/*
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* Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
|
* accompanied this code).
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*
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* 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,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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|
#include <ctype.h>
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|
#include "util.h"
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#include "commonRef.h"
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#include "debugDispatch.h"
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#include "eventHandler.h"
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#include "eventHelper.h"
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#include "threadControl.h"
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#include "stepControl.h"
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#include "transport.h"
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#include "classTrack.h"
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#include "debugLoop.h"
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#include "bag.h"
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#include "invoker.h"
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#include "sys.h"
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// ANDROID-CHANGED: Allow us to initialize VMDebug & ddms apis.
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#include "vmDebug.h"
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#include "DDMImpl.h"
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/* How the options get to OnLoad: */
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#define XDEBUG "-Xdebug"
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#define XRUN "-Xrunjdwp"
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#define AGENTLIB "-agentlib:jdwp"
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/* Debug version defaults */
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#ifdef DEBUG
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#define DEFAULT_ASSERT_ON JNI_TRUE
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#define DEFAULT_ASSERT_FATAL JNI_TRUE
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#define DEFAULT_LOGFILE "jdwp.log"
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#else
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#define DEFAULT_ASSERT_ON JNI_FALSE
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#define DEFAULT_ASSERT_FATAL JNI_FALSE
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#define DEFAULT_LOGFILE NULL
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#endif
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// ANDROID-CHANGED: Special Art Version to get an ArtTiEnv. This has the same basic api as a
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// jvmtiEnv but generally has a caveat that everything is best effort.
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#define ART_TI_VERSION_1_2 (JVMTI_VERSION_1_2 | 0x40000000)
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static jboolean vmInitialized;
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static jrawMonitorID initMonitor;
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static jboolean initComplete;
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static jbyte currentSessionID;
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// ANDROID-CHANGED: We need to support OnAttach for android so use this to let other parts know that
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// we aren't fully initialized yet.
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static jboolean isInAttach = JNI_FALSE;
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/*
|
* Options set through the OnLoad options string. All of these values
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* are set once at VM startup and never reset.
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*/
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static jboolean isServer = JNI_FALSE; /* Listens for connecting debuggers? */
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static jboolean isStrict = JNI_FALSE; /* Unused */
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static jboolean useStandardAlloc = JNI_FALSE; /* Use standard malloc/free? */
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static struct bag *transports; /* of TransportSpec */
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|
static jboolean initOnStartup = JNI_TRUE; /* init immediately */
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static char *initOnException = NULL; /* init when this exception thrown */
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static jboolean initOnUncaught = JNI_FALSE; /* init when uncaught exc thrown */
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static char *launchOnInit = NULL; /* launch this app during init */
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static jboolean suspendOnInit = JNI_TRUE; /* suspend all app threads after init */
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static jboolean dopause = JNI_FALSE; /* pause for debugger attach */
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static jboolean docoredump = JNI_FALSE; /* core dump on exit */
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/* ANDROID-CHANGED: Added directlog option */
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static jboolean directlog = JNI_FALSE; /* Don't add pid to logfile. */
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static char *logfile = NULL; /* Name of logfile (if logging) */
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static unsigned logflags = 0; /* Log flags */
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static char *names; /* strings derived from OnLoad options */
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/*
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* Elements of the transports bag
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*/
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typedef struct TransportSpec {
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char *name;
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char *address;
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long timeout;
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} TransportSpec;
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/*
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* Forward Refs
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*/
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static void JNICALL cbEarlyVMInit(jvmtiEnv*, JNIEnv *, jthread);
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static void JNICALL cbEarlyVMDeath(jvmtiEnv*, JNIEnv *);
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static void JNICALL cbEarlyException(jvmtiEnv*, JNIEnv *,
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jthread, jmethodID, jlocation, jobject, jmethodID, jlocation);
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static void initialize(JNIEnv *env, jthread thread, EventIndex triggering_ei);
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static jboolean parseOptions(char *str);
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/*
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* Phase 1: Initial load.
