thodg/libgit2/src/streams/curl.h

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• Hash : 2022b004
  Author :
  Date : 2018-02-28T12:06:59
  

  curl: explicitly initialize and cleanup global curl state
  
  Our curl-based streams make use of the easy curl interface. This
  interface automatically initializes and de-initializes the global curl
  state by calling out to `curl_global_init` and `curl_global_cleanup`.
  Thus, all global state will be repeatedly re-initialized when creating
  multiple curl streams in succession. Despite being inefficient, this is
  not thread-safe due to `curl_global_init` being not thread-safe itself.
  Thus a multi-threaded programing handling multiple curl streams at the
  same time is inherently racy.
  
  Fix the issue by globally initializing and cleaning up curl's state.
  

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• src/streams/curl.h

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  #ifndef INCLUDE_streams_curl_h__
  #define INCLUDE_streams_curl_h__
  
  #include "common.h"
  
  #include "git2/sys/stream.h"
  
  extern int git_curl_stream_global_init(void);
  extern int git_curl_stream_new(git_stream **out, const char *host, const char *port);
  
  #endif
  

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