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agent/src/os/solaris/proc/saproc.cpp@c18cbe5936b8 (annotated)

agent/src/os/solaris/proc/saproc.cpp

Thu, 27 May 2010 19:08:38 -0700

author

trims

date

Thu, 27 May 2010 19:08:38 -0700

changeset 1907

c18cbe5936b8

parent 1327

a94af87c3357

child 2838

405c634f4aaa

permissions

-rw-r--r--

6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair

duke@435	1	/*
trims@1907	2	* Copyright (c) 2002, 2009, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	#include "salibproc.h"
duke@435	26	#include "sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal.h"
duke@435	27	#include <thread_db.h>
duke@435	28	#include <strings.h>
duke@435	29	#include <limits.h>
duke@435	30	#include <demangle.h>
duke@435	31	#include <stdarg.h>
duke@435	32	#include <stdlib.h>
duke@435	33	#include <errno.h>
duke@435	34
duke@435	35	#define CHECK_EXCEPTION_(value) if(env->ExceptionOccurred()) { return value; }
duke@435	36	#define CHECK_EXCEPTION if(env->ExceptionOccurred()) { return;}
duke@435	37	#define THROW_NEW_DEBUGGER_EXCEPTION_(str, value) { throwNewDebuggerException(env, str); return value; }
duke@435	38	#define THROW_NEW_DEBUGGER_EXCEPTION(str) { throwNewDebuggerException(env, str); return;}
duke@435	39
duke@435	40	#define SYMBOL_BUF_SIZE 256
duke@435	41	#define ERR_MSG_SIZE (PATH_MAX + 256)
duke@435	42
duke@435	43	// debug mode
duke@435	44	static int _libsaproc_debug = 0;
duke@435	45
duke@435	46	static void print_debug(const char* format,...) {
duke@435	47	if (_libsaproc_debug) {
duke@435	48	va_list alist;
duke@435	49
duke@435	50	va_start(alist, format);
duke@435	51	fputs("libsaproc DEBUG: ", stderr);
duke@435	52	vfprintf(stderr, format, alist);
duke@435	53	va_end(alist);
duke@435	54	}
duke@435	55	}
duke@435	56
duke@435	57	struct Debugger {
duke@435	58	JNIEnv* env;
duke@435	59	jobject this_obj;
duke@435	60	};
duke@435	61
duke@435	62	struct DebuggerWithObject : Debugger {
duke@435	63	jobject obj;
duke@435	64	};
duke@435	65
duke@435	66	struct DebuggerWith2Objects : DebuggerWithObject {
duke@435	67	jobject obj2;
duke@435	68	};
duke@435	69
duke@435	70	/*
duke@435	71	* Portions of user thread level detail gathering code is from pstack source
duke@435	72	* code. See pstack.c in Solaris 2.8 user commands source code.
duke@435	73	*/
duke@435	74
duke@435	75	static void throwNewDebuggerException(JNIEnv* env, const char* errMsg) {
duke@435	76	env->ThrowNew(env->FindClass("sun/jvm/hotspot/debugger/DebuggerException"), errMsg);
duke@435	77	}
duke@435	78
duke@435	79	// JNI ids for some fields, methods
duke@435	80
duke@435	81	// libproc handler pointer
duke@435	82	static jfieldID p_ps_prochandle_ID = 0;
duke@435	83
duke@435	84	// libthread.so dlopen handle, thread agent ptr and function pointers
duke@435	85	static jfieldID libthread_db_handle_ID = 0;
duke@435	86	static jfieldID p_td_thragent_t_ID = 0;
duke@435	87	static jfieldID p_td_init_ID = 0;
duke@435	88	static jfieldID p_td_ta_new_ID = 0;
duke@435	89	static jfieldID p_td_ta_delete_ID = 0;
duke@435	90	static jfieldID p_td_ta_thr_iter_ID = 0;
duke@435	91	static jfieldID p_td_thr_get_info_ID = 0;
duke@435	92	static jfieldID p_td_ta_map_id2thr_ID = 0;
duke@435	93	static jfieldID p_td_thr_getgregs_ID = 0;
duke@435	94
duke@435	95	// reg index fields
duke@435	96	static jfieldID pcRegIndex_ID = 0;
duke@435	97	static jfieldID fpRegIndex_ID = 0;
duke@435	98
duke@435	99	// part of the class sharing workaround
duke@435	100	static jfieldID classes_jsa_fd_ID = 0;
duke@435	101	static jfieldID p_file_map_header_ID = 0;
duke@435	102
duke@435	103	// method ids
duke@435	104
duke@435	105	static jmethodID getThreadForThreadId_ID = 0;
duke@435	106	static jmethodID createSenderFrame_ID = 0;
duke@435	107	static jmethodID createLoadObject_ID = 0;
duke@435	108	static jmethodID createClosestSymbol_ID = 0;
duke@435	109	static jmethodID listAdd_ID = 0;
duke@435	110
duke@435	111	/*
duke@435	112	* Functions we need from libthread_db
duke@435	113	*/
duke@435	114	typedef td_err_e
duke@435	115	(*p_td_init_t)(void);
duke@435	116	typedef td_err_e
duke@435	117	(*p_td_ta_new_t)(void *, td_thragent_t **);
duke@435	118	typedef td_err_e
duke@435	119	(*p_td_ta_delete_t)(td_thragent_t *);
duke@435	120	typedef td_err_e
duke@435	121	(*p_td_ta_thr_iter_t)(const td_thragent_t *, td_thr_iter_f *, void *,
duke@435	122	td_thr_state_e, int, sigset_t *, unsigned);
duke@435	123	typedef td_err_e
duke@435	124	(*p_td_thr_get_info_t)(const td_thrhandle_t *, td_thrinfo_t *);
duke@435	125	typedef td_err_e
duke@435	126	(*p_td_ta_map_id2thr_t)(const td_thragent_t *, thread_t, td_thrhandle_t *);
duke@435	127	typedef td_err_e
duke@435	128	(*p_td_thr_getgregs_t)(const td_thrhandle_t *, prgregset_t);
duke@435	129
duke@435	130	static void
duke@435	131	clear_libthread_db_ptrs(JNIEnv* env, jobject this_obj) {
duke@435	132	// release libthread_db agent, if we had created
duke@435	133	p_td_ta_delete_t p_td_ta_delete = 0;
duke@435	134	p_td_ta_delete = (p_td_ta_delete_t) env->GetLongField(this_obj, p_td_ta_delete_ID);
duke@435	135
duke@435	136	td_thragent_t *p_td_thragent_t = 0;
duke@435	137	p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID);
duke@435	138	if (p_td_thragent_t != 0 && p_td_ta_delete != 0) {
duke@435	139	p_td_ta_delete(p_td_thragent_t);
duke@435	140	}
duke@435	141
duke@435	142	// dlclose libthread_db.so
duke@435	143	void* libthread_db_handle = (void*) env->GetLongField(this_obj, libthread_db_handle_ID);
duke@435	144	if (libthread_db_handle != 0) {
duke@435	145	dlclose(libthread_db_handle);
duke@435	146	}
duke@435	147
duke@435	148	env->SetLongField(this_obj, libthread_db_handle_ID, (jlong)0);
duke@435	149	env->SetLongField(this_obj, p_td_init_ID, (jlong)0);
duke@435	150	env->SetLongField(this_obj, p_td_ta_new_ID, (jlong)0);
duke@435	151	env->SetLongField(this_obj, p_td_ta_delete_ID, (jlong)0);
duke@435	152	env->SetLongField(this_obj, p_td_ta_thr_iter_ID, (jlong)0);
duke@435	153	env->SetLongField(this_obj, p_td_thr_get_info_ID, (jlong)0);
duke@435	154	env->SetLongField(this_obj, p_td_ta_map_id2thr_ID, (jlong)0);
duke@435	155	env->SetLongField(this_obj, p_td_thr_getgregs_ID, (jlong)0);
duke@435	156	}
duke@435	157
duke@435	158
duke@435	159	static void detach_internal(JNIEnv* env, jobject this_obj) {
duke@435	160	// clear libthread_db stuff
duke@435	161	clear_libthread_db_ptrs(env, this_obj);
duke@435	162
duke@435	163	// release ptr to ps_prochandle
duke@435	164	jlong p_ps_prochandle;
duke@435	165	p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
duke@435	166	if (p_ps_prochandle != 0L) {
duke@435	167	Prelease((struct ps_prochandle*) p_ps_prochandle, PRELEASE_CLEAR);
duke@435	168	}
duke@435	169
duke@435	170	// part of the class sharing workaround
duke@435	171	int classes_jsa_fd = env->GetIntField(this_obj, classes_jsa_fd_ID);
duke@435	172	if (classes_jsa_fd != -1) {
duke@435	173	close(classes_jsa_fd);
duke@435	174	struct FileMapHeader* pheader = (struct FileMapHeader*) env->GetLongField(this_obj, p_file_map_header_ID);
duke@435	175	if (pheader != NULL) {
