1curl_global_init_mem(3)         libcurl Manual         curl_global_init_mem(3)
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NAME

6       curl_global_init_mem  - Global libcurl initialisation with memory call‐
7       backs
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SYNOPSIS

10       #include <curl/curl.h>
11       CURLcode curl_global_init_mem(long  flags,
12        curl_malloc_callback  m,
13        curl_free_callback  f,
14        curl_realloc_callback  r,
15        curl_strdup_callback  s,
16        curl_calloc_callback  c );
17

DESCRIPTION

19       This function works exactly as curl_global_init(3) with  one  addition:
20       it  allows  the  application  to set callbacks to replace the otherwise
21       used internal memory functions.
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23       If you are using libcurl from multiple threads  or  libcurl  was  built
24       with  the  threaded resolver option then the callback functions must be
25       thread safe. The threaded resolver is a common build option  to  enable
26       (and  in  some  cases the default) so we strongly urge you to make your
27       callback functions thread safe.
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29       All callback arguments must be set to valid function pointers. The pro‐
30       totypes for the given callbacks must match these:
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32       void *malloc_callback(size_t size);
33              To replace malloc()
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35       void free_callback(void *ptr);
36              To replace free()
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38       void *realloc_callback(void *ptr, size_t size);
39              To replace realloc()
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41       char *strdup_callback(const char *str);
42              To replace strdup()
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44       void *calloc_callback(size_t nmemb, size_t size);
45              To replace calloc()
46This  function  is  otherwise the same as curl_global_init(3), please refer to
47that man page for documentation.
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CAUTION

50       Manipulating these gives considerable powers to the application to  se‐
51       verely screw things up for libcurl. Take care!
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AVAILABILITY

54       Added in 7.12.0
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SEE ALSO

57       curl_global_init(3), curl_global_cleanup(3),
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61libcurl 7.66.0                  August 11, 2019        curl_global_init_mem(3)
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