jdk8-mips64-public/hotspot: agent/src/os/bsd/MacosxDebuggerLocal.m@0e1aa319e805 (annotated)

agent/src/os/bsd/MacosxDebuggerLocal.m@0e1aa319e805 (annotated)

agent/src/os/bsd/MacosxDebuggerLocal.m

Fri, 13 Jun 2014 18:04:49 -0700

author: ddehaven
date: Fri, 13 Jun 2014 18:04:49 -0700
changeset 7562: 0e1aa319e805
parent 6437: f2294a37e723
child 7994: 04ff2f6cd0eb
permissions: -rw-r--r--

8043340: [macosx] Fix hard-wired paths to JavaVM.framework
Summary: Build system tweaks to allow building on OS X 10.9 and later
Reviewed-by: erikj, dholmes

 /*
  * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include <objc/objc-runtime.h>
 #import <Foundation/Foundation.h>
 #import <JavaNativeFoundation/JavaNativeFoundation.h>
 #include <jni.h>
 #import <mach/mach.h>
 #import <mach/mach_types.h>
 #import <sys/sysctl.h>
 #import <stdio.h>
 #import <stdarg.h>
 #import <stdlib.h>
 #import <strings.h>
 #import <dlfcn.h>
 #import <limits.h>
 #import <errno.h>
 #import <sys/types.h>
 #import <sys/ptrace.h>
 #include "libproc_impl.h"
 #define UNSUPPORTED_ARCH "Unsupported architecture!"
 #if defined(x86_64) && !defined(amd64)
 #define amd64 1
 #endif
 #if amd64
 #include "sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext.h"
 #else
 #error UNSUPPORTED_ARCH
 #endif
 static jfieldID symbolicatorID = 0; // set in _init0
 static jfieldID taskID = 0; // set in _init0
 static jfieldID p_ps_prochandle_ID = 0;
 static jfieldID loadObjectList_ID = 0;
 static jmethodID listAdd_ID = 0;
 static jmethodID createClosestSymbol_ID = 0;
 static jmethodID createLoadObject_ID = 0;
 static jmethodID getJavaThreadsInfo_ID = 0;
 // indicator if thread id (lwpid_t) was set
 static bool _threads_filled = false;
 static void putSymbolicator(JNIEnv *env, jobject this_obj, id symbolicator) {
   (*env)->SetLongField(env, this_obj, symbolicatorID, (jlong)(intptr_t)symbolicator);
 }
 static id getSymbolicator(JNIEnv *env, jobject this_obj) {
   jlong ptr = (*env)->GetLongField(env, this_obj, symbolicatorID);
   return (id)(intptr_t)ptr;
 }
 static void putTask(JNIEnv *env, jobject this_obj, task_t task) {
   (*env)->SetLongField(env, this_obj, taskID, (jlong)task);
 }
 static task_t getTask(JNIEnv *env, jobject this_obj) {
   jlong ptr = (*env)->GetLongField(env, this_obj, taskID);
   return (task_t)ptr;
 }
 #define CHECK_EXCEPTION_(value) if ((*env)->ExceptionOccurred(env)) { return value; }
 #define CHECK_EXCEPTION if ((*env)->ExceptionOccurred(env)) { return;}
 #define THROW_NEW_DEBUGGER_EXCEPTION_(str, value) { throw_new_debugger_exception(env, str); return value; }
 #define THROW_NEW_DEBUGGER_EXCEPTION(str) { throw_new_debugger_exception(env, str); return;}
 #define CHECK_EXCEPTION_CLEAR if ((*env)->ExceptionOccurred(env)) { (*env)->ExceptionClear(env); }
 #define CHECK_EXCEPTION_CLEAR_VOID if ((*env)->ExceptionOccurred(env)) { (*env)->ExceptionClear(env); return; }
 #define CHECK_EXCEPTION_CLEAR_(value) if ((*env)->ExceptionOccurred(env)) { (*env)->ExceptionClear(env); return value; }
 static void throw_new_debugger_exception(JNIEnv* env, const char* errMsg) {
   jclass exceptionClass = (*env)->FindClass(env, "sun/jvm/hotspot/debugger/DebuggerException");
   CHECK_EXCEPTION;
   (*env)->ThrowNew(env, exceptionClass, errMsg);
 }
 static struct ps_prochandle* get_proc_handle(JNIEnv* env, jobject this_obj) {
   jlong ptr = (*env)->GetLongField(env, this_obj, p_ps_prochandle_ID);
   return (struct ps_prochandle*)(intptr_t)ptr;
 }
 #if defined(__i386__)
     #define hsdb_thread_state_t     x86_thread_state32_t
