3897 // is_headless_jre()

  3898 //

  3899 // Test for the existence of xawt/libmawt.so or libawt_xawt.so

  3900 // in order to report if we are running in a headless jre

  3901 //

  3902 // Since JDK8 xawt/libmawt.so was moved into the same directory

  3903 // as libawt.so, and renamed libawt_xawt.so

  3904 //

  3905 bool os::is_headless_jre() {

  3906 #ifdef __APPLE__

  3907   // We no longer build headless-only on Mac OS X

  3908   return false;

  3909 #else

  3910   struct stat statbuf;

  3911   char buf[MAXPATHLEN];

  3912   char libmawtpath[MAXPATHLEN];

  3913   const char *xawtstr  = "/xawt/libmawt" JNI_LIB_SUFFIX;

  3914   const char *new_xawtstr = "/libawt_xawt" JNI_LIB_SUFFIX;

  3915   char *p;

  3916 

  3917   // Get path to libjvm.so

  3918   os::jvm_path(buf, sizeof(buf));

  3919 

  3920   // Get rid of libjvm.so

  3921   p = strrchr(buf, '/');

  3922   if (p == NULL) {

  3923     return false;

  3924   } else {

  3925     *p = '\0';

  3926   }

  3927 

  3928   // Get rid of client or server

  3929   p = strrchr(buf, '/');

  3930   if (p == NULL) {

  3931     return false;

  3932   } else {

  3933     *p = '\0';

  3934   }

  3935 

  3936   // check xawt/libmawt.so

  3937   strcpy(libmawtpath, buf);

  3938   strcat(libmawtpath, xawtstr);

  3939   if (::stat(libmawtpath, &statbuf) == 0) return false;

  3940 

  3941   // check libawt_xawt.so

  3942   strcpy(libmawtpath, buf);

  3943   strcat(libmawtpath, new_xawtstr);

  3944   if (::stat(libmawtpath, &statbuf) == 0) return false;

  3945 

  3946   return true;

  3947 #endif

  3948 }

  3949