duke@435	176	free(pheader);
duke@435	177	}
duke@435	178	}
duke@435	179	}
duke@435	180
duke@435	181	// Is it okay to ignore libthread_db failure? Set env var to ignore
duke@435	182	// libthread_db failure. You can still debug, but will miss threads
duke@435	183	// related functionality.
duke@435	184	static bool sa_ignore_threaddb = (getenv("SA_IGNORE_THREADDB") != 0);
duke@435	185
duke@435	186	#define HANDLE_THREADDB_FAILURE(msg) \
duke@435	187	if (sa_ignore_threaddb) { \
duke@435	188	printf("libsaproc WARNING: %s\n", msg); \
duke@435	189	return; \
duke@435	190	} else { \
duke@435	191	THROW_NEW_DEBUGGER_EXCEPTION(msg); \
duke@435	192	}
duke@435	193
duke@435	194	#define HANDLE_THREADDB_FAILURE_(msg, ret) \
duke@435	195	if (sa_ignore_threaddb) { \
duke@435	196	printf("libsaproc WARNING: %s\n", msg); \
duke@435	197	return ret; \
duke@435	198	} else { \
duke@435	199	THROW_NEW_DEBUGGER_EXCEPTION_(msg, ret); \
duke@435	200	}
duke@435	201
duke@435	202	static const char * alt_root = NULL;
duke@435	203	static int alt_root_len = -1;
duke@435	204
duke@435	205	#define SA_ALTROOT "SA_ALTROOT"
duke@435	206
duke@435	207	static void init_alt_root() {
duke@435	208	if (alt_root_len == -1) {
duke@435	209	alt_root = getenv(SA_ALTROOT);
duke@435	210	if (alt_root)
duke@435	211	alt_root_len = strlen(alt_root);
duke@435	212	else
duke@435	213	alt_root_len = 0;
duke@435	214	}
duke@435	215	}
duke@435	216
never@1327	217	// This function is a complete substitute for the open system call
never@1327	218	// since it's also used to override open calls from libproc to
never@1327	219	// implement as a pathmap style facility for the SA. If libproc
never@1327	220	// starts using other interfaces then this might have to extended to
never@1327	221	// cover other calls.
never@1327	222	extern "C" int libsaproc_open(const char * name, int oflag, ...) {
never@1327	223	if (oflag == O_RDONLY) {
never@1327	224	init_alt_root();
duke@435	225
never@1327	226	if (_libsaproc_debug) {
never@1327	227	printf("libsaproc DEBUG: libsaproc_open %s\n", name);
duke@435	228	}
duke@435	229
never@1327	230	if (alt_root_len > 0) {
never@1327	231	int fd = -1;
never@1327	232	char alt_path[PATH_MAX+1];
never@1327	233
duke@435	234	strcpy(alt_path, alt_root);
never@1327	235	strcat(alt_path, name);
duke@435	236	fd = open(alt_path, O_RDONLY);
duke@435	237	if (fd >= 0) {
duke@435	238	if (_libsaproc_debug) {
never@1327	239	printf("libsaproc DEBUG: libsaproc_open substituted %s\n", alt_path);
duke@435	240	}
duke@435	241	return fd;
duke@435	242	}
never@1327	243
never@1327	244	if (strrchr(name, '/')) {
never@1327	245	strcpy(alt_path, alt_root);
never@1327	246	strcat(alt_path, strrchr(name, '/'));
never@1327	247	fd = open(alt_path, O_RDONLY);
never@1327	248	if (fd >= 0) {
never@1327	249	if (_libsaproc_debug) {
never@1327	250	printf("libsaproc DEBUG: libsaproc_open substituted %s\n", alt_path);
never@1327	251	}
never@1327	252	return fd;
never@1327	253	}
never@1327	254	}
duke@435	255	}
duke@435	256	}
never@1327	257
never@1327	258	{
never@1327	259	mode_t mode;
never@1327	260	va_list ap;
never@1327	261	va_start(ap, oflag);
never@1327	262	mode = va_arg(ap, mode_t);
never@1327	263	va_end(ap);
never@1327	264
never@1327	265	return open(name, oflag, mode);
never@1327	266	}
duke@435	267	}
duke@435	268
duke@435	269
duke@435	270	static void * pathmap_dlopen(const char * name, int mode) {
duke@435	271	init_alt_root();
duke@435	272
duke@435	273	if (_libsaproc_debug) {
duke@435	274	printf("libsaproc DEBUG: pathmap_dlopen %s\n", name);
duke@435	275	}
duke@435	276
duke@435	277	void * handle = NULL;
duke@435	278	if (alt_root_len > 0) {
duke@435	279	char alt_path[PATH_MAX+1];
duke@435	280	strcpy(alt_path, alt_root);
duke@435	281	strcat(alt_path, name);
duke@435	282	handle = dlopen(alt_path, mode);
duke@435	283	if (_libsaproc_debug && handle) {
duke@435	284	printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path);
duke@435	285	}
duke@435	286
duke@435	287	if (handle == NULL && strrchr(name, '/')) {
duke@435	288	strcpy(alt_path, alt_root);
duke@435	289	strcat(alt_path, strrchr(name, '/'));
duke@435	290	handle = dlopen(alt_path, mode);
duke@435	291	if (_libsaproc_debug && handle) {
duke@435	292	printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path);
duke@435	293	}
duke@435	294	}
duke@435	295	}
duke@435	296	if (handle == NULL) {
duke@435	297	handle = dlopen(name, mode);
duke@435	298	}
duke@435	299	if (_libsaproc_debug) {
duke@435	300	printf("libsaproc DEBUG: pathmap_dlopen %s return 0x%x\n", name, handle);
duke@435	301	}
duke@435	302	return handle;
duke@435	303	}
duke@435	304
duke@435	305	// libproc and libthread_db callback functions
duke@435	306
duke@435	307	extern "C" {
duke@435	308
duke@435	309	static int
duke@435	310	init_libthread_db_ptrs(void *cd, const prmap_t *pmp, const char *object_name) {
duke@435	311	Debugger* dbg = (Debugger*) cd;
duke@435	312	JNIEnv* env = dbg->env;
duke@435	313	jobject this_obj = dbg->this_obj;
duke@435	314	struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID);
duke@435	315
duke@435	316	char *s1 = 0, *s2 = 0;
duke@435	317	char libthread_db[PATH_MAX];
duke@435	318
duke@435	319	if (strstr(object_name, "/libthread.so.") == NULL)
duke@435	320	return (0);
duke@435	321
duke@435	322	/*
duke@435	323	* We found a libthread.
duke@435	324	* dlopen() the matching libthread_db and get the thread agent handle.
duke@435	325	*/
duke@435	326	if (Pstatus(ph)->pr_dmodel == PR_MODEL_NATIVE) {
duke@435	327	(void) strcpy(libthread_db, object_name);
duke@435	328	s1 = (char*) strstr(object_name, ".so.");
duke@435	329	s2 = (char*) strstr(libthread_db, ".so.");
duke@435	330	(void) strcpy(s2, "_db");
duke@435	331	s2 += 3;
duke@435	332	(void) strcpy(s2, s1);
duke@435	333	} else {
duke@435	334	#ifdef _LP64
duke@435	335	/*
duke@435	336	* The victim process is 32-bit, we are 64-bit.
duke@435	337	* We have to find the 64-bit version of libthread_db
duke@435	338	* that matches the victim's 32-bit version of libthread.
duke@435	339	*/
duke@435	340	(void) strcpy(libthread_db, object_name);
duke@435	341	s1 = (char*) strstr(object_name, "/libthread.so.");
duke@435	342	s2 = (char*) strstr(libthread_db, "/libthread.so.");
duke@435	343	(void) strcpy(s2, "/64");
duke@435	344	s2 += 3;
duke@435	345	(void) strcpy(s2, s1);
duke@435	346	s1 = (char*) strstr(s1, ".so.");
duke@435	347	s2 = (char*) strstr(s2, ".so.");
duke@435	348	(void) strcpy(s2, "_db");
duke@435	349	s2 += 3;
duke@435	350	(void) strcpy(s2, s1);
duke@435	351	#else
duke@435	352	return (0);
duke@435	353	#endif /* _LP64 */
duke@435	354	}
duke@435	355
duke@435	356	void* libthread_db_handle = 0;
duke@435	357	if ((libthread_db_handle = pathmap_dlopen(libthread_db, RTLD_LAZY|RTLD_LOCAL)) == NULL) {
duke@435	358	char errMsg[PATH_MAX + 256];
duke@435	359	sprintf(errMsg, "Can't load %s!", libthread_db);
duke@435	360	HANDLE_THREADDB_FAILURE_(errMsg, 0);
duke@435	361	}
duke@435	362	env->SetLongField(this_obj, libthread_db_handle_ID, (jlong)(uintptr_t)libthread_db_handle);
duke@435	363