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*
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* OnLoad is called by the VM immediately after the back-end
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* library is loaded. We can do very little in this function since
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* the VM has not completed initialization. So, we parse the JDWP
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* options and set up a simple initial event callbacks for JVMTI events.
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* When a triggering event occurs, that callback will begin debugger initialization.
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*/
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/* Get a static area to hold the Global Data */
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static BackendGlobalData *
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get_gdata(void)
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{
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static BackendGlobalData s;
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(void)memset(&s, 0, sizeof(BackendGlobalData));
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return &s;
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}
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static jvmtiError
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set_event_notification(jvmtiEventMode mode, EventIndex ei)
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{
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jvmtiError error;
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error = JVMTI_FUNC_PTR(gdata->jvmti,SetEventNotificationMode)
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(gdata->jvmti, mode, eventIndex2jvmti(ei), NULL);
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if (error != JVMTI_ERROR_NONE) {
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ERROR_MESSAGE(("JDWP unable to configure initial JVMTI event %s: %s(%d)",
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eventText(ei), jvmtiErrorText(error), error));
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}
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return error;
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}
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typedef struct {
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int major;
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int minor;
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} version_type;
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typedef struct {
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version_type runtime;
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version_type compiletime;
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} compatible_versions_type;
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/*
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* List of explicitly compatible JVMTI versions, specified as
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* { runtime version, compile-time version } pairs. -1 is a wildcard.
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*/
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static int nof_compatible_versions = 3;
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static compatible_versions_type compatible_versions_list[] = {
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/*
|
* FIXUP: Allow version 0 to be compatible with anything
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* Special check for FCS of 1.0.
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*/
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{ { 0, -1 }, { -1, -1 } },
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{ { -1, -1 }, { 0, -1 } },
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/*
|
* 1.2 is runtime compatible with 1.1 -- just make sure to check the
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* version before using any new 1.2 features
|
*/
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{ { 1, 1 }, { 1, 2 } }
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};
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|
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/* Logic to determine JVMTI version compatibility */
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static jboolean
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compatible_versions(jint major_runtime, jint minor_runtime,
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jint major_compiletime, jint minor_compiletime)
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{
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/*
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* First check to see if versions are explicitly compatible via the
|
* list specified above.
|
*/
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int i;
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for (i = 0; i < nof_compatible_versions; ++i) {
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version_type runtime = compatible_versions_list[i].runtime;
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version_type comptime = compatible_versions_list[i].compiletime;
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if ((major_runtime == runtime.major || runtime.major == -1) &&
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(minor_runtime == runtime.minor || runtime.minor == -1) &&
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(major_compiletime == comptime.major || comptime.major == -1) &&
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(minor_compiletime == comptime.minor || comptime.minor == -1)) {
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return JNI_TRUE;
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}
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}
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return major_runtime == major_compiletime &&
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minor_runtime >= minor_compiletime;
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}
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// ANDROID-CHANGED: Function to get and set the com.android.art.internal.ddm.process_chunk and
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// com.android.art.concurrent.raw_monitor_enter_no_suspend extension functions. This returns JNI_ERR
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// if something went wrong with searching. If the extension is not found we return JNI_OK and don't
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// bother updating the gdata pointer.
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static jint find_extension_functions()
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{
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jvmtiError error;
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jvmtiExtensionFunctionInfo* extension_info;
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jint num_extensions;
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jboolean found;
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int i;
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int j;
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found = JNI_FALSE;
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetExtensionFunctions)
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(gdata->jvmti, &num_extensions, &extension_info);
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if (error != JVMTI_ERROR_NONE) {
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ERROR_MESSAGE(("JDWP Unable to get jvmti extension functions: %s(%d)",
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jvmtiErrorText(error), error));
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return JNI_ERR;
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}
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// We iterate through every extension function even once we found the one we want in order to
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// clean them all up as we go.
