1 /* 2 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "prims/jvm.h" 26 #include "runtime/os.hpp" 27 #include "utilities/vmError.hpp" 28 29 #include <unistd.h> 30 #include <sys/resource.h> 31 #include <sys/utsname.h> 32 33 34 // Check core dump limit and report possible place where core can be found 35 void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) { 36 int n; 37 struct rlimit rlim; 38 bool success; 39 40 n = get_core_path(buffer, bufferSize); 41 42 if (getrlimit(RLIMIT_CORE, &rlim) != 0) { 43 jio_snprintf(buffer + n, bufferSize - n, "/core or core.%d (may not exist)", current_process_id()); 44 success = true; 45 } else { 46 switch(rlim.rlim_cur) { 47 case RLIM_INFINITY: 48 jio_snprintf(buffer + n, bufferSize - n, "/core or core.%d", current_process_id()); 49 success = true; 50 break; 51 case 0: 52 jio_snprintf(buffer, bufferSize, "Core dumps have been disabled. To enable core dumping, try \"ulimit -c unlimited\" before starting Java again"); 53 success = false; 54 break; 55 default: 56 jio_snprintf(buffer + n, bufferSize - n, "/core or core.%d (max size %lu kB). To ensure a full core dump, try \"ulimit -c unlimited\" before starting Java again", current_process_id(), (unsigned long)(rlim.rlim_cur >> 10)); 57 success = true; 58 break; 59 } 60 } 61 VMError::report_coredump_status(buffer, success); 62 } 63 64 int os::get_last_error() { 65 return errno; 66 } 67 68 bool os::is_debugger_attached() { 69 // not implemented 70 return false; 71 } 72 73 void os::wait_for_keypress_at_exit(void) { 74 // don't do anything on posix platforms 75 return; 76 } 77 78 void os::Posix::print_load_average(outputStream* st) { 79 st->print("load average:"); 80 double loadavg[3]; 81 os::loadavg(loadavg, 3); 82 st->print("%0.02f %0.02f %0.02f", loadavg[0], loadavg[1], loadavg[2]); 83 st->cr(); 84 } 85 86 void os::Posix::print_rlimit_info(outputStream* st) { 87 st->print("rlimit:"); 88 struct rlimit rlim; 89 90 st->print(" STACK "); 91 getrlimit(RLIMIT_STACK, &rlim); 92 if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity"); 93 else st->print("%uk", rlim.rlim_cur >> 10); 94 95 st->print(", CORE "); 96 getrlimit(RLIMIT_CORE, &rlim); 97 if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity"); 98 else st->print("%uk", rlim.rlim_cur >> 10); 99 100 //Isn't there on solaris 101 #ifndef TARGET_OS_FAMILY_solaris 102 st->print(", NPROC "); 103 getrlimit(RLIMIT_NPROC, &rlim); 104 if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity"); 105 else st->print("%d", rlim.rlim_cur); 106 #endif 107 108 st->print(", NOFILE "); 109 getrlimit(RLIMIT_NOFILE, &rlim); 110 if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity"); 111 else st->print("%d", rlim.rlim_cur); 112 113 st->print(", AS "); 114 getrlimit(RLIMIT_AS, &rlim); 115 if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity"); 116 else st->print("%uk", rlim.rlim_cur >> 10); 117 st->cr(); 118 } 119 120 void os::Posix::print_uname_info(outputStream* st) { 121 // kernel 122 st->print("uname:"); 123 struct utsname name; 124 uname(&name); 125 st->print(name.sysname); st->print(" "); 126 st->print(name.release); st->print(" "); 127 st->print(name.version); st->print(" "); 128 st->print(name.machine); 129 st->cr(); 130 } 131 132