duke@435	364	void* tmpPtr = 0;
duke@435	365	tmpPtr = dlsym(libthread_db_handle, "td_init");
duke@435	366	if (tmpPtr == 0) {
duke@435	367	HANDLE_THREADDB_FAILURE_("dlsym failed on td_init!", 0);
duke@435	368	}
duke@435	369	env->SetLongField(this_obj, p_td_init_ID, (jlong)(uintptr_t) tmpPtr);
duke@435	370
duke@435	371	tmpPtr =dlsym(libthread_db_handle, "td_ta_new");
duke@435	372	if (tmpPtr == 0) {
duke@435	373	HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_new!", 0);
duke@435	374	}
duke@435	375	env->SetLongField(this_obj, p_td_ta_new_ID, (jlong)(uintptr_t) tmpPtr);
duke@435	376
duke@435	377	tmpPtr = dlsym(libthread_db_handle, "td_ta_delete");
duke@435	378	if (tmpPtr == 0) {
duke@435	379	HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_delete!", 0);
duke@435	380	}
duke@435	381	env->SetLongField(this_obj, p_td_ta_delete_ID, (jlong)(uintptr_t) tmpPtr);
duke@435	382
duke@435	383	tmpPtr = dlsym(libthread_db_handle, "td_ta_thr_iter");
duke@435	384	if (tmpPtr == 0) {
duke@435	385	HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_thr_iter!", 0);
duke@435	386	}
duke@435	387	env->SetLongField(this_obj, p_td_ta_thr_iter_ID, (jlong)(uintptr_t) tmpPtr);
duke@435	388
duke@435	389	tmpPtr = dlsym(libthread_db_handle, "td_thr_get_info");
duke@435	390	if (tmpPtr == 0) {
duke@435	391	HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_get_info!", 0);
duke@435	392	}
duke@435	393	env->SetLongField(this_obj, p_td_thr_get_info_ID, (jlong)(uintptr_t) tmpPtr);
duke@435	394
duke@435	395	tmpPtr = dlsym(libthread_db_handle, "td_ta_map_id2thr");
duke@435	396	if (tmpPtr == 0) {
duke@435	397	HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_map_id2thr!", 0);
duke@435	398	}
duke@435	399	env->SetLongField(this_obj, p_td_ta_map_id2thr_ID, (jlong)(uintptr_t) tmpPtr);
duke@435	400
duke@435	401	tmpPtr = dlsym(libthread_db_handle, "td_thr_getgregs");
duke@435	402	if (tmpPtr == 0) {
duke@435	403	HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_getgregs!", 0);
duke@435	404	}
duke@435	405	env->SetLongField(this_obj, p_td_thr_getgregs_ID, (jlong)(uintptr_t) tmpPtr);
duke@435	406
duke@435	407	return 1;
duke@435	408	}
duke@435	409
duke@435	410	static int
duke@435	411	fill_thread_list(const td_thrhandle_t *p_td_thragent_t, void* cd) {
duke@435	412	DebuggerWithObject* dbgo = (DebuggerWithObject*) cd;
duke@435	413	JNIEnv* env = dbgo->env;
duke@435	414	jobject this_obj = dbgo->this_obj;
duke@435	415	jobject list = dbgo->obj;
duke@435	416
duke@435	417	td_thrinfo_t thrinfo;
duke@435	418	p_td_thr_get_info_t p_td_thr_get_info = (p_td_thr_get_info_t) env->GetLongField(this_obj, p_td_thr_get_info_ID);
duke@435	419
duke@435	420	if (p_td_thr_get_info(p_td_thragent_t, &thrinfo) != TD_OK)
duke@435	421	return (0);
duke@435	422
duke@435	423	jobject threadProxy = env->CallObjectMethod(this_obj, getThreadForThreadId_ID, (jlong)(uintptr_t) thrinfo.ti_tid);
duke@435	424	CHECK_EXCEPTION_(1);
duke@435	425	env->CallBooleanMethod(list, listAdd_ID, threadProxy);
duke@435	426	CHECK_EXCEPTION_(1);
duke@435	427	return 0;
duke@435	428	}
duke@435	429
duke@435	430	static int
duke@435	431	fill_load_object_list(void *cd, const prmap_t* pmp, const char* obj_name) {
duke@435	432
duke@435	433	if (obj_name) {
duke@435	434	DebuggerWithObject* dbgo = (DebuggerWithObject*) cd;
duke@435	435	JNIEnv* env = dbgo->env;
duke@435	436	jobject this_obj = dbgo->this_obj;
duke@435	437	jobject list = dbgo->obj;
duke@435	438
duke@435	439	jstring objectName = env->NewStringUTF(obj_name);
duke@435	440	CHECK_EXCEPTION_(1);
duke@435	441
duke@435	442	jlong mapSize = (jlong) pmp->pr_size;
duke@435	443	jobject sharedObject = env->CallObjectMethod(this_obj, createLoadObject_ID,
duke@435	444	objectName, mapSize, (jlong)(uintptr_t)pmp->pr_vaddr);
duke@435	445	CHECK_EXCEPTION_(1);
duke@435	446	env->CallBooleanMethod(list, listAdd_ID, sharedObject);
duke@435	447	CHECK_EXCEPTION_(1);
duke@435	448	}
duke@435	449
duke@435	450	return 0;
duke@435	451	}
duke@435	452
duke@435	453	static int
duke@435	454	fill_cframe_list(void *cd, const prgregset_t regs, uint_t argc, const long *argv) {
duke@435	455	DebuggerWith2Objects* dbgo2 = (DebuggerWith2Objects*) cd;
duke@435	456	JNIEnv* env = dbgo2->env;
duke@435	457	jobject this_obj = dbgo2->this_obj;
duke@435	458	jobject curFrame = dbgo2->obj2;
duke@435	459
duke@435	460	jint pcRegIndex = env->GetIntField(this_obj, pcRegIndex_ID);
duke@435	461	jint fpRegIndex = env->GetIntField(this_obj, fpRegIndex_ID);
duke@435	462
duke@435	463	jlong pc = (jlong) (uintptr_t) regs[pcRegIndex];
duke@435	464	jlong fp = (jlong) (uintptr_t) regs[fpRegIndex];
duke@435	465
duke@435	466	dbgo2->obj2 = env->CallObjectMethod(this_obj, createSenderFrame_ID,
duke@435	467	curFrame, pc, fp);
duke@435	468	CHECK_EXCEPTION_(1);
duke@435	469	if (dbgo2->obj == 0) {
duke@435	470	dbgo2->obj = dbgo2->obj2;
duke@435	471	}
duke@435	472	return 0;
duke@435	473	}
duke@435	474
duke@435	475	// part of the class sharing workaround
duke@435	476
duke@435	477	// FIXME: !!HACK ALERT!!
duke@435	478
duke@435	479	// The format of sharing achive file header is needed to read shared heap
duke@435	480	// file mappings. For now, I am hard coding portion of FileMapHeader here.
duke@435	481	// Refer to filemap.hpp.
duke@435	482
duke@435	483	// FileMapHeader describes the shared space data in the file to be
duke@435	484	// mapped. This structure gets written to a file. It is not a class, so
duke@435	485	// that the compilers don't add any compiler-private data to it.
duke@435	486
duke@435	487	// Refer to CompactingPermGenGen::n_regions in compactingPermGenGen.hpp
duke@435	488	const int NUM_SHARED_MAPS = 4;
duke@435	489
duke@435	490	// Refer to FileMapInfo::_current_version in filemap.hpp
duke@435	491	const int CURRENT_ARCHIVE_VERSION = 1;
duke@435	492
duke@435	493	struct FileMapHeader {
duke@435	494	int _magic; // identify file type.
duke@435	495	int _version; // (from enum, above.)
duke@435	496	size_t _alignment; // how shared archive should be aligned
duke@435	497
duke@435	498
duke@435	499	struct space_info {
duke@435	500	int _file_offset; // sizeof(this) rounded to vm page size
duke@435	501	char* _base; // copy-on-write base address
duke@435	502	size_t _capacity; // for validity checking
duke@435	503	size_t _used; // for setting space top on read
duke@435	504
duke@435	505	bool _read_only; // read only space?
duke@435	506	bool _allow_exec; // executable code in space?
duke@435	507
duke@435	508	} _space[NUM_SHARED_MAPS]; // was _space[CompactingPermGenGen::n_regions];
duke@435	509
duke@435	510	// Ignore the rest of the FileMapHeader. We don't need those fields here.
duke@435	511	};
duke@435	512
duke@435	513	static bool
swamyv@964	514	read_jboolean(struct ps_prochandle* ph, psaddr_t addr, jboolean* pvalue) {
swamyv@964	515	jboolean i;
duke@435	516	if (ps_pread(ph, addr, &i, sizeof(i)) == PS_OK) {
duke@435	517	*pvalue = i;
duke@435	518	return true;
duke@435	519	} else {
duke@435	520	return false;
duke@435	521	}
duke@435	522	}
duke@435	523
duke@435	524	static bool