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for (i = 0; i < num_extensions; i++) {
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if (strcmp("com.android.art.internal.ddm.process_chunk", extension_info[i].id) == 0) {
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gdata->ddm_process_chunk = (DdmProcessChunk) extension_info[i].func;
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}
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if (strcmp("com.android.art.concurrent.raw_monitor_enter_no_suspend",
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extension_info[i].id) == 0) {
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gdata->raw_monitor_enter_no_suspend = (RawMonitorEnterNoSuspend) extension_info[i].func;
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}
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jvmtiDeallocate(extension_info[i].id);
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jvmtiDeallocate(extension_info[i].short_description);
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for (j = 0; j < extension_info[i].param_count; j++) {
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jvmtiDeallocate(extension_info[i].params[j].name);
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}
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jvmtiDeallocate(extension_info[i].params);
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jvmtiDeallocate(extension_info[i].errors);
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}
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jvmtiDeallocate(extension_info);
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return JNI_OK;
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}
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/* OnLoad startup:
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* Returning JNI_ERR will cause the java_g VM to core dump, be careful.
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*/
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JNIEXPORT jint JNICALL
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Agent_OnLoad(JavaVM *vm, char *options, void *reserved)
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{
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jvmtiError error;
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jvmtiCapabilities needed_capabilities;
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jvmtiCapabilities potential_capabilities;
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jint jvmtiCompileTimeMajorVersion;
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jint jvmtiCompileTimeMinorVersion;
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jint jvmtiCompileTimeMicroVersion;
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char npt_lib[MAXPATHLEN];
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/* See if it's already loaded */
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if ( gdata!=NULL && gdata->isLoaded==JNI_TRUE ) {
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ERROR_MESSAGE(("Cannot load this JVM TI agent twice, check your java command line for duplicate jdwp options."));
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return JNI_ERR;
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}
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/* If gdata is defined and the VM died, why are we here? */
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if ( gdata!=NULL && gdata->vmDead ) {
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ERROR_MESSAGE(("JDWP unable to load, VM died"));
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return JNI_ERR;
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}
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/* Get global data area */
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gdata = get_gdata();
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if (gdata == NULL) {
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ERROR_MESSAGE(("JDWP unable to allocate memory"));
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return JNI_ERR;
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}
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gdata->isLoaded = JNI_TRUE;
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/* Start filling in gdata */
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gdata->jvm = vm;
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vmInitialized = JNI_FALSE;
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gdata->vmDead = JNI_FALSE;
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/* Get the JVMTI Env, IMPORTANT: Do this first! For jvmtiAllocate(). */
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error = JVM_FUNC_PTR(vm,GetEnv)
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(vm, (void **)&(gdata->jvmti), JVMTI_VERSION_1);
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// ANDROID-CHANGED: Check for ART_TI_VERSION_1_2 if we cannot get real JVMTI. This is done only
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// to support the userdebug debug-anything behavior.
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if (error != JNI_OK) {
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ERROR_MESSAGE(("JDWP unable to access JVMTI Version 1 (0x%x),"
|
" retrying using ART_TI instead since this might be a userdebug device."
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" JNIEnv's GetEnv() returned %d",
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JVMTI_VERSION_1, error));
|
// Try to get an ArtTiEnv instead
|
error = JVM_FUNC_PTR(vm,GetEnv)
|
(vm, (void **)&(gdata->jvmti), ART_TI_VERSION_1_2);
|
}
|
if (error != JNI_OK) {
|
ERROR_MESSAGE(("JDWP unable to access either JVMTI Version 1 (0x%x)"
|
" or ART_TI_VERSION_1_2 (0x%x),"
|
" is your J2SE a 1.5 or newer version?"
|
" JNIEnv's GetEnv() returned %d",
|
JVMTI_VERSION_1, ART_TI_VERSION_1_2, error));
|
forceExit(1); /* Kill entire process, no core dump */
|
}
|
|
/* Check to make sure the version of jvmti.h we compiled with
|
* matches the runtime version we are using.
