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

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

/***
***/

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