duke@435	525	read_pointer(struct ps_prochandle* ph, psaddr_t addr, uintptr_t* pvalue) {
duke@435	526	uintptr_t uip;
duke@435	527	if (ps_pread(ph, addr, &uip, sizeof(uip)) == PS_OK) {
duke@435	528	*pvalue = uip;
duke@435	529	return true;
duke@435	530	} else {
duke@435	531	return false;
duke@435	532	}
duke@435	533	}
duke@435	534
duke@435	535	static bool
duke@435	536	read_string(struct ps_prochandle* ph, psaddr_t addr, char* buf, size_t size) {
duke@435	537	char ch = ' ';
duke@435	538	size_t i = 0;
duke@435	539
duke@435	540	while (ch != '\0') {
duke@435	541	if (ps_pread(ph, addr, &ch, sizeof(ch)) != PS_OK)
duke@435	542	return false;
duke@435	543
duke@435	544	if (i < size - 1) {
duke@435	545	buf[i] = ch;
duke@435	546	} else { // smaller buffer
duke@435	547	return false;
duke@435	548	}
duke@435	549
duke@435	550	i++; addr++;
duke@435	551	}
duke@435	552
duke@435	553	buf[i] = '\0';
duke@435	554	return true;
duke@435	555	}
duke@435	556
duke@435	557	#define USE_SHARED_SPACES_SYM "UseSharedSpaces"
duke@435	558	// mangled symbol name for Arguments::SharedArchivePath
duke@435	559	#define SHARED_ARCHIVE_PATH_SYM "__1cJArgumentsRSharedArchivePath_"
duke@435	560
duke@435	561	static int
duke@435	562	init_classsharing_workaround(void *cd, const prmap_t* pmap, const char* obj_name) {
duke@435	563	Debugger* dbg = (Debugger*) cd;
duke@435	564	JNIEnv* env = dbg->env;
duke@435	565	jobject this_obj = dbg->this_obj;
duke@435	566	const char* jvm_name = 0;
duke@435	567	if ((jvm_name = strstr(obj_name, "libjvm.so")) != NULL ||
duke@435	568	(jvm_name = strstr(obj_name, "libjvm_g.so")) != NULL) {
duke@435	569	jvm_name = obj_name;
duke@435	570	} else {
duke@435	571	return 0;
duke@435	572	}
duke@435	573
duke@435	574	struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID);
duke@435	575
duke@435	576	// initialize classes[_g].jsa file descriptor field.
duke@435	577	dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, -1);
duke@435	578
duke@435	579	// check whether class sharing is on by reading variable "UseSharedSpaces"
duke@435	580	psaddr_t useSharedSpacesAddr = 0;
duke@435	581	ps_pglobal_lookup(ph, jvm_name, USE_SHARED_SPACES_SYM, &useSharedSpacesAddr);
duke@435	582	if (useSharedSpacesAddr == 0) {
duke@435	583	THROW_NEW_DEBUGGER_EXCEPTION_("can't find 'UseSharedSpaces' flag\n", 1);
duke@435	584	}
duke@435	585
duke@435	586	// read the value of the flag "UseSharedSpaces"
swamyv@964	587	// Since hotspot types are not available to build this library. So
swamyv@964	588	// equivalent type "jboolean" is used to read the value of "UseSharedSpaces"
swamyv@964	589	// which is same as hotspot type "bool".
swamyv@964	590	jboolean value = 0;
swamyv@964	591	if (read_jboolean(ph, useSharedSpacesAddr, &value) != true) {
duke@435	592	THROW_NEW_DEBUGGER_EXCEPTION_("can't read 'UseSharedSpaces' flag", 1);
swamyv@964	593	} else if ((int)value == 0) {
duke@435	594	print_debug("UseSharedSpaces is false, assuming -Xshare:off!\n");
duke@435	595	return 1;
duke@435	596	}
duke@435	597
duke@435	598	char classes_jsa[PATH_MAX];
duke@435	599	psaddr_t sharedArchivePathAddrAddr = 0;
duke@435	600	ps_pglobal_lookup(ph, jvm_name, SHARED_ARCHIVE_PATH_SYM, &sharedArchivePathAddrAddr);
duke@435	601	if (sharedArchivePathAddrAddr == 0) {
duke@435	602	print_debug("can't find symbol 'Arguments::SharedArchivePath'\n");
duke@435	603	THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1);
duke@435	604	}
duke@435	605
duke@435	606	uintptr_t sharedArchivePathAddr = 0;
duke@435	607	if (read_pointer(ph, sharedArchivePathAddrAddr, &sharedArchivePathAddr) != true) {
duke@435	608	print_debug("can't find read pointer 'Arguments::SharedArchivePath'\n");
duke@435	609	THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1);
duke@435	610	}
duke@435	611
duke@435	612	if (read_string(ph, (psaddr_t)sharedArchivePathAddr, classes_jsa, sizeof(classes_jsa)) != true) {
duke@435	613	print_debug("can't find read 'Arguments::SharedArchivePath' value\n");
duke@435	614	THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1);
duke@435	615	}
duke@435	616
duke@435	617	print_debug("looking for %s\n", classes_jsa);
duke@435	618
duke@435	619	// open the classes[_g].jsa
never@1327	620	int fd = libsaproc_open(classes_jsa, O_RDONLY);
duke@435	621	if (fd < 0) {
duke@435	622	char errMsg[ERR_MSG_SIZE];
duke@435	623	sprintf(errMsg, "can't open shared archive file %s", classes_jsa);
duke@435	624	THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1);
duke@435	625	} else {
duke@435	626	print_debug("opened shared archive file %s\n", classes_jsa);
duke@435	627	}
duke@435	628
duke@435	629	// parse classes[_g].jsa
duke@435	630	struct FileMapHeader* pheader = (struct FileMapHeader*) malloc(sizeof(struct FileMapHeader));
duke@435	631	if (pheader == NULL) {
duke@435	632	close(fd);
duke@435	633	THROW_NEW_DEBUGGER_EXCEPTION_("can't allocate memory for shared file map header", 1);
duke@435	634	}
duke@435	635
duke@435	636	memset(pheader, 0, sizeof(struct FileMapHeader));
duke@435	637	// read FileMapHeader
duke@435	638	size_t n = read(fd, pheader, sizeof(struct FileMapHeader));
duke@435	639	if (n != sizeof(struct FileMapHeader)) {
duke@435	640	free(pheader);
duke@435	641	close(fd);
duke@435	642	char errMsg[ERR_MSG_SIZE];
duke@435	643	sprintf(errMsg, "unable to read shared archive file map header from %s", classes_jsa);
duke@435	644	THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1);
duke@435	645	}
duke@435	646
duke@435	647	// check file magic
duke@435	648	if (pheader->_magic != 0xf00baba2) {
duke@435	649	free(pheader);
duke@435	650	close(fd);
duke@435	651	char errMsg[ERR_MSG_SIZE];
duke@435	652	sprintf(errMsg, "%s has bad shared archive magic 0x%x, expecting 0xf00baba2",
duke@435	653	classes_jsa, pheader->_magic);
duke@435	654	THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1);
duke@435	655	}
duke@435	656
duke@435	657	// check version
duke@435	658	if (pheader->_version != CURRENT_ARCHIVE_VERSION) {
duke@435	659	free(pheader);
duke@435	660	close(fd);
duke@435	661	char errMsg[ERR_MSG_SIZE];
duke@435	662	sprintf(errMsg, "%s has wrong shared archive version %d, expecting %d",
duke@435	663	classes_jsa, pheader->_version, CURRENT_ARCHIVE_VERSION);
duke@435	664	THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1);
duke@435	665	}
duke@435	666
duke@435	667	if (_libsaproc_debug) {
duke@435	668	for (int m = 0; m < NUM_SHARED_MAPS; m++) {
duke@435	669	print_debug("shared file offset %d mapped at 0x%lx, size = %ld, read only? = %d\n",
duke@435	670	pheader->_space[m]._file_offset, pheader->_space[m]._base,
duke@435	671	pheader->_space[m]._used, pheader->_space[m]._read_only);
duke@435	672	}
duke@435	673	}
duke@435	674
duke@435	675	// FIXME: For now, omitting other checks such as VM version etc.
duke@435	676
duke@435	677	// store class archive file fd and map header in debugger object fields
duke@435	678	dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, fd);
duke@435	679	dbg->env->SetLongField(this_obj, p_file_map_header_ID, (jlong)(uintptr_t) pheader);
duke@435	680	return 1;