|
*/
|
jvmtiCompileTimeMajorVersion = ( JVMTI_VERSION & JVMTI_VERSION_MASK_MAJOR )
|
>> JVMTI_VERSION_SHIFT_MAJOR;
|
jvmtiCompileTimeMinorVersion = ( JVMTI_VERSION & JVMTI_VERSION_MASK_MINOR )
|
>> JVMTI_VERSION_SHIFT_MINOR;
|
jvmtiCompileTimeMicroVersion = ( JVMTI_VERSION & JVMTI_VERSION_MASK_MICRO )
|
>> JVMTI_VERSION_SHIFT_MICRO;
|
|
/* Check for compatibility */
|
if ( !compatible_versions(jvmtiMajorVersion(), jvmtiMinorVersion(),
|
jvmtiCompileTimeMajorVersion, jvmtiCompileTimeMinorVersion) ) {
|
|
ERROR_MESSAGE(("This jdwp native library will not work with this VM's "
|
"version of JVMTI (%d.%d.%d), it needs JVMTI %d.%d[.%d].",
|
jvmtiMajorVersion(),
|
jvmtiMinorVersion(),
|
jvmtiMicroVersion(),
|
jvmtiCompileTimeMajorVersion,
|
jvmtiCompileTimeMinorVersion,
|
jvmtiCompileTimeMicroVersion));
|
|
/* Do not let VM get a fatal error, we don't want a core dump here. */
|
forceExit(1); /* Kill entire process, no core dump wanted */
|
}
|
|
// ANDROID-CHANGED: Load libnpt.so with no path to use the system linker config to find it.
|
dbgsysBuildLibName(npt_lib, sizeof(npt_lib), "", NPT_LIBNAME);
|
/* Npt and Utf function init */
|
NPT_INITIALIZE(npt_lib, &(gdata->npt), NPT_VERSION, NULL);
|
if (gdata->npt == NULL) {
|
ERROR_MESSAGE(("JDWP: unable to initialize NPT library"));
|
return JNI_ERR;
|
}
|
gdata->npt->utf = (gdata->npt->utfInitialize)(NULL);
|
if (gdata->npt->utf == NULL) {
|
ERROR_MESSAGE(("JDWP: UTF function initialization failed"));
|
return JNI_ERR;
|
}
|
|
/* Parse input options */
|
if (!parseOptions(options)) {
|
/* No message necessary, should have been printed out already */
|
/* Do not let VM get a fatal error, we don't want a core dump here. */
|
forceExit(1); /* Kill entire process, no core dump wanted */
|
}
|
|
LOG_MISC(("Onload: %s", options));
|
|
/* Get potential capabilities */
|
(void)memset(&potential_capabilities,0,sizeof(potential_capabilities));
|
error = JVMTI_FUNC_PTR(gdata->jvmti,GetPotentialCapabilities)
|
(gdata->jvmti, &potential_capabilities);
|
if (error != JVMTI_ERROR_NONE) {
|
ERROR_MESSAGE(("JDWP unable to get potential JVMTI capabilities: %s(%d)",
|
jvmtiErrorText(error), error));
|
return JNI_ERR;
|
}
|
|
/* Fill in ones that we must have */
|
(void)memset(&needed_capabilities,0,sizeof(needed_capabilities));
|
needed_capabilities.can_access_local_variables = 1;
|
needed_capabilities.can_generate_single_step_events = 1;
|
needed_capabilities.can_generate_exception_events = 1;
|
needed_capabilities.can_generate_frame_pop_events = 1;
|
needed_capabilities.can_generate_breakpoint_events = 1;
|
needed_capabilities.can_suspend = 1;
|
needed_capabilities.can_generate_method_entry_events = 1;
|
needed_capabilities.can_generate_method_exit_events = 1;
|
needed_capabilities.can_generate_garbage_collection_events = 1;
|
needed_capabilities.can_maintain_original_method_order = 1;
|
needed_capabilities.can_generate_monitor_events = 1;
|
needed_capabilities.can_tag_objects = 1;
|
/* ANDROID-CHANGED: Needed for how we implement commonRef tracking */
|
needed_capabilities.can_generate_object_free_events = 1;
|
|
