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malloc (3)
  • malloc (3) ( Solaris man: Библиотечные вызовы )
  • malloc (3) ( FreeBSD man: Библиотечные вызовы )
  • malloc (3) ( Русские man: Библиотечные вызовы )
  • malloc (3) ( Linux man: Библиотечные вызовы )
  • >> malloc (3) ( POSIX man: Библиотечные вызовы )
  • malloc (9) ( FreeBSD man: Ядро )
  • Ключ malloc обнаружен в базе ключевых слов.
  •  

    NAME

    malloc - a memory allocator
     
    

    SYNOPSIS

    #include <stdlib.h>

    void *malloc(size_t size);
     

    DESCRIPTION

    The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 defers to the ISO C standard.

    The malloc() function shall allocate unused space for an object whose size in bytes is specified by size and whose value is unspecified.

    The order and contiguity of storage allocated by successive calls to malloc() is unspecified. The pointer returned if the allocation succeeds shall be suitably aligned so that it may be assigned to a pointer to any type of object and then used to access such an object in the space allocated (until the space is explicitly freed or reallocated). Each such allocation shall yield a pointer to an object disjoint from any other object. The pointer returned points to the start (lowest byte address) of the allocated space. If the space cannot be allocated, a null pointer shall be returned. If the size of the space requested is 0, the behavior is implementation-defined: the value returned shall be either a null pointer or a unique pointer.  

    RETURN VALUE

    Upon successful completion with size not equal to 0, malloc() shall return a pointer to the allocated space. If size is 0, either a null pointer or a unique pointer that can be successfully passed to free() shall be returned. Otherwise, it shall return a null pointer  and set errno to indicate the error.  

    ERRORS

    The malloc() function shall fail if:

    ENOMEM
    Insufficient storage space is available.

    The following sections are informative.  

    EXAMPLES

    None.  

    APPLICATION USAGE

    None.  

    RATIONALE

    None.  

    FUTURE DIRECTIONS

    None.  

    SEE ALSO

    calloc() , free() , realloc() , the Base Definitions volume of IEEE Std 1003.1-2001, <stdlib.h>  

    COPYRIGHT

    Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    EXAMPLES
    APPLICATION USAGE
    RATIONALE
    FUTURE DIRECTIONS
    SEE ALSO
    COPYRIGHT


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