void
sol_thread_new_objfile (struct objfile *objfile)
{
td_err_e val;
if (!objfile)
{
sol_thread_active = 0;
goto quit;
}
/* don't do anything if init failed to resolve the libthread_db library */
if (!procfs_suppress_run)
goto quit;
/* Now, initialize the thread debugging library. This needs to be done after
the shared libraries are located because it needs information from the
user's thread library. */
val = p_td_init ();
if (val != TD_OK)
{
warning ("sol_thread_new_objfile: td_init: %s", td_err_string (val));
goto quit;
}
val = p_td_ta_new (&main_ph, &main_ta);
if (val == TD_NOLIBTHREAD)
goto quit;
else if (val != TD_OK)
{
warning ("sol_thread_new_objfile: td_ta_new: %s", td_err_string (val));
goto quit;
}
sol_thread_active = 1;
quit:
/* Call predecessor on chain, if any. */
if (target_new_objfile_chain)
target_new_objfile_chain (objfile);
}
static void attach_internal(JNIEnv* env, jobject this_obj, jstring cmdLine, jboolean isProcess) {
jboolean isCopy;
int gcode;
const char* cmdLine_cstr = env->GetStringUTFChars(cmdLine, &isCopy);
CHECK_EXCEPTION;
// some older versions of libproc.so crash when trying to attach 32 bit
// debugger to 64 bit core file. check and throw error.
#ifndef _LP64
atoi(cmdLine_cstr);
if (errno) {
// core file
int core_fd;
if ((core_fd = open64(cmdLine_cstr, O_RDONLY)) >= 0) {
Elf32_Ehdr e32;
if (pread64(core_fd, &e32, sizeof (e32), 0) == sizeof (e32) &&
memcmp(&e32.e_ident[EI_MAG0], ELFMAG, SELFMAG) == 0 &&
e32.e_type == ET_CORE && e32.e_ident[EI_CLASS] == ELFCLASS64) {
close(core_fd);
THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 64 bit, use java -d64 for debugger");
}
close(core_fd);
}
// all other conditions are handled by libproc.so.
}
#endif
// connect to process/core
ps_prochandle_t* ph = proc_arg_grab(cmdLine_cstr, (isProcess? PR_ARG_PIDS : PR_ARG_CORES), PGRAB_FORCE, &gcode, NULL);
env->ReleaseStringUTFChars(cmdLine, cmdLine_cstr);
if (! ph) {
if (gcode > 0 && gcode < sizeof(proc_arg_grab_errmsgs)/sizeof(const char*)) {
char errMsg[ERR_MSG_SIZE];
sprintf(errMsg, "Attach failed : %s", proc_arg_grab_errmsgs[gcode]);
THROW_NEW_DEBUGGER_EXCEPTION(errMsg);
} else {
if (_libsaproc_debug && gcode == G_STRANGE) {
perror("libsaproc DEBUG: ");
}
if (isProcess) {
THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to process!");
} else {
THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to core file!");
}
}
}
// even though libproc.so supports 64 bit debugger and 32 bit debuggee, we don't
// support such cross-bit-debugging. check for that combination and throw error.
#ifdef _LP64
int data_model;
if (ps_pdmodel(ph, &data_model) != PS_OK) {
Prelease(ph, PRELEASE_CLEAR);
THROW_NEW_DEBUGGER_EXCEPTION("can't determine debuggee data model (ILP32? or LP64?)");
}
if (data_model == PR_MODEL_ILP32) {
Prelease(ph, PRELEASE_CLEAR);
THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 32 bit, use 32 bit java for debugger");
}
#endif
env->SetLongField(this_obj, p_ps_prochandle_ID, (jlong)(uintptr_t)ph);
Debugger dbg;
dbg.env = env;
dbg.this_obj = this_obj;
jthrowable exception = 0;
if (! isProcess) {
/*
* With class sharing, shared perm. gen heap is allocated in with MAP_SHARED|PROT_READ.
* These pages are mapped from the file "classes.jsa". MAP_SHARED pages are not dumped
* in Solaris core.To read shared heap pages, we have to read classes.jsa file.
*/
Pobject_iter(ph, init_classsharing_workaround, &dbg);
exception = env->ExceptionOccurred();
if (exception) {
env->ExceptionClear();
detach_internal(env, this_obj);
env->Throw(exception);
return;
}
}
/*
* Iterate over the process mappings looking
* for libthread and then dlopen the appropriate
* libthread_db and get function pointers.
