2 files changed, 14 insertions, 0 deletions
diff --git a/src/basic/process-util.c b/src/basic/process-util.c
index ae3f6109ad..f2cea01979 100644
--- a/src/basic/process-util.c
+++ b/src/basic/process-util.c
@@ -731,6 +731,18 @@ void valgrind_summary_hack(void) {
 #endif
 }
 
+int pid_compare_func(const void *a, const void *b) {
+        const pid_t *p = a, *q = b;
+
+        /* Suitable for usage in qsort() */
+
+        if (*p < *q)
+                return -1;
+        if (*p > *q)
+                return 1;
+        return 0;
+}
+
 static const char *const ioprio_class_table[] = {
         [IOPRIO_CLASS_NONE] = "none",
         [IOPRIO_CLASS_RT] = "realtime",
diff --git a/src/basic/process-util.h b/src/basic/process-util.h
index f5d193e762..ffd4bcb0ff 100644
--- a/src/basic/process-util.h
+++ b/src/basic/process-util.h
@@ -101,3 +101,5 @@ int sched_policy_from_string(const char *s);
 #define PID_TO_PTR(p) ((void*) ((uintptr_t) p))
 
 void valgrind_summary_hack(void);
+
+int pid_compare_func(const void *a, const void *b);