NAME

       curl_global_init_mem - global libcurl initialization with memory callbacks

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_global_init_mem(long flags,
                                     curl_malloc_callback m,
                                     curl_free_callback f,
                                     curl_realloc_callback r,
                                     curl_strdup_callback s,
                                     curl_calloc_callback c);

DESCRIPTION

       This  function  works  exactly  as  curl_global_init(3)  with  one addition: it allows the
       application to set callbacks to replace the otherwise used internal memory functions.

       If you are using libcurl from multiple threads or libcurl  was  built  with  the  threaded
       resolver  option then the callback functions must be thread safe. The threaded resolver is
       a common build option to enable (and in some cases the default) so we strongly urge you to
       make your callback functions thread safe.

       All  callback  arguments  must  be  set to valid function pointers. The prototypes for the
       given callbacks must match these:

       void *malloc_callback(size_t size);
              To replace malloc()

       void free_callback(void *ptr);
              To replace free()

       void *realloc_callback(void *ptr, size_t size);
              To replace realloc()

       char *strdup_callback(const char *str);
              To replace strdup()

       void *calloc_callback(size_t nmemb, size_t size);
              To replace calloc()

              This function is otherwise the same as curl_global_init(3), please  refer  to  that
              man page for documentation.

CAUTION

       Manipulating  these  gives considerable powers to the application to severely screw things
       up for libcurl. Take care!

PROTOCOLS

       This functionality affects all supported protocols

EXAMPLE

       extern void *malloc_cb(size_t);
       extern void free_cb(void *);
       extern void *realloc_cb(void *, size_t);
       extern char *strdup_cb(const char *);
       extern void *calloc_cb(size_t, size_t);

       int main(void)
       {
         curl_global_init_mem(CURL_GLOBAL_DEFAULT, malloc_cb,
                              free_cb, realloc_cb,
                              strdup_cb, calloc_cb);
       }

AVAILABILITY

       Added in curl 7.12.0

RETURN VALUE

       CURLE_OK (0) means everything was OK, non-zero means an error  occurred  as  <curl/curl.h>
       defines - see libcurl-errors(3).

SEE ALSO

       curl_global_cleanup(3), curl_global_init(3)