     #define hsdb_float_state_t      x86_float_state32_t
     #define HSDB_THREAD_STATE       x86_THREAD_STATE32
     #define HSDB_FLOAT_STATE        x86_FLOAT_STATE32
     #define HSDB_THREAD_STATE_COUNT x86_THREAD_STATE32_COUNT
     #define HSDB_FLOAT_STATE_COUNT  x86_FLOAT_STATE32_COUNT
 #elif defined(__x86_64__)
     #define hsdb_thread_state_t     x86_thread_state64_t
     #define hsdb_float_state_t      x86_float_state64_t
     #define HSDB_THREAD_STATE       x86_THREAD_STATE64
     #define HSDB_FLOAT_STATE        x86_FLOAT_STATE64
     #define HSDB_THREAD_STATE_COUNT x86_THREAD_STATE64_COUNT
     #define HSDB_FLOAT_STATE_COUNT  x86_FLOAT_STATE64_COUNT
 #else
     #error UNSUPPORTED_ARCH
 #endif
 /*
  * Class:     sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
  * Method:    init0
  * Signature: ()V
  */
 JNIEXPORT void JNICALL
 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_init0(JNIEnv *env, jclass cls) {
   symbolicatorID = (*env)->GetFieldID(env, cls, "symbolicator", "J");
   CHECK_EXCEPTION;
   taskID = (*env)->GetFieldID(env, cls, "task", "J");
   CHECK_EXCEPTION;
   // for core file
   p_ps_prochandle_ID = (*env)->GetFieldID(env, cls, "p_ps_prochandle", "J");
   CHECK_EXCEPTION;
   loadObjectList_ID = (*env)->GetFieldID(env, cls, "loadObjectList", "Ljava/util/List;");
   CHECK_EXCEPTION;
   // methods we use
   createClosestSymbol_ID = (*env)->GetMethodID(env, cls, "createClosestSymbol",
                     "(Ljava/lang/String;J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;");
   CHECK_EXCEPTION;
   createLoadObject_ID = (*env)->GetMethodID(env, cls, "createLoadObject",
                     "(Ljava/lang/String;JJ)Lsun/jvm/hotspot/debugger/cdbg/LoadObject;");
   CHECK_EXCEPTION;
   // java.util.List method we call
   jclass listClass = (*env)->FindClass(env, "java/util/List");
   CHECK_EXCEPTION;
   listAdd_ID = (*env)->GetMethodID(env, listClass, "add", "(Ljava/lang/Object;)Z");
   CHECK_EXCEPTION;
   getJavaThreadsInfo_ID = (*env)->GetMethodID(env, cls, "getJavaThreadsInfo",
                                                      "()[J");
   CHECK_EXCEPTION;
   init_libproc(getenv("LIBSAPROC_DEBUG") != NULL);
 }
 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getAddressSize
   (JNIEnv *env, jclass cls)
 {
 #ifdef _LP64
   return 8;
 #else
   #error UNSUPPORTED_ARCH
 #endif
 }
 /** called by Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_lookupByName0 */
 jlong lookupByNameIncore(
   JNIEnv *env, struct ps_prochandle *ph, jobject this_obj, jstring objectName, jstring symbolName)
 {
   const char *objectName_cstr, *symbolName_cstr;
   jlong addr;
   jboolean isCopy;
   objectName_cstr = NULL;
   if (objectName != NULL) {
     objectName_cstr = (*env)->GetStringUTFChars(env, objectName, &isCopy);
     CHECK_EXCEPTION_(0);
   }
   symbolName_cstr = (*env)->GetStringUTFChars(env, symbolName, &isCopy);
   CHECK_EXCEPTION_(0);
   print_debug("look for %s \n", symbolName_cstr);
   addr = (jlong) lookup_symbol(ph, objectName_cstr, symbolName_cstr);
   if (objectName_cstr != NULL) {
     (*env)->ReleaseStringUTFChars(env, objectName, objectName_cstr);
   }
   (*env)->ReleaseStringUTFChars(env, symbolName, symbolName_cstr);
   return addr;
 }
 /*
  * Class:     sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
  * Method:    lookupByName0
  * Signature: (Ljava/lang/String;Ljava/lang/String;)J
  */
 JNIEXPORT jlong JNICALL
 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_lookupByName0(
   JNIEnv *env, jobject this_obj,
