[thirdparty/systemd.git] / src / libsystemd / sd-bus / bus-kernel.h

/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once

/***
  Copyright 2013 Lennart Poettering
***/

#include "sd-bus.h"

#define MEMFD_CACHE_MAX 32

/* When we cache a memfd block for reuse, we will truncate blocks
 * longer than this in order not to keep too much data around. */
#define MEMFD_CACHE_ITEM_SIZE_MAX (128*1024)

/* This determines at which minimum size we prefer sending memfds over
 * sending vectors */
#define MEMFD_MIN_SIZE (512*1024)

struct memfd_cache {
        int fd;
        void *address;
        size_t mapped;
        size_t allocated;
};

void close_and_munmap(int fd, void *address, size_t size);
void bus_flush_memfd(sd_bus *bus);
Commit	Line	Data
53e1b683	1	/* SPDX-License-Identifier: LGPL-2.1+ */
6629161f LP	2	#pragma once
	3
	4	/***
6629161f	5	Copyright 2013 Lennart Poettering
6629161f LP	6	***/
	7
	8	#include "sd-bus.h"
	9
bc7fd8cd	10	#define MEMFD_CACHE_MAX 32
66b26c5c LP	11
	12	/* When we cache a memfd block for reuse, we will truncate blocks
	13	* longer than this in order not to keep too much data around. */
832d16a6	14	#define MEMFD_CACHE_ITEM_SIZE_MAX (128*1024)
66b26c5c LP	15
	16	/* This determines at which minimum size we prefer sending memfds over
	17	* sending vectors */
1fa13293	18	#define MEMFD_MIN_SIZE (512*1024)
bc7fd8cd LP	19
	20	struct memfd_cache {
	21	int fd;
	22	void *address;
8e959fbf LP	23	size_t mapped;
8e959fbf LP	24	size_t allocated;
bc7fd8cd LP	25	};
bc7fd8cd LP	26
a132bef0 ZJS	27	void close_and_munmap(int fd, void *address, size_t size);
a132bef0 ZJS	28	void bus_flush_memfd(sd_bus *bus);