duke@435	681	}
duke@435	682
duke@435	683	} // extern "C"
duke@435	684
duke@435	685	// error messages for proc_arg_grab failure codes. The messages are
duke@435	686	// modified versions of comments against corresponding #defines in
duke@435	687	// libproc.h.
duke@435	688	static const char* proc_arg_grab_errmsgs[] = {
duke@435	689	"",
duke@435	690	/* G_NOPROC */ "No such process",
duke@435	691	/* G_NOCORE */ "No such core file",
duke@435	692	/* G_NOPROCORCORE */ "No such process or core",
duke@435	693	/* G_NOEXEC */ "Cannot locate executable file",
duke@435	694	/* G_ZOMB */ "Zombie processs",
duke@435	695	/* G_PERM */ "No permission to attach",
duke@435	696	/* G_BUSY */ "Another process has already attached",
duke@435	697	/* G_SYS */ "System process - can not attach",
duke@435	698	/* G_SELF */ "Process is self - can't debug myself!",
duke@435	699	/* G_INTR */ "Interrupt received while grabbing",
duke@435	700	/* G_LP64 */ "debuggee is 64 bit, use java -d64 for debugger",
duke@435	701	/* G_FORMAT */ "File is not an ELF format core file - corrupted core?",
duke@435	702	/* G_ELF */ "Libelf error while parsing an ELF file",
duke@435	703	/* G_NOTE */ "Required PT_NOTE Phdr not present - corrupted core?",
duke@435	704	};
duke@435	705
duke@435	706	static void attach_internal(JNIEnv* env, jobject this_obj, jstring cmdLine, jboolean isProcess) {
duke@435	707	jboolean isCopy;
duke@435	708	int gcode;
duke@435	709	const char* cmdLine_cstr = env->GetStringUTFChars(cmdLine, &isCopy);
duke@435	710	CHECK_EXCEPTION;
duke@435	711
duke@435	712	// some older versions of libproc.so crash when trying to attach 32 bit
duke@435	713	// debugger to 64 bit core file. check and throw error.
duke@435	714	#ifndef _LP64
duke@435	715	atoi(cmdLine_cstr);
duke@435	716	if (errno) {
duke@435	717	// core file
duke@435	718	int core_fd;
duke@435	719	if ((core_fd = open64(cmdLine_cstr, O_RDONLY)) >= 0) {
duke@435	720	Elf32_Ehdr e32;
duke@435	721	if (pread64(core_fd, &e32, sizeof (e32), 0) == sizeof (e32) &&
duke@435	722	memcmp(&e32.e_ident[EI_MAG0], ELFMAG, SELFMAG) == 0 &&
duke@435	723	e32.e_type == ET_CORE && e32.e_ident[EI_CLASS] == ELFCLASS64) {
duke@435	724	close(core_fd);
duke@435	725	THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 64 bit, use java -d64 for debugger");
duke@435	726	}
duke@435	727	close(core_fd);
duke@435	728	}
duke@435	729	// all other conditions are handled by libproc.so.
duke@435	730	}
duke@435	731	#endif
duke@435	732
duke@435	733	// connect to process/core
duke@435	734	struct ps_prochandle* ph = proc_arg_grab(cmdLine_cstr, (isProcess? PR_ARG_PIDS : PR_ARG_CORES), PGRAB_FORCE, &gcode);
duke@435	735	env->ReleaseStringUTFChars(cmdLine, cmdLine_cstr);
duke@435	736	if (! ph) {
duke@435	737	if (gcode > 0 && gcode < sizeof(proc_arg_grab_errmsgs)/sizeof(const char*)) {
duke@435	738	char errMsg[ERR_MSG_SIZE];
duke@435	739	sprintf(errMsg, "Attach failed : %s", proc_arg_grab_errmsgs[gcode]);
duke@435	740	THROW_NEW_DEBUGGER_EXCEPTION(errMsg);
duke@435	741	} else {
duke@435	742	if (_libsaproc_debug && gcode == G_STRANGE) {
duke@435	743	perror("libsaproc DEBUG: ");
duke@435	744	}
duke@435	745	if (isProcess) {
duke@435	746	THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to process!");
duke@435	747	} else {
duke@435	748	THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to core file!");
duke@435	749	}
duke@435	750	}
duke@435	751	}
duke@435	752
duke@435	753	// even though libproc.so supports 64 bit debugger and 32 bit debuggee, we don't
duke@435	754	// support such cross-bit-debugging. check for that combination and throw error.
duke@435	755	#ifdef _LP64
duke@435	756	int data_model;
duke@435	757	if (ps_pdmodel(ph, &data_model) != PS_OK) {
duke@435	758	Prelease(ph, PRELEASE_CLEAR);
duke@435	759	THROW_NEW_DEBUGGER_EXCEPTION("can't determine debuggee data model (ILP32? or LP64?)");
duke@435	760	}
duke@435	761	if (data_model == PR_MODEL_ILP32) {
duke@435	762	Prelease(ph, PRELEASE_CLEAR);
duke@435	763	THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 32 bit, use 32 bit java for debugger");
duke@435	764	}
duke@435	765	#endif
duke@435	766
duke@435	767	env->SetLongField(this_obj, p_ps_prochandle_ID, (jlong)(uintptr_t)ph);
duke@435	768
duke@435	769	Debugger dbg;
duke@435	770	dbg.env = env;
duke@435	771	dbg.this_obj = this_obj;
duke@435	772	jthrowable exception = 0;
duke@435	773	if (! isProcess) {
duke@435	774	/*
duke@435	775	* With class sharing, shared perm. gen heap is allocated in with MAP_SHARED|PROT_READ.
duke@435	776	* These pages are mapped from the file "classes[_g].jsa". MAP_SHARED pages are not dumped
duke@435	777	* in Solaris core.To read shared heap pages, we have to read classes[_g].jsa file.
duke@435	778	*/
duke@435	779	Pobject_iter(ph, init_classsharing_workaround, &dbg);
duke@435	780	exception = env->ExceptionOccurred();
duke@435	781	if (exception) {
duke@435	782	env->ExceptionClear();
duke@435	783	detach_internal(env, this_obj);
duke@435	784	env->Throw(exception);
duke@435	785	return;
duke@435	786	}
duke@435	787	}
duke@435	788
duke@435	789	/*
duke@435	790	* Iterate over the process mappings looking
duke@435	791	* for libthread and then dlopen the appropriate
duke@435	792	* libthread_db and get function pointers.
duke@435	793	*/
duke@435	794	Pobject_iter(ph, init_libthread_db_ptrs, &dbg);
duke@435	795	exception = env->ExceptionOccurred();
duke@435	796	if (exception) {
duke@435	797	env->ExceptionClear();
duke@435	798	if (!sa_ignore_threaddb) {
duke@435	799	detach_internal(env, this_obj);
duke@435	800	env->Throw(exception);
duke@435	801	}
duke@435	802	return;
duke@435	803	}
duke@435	804
duke@435	805	// init libthread_db and create thread_db agent
duke@435	806	p_td_init_t p_td_init = (p_td_init_t) env->GetLongField(this_obj, p_td_init_ID);
duke@435	807	if (p_td_init == 0) {
duke@435	808	if (!sa_ignore_threaddb) {
duke@435	809	detach_internal(env, this_obj);
duke@435	810	}
duke@435	811	HANDLE_THREADDB_FAILURE("Did not find libthread in target process/core!");
duke@435	812	}
duke@435	813
duke@435	814	if (p_td_init() != TD_OK) {
duke@435	815	if (!sa_ignore_threaddb) {
duke@435	816	detach_internal(env, this_obj);
duke@435	817	}
duke@435	818	HANDLE_THREADDB_FAILURE("Can't initialize thread_db!");
duke@435	819	}
duke@435	820
duke@435	821	p_td_ta_new_t p_td_ta_new = (p_td_ta_new_t) env->GetLongField(this_obj, p_td_ta_new_ID);
duke@435	822
duke@435	823	td_thragent_t *p_td_thragent_t = 0;
duke@435	824	if (p_td_ta_new(ph, &p_td_thragent_t) != TD_OK) {
duke@435	825	if (!sa_ignore_threaddb) {
duke@435	826	detach_internal(env, this_obj);
duke@435	827	}
duke@435	828	HANDLE_THREADDB_FAILURE("Can't create thread_db agent!");
duke@435	829	}
duke@435	830	env->SetLongField(this_obj, p_td_thragent_t_ID, (jlong)(uintptr_t) p_td_thragent_t);
duke@435	831
duke@435	832	}
duke@435	833
duke@435	834	/*
duke@435	835	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	836	* Method: attach0
duke@435	837	* Signature: (Ljava/lang/String;)V
duke@435	838	* Description: process detach
duke@435	839	*/
