memory(3) [freebsd man page]

MEMORY(3)						   BSD Library Functions Manual 						 MEMORY(3)

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'').

BSD
								   June 4, 1993 							       BSD

MEMORY(3)						   BSD Library Functions Manual 						 MEMORY(3)

NAME

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

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <stdlib.h>

     void *
     alloca(size_t size);

     void *
     calloc(size_t nelem, size_t elsize);

     void
     free(void *ptr);

     void *
     malloc(size_t size);

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

     #include <sys/mman.h>

     void *
     mmap(void * addr, size_t len, int prot, int flags, int fildes, off_t off);

DESCRIPTION

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

LEGACY SYNOPSIS

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

     void *
     mmap(void * addr, size_t len, int prot, int flags, int fildes, off_t off);

     The include file <sys/types.h> is needed for this function.

COMPATIBILITY

     mmap() now returns with errno set to EINVAL in places that historically succeeded.  The rules have changed as follows:

     o	 The flags parameter must specify either MAP_PRIVATE or MAP_SHARED.

     o	 The size parameter must not be 0.

     o	 The off parameter must be a multiple of pagesize, as returned by sysconf().

SEE ALSO

     mmap(2), alloca(3), calloc(3), free(3), malloc(3), realloc(3), compat(5)

STANDARDS

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

BSD
								   June 4, 1993 							       BSD