   jstring objectName, jstring symbolName)
 {
   struct ps_prochandle* ph = get_proc_handle(env, this_obj);
   if (ph != NULL && ph->core != NULL) {
     return lookupByNameIncore(env, ph, this_obj, objectName, symbolName);
   }
   jlong address = 0;
 JNF_COCOA_ENTER(env);
   NSString *symbolNameString = JNFJavaToNSString(env, symbolName);
   print_debug("lookupInProcess called for %s\n", [symbolNameString UTF8String]);
   id symbolicator = getSymbolicator(env, this_obj);
   if (symbolicator != nil) {
     uint64_t (*dynamicCall)(id, SEL, NSString *) = (uint64_t (*)(id, SEL, NSString *))&objc_msgSend;
     address = (jlong) dynamicCall(symbolicator, @selector(addressForSymbol:), symbolNameString);
   }
   print_debug("address of symbol %s = %llx\n", [symbolNameString UTF8String], address);
 JNF_COCOA_EXIT(env);
   return address;
 }
 /*
  * Class:     sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
  * Method:    lookupByAddress0
  * Signature: (J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;
  */
 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_lookupByAddress0
   (JNIEnv *env, jobject this_obj, jlong addr) {
   uintptr_t offset;
   const char* sym = NULL;
   jstring sym_string;
   struct ps_prochandle* ph = get_proc_handle(env, this_obj);
   if (ph != NULL && ph->core != NULL) {
     sym = symbol_for_pc(ph, (uintptr_t) addr, &offset);
     if (sym == NULL) return 0;
     sym_string = (*env)->NewStringUTF(env, sym);
     CHECK_EXCEPTION_(0);
     return (*env)->CallObjectMethod(env, this_obj, createClosestSymbol_ID,
                                                 sym_string, (jlong)offset);
   }
   return 0;
 }
 /** called from Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_readBytesFromProcess0 */
 jbyteArray readBytesFromCore(
   JNIEnv *env, struct ps_prochandle *ph, jobject this_obj, jlong addr, jlong numBytes)
 {
   jboolean isCopy;
   jbyteArray array;
   jbyte *bufPtr;
   ps_err_e err;
   array = (*env)->NewByteArray(env, numBytes);
   CHECK_EXCEPTION_(0);
   bufPtr = (*env)->GetByteArrayElements(env, array, &isCopy);
   CHECK_EXCEPTION_(0);
   err = ps_pread(ph, (psaddr_t) (uintptr_t)addr, bufPtr, numBytes);
   (*env)->ReleaseByteArrayElements(env, array, bufPtr, 0);
   return (err == PS_OK)? array : 0;
 }
 /*
  * Class:     sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
  * Method:    readBytesFromProcess0
  * Signature: (JJ)Lsun/jvm/hotspot/debugger/ReadResult;
  */
 JNIEXPORT jbyteArray JNICALL
 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_readBytesFromProcess0(
   JNIEnv *env, jobject this_obj,
   jlong addr, jlong numBytes)
 {
   print_debug("readBytesFromProcess called. addr = %llx numBytes = %lld\n", addr, numBytes);
   // must allocate storage instead of using former parameter buf
   jbyteArray array;
   struct ps_prochandle* ph = get_proc_handle(env, this_obj);
   if (ph != NULL && ph->core != NULL) {
     return readBytesFromCore(env, ph, this_obj, addr, numBytes);
   }
   array = (*env)->NewByteArray(env, numBytes);
   CHECK_EXCEPTION_(0);
   unsigned long alignedAddress;
   unsigned long alignedLength = 0;
   kern_return_t result;
   vm_offset_t *pages;
   int *mapped;
   long pageCount;
   uint byteCount;
   int i;
   unsigned long remaining;
   alignedAddress = trunc_page(addr);
   if (addr != alignedAddress) {
     alignedLength += addr - alignedAddress;
   }
   alignedLength = round_page(numBytes);
   pageCount = alignedLength/vm_page_size;
   // Allocate storage for pages and flags.