duke@435	840	JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2
duke@435	841	(JNIEnv *env, jobject this_obj, jstring pid) {
duke@435	842	attach_internal(env, this_obj, pid, JNI_TRUE);
duke@435	843	}
duke@435	844
duke@435	845	/*
duke@435	846	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	847	* Method: attach0
duke@435	848	* Signature: (Ljava/lang/String;Ljava/lang/String;)V
duke@435	849	* Description: core file detach
duke@435	850	*/
duke@435	851	JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2
duke@435	852	(JNIEnv *env, jobject this_obj, jstring executable, jstring corefile) {
duke@435	853	// ignore executable file name, libproc.so can detect a.out name anyway.
duke@435	854	attach_internal(env, this_obj, corefile, JNI_FALSE);
duke@435	855	}
duke@435	856
duke@435	857
duke@435	858	/*
duke@435	859	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	860	* Method: detach0
duke@435	861	* Signature: ()V
duke@435	862	* Description: process/core file detach
duke@435	863	*/
duke@435	864	JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_detach0
duke@435	865	(JNIEnv *env, jobject this_obj) {
duke@435	866	detach_internal(env, this_obj);
duke@435	867	}
duke@435	868
duke@435	869	/*
duke@435	870	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	871	* Method: getRemoteProcessAddressSize0
duke@435	872	* Signature: ()I
duke@435	873	* Description: get process/core address size
duke@435	874	*/
duke@435	875	JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getRemoteProcessAddressSize0
duke@435	876	(JNIEnv *env, jobject this_obj) {
duke@435	877	jlong p_ps_prochandle;
duke@435	878	p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
duke@435	879	int data_model = PR_MODEL_ILP32;
duke@435	880	ps_pdmodel((struct ps_prochandle*) p_ps_prochandle, &data_model);
duke@435	881	print_debug("debuggee is %d bit\n", data_model == PR_MODEL_ILP32? 32 : 64);
duke@435	882	return (jint) data_model == PR_MODEL_ILP32? 32 : 64;
duke@435	883	}
duke@435	884
duke@435	885	/*
duke@435	886	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	887	* Method: getPageSize0
duke@435	888	* Signature: ()I
duke@435	889	* Description: get process/core page size
duke@435	890	*/
duke@435	891	JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getPageSize0
duke@435	892	(JNIEnv *env, jobject this_obj) {
duke@435	893
duke@435	894	/*
duke@435	895	We are not yet attached to a java process or core file. getPageSize is called from
duke@435	896	the constructor of ProcDebuggerLocal. The following won't work!
duke@435	897
duke@435	898	jlong p_ps_prochandle;
duke@435	899	p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
duke@435	900	CHECK_EXCEPTION_(-1);
duke@435	901	struct ps_prochandle* prochandle = (struct ps_prochandle*) p_ps_prochandle;
duke@435	902	return (Pstate(prochandle) == PS_DEAD) ? Pgetauxval(prochandle, AT_PAGESZ)
duke@435	903	: getpagesize();
duke@435	904
duke@435	905	So even though core may have been generated with a different page size settings, for now
duke@435	906	call getpagesize.
duke@435	907	*/
duke@435	908
duke@435	909	return getpagesize();
duke@435	910	}
duke@435	911
duke@435	912	/*
duke@435	913	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	914	* Method: getThreadIntegerRegisterSet0
duke@435	915	* Signature: (J)[J
duke@435	916	* Description: get gregset for a given thread specified by thread id
duke@435	917	*/
duke@435	918	JNIEXPORT jlongArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getThreadIntegerRegisterSet0
duke@435	919	(JNIEnv *env, jobject this_obj, jlong tid) {
duke@435	920	// map the thread id to thread handle
duke@435	921	p_td_ta_map_id2thr_t p_td_ta_map_id2thr = (p_td_ta_map_id2thr_t) env->GetLongField(this_obj, p_td_ta_map_id2thr_ID);
duke@435	922
duke@435	923	td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID);
duke@435	924	if (p_td_thragent_t == 0) {
duke@435	925	return 0;
duke@435	926	}
duke@435	927
duke@435	928	td_thrhandle_t thr_handle;
duke@435	929	if (p_td_ta_map_id2thr(p_td_thragent_t, (thread_t) tid, &thr_handle) != TD_OK) {
duke@435	930	THROW_NEW_DEBUGGER_EXCEPTION_("can't map thread id to thread handle!", 0);
duke@435	931	}
duke@435	932
duke@435	933	p_td_thr_getgregs_t p_td_thr_getgregs = (p_td_thr_getgregs_t) env->GetLongField(this_obj, p_td_thr_getgregs_ID);
duke@435	934	prgregset_t gregs;
duke@435	935	p_td_thr_getgregs(&thr_handle, gregs);
duke@435	936
duke@435	937	jlongArray res = env->NewLongArray(NPRGREG);
duke@435	938	CHECK_EXCEPTION_(0);
duke@435	939	jboolean isCopy;
duke@435	940	jlong* ptr = env->GetLongArrayElements(res, &isCopy);
duke@435	941	for (int i = 0; i < NPRGREG; i++) {
duke@435	942	ptr[i] = (jlong) (uintptr_t) gregs[i];
duke@435	943	}
duke@435	944	env->ReleaseLongArrayElements(res, ptr, JNI_COMMIT);
duke@435	945	return res;
duke@435	946	}
duke@435	947
duke@435	948	/*
duke@435	949	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	950	* Method: fillThreadList0
duke@435	951	* Signature: (Ljava/util/List;)V
duke@435	952	* Description: fills thread list of the debuggee process/core
duke@435	953	*/
duke@435	954	JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillThreadList0
duke@435	955	(JNIEnv *env, jobject this_obj, jobject list) {
duke@435	956
duke@435	957	td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID);
duke@435	958	if (p_td_thragent_t == 0) {
duke@435	959	return;
duke@435	960	}
duke@435	961
duke@435	962	p_td_ta_thr_iter_t p_td_ta_thr_iter = (p_td_ta_thr_iter_t) env->GetLongField(this_obj, p_td_ta_thr_iter_ID);
duke@435	963
duke@435	964	DebuggerWithObject dbgo;
duke@435	965	dbgo.env = env;
duke@435	966	dbgo.this_obj = this_obj;
duke@435	967	dbgo.obj = list;
duke@435	968
duke@435	969	p_td_ta_thr_iter(p_td_thragent_t, fill_thread_list, &dbgo,
duke@435	970	TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS);
duke@435	971	}
duke@435	972
duke@435	973	/*
duke@435	974	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	975	* Method: fillCFrameList0
duke@435	976	* Signature: ([J)Lsun/jvm/hotspot/debugger/proc/ProcCFrame;
duke@435	977	* Description: fills CFrame list for a given thread
duke@435	978	*/
duke@435	979	JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillCFrameList0
duke@435	980	(JNIEnv *env, jobject this_obj, jlongArray regsArray) {
duke@435	981	jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
duke@435	982
duke@435	983	DebuggerWith2Objects dbgo2;
duke@435	984	dbgo2.env = env;
duke@435	985	dbgo2.this_obj = this_obj;
duke@435	986	dbgo2.obj = NULL;
duke@435	987	dbgo2.obj2 = NULL;
duke@435	988
duke@435	989	jboolean isCopy;
duke@435	990	jlong* ptr = env->GetLongArrayElements(regsArray, &isCopy);
duke@435	991	CHECK_EXCEPTION_(0);
duke@435	992
duke@435	993	prgregset_t gregs;
duke@435	994	for (int i = 0; i < NPRGREG; i++) {
duke@435	995	gregs[i] = (uintptr_t) ptr[i];
duke@435	996	}
duke@435	997
duke@435	998	env->ReleaseLongArrayElements(regsArray, ptr, JNI_ABORT);
duke@435	999	CHECK_EXCEPTION_(0);
duke@435	1000	Pstack_iter((struct ps_prochandle*) p_ps_prochandle, gregs, fill_cframe_list, &dbgo2);
