kc3-lang/gnulib/m4/pthread-mutex.m4

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• Hash : 32a72f45
  Author :
  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

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• m4/pthread-mutex.m4

• # pthread-mutex.m4 serial 3
  dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
  dnl This file is free software; the Free Software Foundation
  dnl gives unlimited permission to copy and/or distribute it,
  dnl with or without modifications, as long as this notice is preserved.
  
  AC_DEFUN([gl_PTHREAD_MUTEX],
  [
    AC_REQUIRE([gl_PTHREAD_H])
    AC_REQUIRE([AC_CANONICAL_HOST])
  
    if { case "$host_os" in mingw*) true;; *) false;; esac; } \
       && test $gl_threads_api = windows; then
      dnl Choose function names that don't conflict with the mingw-w64 winpthreads
      dnl library.
      REPLACE_PTHREAD_MUTEX_INIT=1
      REPLACE_PTHREAD_MUTEXATTR_INIT=1
      REPLACE_PTHREAD_MUTEXATTR_GETTYPE=1
      REPLACE_PTHREAD_MUTEXATTR_SETTYPE=1
      REPLACE_PTHREAD_MUTEXATTR_GETROBUST=1
      REPLACE_PTHREAD_MUTEXATTR_SETROBUST=1
      REPLACE_PTHREAD_MUTEXATTR_DESTROY=1
      REPLACE_PTHREAD_MUTEX_LOCK=1
      REPLACE_PTHREAD_MUTEX_TRYLOCK=1
      REPLACE_PTHREAD_MUTEX_TIMEDLOCK=1
      REPLACE_PTHREAD_MUTEX_UNLOCK=1
      REPLACE_PTHREAD_MUTEX_DESTROY=1
    else
      if test $HAVE_PTHREAD_H = 0; then
        HAVE_PTHREAD_MUTEX_INIT=0
        HAVE_PTHREAD_MUTEXATTR_INIT=0
        HAVE_PTHREAD_MUTEXATTR_GETTYPE=0
        HAVE_PTHREAD_MUTEXATTR_SETTYPE=0
        HAVE_PTHREAD_MUTEXATTR_GETROBUST=0
        HAVE_PTHREAD_MUTEXATTR_SETROBUST=0
        HAVE_PTHREAD_MUTEXATTR_DESTROY=0
        HAVE_PTHREAD_MUTEX_LOCK=0
        HAVE_PTHREAD_MUTEX_TRYLOCK=0
        dnl HAVE_PTHREAD_MUTEX_TIMEDLOCK is set in pthread_mutex_timedlock.m4.
        HAVE_PTHREAD_MUTEX_UNLOCK=0
        HAVE_PTHREAD_MUTEX_DESTROY=0
      else
        AC_CACHE_CHECK([for pthread_mutexattr_getrobust],
          [gl_cv_func_pthread_mutexattr_getrobust],
          [saved_LIBS="$LIBS"
           LIBS="$LIBS $LIBPMULTITHREAD"
           AC_LINK_IFELSE(
             [AC_LANG_SOURCE(
                [[extern
                  #ifdef __cplusplus
                  "C"
                  #endif
                  int pthread_mutexattr_getrobust (void);
                  int main ()
                  {
                    return pthread_mutexattr_getrobust ();
                  }
                ]])],
             [gl_cv_func_pthread_mutexattr_getrobust=yes],
             [gl_cv_func_pthread_mutexattr_getrobust=no])
           LIBS="$saved_LIBS"
          ])
        if test $gl_cv_func_pthread_mutexattr_getrobust = no; then
          HAVE_PTHREAD_MUTEXATTR_GETROBUST=0
          HAVE_PTHREAD_MUTEXATTR_SETROBUST=0
          AC_DEFINE([PTHREAD_MUTEXATTR_ROBUST_UNIMPLEMENTED], [1],
            [Define if the 'robust' attribute of pthread_mutex* doesn't exist.])
        fi
      fi
    fi
  ])
  

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