GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
Debian 6.0.1(Squeeze) |
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cfree(3) |
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cfree − free allocated memory
#include <stdlib.h>
/* In SunOS 4
*/
int cfree(void *ptr);
/* In glibc or
FreeBSD libcompat */
void cfree(void *ptr);
/* In SCO
OpenServer */
void cfree(char *ptr, unsigned
num, unsigned size);
/* In Solaris
watchmalloc.so.1 */
void cfree(void *ptr, size_t
nelem, size_t elsize);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
cfree(): _BSD_SOURCE || _SVID_SOURCE
This function should never be used. Use free(3) instead.
1-arg
cfree
In glibc, the function cfree() is a synonym for
free(3), "added for compatibility with
SunOS".
Other systems have other functions with this name. The declaration is sometimes in <stdlib.h> and sometimes in <malloc.h>.
3-arg
cfree
Some SCO and Solaris versions have malloc libraries with a
3-argument cfree(), apparently as an analog to
calloc(3).
If you need it while porting something, add
#define cfree(p, n, s) free((p))
to your file.
A frequently asked question is "Can I use free(3) to free memory allocated with calloc(3), or do I need cfree()?" Answer: use free(3).
An SCO manual writes: "The cfree routine is provided for compliance to the iBCSe2 standard and simply calls free. The num and size arguments to cfree are not used."
The SunOS version of cfree() (which is a synonym for free(3)) returns 1 on success and 0 on failure. In case of error, errno is set to EINVAL: the value of ptr was not a pointer to a block previously allocated by one of the routines in the malloc(3) family.
The 3-argument version of cfree() as used by SCO conforms to the iBCSe2 standard: Intel386 Binary Compatibility Specification, Edition 2.
malloc(3)
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.
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cfree(3) | |