260
261 #if INCLUDE_SERVICES
262 JVMTIAgentLoadDCmd::JVMTIAgentLoadDCmd(outputStream* output, bool heap) :
263 DCmdWithParser(output, heap),
264 _libpath("library path", "Absolute path of the JVMTI agent to load.",
265 "STRING", true),
266 _option("agent option", "Option string to pass the agent.", "STRING", false) {
267 _dcmdparser.add_dcmd_argument(&_libpath);
268 _dcmdparser.add_dcmd_argument(&_option);
269 }
270
271 void JVMTIAgentLoadDCmd::execute(DCmdSource source, TRAPS) {
272
273 if (_libpath.value() == NULL) {
274 output()->print_cr("JVMTI.agent_load dcmd needs library path.");
275 return;
276 }
277
278 char *suffix = strrchr(_libpath.value(), '.');
279 bool is_java_agent = (suffix != NULL) && (strncmp(".jar", suffix, 4) == 0);
280
281 if (is_java_agent) {
282 if (_option.value() == NULL) {
283 JvmtiExport::load_agent_library("instrument", "false",
284 _libpath.value(), output());
285 } else {
286 size_t opt_len = strlen(_libpath.value()) + strlen(_option.value()) + 2;
287 if (opt_len > 4096) {
288 output()->print_cr("JVMTI agent attach failed: Options is too long.");
289 return;
290 }
291
292 char *opt = (char *)os::malloc(opt_len, mtInternal);
293 if (opt == NULL) {
294 output()->print_cr("JVMTI agent attach failed: "
295 "Could not allocate %zu bytes for argument.",
296 opt_len);
297 return;
298 }
299
300 jio_snprintf(opt, opt_len, "%s=%s", _libpath.value(), _option.value());
301 JvmtiExport::load_agent_library("instrument", "false", opt, output());
302
303 os::free(opt);
304 }
305 } else {
306 JvmtiExport::load_agent_library(_libpath.value(), "true",
307 _option.value(), output());
308 }
309 }
310
311 int JVMTIAgentLoadDCmd::num_arguments() {
312 ResourceMark rm;
313 JVMTIAgentLoadDCmd* dcmd = new JVMTIAgentLoadDCmd(NULL, false);
314 if (dcmd != NULL) {
315 DCmdMark mark(dcmd);
316 return dcmd->_dcmdparser.num_arguments();
317 } else {
318 return 0;
319 }
320 }
321 #endif // INCLUDE_SERVICES
322
323 void PrintSystemPropertiesDCmd::execute(DCmdSource source, TRAPS) {
324 // load VMSupport
325 Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport();
326 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK);
327 instanceKlassHandle ik (THREAD, k);
328 if (ik->should_be_initialized()) {
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260
261 #if INCLUDE_SERVICES
262 JVMTIAgentLoadDCmd::JVMTIAgentLoadDCmd(outputStream* output, bool heap) :
263 DCmdWithParser(output, heap),
264 _libpath("library path", "Absolute path of the JVMTI agent to load.",
265 "STRING", true),
266 _option("agent option", "Option string to pass the agent.", "STRING", false) {
267 _dcmdparser.add_dcmd_argument(&_libpath);
268 _dcmdparser.add_dcmd_argument(&_option);
269 }
270
271 void JVMTIAgentLoadDCmd::execute(DCmdSource source, TRAPS) {
272
273 if (_libpath.value() == NULL) {
274 output()->print_cr("JVMTI.agent_load dcmd needs library path.");
275 return;
276 }
277
278 char *suffix = strrchr(_libpath.value(), '.');
279 bool is_java_agent = (suffix != NULL) && (strncmp(".jar", suffix, 4) == 0);
280 jint result = JNI_ERR;
281
282 if (is_java_agent) {
283 if (_option.value() == NULL) {
284 result = JvmtiExport::load_agent_library("instrument", "false",
285 _libpath.value(), output());
286 } else {
287 size_t opt_len = strlen(_libpath.value()) + strlen(_option.value()) + 2;
288 if (opt_len > 4096) {
289 output()->print_cr("JVMTI agent attach failed: Options is too long.");
290 return;
291 }
292
293 char *opt = (char *)os::malloc(opt_len, mtInternal);
294 if (opt == NULL) {
295 output()->print_cr("JVMTI agent attach failed: "
296 "Could not allocate %zu bytes for argument.",
297 opt_len);
298 return;
299 }
300
301 jio_snprintf(opt, opt_len, "%s=%s", _libpath.value(), _option.value());
302 result = JvmtiExport::load_agent_library("instrument", "false",
303 opt, output());
304
305 os::free(opt);
306 }
307 } else {
308 result = JvmtiExport::load_agent_library(_libpath.value(), "true",
309 _option.value(), output());
310 }
311
312 output()->print_cr("JVMTI agent attach %s.",
313 (result == JNI_OK) ? "succeeded" : "failed");
314 }
315
316 int JVMTIAgentLoadDCmd::num_arguments() {
317 ResourceMark rm;
318 JVMTIAgentLoadDCmd* dcmd = new JVMTIAgentLoadDCmd(NULL, false);
319 if (dcmd != NULL) {
320 DCmdMark mark(dcmd);
321 return dcmd->_dcmdparser.num_arguments();
322 } else {
323 return 0;
324 }
325 }
326 #endif // INCLUDE_SERVICES
327
328 void PrintSystemPropertiesDCmd::execute(DCmdSource source, TRAPS) {
329 // load VMSupport
330 Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport();
331 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK);
332 instanceKlassHandle ik (THREAD, k);
333 if (ik->should_be_initialized()) {
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