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Annotation of coherent/a/usr/man/ALL/sbrk, revision 1.1.1.1

1.1       root        1: 
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                      3: sbrk()                 COHERENT System Call                sbrk()
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                      8: Increase a program's data space
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                     10: cchhaarr *ssbbrrkk(_i_n_c_r_e_m_e_n_t) uunnssiiggnneedd iinntt _i_n_c_r_e_m_e_n_t;
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                     12: sbrk increases a program's data space by increment bytes.  It in-
                     13: crements the variable _ _end; this  variable is set by the C run-
                     14: time startup  routine, and   points to  the end of  the program's
                     15: data  space.  The  memory  allocation routine  malloc calls  sbrk
                     16: should you  attempt to allocate  more space than  is available in
                     17: the program's data space.
                     18: 
                     19: sbrk returns  a pointer to the previous setting  of _ _end if the
                     20: requested memory is available, or NULL if it is not.
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                     22: ***** See Also *****
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                     24: brk(), COHERENT system calls, malloc()
                     25: 
                     26: ***** Notes *****
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                     28: sbrk will not  increase the size of the program  data area if the
                     29: physical memory  requested exceeds the  physical memory allocated
                     30: by COHERENT, or if the  requested memory exceeds the limit set in
                     31: the user-defined  variable maxmem.  sbrk  does not keep  track of
                     32: how space  is used; therefore, memory seized  with sbrk cannot be
                     33: freed.  Caveat utilitor.
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                     64: COHERENT Lexicon                                           Page 1
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