*/
Pobject_iter(ph, init_libthread_db_ptrs, &dbg);
exception = env->ExceptionOccurred();
if (exception) {
env->ExceptionClear();
if (!sa_ignore_threaddb) {
detach_internal(env, this_obj);
env->Throw(exception);
}
return;
}
// init libthread_db and create thread_db agent
p_td_init_t p_td_init = (p_td_init_t) env->GetLongField(this_obj, p_td_init_ID);
if (p_td_init == 0) {
if (!sa_ignore_threaddb) {
detach_internal(env, this_obj);
}
HANDLE_THREADDB_FAILURE("Did not find libthread in target process/core!");
}
if (p_td_init() != TD_OK) {
if (!sa_ignore_threaddb) {
detach_internal(env, this_obj);
}
HANDLE_THREADDB_FAILURE("Can't initialize thread_db!");
}
p_td_ta_new_t p_td_ta_new = (p_td_ta_new_t) env->GetLongField(this_obj, p_td_ta_new_ID);
td_thragent_t *p_td_thragent_t = 0;
if (p_td_ta_new(ph, &p_td_thragent_t) != TD_OK) {
if (!sa_ignore_threaddb) {
detach_internal(env, this_obj);
}
HANDLE_THREADDB_FAILURE("Can't create thread_db agent!");
}
env->SetLongField(this_obj, p_td_thragent_t_ID, (jlong)(uintptr_t) p_td_thragent_t);
}
/*
* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
* Method: attach0
* Signature: (Ljava/lang/String;)V
*/
JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0
(JNIEnv *env, jobject this_obj, jstring cmdLine) {
jboolean isCopy;
int gcode;
const char* cmdLine_cstr = env->GetStringUTFChars(cmdLine, &isCopy);
CHECK_EXCEPTION;
struct ps_prochandle* Pr = proc_arg_grab(cmdLine_cstr, PR_ARG_ANY, PGRAB_FORCE, &gcode);
env->ReleaseStringUTFChars(cmdLine, cmdLine_cstr);
if(! Pr)
THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to process/core file!");
env->SetLongField(this_obj, ps_prochandle_ptr_ID, (jlong) Pr);
// initialize libthread_db pointers
/*
* Iterate over the process mappings looking
* for libthread and then dlopen the appropriate
* libthread_db and get pointers to functions.
*/
Debugger dbg;
dbg.env = env;
dbg.obj = this_obj;
(void) Pobject_iter(Pr, object_iter, &dbg);
CHECK_EXCEPTION;
// get the user level threads info
td_thragent_t *Tap = 0;
p_td_init_t p_td_init = (p_td_init_t) env->GetLongField(this_obj, p_td_init_ID);
if (p_td_init == 0)
return;
p_td_ta_new_t p_td_ta_new = (p_td_ta_new_t) env->GetLongField(this_obj, p_td_ta_new_ID);
if (p_td_init() != TD_OK)
THROW_NEW_DEBUGGER_EXCEPTION("Can't initialize thread_db!");
if (p_td_ta_new(Pr, &Tap) != TD_OK)
THROW_NEW_DEBUGGER_EXCEPTION("Can't create thread_db agent!");
/*
* Iterate over all threads, calling:
* thr_stack(td_thrhandle_t *Thp, NULL);
* for each one to generate the list of threads.
*/
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);
(void) p_td_ta_thr_iter(Tap, thr_stack, &dbg,
TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY,
TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS);
CHECK_EXCEPTION;
p_td_ta_delete_t p_td_ta_delete = (p_td_ta_delete_t)
env->GetLongField(this_obj, p_td_ta_delete_ID);
(void) p_td_ta_delete(Tap);
// Part of workaround for 4705086.
/*
* iterate over maps of the process/core to get first
* libjvm[_g].so mapping.
*/
Pmapping_iter(Pr, iterate_map, &dbg);
CHECK_EXCEPTION;
/*
* Get libjvm[_g].so text size. First location after the end of text segment
* is marked by the global reserved symbol '_etext' in any ELF file.
* Please refer to page 53 of "Linkers and Libraries Guide - 816-0559".
*/
psaddr_t etext_addr;
if (ps_pglobal_lookup(Pr, "libjvm.so", "_etext", &etext_addr) != PS_OK) {
// try the debug version
if (ps_pglobal_lookup(Pr, "libjvm_g.so", "_etext", &etext_addr) != PS_OK)
THROW_NEW_DEBUGGER_EXCEPTION("Can't get end of text address of libjvm!");
}
// now calculate and set libjvm text size.
jlong libjvm_text_start = env->GetLongField(this_obj, libjvm_text_start_ID);
env->SetLongField(this_obj, libjvm_text_size_ID, (jlong) (etext_addr - libjvm_text_start));
}