NAME

malloc, free, realloc, calloc, alloca, mmap — general memory allocation operations

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <stdlib.h>

void *
malloc(size_t size);

void
free(void *ptr);

void *
realloc(void *ptr, size_t size);

void *
calloc(size_t nelem, size_t elsize);

void *
alloca(size_t size);

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

void *
mmap(void * addr, size_t len, int prot, int flags, int fd, off_t offset);

DESCRIPTION

These functions allocate and free memory for the calling process. They are described in the individual manual pages.

SEE ALSO

mmap(2), alloca(3), calloc(3), free(3), malloc(3), realloc(3)

STANDARDS

These functions, with the exception of alloca() and mmap() conform to ISO/IEC 9899:1990 (“ISO C90”).