coda_mmap_anon.h File Reference

#include <unistd.h>
#include <sys/mman.h>

Include dependency graph for coda_mmap_anon.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros
#define	MAP_ANON   0
#define	mmap_anon(raddrptr, addrptr, len, prot)

Macro Definition Documentation

MAP_ANON

#define MAP_ANON   0

mmap_anon

#define mmap_anon	(		raddrptr,
			addrptr,
			len,
			prot
	)

Value:

    do {                                                           \
        int fd = -1, flags = MAP_ANON | MAP_PRIVATE;               \
        if (addrptr)                                               \
            flags |= MAP_FIXED;                                    \
        if (!MAP_ANON)                                             \
            fd = open("/dev/zero", O_RDWR);                        \
        raddrptr = mmap((char *)addrptr, len, prot, flags, fd, 0); \
        if (fd != -1)                                              \
            close(fd);                                             \
    } while (0);