From 767b104fb7f8c8a9cbea5f0c97e39257567d3f75 Mon Sep 17 00:00:00 2001
From: Ken Gaillot <kgaillot@redhat.com>
Date: Jun 10 2020 17:56:11 +0000
Subject: Refactor: libcrmcommon: convenience functions for list length comparisons


... for efficiency and readability

---

diff --git a/include/crm/common/internal.h b/include/crm/common/internal.h
index da2c7d7..484c836 100644
--- a/include/crm/common/internal.h
+++ b/include/crm/common/internal.h
@@ -126,6 +126,20 @@ crm_getpid_s()
     return crm_strdup_printf("%lu", (unsigned long) getpid());
 }
 
+// More efficient than g_list_length(list) == 1
+static inline bool
+pcmk__list_of_1(GList *list)
+{
+    return list && (list->next == NULL);
+}
+
+// More efficient than g_list_length(list) > 1
+static inline bool
+pcmk__list_of_multiple(GList *list)
+{
+    return list && (list->next != NULL);
+}
+
 /* convenience functions for failure-related node attributes */
 
 #define CRM_FAIL_COUNT_PREFIX   "fail-count"