FreeBSD Manual Pages
curl_global_init_mem(3) Library Functions Manual curl_global_init_mem(3) NAME curl_global_init_mem - global libcurl initialization with memory call- backs 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 pro- totypes 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 se- verely 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 This function returns a CURLcode indicating success or error. CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3). If CURLOPT_ERRORBUFFER(3) was set with curl_easy_setopt(3) there can be an error message stored in the error buffer when non-zero is returned. SEE ALSO curl_global_cleanup(3), curl_global_init(3) libcurl 2025-06-03 curl_global_init_mem(3)
NAME | SYNOPSIS | DESCRIPTION | CAUTION | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=curl_global_init_mem&sektion=3&manpath=FreeBSD+Ports+14.3.quarterly>