git.m6w6.name Git - m6w6/libmemcached/blob - docs/man/memcached_set_memory_allocators.3

   1 .TH "MEMCACHED_SET_MEMORY_ALLOCATORS" "3" "April 11, 2011" "0.47" "libmemcached"
   2 .SH NAME
   3 memcached_set_memory_allocators \- libmemcached Documentation
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  34 Manage memory allocator functions
  35 .SH LIBRARY
  36 .sp
  37 C Client Library for memcached (libmemcached, \-lmemcached)
  38 .SH SYNOPSIS
  39 .sp
  40 .nf
  41 .ft C
  42 #include <libmemcached/memcached.h>
  43
  44 memcached_return_t memcached_set_memory_allocators (memcached_st *ptr, memcached_malloc_fn mem_malloc, memcached_free_fn mem_free, memcached_realloc_fn mem_realloc, memcached_calloc_fn mem_calloc, void *context);
  45
  46 void memcached_get_memory_allocators (memcached_st *ptr, memcached_malloc_fn *mem_malloc, memcached_free_fn *mem_free, memcached_realloc_fn *mem_realloc, memcached_calloc_fn *mem_calloc);
  47
  48 void * memcached_get_memory_allocators_context(const memcached_st *ptr);
  49
  50 void * (*memcached_malloc_fn) (memcached_st *ptr, const size_t size, void *context);
  51
  52 void * (*memcached_realloc_fn) (memcached_st *ptr, void *mem, const size_t size, void *context);
  53
  54 void (*memcached_free_fn) (memcached_st *ptr, void *mem, void *context);
  55
  56 void * (*memcached_calloc_fn) (memcached_st *ptr, size_t nelem, const size_t elsize, void *context);
  57 .ft P
  58 .fi
  59 .SH DESCRIPTION
  60 .sp
  61 libmemcached(3) allows you to specify your own memory allocators optimized
  62 for your application. This enables libmemcached to be used inside of applications that have their own malloc implementation.
  63 .sp
  64 memcached_set_memory_allocators() is used to set the memory allocators used
  65 by the memcached instance specified by ptr. Please note that you cannot
  66 override only one of the memory allocators, you have to specify a complete
  67 new set if you want to override one of them. All of the memory allocation
  68 functions should behave as specified in the C99 standard. Specify NULL as
  69 all functions to reset them to the default values.
  70 .sp
  71 memcached_get_memory_allocators() is used to get the currently used memory
  72 allocators by a mamcached handle.
  73 .sp
  74 memcached_get_memory_allocators_context() returns the void * that was
  75 passed in during the call to memcached_set_memory_allocators().
  76 .sp
  77 The first argument to the memory allocator functions is a pointer to a
  78 memcached structure, the is passed as const and you will need to clone
  79 it in order to make use of any operation which would modify it.
  80 .SH NOTES
  81 .sp
  82 In version 0.38 all functions were modified to have a context void pointer
  83 passed to them. This was so that customer allocators could have their
  84 own space for memory.
  85 .SH RETURN
  86 .sp
  87 memcached_set_memory_allocators() return MEMCACHED_SUCCESS upon success,
  88 and MEMCACHED_FAILURE if you don\(aqt pass a complete set of function pointers.
  89 .SH HOME
  90 .sp
  91 To find out more information please check:
  92 \fI\%https://launchpad.net/libmemcached\fP
  93 .SH SEE ALSO
  94 .sp
  95 \fImemcached(1)\fP \fIlibmemcached(3)\fP \fImemcached_strerror(3)\fP
  96 .SH AUTHOR
  97 Brian Aker
  98 .SH COPYRIGHT
  99 2011, Brian Aker DataDifferential, http://datadifferential.com/
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