cleanup darshan runtime shutdown code

darshan-runtime/lib/darshan-core.c

@@ -623,9 +623,15 @@ static void darshan_core_shutdown()
 /* free darshan core data structures to shutdown */
 static void darshan_core_cleanup(struct darshan_core_runtime* core)
 {
+    struct darshan_core_record_ref *tmp, *ref;
     int i;
 
-    /* TODO: destroy record hash */
+    HASH_ITER(hlink, core->rec_hash, ref, tmp)
+    {
+        HASH_DELETE(hlink, core->rec_hash, ref);
+        free(ref->rec.name);
+        free(ref);
+    }
 
     for(i = 0; i < DARSHAN_MAX_MODS; i++)
     {

darshan-runtime/lib/darshan-posix.c

@@ -604,9 +604,15 @@ static void posix_get_output_data(
 
 static void posix_shutdown()
 {
-    assert(posix_runtime);
+    struct posix_runtime_file_ref *ref, *tmp;
+
+    HASH_ITER(hlink, posix_runtime->fd_hash, ref, tmp)
+    {
+        HASH_DELETE(hlink, posix_runtime->fd_hash, ref);
+        free(ref);
+    }
 
-    /* TODO destroy hash tables ?? */
+    HASH_CLEAR(hlink, posix_runtime->file_hash); /* these entries are freed all at once below */
 
     free(posix_runtime->file_runtime_array);
     free(posix_runtime->file_record_array);

darshan-util/darshan-logutils.c

@@ -475,6 +475,8 @@ int darshan_log_getmod(darshan_fd fd, darshan_module_id mod_id,
     *mod_buf = tmp_buf;
     *mod_buf_sz = tmp_buf_sz;
 
+    /* TODO: bswaps */
+
     return(0);
 }