5693 // is_headless_jre()

  5694 //

  5695 // Test for the existence of xawt/libmawt.so or libawt_xawt.so

  5696 // in order to report if we are running in a headless jre

  5697 //

  5698 // Since JDK8 xawt/libmawt.so was moved into the same directory

  5699 // as libawt.so, and renamed libawt_xawt.so

  5700 //

  5701 bool os::is_headless_jre() {

  5702   struct stat statbuf;

  5703   char buf[MAXPATHLEN];

  5704   char libmawtpath[MAXPATHLEN];

  5705   const char *xawtstr  = "/xawt/libmawt.so";

  5706   const char *new_xawtstr = "/libawt_xawt.so";

  5707   char *p;

  5708 

  5709   // Get path to libjvm.so

  5710   os::jvm_path(buf, sizeof(buf));

  5711 

  5712   // Get rid of libjvm.so

  5713   p = strrchr(buf, '/');

  5714   if (p == NULL) {

  5715     return false;

  5716   } else {

  5717     *p = '\0';

  5718   }

  5719 

  5720   // Get rid of client or server

  5721   p = strrchr(buf, '/');

  5722   if (p == NULL) {

  5723     return false;

  5724   } else {

  5725     *p = '\0';

  5726   }

  5727 

  5728   // check xawt/libmawt.so

  5729   strcpy(libmawtpath, buf);

  5730   strcat(libmawtpath, xawtstr);

  5731   if (::stat(libmawtpath, &statbuf) == 0) return false;

  5732 

  5733   // check libawt_xawt.so

  5734   strcpy(libmawtpath, buf);

  5735   strcat(libmawtpath, new_xawtstr);

  5736   if (::stat(libmawtpath, &statbuf) == 0) return false;

  5737 

  5738   return true;

  5739 }

  5740