   pages = malloc(pageCount * sizeof(vm_offset_t));
   mapped = calloc(pageCount, sizeof(int));
   task_t gTask = getTask(env, this_obj);
   // Try to read each of the pages.
   for (i = 0; i < pageCount; i++) {
     result = vm_read(gTask, alignedAddress + i*vm_page_size, vm_page_size,
 		     &pages[i], &byteCount);
     mapped[i] = (result == KERN_SUCCESS);
     // assume all failures are unmapped pages
   }
   print_debug("%ld pages\n", pageCount);
   remaining = numBytes;
   for (i = 0; i < pageCount; i++) {
     unsigned long len = vm_page_size;
     unsigned long start = 0;
     if (i == 0) {
       start = addr - alignedAddress;
       len = vm_page_size - start;
     }
     if (i == (pageCount - 1)) {
       len = remaining;
     }
     if (mapped[i]) {
       print_debug("page %d mapped (len %ld start %ld)\n", i, len, start);
       (*env)->SetByteArrayRegion(env, array, 0, len, ((jbyte *) pages[i] + start));
       vm_deallocate(mach_task_self(), pages[i], vm_page_size);
     }
     remaining -= len;
   }
   free (pages);
   free (mapped);
   return array;
 }
 /** Only used for core file reading, set thread_id for threads which is got after core file parsed.
   * Thread context is available in Mach-O core file but thread id is not. We can get thread id
   * from Threads which store all java threads information when they are created. Here we can identify
   * them as java threads by checking if a thread's rsp or rbp within a java thread's stack.
   * Note Macosx uses unique_thread_id which is different from other platforms though printed ids
   * are still pthread id. Function BsdDebuggerLocal.getJavaThreadsInfo returns an array of long
   * integers to host all java threads' id, stack_start, stack_end as:
   * [uid0, stack_start0, stack_end0, uid1, stack_start1, stack_end1, ...]
   *
   * The work cannot be done at init0 since Threads is not available yet(VM not initialized yet).
   * This function should be called only once if succeeded
   */
 bool fill_java_threads(JNIEnv* env, jobject this_obj, struct ps_prochandle* ph) {
   int n = 0, i = 0, j;
   struct reg regs;
   jlongArray thrinfos = (*env)->CallObjectMethod(env, this_obj, getJavaThreadsInfo_ID);
   CHECK_EXCEPTION_(false);
   int len = (int)(*env)->GetArrayLength(env, thrinfos);
   uint64_t* cinfos = (uint64_t *)(*env)->GetLongArrayElements(env, thrinfos, NULL);
   CHECK_EXCEPTION_(false);
   n = get_num_threads(ph);
   print_debug("fill_java_threads called, num_of_thread = %d\n", n);
   for (i = 0; i < n; i++) {
     if (!get_nth_lwp_regs(ph, i, &regs)) {
       print_debug("Could not get regs of thread %d, already set!\n", i);
       return false;
     }
     for (j = 0; j < len; j += 3) {
       lwpid_t  uid = cinfos[j];
       uint64_t beg = cinfos[j + 1];
       uint64_t end = cinfos[j + 2];
       if ((regs.r_rsp < end && regs.r_rsp >= beg) ||
           (regs.r_rbp < end && regs.r_rbp >= beg)) {
         set_lwp_id(ph, i, uid);
         break;
       }
     }
   }
   (*env)->ReleaseLongArrayElements(env, thrinfos, (jlong*)cinfos, 0);
   CHECK_EXCEPTION_(false);
   return true;
 }
 /* For core file only, called from
  * Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getThreadIntegerRegisterSet0
  */
 jlongArray getThreadIntegerRegisterSetFromCore(JNIEnv *env, jobject this_obj, long lwp_id, struct ps_prochandle* ph) {
   if (!_threads_filled)  {
     if (!fill_java_threads(env, this_obj, ph)) {
       throw_new_debugger_exception(env, "Failed to fill in threads");
       return 0;
     } else {
       _threads_filled = true;
     }
   }
   struct reg gregs;
   jboolean isCopy;
   jlongArray array;
   jlong *regs;
   if (get_lwp_regs(ph, lwp_id, &gregs) != true) {
     THROW_NEW_DEBUGGER_EXCEPTION_("get_thread_regs failed for a lwp", 0);
   }
 #undef NPRGREG
 #undef REG_INDEX
