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.IX Title "Memcached::libmemcached::memcached_memory_allocators 3pm"
.TH Memcached::libmemcached::memcached_memory_allocators 3pm "2020-11-09" "perl v5.32.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH "NAME"
memcached_set_memory_allocators, memcached_get_memory_allocators, memcached_set_memory_allocators_context \- Manage memory allocator functions
.SH "LIBRARY"
.IX Header "LIBRARY"
C Client Library for memcached (libmemcached, \-lmemcached)
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&  #include <memcached.h>
\&
\&  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);
\&
\&  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);
\&
\&  void * 
\&    memcached_get_memory_allocators_context(const memcached_st *ptr);
\&
\&  void *
\&    (*memcached_malloc_fn) (memcached_st *ptr, const size_t size,
\&                            void *context);
\&
\&  void *
\&    (*memcached_realloc_fn) (memcached_st *ptr, void *mem,
\&                             const size_t size,
\&                             void *context);
\&
\&  void
\&    (*memcached_free_fn) (memcached_st *ptr, void *mem,
\&                          void *context);
\&
\&  void *
\&  (*memcached_calloc_fn) (memcached_st *ptr,
\&                          size_t nelem,
\&                          const size_t elsize,
\&                          void *context);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBlibmemcached\fR\|(3) allows you to specify your own memory allocators optimized
for your application.
.PP
\&\fBmemcached_set_memory_allocators()\fR is used to set the memory allocators used
by the memcached instance specified by ptr. Please note that you cannot
override only one of the memory allocators, you have to specify a complete
new set if you want to override one of them. All of the memory allocation
functions should behave as specified in the C99 standard. Specify \s-1NULL\s0 as
all functions to reset them to the default values.
.PP
\&\fBmemcached_get_memory_allocators()\fR is used to get the currently used memory
allocators by a mamcached handle.
.PP
\&\fBmemcached_get_memory_allocators_context()\fR returns the void * that was
passed in during the call to \fBmemcached_set_memory_allocators()\fR.
.PP
The first argument to the memory allocator functions is a pointer to a
memcached structure, the is passed as const and you will need to clone
it in order to make use of any operation which would modify it.
.SH "NOTES"
.IX Header "NOTES"
In version 0.38 all functions were modified to have a context void pointer
passed to them. This was so that customer allocators could have their
own space for memory.
.SH "RETURN"
.IX Header "RETURN"
\&\fBmemcached_set_memory_allocators()\fR return \s-1MEMCACHED_SUCCESS\s0 upon success,
and \s-1MEMCACHED_FAILURE\s0 if you don't pass a complete set of function pointers.
.SH "HOME"
.IX Header "HOME"
To find out more information please check:
<https://launchpad.net/libmemcached>
.SH "AUTHOR"
.IX Header "AUTHOR"
Trond Norbye, <trond.norbye@gmail.com>
Brian Aker, <brian@tangent.orf<gt>
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBmemcached\fR\|(1) \fBlibmemcached\fR\|(3) \fBmemcached_get_user_data\fR\|(3) \fBmemcached_set_user_data\fR\|(3)