sc/memory-map/mmap_example.c

#include "sc_mmap.h"

#include <assert.h>
#include <stdio.h>

int main(void)
{
	int rc;
	struct sc_mmap mmap;

	rc = sc_mmap_init(&mmap, "x.txt", O_RDWR | O_CREAT | O_TRUNC,
			  PROT_READ | PROT_WRITE, MAP_SHARED, 0, 15000);
	assert(rc == 0);

	void *ptr = mmap.ptr;
	size_t mapped_len = mmap.len;

	printf("mapped len : %zu \n", mapped_len);

	*(char *) ptr = 't';

	sc_mmap_msync(&mmap, 0, 4096);
	sc_mmap_term(&mmap);

	return 0;
}