 #if amd64
 #define NPRGREG sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_NPRGREG
 #define REG_INDEX(reg) sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_##reg
   array = (*env)->NewLongArray(env, NPRGREG);
   CHECK_EXCEPTION_(0);
   regs = (*env)->GetLongArrayElements(env, array, &isCopy);
   regs[REG_INDEX(R15)] = gregs.r_r15;
   regs[REG_INDEX(R14)] = gregs.r_r14;
   regs[REG_INDEX(R13)] = gregs.r_r13;
   regs[REG_INDEX(R12)] = gregs.r_r12;
   regs[REG_INDEX(RBP)] = gregs.r_rbp;
   regs[REG_INDEX(RBX)] = gregs.r_rbx;
   regs[REG_INDEX(R11)] = gregs.r_r11;
   regs[REG_INDEX(R10)] = gregs.r_r10;
   regs[REG_INDEX(R9)]  = gregs.r_r9;
   regs[REG_INDEX(R8)]  = gregs.r_r8;
   regs[REG_INDEX(RAX)] = gregs.r_rax;
   regs[REG_INDEX(RCX)] = gregs.r_rcx;
   regs[REG_INDEX(RDX)] = gregs.r_rdx;
   regs[REG_INDEX(RSI)] = gregs.r_rsi;
   regs[REG_INDEX(RDI)] = gregs.r_rdi;
   regs[REG_INDEX(RIP)] = gregs.r_rip;
   regs[REG_INDEX(CS)]  = gregs.r_cs;
   regs[REG_INDEX(RSP)] = gregs.r_rsp;
   regs[REG_INDEX(SS)]  = gregs.r_ss;
   regs[REG_INDEX(FSBASE)] = 0;
   regs[REG_INDEX(GSBASE)] = 0;
   regs[REG_INDEX(DS)] = gregs.r_ds;
   regs[REG_INDEX(ES)] = gregs.r_es;
   regs[REG_INDEX(FS)] = gregs.r_fs;
   regs[REG_INDEX(GS)] = gregs.r_gs;
   regs[REG_INDEX(TRAPNO)] = gregs.r_trapno;
   regs[REG_INDEX(RFL)]    = gregs.r_rflags;
 #endif /* amd64 */
   (*env)->ReleaseLongArrayElements(env, array, regs, JNI_COMMIT);
   return array;
 }
 /*
  * Lookup the thread_t that corresponds to the given thread_id.
  * The thread_id should be the result from calling thread_info() with THREAD_IDENTIFIER_INFO
  * and reading the m_ident_info.thread_id returned.
  * The returned thread_t is the mach send right to the kernel port for the corresponding thread.
  *
  * We cannot simply use the OSThread._thread_id field in the JVM. This is set to ::mach_thread_self()
  * in the VM, but that thread port is not valid for a remote debugger to access the thread.
  */
 thread_t
 lookupThreadFromThreadId(task_t task, jlong thread_id) {
   print_debug("lookupThreadFromThreadId thread_id=0x%llx\n", thread_id);
   thread_array_t thread_list = NULL;
   mach_msg_type_number_t thread_list_count = 0;
   thread_t result_thread = 0;
   int i;
   // get the list of all the send rights
   kern_return_t result = task_threads(task, &thread_list, &thread_list_count);
   if (result != KERN_SUCCESS) {
     print_debug("task_threads returned 0x%x\n", result);
     return 0;
   }
   for(i = 0 ; i < thread_list_count; i++) {
     thread_identifier_info_data_t m_ident_info;
     mach_msg_type_number_t count = THREAD_IDENTIFIER_INFO_COUNT;
     // get the THREAD_IDENTIFIER_INFO for the send right
     result = thread_info(thread_list[i], THREAD_IDENTIFIER_INFO, (thread_info_t) &m_ident_info, &count);
     if (result != KERN_SUCCESS) {
       print_debug("thread_info returned 0x%x\n", result);
       break;
     }
     // if this is the one we're looking for, return the send right
     if (thread_id == m_ident_info.thread_id)
     {
       result_thread = thread_list[i];
       break;
     }
   }
   vm_size_t thread_list_size = (vm_size_t) (thread_list_count * sizeof (thread_t));
   vm_deallocate(mach_task_self(), (vm_address_t) thread_list, thread_list_count);
   return result_thread;
 }
 /*
  * Class:     sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
  * Method:    getThreadIntegerRegisterSet0
  * Signature: (J)[J
  */
 JNIEXPORT jlongArray JNICALL
 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getThreadIntegerRegisterSet0(
   JNIEnv *env, jobject this_obj,
   jlong thread_id)
 {
   print_debug("getThreadRegisterSet0 called\n");
   struct ps_prochandle* ph = get_proc_handle(env, this_obj);
   if (ph != NULL && ph->core != NULL) {
     return getThreadIntegerRegisterSetFromCore(env, this_obj, thread_id, ph);