/* And what potential ones that would be nice to have */
|
needed_capabilities.can_force_early_return
|
= potential_capabilities.can_force_early_return;
|
needed_capabilities.can_generate_field_modification_events
|
= potential_capabilities.can_generate_field_modification_events;
|
needed_capabilities.can_generate_field_access_events
|
= potential_capabilities.can_generate_field_access_events;
|
needed_capabilities.can_get_bytecodes
|
= potential_capabilities.can_get_bytecodes;
|
needed_capabilities.can_get_synthetic_attribute
|
= potential_capabilities.can_get_synthetic_attribute;
|
needed_capabilities.can_get_owned_monitor_info
|
= potential_capabilities.can_get_owned_monitor_info;
|
needed_capabilities.can_get_current_contended_monitor
|
= potential_capabilities.can_get_current_contended_monitor;
|
needed_capabilities.can_get_monitor_info
|
= potential_capabilities.can_get_monitor_info;
|
needed_capabilities.can_pop_frame
|
= potential_capabilities.can_pop_frame;
|
needed_capabilities.can_redefine_classes
|
= potential_capabilities.can_redefine_classes;
|
needed_capabilities.can_redefine_any_class
|
= potential_capabilities.can_redefine_any_class;
|
needed_capabilities.can_get_owned_monitor_stack_depth_info
|
= potential_capabilities.can_get_owned_monitor_stack_depth_info;
|
needed_capabilities.can_get_constant_pool
|
= potential_capabilities.can_get_constant_pool;
|
{
|
needed_capabilities.can_get_source_debug_extension = 1;
|
needed_capabilities.can_get_source_file_name = 1;
|
needed_capabilities.can_get_line_numbers = 1;
|
needed_capabilities.can_signal_thread
|
= potential_capabilities.can_signal_thread;
|
}
|
|
/* Add the capabilities */
|
error = JVMTI_FUNC_PTR(gdata->jvmti,AddCapabilities)
|
(gdata->jvmti, &needed_capabilities);
|
if (error != JVMTI_ERROR_NONE) {
|
ERROR_MESSAGE(("JDWP unable to get necessary JVMTI capabilities."));
|
forceExit(1); /* Kill entire process, no core dump wanted */
|
}
|
|
/* Initialize event number mapping tables */
|
eventIndexInit();
|
|
/* Set the initial JVMTI event notifications */
|
error = set_event_notification(JVMTI_ENABLE, EI_VM_DEATH);
|
if (error != JVMTI_ERROR_NONE) {
|
return JNI_ERR;
|
}
|
error = set_event_notification(JVMTI_ENABLE, EI_VM_INIT);
|
if (error != JVMTI_ERROR_NONE) {
|
return JNI_ERR;
|
}
|
if (initOnUncaught || (initOnException != NULL)) {
|
error = set_event_notification(JVMTI_ENABLE, EI_EXCEPTION);
|
if (error != JVMTI_ERROR_NONE) {
|
return JNI_ERR;
|
}
|
}
|
|
/* Set callbacks just for 3 functions */
|
(void)memset(&(gdata->callbacks),0,sizeof(gdata->callbacks));
|
gdata->callbacks.VMInit = &cbEarlyVMInit;
|
gdata->callbacks.VMDeath = &cbEarlyVMDeath;
|
gdata->callbacks.Exception = &cbEarlyException;
|
error = JVMTI_FUNC_PTR(gdata->jvmti,SetEventCallbacks)
|
(gdata->jvmti, &(gdata->callbacks), sizeof(gdata->callbacks));
|
if (error != JVMTI_ERROR_NONE) {
|
ERROR_MESSAGE(("JDWP unable to set JVMTI event callbacks: %s(%d)",
|
jvmtiErrorText(error), error));
|
return JNI_ERR;
|
}
|
|
// ANDROID-CHANGED: Find com.android.art.internal.ddm.process_chunk function if it exists.
