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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
commit55944e5e40b1be2afc4855d8d2baf4b73d1876b5 (patch)
tree33f869f55a1b149e9b7c2b7e201867ca5dd52992 /src/basic/prioq.h
parentInitial commit. (diff)
downloadsystemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.tar.xz
systemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.zip
Adding upstream version 255.4.upstream/255.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/basic/prioq.h')
-rw-r--r--src/basic/prioq.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/src/basic/prioq.h b/src/basic/prioq.h
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+++ b/src/basic/prioq.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <stdbool.h>
+
+#include "hashmap.h"
+#include "macro.h"
+
+typedef struct Prioq Prioq;
+
+#define PRIOQ_IDX_NULL (UINT_MAX)
+
+Prioq *prioq_new(compare_func_t compare);
+Prioq *prioq_free(Prioq *q);
+DEFINE_TRIVIAL_CLEANUP_FUNC(Prioq*, prioq_free);
+int prioq_ensure_allocated(Prioq **q, compare_func_t compare_func);
+
+int prioq_put(Prioq *q, void *data, unsigned *idx);
+int prioq_ensure_put(Prioq **q, compare_func_t compare_func, void *data, unsigned *idx);
+int prioq_remove(Prioq *q, void *data, unsigned *idx);
+void prioq_reshuffle(Prioq *q, void *data, unsigned *idx);
+
+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_;