duke@435	1001	return dbgo2.obj;
duke@435	1002	}
duke@435	1003
duke@435	1004	/*
duke@435	1005	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	1006	* Method: fillLoadObjectList0
duke@435	1007	* Signature: (Ljava/util/List;)V
duke@435	1008	* Description: fills shared objects of the debuggee process/core
duke@435	1009	*/
duke@435	1010	JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillLoadObjectList0
duke@435	1011	(JNIEnv *env, jobject this_obj, jobject list) {
duke@435	1012	DebuggerWithObject dbgo;
duke@435	1013	dbgo.env = env;
duke@435	1014	dbgo.this_obj = this_obj;
duke@435	1015	dbgo.obj = list;
duke@435	1016
duke@435	1017	jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
duke@435	1018	Pobject_iter((struct ps_prochandle*) p_ps_prochandle, fill_load_object_list, &dbgo);
duke@435	1019	}
duke@435	1020
duke@435	1021	/*
duke@435	1022	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	1023	* Method: readBytesFromProcess0
duke@435	1024	* Signature: (JJ)[B
duke@435	1025	* Description: read bytes from debuggee process/core
duke@435	1026	*/
duke@435	1027	JNIEXPORT jbyteArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_readBytesFromProcess0
duke@435	1028	(JNIEnv *env, jobject this_obj, jlong address, jlong numBytes) {
duke@435	1029
duke@435	1030	jbyteArray array = env->NewByteArray(numBytes);
duke@435	1031	CHECK_EXCEPTION_(0);
duke@435	1032	jboolean isCopy;
duke@435	1033	jbyte* bufPtr = env->GetByteArrayElements(array, &isCopy);
duke@435	1034	CHECK_EXCEPTION_(0);
duke@435	1035
duke@435	1036	jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
duke@435	1037	ps_err_e ret = ps_pread((struct ps_prochandle*) p_ps_prochandle,
duke@435	1038	(psaddr_t)address, bufPtr, (size_t)numBytes);
duke@435	1039
duke@435	1040	if (ret != PS_OK) {
duke@435	1041	// part of the class sharing workaround. try shared heap area
duke@435	1042	int classes_jsa_fd = env->GetIntField(this_obj, classes_jsa_fd_ID);
duke@435	1043	if (classes_jsa_fd != -1 && address != (jlong)0) {
duke@435	1044	print_debug("read failed at 0x%lx, attempting shared heap area\n", (long) address);
duke@435	1045
duke@435	1046	struct FileMapHeader* pheader = (struct FileMapHeader*) env->GetLongField(this_obj, p_file_map_header_ID);
duke@435	1047	// walk through the shared mappings -- we just have 4 of them.
duke@435	1048	// so, linear walking is okay.
duke@435	1049	for (int m = 0; m < NUM_SHARED_MAPS; m++) {
duke@435	1050
duke@435	1051	// We can skip the non-read-only maps. These are mapped as MAP_PRIVATE
duke@435	1052	// and hence will be read by libproc. Besides, the file copy may be
duke@435	1053	// stale because the process might have modified those pages.
duke@435	1054	if (pheader->_space[m]._read_only) {
duke@435	1055	jlong baseAddress = (jlong) (uintptr_t) pheader->_space[m]._base;
duke@435	1056	size_t usedSize = pheader->_space[m]._used;
duke@435	1057	if (address >= baseAddress && address < (baseAddress + usedSize)) {
duke@435	1058	// the given address falls in this shared heap area
duke@435	1059	print_debug("found shared map at 0x%lx\n", (long) baseAddress);
duke@435	1060
duke@435	1061
duke@435	1062	// If more data is asked than actually mapped from file, we need to zero fill
duke@435	1063	// till the end-of-page boundary. But, java array new does that for us. we just
duke@435	1064	// need to read as much as data available.
duke@435	1065
duke@435	1066	#define MIN2(x, y) (((x) < (y))? (x) : (y))
duke@435	1067
duke@435	1068	jlong diff = address - baseAddress;
duke@435	1069	jlong bytesToRead = MIN2(numBytes, usedSize - diff);
duke@435	1070	off_t offset = pheader->_space[m]._file_offset + off_t(diff);
duke@435	1071	ssize_t bytesRead = pread(classes_jsa_fd, bufPtr, bytesToRead, offset);
duke@435	1072	if (bytesRead != bytesToRead) {
duke@435	1073	env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT);
duke@435	1074	print_debug("shared map read failed\n");
duke@435	1075	return jbyteArray(0);
duke@435	1076	} else {
duke@435	1077	print_debug("shared map read succeeded\n");
duke@435	1078	env->ReleaseByteArrayElements(array, bufPtr, 0);
duke@435	1079	return array;
duke@435	1080	}
duke@435	1081	} // is in current map
duke@435	1082	} // is read only map
duke@435	1083	} // for shared maps
duke@435	1084	} // classes_jsa_fd != -1
duke@435	1085	env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT);
duke@435	1086	return jbyteArray(0);
duke@435	1087	} else {
duke@435	1088	env->ReleaseByteArrayElements(array, bufPtr, 0);
duke@435	1089	return array;
duke@435	1090	}
duke@435	1091	}
duke@435	1092
duke@435	1093	/*
duke@435	1094	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	1095	* Method: writeBytesToProcess0
duke@435	1096	* Signature: (JJ[B)V
duke@435	1097	* Description: write bytes into debugger process
duke@435	1098	*/
duke@435	1099	JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_writeBytesToProcess0
duke@435	1100	(JNIEnv *env, jobject this_obj, jlong address, jlong numBytes, jbyteArray data) {
duke@435	1101	jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
duke@435	1102	jboolean isCopy;
duke@435	1103	jbyte* ptr = env->GetByteArrayElements(data, &isCopy);
duke@435	1104	CHECK_EXCEPTION;
duke@435	1105
duke@435	1106	if (ps_pwrite((struct ps_prochandle*) p_ps_prochandle, address, ptr, numBytes) != PS_OK) {
duke@435	1107	env->ReleaseByteArrayElements(data, ptr, JNI_ABORT);
duke@435	1108	THROW_NEW_DEBUGGER_EXCEPTION("Process write failed!");
duke@435	1109	}
duke@435	1110
duke@435	1111	env->ReleaseByteArrayElements(data, ptr, JNI_ABORT);
duke@435	1112	}
duke@435	1113
duke@435	1114	/*
duke@435	1115	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	1116	* Method: suspend0
duke@435	1117	* Signature: ()V
duke@435	1118	*/
duke@435	1119	JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_suspend0
duke@435	1120	(JNIEnv *env, jobject this_obj) {
duke@435	1121	jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
duke@435	1122	// for now don't check return value. revisit this again.
duke@435	1123	Pstop((struct ps_prochandle*) p_ps_prochandle, 1000);
duke@435	1124	}
duke@435	1125
duke@435	1126	/*
duke@435	1127	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	1128	* Method: resume0
duke@435	1129	* Signature: ()V
duke@435	1130	*/
duke@435	1131	JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_resume0
duke@435	1132	(JNIEnv *env, jobject this_obj) {
duke@435	1133	jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
duke@435	1134	// for now don't check return value. revisit this again.
duke@435	1135	Psetrun((struct ps_prochandle*) p_ps_prochandle, 0, PRCFAULT|PRSTOP);
duke@435	1136	}
duke@435	1137
duke@435	1138	/*
duke@435	1139	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	1140	* Method: lookupByName0
duke@435	1141	* Signature: (Ljava/lang/String;Ljava/lang/String;)J
duke@435	1142	* Description: symbol lookup by name
duke@435	1143	*/
duke@435	1144	JNIEXPORT jlong JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByName0
duke@435	1145	(JNIEnv *env, jobject this_obj, jstring objectName, jstring symbolName) {
