tree-wide: use UINT64_MAX or friends

[thirdparty/systemd.git] / src / basic / prioq.h

diff --git a/src/basic/prioq.h b/src/basic/prioq.h
index bba5c7caa49ca6d047b799f2c8c441e759757361..7c7664761135a761e194458fe931433a63991d81 100644 (file)
--- a/src/basic/prioq.h
+++ b/src/basic/prioq.h
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
 #include <stdbool.h>
@@ -8,7 +8,7 @@
 
 typedef struct Prioq Prioq;
 
-#define PRIOQ_IDX_NULL ((unsigned) -1)
+#define PRIOQ_IDX_NULL (UINT_MAX)
 
 Prioq *prioq_new(compare_func_t compare);
 Prioq *prioq_free(Prioq *q);
@@ -19,8 +19,14 @@ int prioq_put(Prioq *q, void *data, unsigned *idx);
 int prioq_remove(Prioq *q, void *data, unsigned *idx);
 int prioq_reshuffle(Prioq *q, void *data, unsigned *idx);
 
-void *prioq_peek(Prioq *q) _pure_;
+void *prioq_peek_by_index(Prioq *q, unsigned idx) _pure_;
+static inline void *prioq_peek(Prioq *q) {
+        return prioq_peek_by_index(q, 0);
+}
 void *prioq_pop(Prioq *q);
 
+#define PRIOQ_FOREACH_ITEM(q, p)                                \
+        for (unsigned _i = 0; (p = prioq_peek_by_index(q, _i)); _i++)
+
 unsigned prioq_size(Prioq *q) _pure_;
 bool prioq_isempty(Prioq *q) _pure_;