1 files changed, 48 insertions, 0 deletions
diff --git a/sync.c b/sync.c
new file mode 100644
index 0000000..5321da0
--- /dev/null
+++ b/sync.c
@@ -0,0 +1,48 @@
+/*
+ * sync.c
+ *
+ * Description:
+ * This translation unit implements functions related to thread
+ * synchronisation.
+ */
+
+#include "pthread.h"
+
+int
+pthread_join(pthread_t thread, void ** valueptr)
+{
+  LPDWORD exitcode;
+  pthread_t us = pthread_self();
+
+  /* First check if we are trying to join to ourselves. */
+  if (pthread_equal(thread, us) == 0)
+    {
+      return EDEADLK;
+    }
+
+  /* Wait on the kernel thread object. */
+  switch (WaitForSingleObject(thread, INFINITE))
+    {
+    case WAIT_FAILED:
+      /* The thread does not exist. */
+      return ESRCH;
+    case WAIT_OBJECT_0:
+      /* The thread has finished. */
+      break;
+    default:
+      /* This should never happen. */
+      break;
+    }
+ 
+  /* We don't get the exit code as a result of the last operation,
+     so we do it now. */
+
+  if (GetExitCodeThread(thread, exitcode) != TRUE)
+    {
+      return ESRCH;
+    }
+
+  /* FIXME: this is wrong. */
+  return &exitcode;
+}
+