   }
   kern_return_t result;
   thread_t tid;
   mach_msg_type_number_t count = HSDB_THREAD_STATE_COUNT;
   hsdb_thread_state_t state;
   jlongArray registerArray;
   jlong *primitiveArray;
   task_t gTask = getTask(env, this_obj);
   tid = lookupThreadFromThreadId(gTask, thread_id);
   result = thread_get_state(tid, HSDB_THREAD_STATE, (thread_state_t)&state, &count);
   if (result != KERN_SUCCESS) {
     print_error("getregs: thread_get_state(%d) failed (%d)\n", tid, result);
     return NULL;
   }
 #if amd64
 #define NPRGREG sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_NPRGREG
 #undef REG_INDEX
 #define REG_INDEX(reg) sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_##reg
   // 64 bit
   print_debug("Getting threads for a 64-bit process\n");
   registerArray = (*env)->NewLongArray(env, NPRGREG);
   CHECK_EXCEPTION_(0);
   primitiveArray = (*env)->GetLongArrayElements(env, registerArray, NULL);
   primitiveArray[REG_INDEX(R15)] = state.__r15;
   primitiveArray[REG_INDEX(R14)] = state.__r14;
   primitiveArray[REG_INDEX(R13)] = state.__r13;
   primitiveArray[REG_INDEX(R12)] = state.__r12;
   primitiveArray[REG_INDEX(R11)] = state.__r11;
   primitiveArray[REG_INDEX(R10)] = state.__r10;
   primitiveArray[REG_INDEX(R9)]  = state.__r9;
   primitiveArray[REG_INDEX(R8)]  = state.__r8;
   primitiveArray[REG_INDEX(RDI)] = state.__rdi;
   primitiveArray[REG_INDEX(RSI)] = state.__rsi;
   primitiveArray[REG_INDEX(RBP)] = state.__rbp;
   primitiveArray[REG_INDEX(RBX)] = state.__rbx;
   primitiveArray[REG_INDEX(RDX)] = state.__rdx;
   primitiveArray[REG_INDEX(RCX)] = state.__rcx;
   primitiveArray[REG_INDEX(RAX)] = state.__rax;
   primitiveArray[REG_INDEX(TRAPNO)] = 0;            // trapno, not used
   primitiveArray[REG_INDEX(ERR)]    = 0;            // err, not used
   primitiveArray[REG_INDEX(RIP)] = state.__rip;
   primitiveArray[REG_INDEX(CS)]  = state.__cs;
   primitiveArray[REG_INDEX(RFL)] = state.__rflags;
   primitiveArray[REG_INDEX(RSP)] = state.__rsp;
   primitiveArray[REG_INDEX(SS)] = 0;                // We don't have SS
   primitiveArray[REG_INDEX(FS)] = state.__fs;
   primitiveArray[REG_INDEX(GS)] = state.__gs;
   primitiveArray[REG_INDEX(ES)] = 0;
   primitiveArray[REG_INDEX(DS)] = 0;
   primitiveArray[REG_INDEX(FSBASE)] = 0;
   primitiveArray[REG_INDEX(GSBASE)] = 0;
   print_debug("set registers\n");
   (*env)->ReleaseLongArrayElements(env, registerArray, primitiveArray, 0);
 #else
 #error UNSUPPORTED_ARCH
 #endif /* amd64 */
   return registerArray;
 }
 /*
  * Class:     sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
  * Method:    translateTID0
  * Signature: (I)I
  */
 JNIEXPORT jint JNICALL
 Java_sun_jvm_hotspot_debugger_macosx_MacOSXDebuggerLocal_translateTID0(
   JNIEnv *env, jobject this_obj, jint tid)
 {
   print_debug("translateTID0 called on tid = 0x%x\n", (int)tid);
   kern_return_t result;
   thread_t foreign_tid, usable_tid;
   mach_msg_type_name_t type;
   foreign_tid = tid;
   task_t gTask = getTask(env, this_obj);
   result = mach_port_extract_right(gTask, foreign_tid,
 				   MACH_MSG_TYPE_COPY_SEND,
 				   &usable_tid, &type);
   if (result != KERN_SUCCESS)
     return -1;
   print_debug("translateTID0: 0x%x -> 0x%x\n", foreign_tid, usable_tid);
   return (jint) usable_tid;
 }
 static bool ptrace_continue(pid_t pid, int signal) {
   // pass the signal to the process so we don't swallow it
   int res;
   if ((res = ptrace(PT_CONTINUE, pid, (caddr_t)1, signal)) < 0) {
     print_error("attach: ptrace(PT_CONTINUE, %d) failed with %d\n", pid, res);
     return false;
   }
   return true;
 }
 // waits until the ATTACH has stopped the process
 // by signal SIGSTOP
 static bool ptrace_waitpid(pid_t pid) {
   int ret;
   int status;
   while (true) {
     // Wait for debuggee to stop.
