Files
systemd/src/basic/prioq.h
Daan De Meyer f102bc3e5f tree-wide: Introduce sd-forward.h and shared-forward.h headers
Let's not leak details from src/shared and src/libsystemd into
src/basic, even though you can't actually do anything useful with
just forward declarations from src/shared.

The sd-forward.h header is put in src/libsystemd/sd-common as we
don't have a directory for shared internal headers for libsystemd
yet.

Let's also rename forward.h to basic-forward.h to keep things
self-explanatory.
2025-10-16 17:00:29 +02:00

37 lines
1.3 KiB
C

/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include "basic-forward.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);
#define prioq_ensure_put(q, compare_func, data, idx) \
({ \
int (*_func_)(const typeof((data)[0])*, const typeof((data)[0])*) = compare_func; \
_prioq_ensure_put(q, (compare_func_t) _func_, data, 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_;