thodg/libgit2/src/git/thread-utils.h

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• Hash : d44cfd46
  Author :
  Date : 2008-12-31T13:16:31
  

  Cleanup our header inclusion order to ensure pthread.h is early
  
  If we are using threads we need to make sure pthread.h comes
  in before just about anything else.  Some platforms enable
  macros that alter what other headers define.
  
  Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
  

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• src/git/thread-utils.h

• #ifndef INCLUDE_git_thread_utils_h__
  #define INCLUDE_git_thread_utils_h__
  
  /*
   * How TLS works is compiler+platform dependant
   * Sources: http://en.wikipedia.org/wiki/Thread-Specific_Storage
   *          http://predef.sourceforge.net/precomp.html
   */
  
  #define GIT_HAS_TLS 1
  #define GIT_HAS_PTHREAD 1
  
  #if defined(__APPLE__) && defined(__MACH__)
  # undef GIT_TLS
  
  #elif defined(__GNUC__) || \
        defined(__SUNPRO_C) || \
        defined(__SUNPRO_CC) || \
        defined(__xlc__) || \
        defined(__xlC__)
  # define GIT_TLS __thread
  
  #elif defined(__INTEL_COMPILER)
  # if defined(_WIN32) || defined(_WIN32_CE)
  #  define GIT_TLS __declspec(thread)
  #  undef GIT_HAS_PTHREAD
  # else
  #  define GIT_TLS __thread
  # endif
  
  #elif defined(_WIN32) || \
        defined(_WIN32_CE) || \
        defined(__BORLANDC__)
  # define GIT_TLS __declspec(thread)
  # undef GIT_HAS_PTHREAD
  
  #else
  # undef GIT_HAS_TLS
  # undef GIT_HAS_PTHREAD
  # define GIT_TLS /* nothing: tls vars are thread-global */
  #endif
  
  /* sparse and cygwin don't grok thread-local variables */
  #if defined(__CHECKER__) || defined(__CYGWIN__)
  # undef GIT_HAS_TLS
  # undef GIT_TLS
  # define GIT_TLS
  #endif
  
  #ifdef GIT_HAS_PTHREAD
  # define GIT_THREADS 1
  #else
  # undef GIT_THREADS
  #endif
  
  #endif /* INCLUDE_git_thread_utils_h__ */
  

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