duke@435	1146	jlong p_ps_prochandle;
duke@435	1147	p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
duke@435	1148
duke@435	1149	jboolean isCopy;
duke@435	1150	const char* objectName_cstr = NULL;
duke@435	1151	if (objectName != NULL) {
duke@435	1152	objectName_cstr = env->GetStringUTFChars(objectName, &isCopy);
duke@435	1153	CHECK_EXCEPTION_(0);
duke@435	1154	} else {
duke@435	1155	objectName_cstr = PR_OBJ_EVERY;
duke@435	1156	}
duke@435	1157
duke@435	1158	const char* symbolName_cstr = env->GetStringUTFChars(symbolName, &isCopy);
duke@435	1159	CHECK_EXCEPTION_(0);
duke@435	1160
duke@435	1161	psaddr_t symbol_addr = (psaddr_t) 0;
duke@435	1162	ps_pglobal_lookup((struct ps_prochandle*) p_ps_prochandle, objectName_cstr,
duke@435	1163	symbolName_cstr, &symbol_addr);
duke@435	1164
duke@435	1165	if (symbol_addr == 0) {
duke@435	1166	print_debug("lookup for %s in %s failed\n", symbolName_cstr, objectName_cstr);
duke@435	1167	}
duke@435	1168
duke@435	1169	if (objectName_cstr != PR_OBJ_EVERY) {
duke@435	1170	env->ReleaseStringUTFChars(objectName, objectName_cstr);
duke@435	1171	}
duke@435	1172	env->ReleaseStringUTFChars(symbolName, symbolName_cstr);
duke@435	1173	return (jlong) (uintptr_t) symbol_addr;
duke@435	1174	}
duke@435	1175
duke@435	1176	/*
duke@435	1177	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	1178	* Method: lookupByAddress0
duke@435	1179	* Signature: (J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;
duke@435	1180	* Description: lookup symbol name for a given address
duke@435	1181	*/
duke@435	1182	JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByAddress0
duke@435	1183	(JNIEnv *env, jobject this_obj, jlong address) {
duke@435	1184	jlong p_ps_prochandle;
duke@435	1185	p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
duke@435	1186
duke@435	1187	char nameBuf[SYMBOL_BUF_SIZE + 1];
duke@435	1188	GElf_Sym sym;
duke@435	1189	int res = Plookup_by_addr((struct ps_prochandle*) p_ps_prochandle, (uintptr_t) address,
duke@435	1190	nameBuf, sizeof(nameBuf), &sym);
duke@435	1191	if (res != 0) { // failed
duke@435	1192	return 0;
duke@435	1193	}
duke@435	1194
duke@435	1195	jstring resSym = env->NewStringUTF(nameBuf);
duke@435	1196	CHECK_EXCEPTION_(0);
duke@435	1197
duke@435	1198	return env->CallObjectMethod(this_obj, createClosestSymbol_ID, resSym, (address - sym.st_value));
duke@435	1199	}
duke@435	1200
duke@435	1201	/*
duke@435	1202	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	1203	* Method: demangle0
duke@435	1204	* Signature: (Ljava/lang/String;)Ljava/lang/String;
duke@435	1205	*/
duke@435	1206	JNIEXPORT jstring JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_demangle0
duke@435	1207	(JNIEnv *env, jobject this_object, jstring name) {
duke@435	1208	jboolean isCopy;
duke@435	1209	const char* ptr = env->GetStringUTFChars(name, &isCopy);
duke@435	1210	char buf[2*SYMBOL_BUF_SIZE + 1];
duke@435	1211	jstring res = 0;
duke@435	1212	if (cplus_demangle((char*) ptr, buf, sizeof(buf)) != DEMANGLE_ESPACE) {
duke@435	1213	res = env->NewStringUTF(buf);
duke@435	1214	} else {
duke@435	1215	res = name;
duke@435	1216	}
duke@435	1217	env->ReleaseStringUTFChars(name, ptr);
duke@435	1218	return res;
duke@435	1219	}
duke@435	1220
duke@435	1221	/*
duke@435	1222	* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
duke@435	1223	* Method: initIDs
duke@435	1224	* Signature: ()V
duke@435	1225	* Description: get JNI ids for fields and methods of ProcDebuggerLocal class
duke@435	1226	*/
duke@435	1227	JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_initIDs
duke@435	1228	(JNIEnv *env, jclass clazz) {
duke@435	1229	_libsaproc_debug = getenv("LIBSAPROC_DEBUG") != NULL;
duke@435	1230	if (_libsaproc_debug) {
duke@435	1231	// propagate debug mode to libproc.so
duke@435	1232	static const char* var = "LIBPROC_DEBUG=1";
duke@435	1233	putenv((char*)var);
duke@435	1234	}
duke@435	1235
duke@435	1236	void* libproc_handle = dlopen("libproc.so", RTLD_LAZY | RTLD_GLOBAL);
duke@435	1237	if (libproc_handle == 0)
duke@435	1238	THROW_NEW_DEBUGGER_EXCEPTION("can't load libproc.so, if you are using Solaris 5.7 or below, copy libproc.so from 5.8!");
duke@435	1239
duke@435	1240	p_ps_prochandle_ID = env->GetFieldID(clazz, "p_ps_prochandle", "J");
duke@435	1241	CHECK_EXCEPTION;
duke@435	1242
duke@435	1243	libthread_db_handle_ID = env->GetFieldID(clazz, "libthread_db_handle", "J");
duke@435	1244	CHECK_EXCEPTION;
duke@435	1245
duke@435	1246	p_td_thragent_t_ID = env->GetFieldID(clazz, "p_td_thragent_t", "J");
duke@435	1247	CHECK_EXCEPTION;
duke@435	1248
duke@435	1249	p_td_init_ID = env->GetFieldID(clazz, "p_td_init", "J");
duke@435	1250	CHECK_EXCEPTION;
duke@435	1251
duke@435	1252	p_td_ta_new_ID = env->GetFieldID(clazz, "p_td_ta_new", "J");
duke@435	1253	CHECK_EXCEPTION;
duke@435	1254
duke@435	1255	p_td_ta_delete_ID = env->GetFieldID(clazz, "p_td_ta_delete", "J");
duke@435	1256	CHECK_EXCEPTION;
duke@435	1257
duke@435	1258	p_td_ta_thr_iter_ID = env->GetFieldID(clazz, "p_td_ta_thr_iter", "J");
duke@435	1259	CHECK_EXCEPTION;
duke@435	1260
duke@435	1261	p_td_thr_get_info_ID = env->GetFieldID(clazz, "p_td_thr_get_info", "J");
duke@435	1262	CHECK_EXCEPTION;
duke@435	1263
duke@435	1264	p_td_ta_map_id2thr_ID = env->GetFieldID(clazz, "p_td_ta_map_id2thr", "J");
duke@435	1265	CHECK_EXCEPTION;
duke@435	1266
duke@435	1267	p_td_thr_getgregs_ID = env->GetFieldID(clazz, "p_td_thr_getgregs", "J");
duke@435	1268	CHECK_EXCEPTION;
duke@435	1269
duke@435	1270	getThreadForThreadId_ID = env->GetMethodID(clazz,
duke@435	1271	"getThreadForThreadId", "(J)Lsun/jvm/hotspot/debugger/ThreadProxy;");
duke@435	1272	CHECK_EXCEPTION;
duke@435	1273
duke@435	1274	pcRegIndex_ID = env->GetFieldID(clazz, "pcRegIndex", "I");
duke@435	1275	CHECK_EXCEPTION;
duke@435	1276
duke@435	1277	fpRegIndex_ID = env->GetFieldID(clazz, "fpRegIndex", "I");
duke@435	1278	CHECK_EXCEPTION;
duke@435	1279
duke@435	1280	createSenderFrame_ID = env->GetMethodID(clazz,
duke@435	1281	"createSenderFrame", "(Lsun/jvm/hotspot/debugger/proc/ProcCFrame;JJ)Lsun/jvm/hotspot/debugger/proc/ProcCFrame;");
duke@435	1282	CHECK_EXCEPTION;
duke@435	1283
duke@435	1284	createLoadObject_ID = env->GetMethodID(clazz,
duke@435	1285	"createLoadObject", "(Ljava/lang/String;JJ)Lsun/jvm/hotspot/debugger/cdbg/LoadObject;");
duke@435	1286	CHECK_EXCEPTION;
duke@435	1287
duke@435	1288	createClosestSymbol_ID = env->GetMethodID(clazz,
duke@435	1289	"createClosestSymbol", "(Ljava/lang/String;J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;");
duke@435	1290	CHECK_EXCEPTION;
duke@435	1291
duke@435	1292	listAdd_ID = env->GetMethodID(env->FindClass("java/util/List"), "add", "(Ljava/lang/Object;)Z");
duke@435	1293	CHECK_EXCEPTION;
duke@435	1294
duke@435	1295	// part of the class sharing workaround
duke@435	1296	classes_jsa_fd_ID = env->GetFieldID(clazz, "classes_jsa_fd", "I");
duke@435	1297	CHECK_EXCEPTION;
duke@435	1298	p_file_map_header_ID = env->GetFieldID(clazz, "p_file_map_header", "J");
duke@435	1299	CHECK_EXCEPTION;
duke@435	1300	}