     ret = waitpid(pid, &status, 0);
     if (ret >= 0) {
       if (WIFSTOPPED(status)) {
         // Any signal will stop the thread, make sure it is SIGSTOP. Otherwise SIGSTOP
         // will still be pending and delivered when the process is DETACHED and the process
         // will go to sleep.
         if (WSTOPSIG(status) == SIGSTOP) {
           // Debuggee stopped by SIGSTOP.
           return true;
         }
         if (!ptrace_continue(pid, WSTOPSIG(status))) {
           print_error("attach: Failed to correctly attach to VM. VM might HANG! [PTRACE_CONT failed, stopped by %d]\n", WSTOPSIG(status));
           return false;
         }
       } else {
         print_error("attach: waitpid(): Child process exited/terminated (status = 0x%x)\n", status);
         return false;
       }
     } else {
       switch (errno) {
         case EINTR:
           continue;
           break;
         case ECHILD:
           print_error("attach: waitpid() failed. Child process pid (%d) does not exist \n", pid);
           break;
         case EINVAL:
           print_error("attach: waitpid() failed. Invalid options argument.\n");
           break;
         default:
           print_error("attach: waitpid() failed. Unexpected error %d\n",errno);
           break;
       }
       return false;
     }
   }
 }
 // attach to a process/thread specified by "pid"
 static bool ptrace_attach(pid_t pid) {
   int res;
   if ((res = ptrace(PT_ATTACH, pid, 0, 0)) < 0) {
     print_error("ptrace(PT_ATTACH, %d) failed with %d\n", pid, res);
     return false;
   } else {
     return ptrace_waitpid(pid);
   }
 }
 /*
  * Class:     sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
  * Method:    attach0
  * Signature: (I)V
  */
 JNIEXPORT void JNICALL
 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_attach0__I(
   JNIEnv *env, jobject this_obj, jint jpid)
 {
   print_debug("attach0 called for jpid=%d\n", (int)jpid);
 JNF_COCOA_ENTER(env);
   kern_return_t result;
   task_t gTask = 0;
   result = task_for_pid(mach_task_self(), jpid, &gTask);
   if (result != KERN_SUCCESS) {
     print_error("attach: task_for_pid(%d) failed: '%s' (%d)\n", (int)jpid, mach_error_string(result), result);
     THROW_NEW_DEBUGGER_EXCEPTION("Can't attach to the process. Could be caused by an incorrect pid or lack of privileges.");
   }
   putTask(env, this_obj, gTask);
   // use ptrace to stop the process
   // on os x, ptrace only needs to be called on the process, not the individual threads
   if (ptrace_attach(jpid) != true) {
     mach_port_deallocate(mach_task_self(), gTask);
     THROW_NEW_DEBUGGER_EXCEPTION("Can't attach to the process");
   }
   id symbolicator = nil;
   id jrsSymbolicator = objc_lookUpClass("JRSSymbolicator");
   if (jrsSymbolicator != nil) {
     id (*dynamicCall)(id, SEL, pid_t) = (id (*)(id, SEL, pid_t))&objc_msgSend;
     symbolicator = dynamicCall(jrsSymbolicator, @selector(symbolicatorForPid:), (pid_t)jpid);
   }
   if (symbolicator != nil) {
     CFRetain(symbolicator); // pin symbolicator while in java heap
   }
   putSymbolicator(env, this_obj, symbolicator);
   if (symbolicator == nil) {
     THROW_NEW_DEBUGGER_EXCEPTION("Can't attach symbolicator to the process");
   }
 JNF_COCOA_EXIT(env);
 }
 /** For core file,
     called from Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2 */
