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curl_global_cleanup(3) libcurl Manual curl_global_cleanup(3)
curl_global_cleanup - global libcurl cleanup
This function releases resources acquired by curl_global_init(3).
You should call curl_global_cleanup(3) once for each call you make to
curl_global_init(3), after you are done using libcurl.
This function is thread-safe since libcurl 7.84.0 if
curl_version_info(3) has the CURL_VERSION_THREADSAFE feature bit set
If this is not thread-safe, you must not call this function when any
other thread in the program (i.e. a thread sharing the same memory) is
running. This does not just mean no other thread that is using
libcurl. Because curl_global_cleanup(3) calls functions of other
libraries that are similarly thread unsafe, it could conflict with any
other thread that uses these other libraries.
See the description in libcurl(3) of global environment requirements
for details of how to use this function.
curl_global_cleanup(3) does not block waiting for any libcurl-created
threads to terminate (such as threads used for name resolving). If a
module containing libcurl is dynamically unloaded while libcurl-created
threads are still running then your program may crash or other
corruption may occur. We recommend you do not run libcurl from any
module that may be unloaded dynamically. This behavior may be addressed
in the future.
/* use libcurl, then before exiting... */
Added in 7.8
curl_global_init(3), libcurl(3), libcurl-thread(3),
libcurl 7.86.0 June 15, 2022 curl_global_cleanup(3)