);
+#endif
+}
diff --git a/src/rt/sync/rust_thread.h b/src/rt/sync/rust_thread.h
index 1c27d1b6597..2e143110c28 100644
--- a/src/rt/sync/rust_thread.h
+++ b/src/rt/sync/rust_thread.h
@@ -12,6 +12,8 @@ public:
     pthread_t thread;
 #endif
     rust_thread();
+    virtual ~rust_thread();
+
     void start();
 
     virtual void run() {
@@ -19,8 +21,7 @@ public:
     }
 
     void join();
-
-    virtual ~rust_thread() {}   // quiet the compiler
+    void detach();
 };
 
 #endif /* RUST_THREAD_H */