 static void fillLoadObjects(JNIEnv* env, jobject this_obj, struct ps_prochandle* ph) {
   int n = 0, i = 0;
   // add load objects
   n = get_num_libs(ph);
   for (i = 0; i < n; i++) {
      uintptr_t base;
      const char* name;
      jobject loadObject;
      jobject loadObjectList;
      jstring nameString;
      base = get_lib_base(ph, i);
      name = get_lib_name(ph, i);
      nameString = (*env)->NewStringUTF(env, name);
      CHECK_EXCEPTION;
      loadObject = (*env)->CallObjectMethod(env, this_obj, createLoadObject_ID,
                                             nameString, (jlong)0, (jlong)base);
      CHECK_EXCEPTION;
      loadObjectList = (*env)->GetObjectField(env, this_obj, loadObjectList_ID);
      CHECK_EXCEPTION;
      (*env)->CallBooleanMethod(env, loadObjectList, listAdd_ID, loadObject);
      CHECK_EXCEPTION;
   }
 }
 /*
  * Class:     sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
  * Method:    attach0
  * Signature: (Ljava/lang/String;Ljava/lang/String;)V
  */
 JNIEXPORT void JNICALL
 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2(
   JNIEnv *env, jobject this_obj, jstring execName, jstring coreName)
 {
   const char *execName_cstr;
   const char *coreName_cstr;
   jboolean isCopy;
   struct ps_prochandle* ph;
   execName_cstr = (*env)->GetStringUTFChars(env, execName, &isCopy);
   CHECK_EXCEPTION;
   coreName_cstr = (*env)->GetStringUTFChars(env, coreName, &isCopy);
   CHECK_EXCEPTION;
   print_debug("attach: %s %s\n", execName_cstr, coreName_cstr);
   if ( (ph = Pgrab_core(execName_cstr, coreName_cstr)) == NULL) {
     (*env)->ReleaseStringUTFChars(env, execName, execName_cstr);
     (*env)->ReleaseStringUTFChars(env, coreName, coreName_cstr);
     THROW_NEW_DEBUGGER_EXCEPTION("Can't attach to the core file");
   }
   (*env)->SetLongField(env, this_obj, p_ps_prochandle_ID, (jlong)(intptr_t)ph);
   (*env)->ReleaseStringUTFChars(env, execName, execName_cstr);
   (*env)->ReleaseStringUTFChars(env, coreName, coreName_cstr);
   fillLoadObjects(env, this_obj, ph);
 }
 /*
  * Class:     sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
  * Method:    detach0
  * Signature: ()V
  */
 JNIEXPORT void JNICALL
 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_detach0(
   JNIEnv *env, jobject this_obj)
 {
   print_debug("detach0 called\n");
   struct ps_prochandle* ph = get_proc_handle(env, this_obj);
   if (ph != NULL && ph->core != NULL) {
      Prelease(ph);
      return;
   }
 JNF_COCOA_ENTER(env);
   task_t gTask = getTask(env, this_obj);
   // detach from the ptraced process causing it to resume execution
   int pid;
   kern_return_t k_res;
   k_res = pid_for_task(gTask, &pid);
   if (k_res != KERN_SUCCESS) {
     print_error("detach: pid_for_task(%d) failed (%d)\n", pid, k_res);
   }
   else {
     int res = ptrace(PT_DETACH, pid, 0, 0);
     if (res < 0) {
       print_error("detach: ptrace(PT_DETACH, %d) failed (%d)\n", pid, res);
     }
   }
   mach_port_deallocate(mach_task_self(), gTask);
   id symbolicator = getSymbolicator(env, this_obj);
   if (symbolicator != nil) {
     CFRelease(symbolicator);
   }
 JNF_COCOA_EXIT(env);
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

agent/src/os/bsd/MacosxDebuggerLocal.m@0e1aa319e805 (annotated)

agent/src/os/bsd/MacosxDebuggerLocal.m