os::is_headless_jre()
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//Linux版(jdk7/hotspot/src/os/linux/vm/os_linux.cpp) // is_headless_jre() // // Test for the existence of libmawt in motif21 or xawt directories // in order to report if we are running in a headless jre // bool os::is_headless_jre() { struct stat statbuf; char buf[MAXPATHLEN]; char libmawtpath[MAXPATHLEN]; const char *xawtstr = "/xawt/libmawt.so"; const char *motifstr = "/motif21/libmawt.so"; char *p; // Get path to libjvm.so os::jvm_path(buf, sizeof(buf)); // Get rid of libjvm.so p = strrchr(buf, '/'); if (p == NULL) return false; else *p = '\0'; // Get rid of client or server p = strrchr(buf, '/'); if (p == NULL) return false; else *p = '\0'; // check xawt/libmawt.so strcpy(libmawtpath, buf); strcat(libmawtpath, xawtstr); if (::stat(libmawtpath, &statbuf) == 0) return false; // check motif21/libmawt.so strcpy(libmawtpath, buf); strcat(libmawtpath, motifstr); if (::stat(libmawtpath, &statbuf) == 0) return false; return true; }