|
if (find_extension_functions() != JNI_OK || gdata->raw_monitor_enter_no_suspend == NULL) {
|
ERROR_MESSAGE(("Fatal error while attempting to find the "
|
"com.android.art.internal.ddm.process_chunk extension function"));
|
return JNI_ERR;
|
}
|
|
LOG_MISC(("OnLoad: DONE"));
|
return JNI_OK;
|
}
|
|
JNIEXPORT void JNICALL
|
Agent_OnUnload(JavaVM *vm)
|
{
|
|
gdata->isLoaded = JNI_FALSE;
|
|
/* Cleanup, but make sure VM is alive before using JNI, and
|
* make sure JVMTI environment is ok before deallocating
|
* memory allocated through JVMTI, which all of it is.
|
*/
|
|
/*
|
* Close transport before exit
|
*/
|
if (transport_is_open()) {
|
transport_close();
|
}
|
}
|
|
/*
|
* Phase 2: Initial events. Phase 2 consists of waiting for the
|
* event that triggers full initialization. Under normal circumstances
|
* (initOnStartup == TRUE) this is the JVMTI_EVENT_VM_INIT event.
|
* Otherwise, we delay initialization until the app throws a
|
* particular exception. The triggering event invokes
|
* the bulk of the initialization, including creation of threads and
|
* monitors, transport setup, and installation of a new event callback which
|
* handles the complete set of events.
|
*
|
* Since the triggering event comes in on an application thread, some of the
|
* initialization is difficult to do here. Specifically, this thread along
|
* with all other app threads may need to be suspended until a debugger
|
* connects. These kinds of tasks are left to the third phase which is
|
* invoked by one of the spawned debugger threads, the event handler.
|
*/
|
|
/*
|
* Wait for a triggering event; then kick off debugger
|
* initialization. A different event callback will be installed by
|
* debugger initialization, and this function will not be called
|
* again.
|
*/
|
|
/*
|
* TO DO: Decide whether we need to protect this code with
|
* a lock. It might be too early to create a monitor safely (?).
|
*/
|
|
static void JNICALL
|
cbEarlyVMInit(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread)
|
{
|
LOG_CB(("cbEarlyVMInit"));
|
if ( gdata->vmDead ) {
|
EXIT_ERROR(AGENT_ERROR_INTERNAL,"VM dead at VM_INIT time");
|
}
|
if (initOnStartup)
|
initialize(env, thread, EI_VM_INIT);
|
vmInitialized = JNI_TRUE;
|
LOG_MISC(("END cbEarlyVMInit"));
|
}
|
|
static void
|
disposeEnvironment(jvmtiEnv *jvmti_env)
|
{
|
jvmtiError error;
|
|
error = JVMTI_FUNC_PTR(jvmti_env,DisposeEnvironment)(jvmti_env);
|
if ( error == JVMTI_ERROR_MUST_POSSESS_CAPABILITY )
|
error = JVMTI_ERROR_NONE; /* Hack! FIXUP when JVMTI has disposeEnv */
|
/* What should error return say? */
|
if (error != JVMTI_ERROR_NONE) {
|
ERROR_MESSAGE(("JDWP unable to dispose of JVMTI environment: %s(%d)",
|
jvmtiErrorText(error), error));
|
}
|
gdata->jvmti = NULL;
|
}
|
|
static void JNICALL
|
cbEarlyVMDeath(jvmtiEnv *jvmti_env, JNIEnv *env)
|
{
|
LOG_CB(("cbEarlyVMDeath"));
|
if ( gdata->vmDead ) {
|
EXIT_ERROR(AGENT_ERROR_INTERNAL,"VM died more than once");
|
}
|
disposeEnvironment(jvmti_env);
|
gdata->jvmti = NULL;
|
gdata->jvm = NULL;
|
gdata->vmDead = JNI_TRUE;
|
LOG_MISC(("END cbEarlyVMDeath"));
|
}
|
|
static void JNICALL
|
cbEarlyException(jvmtiEnv *jvmti_env, JNIEnv *env,
|
jthread thread, jmethodID method, jlocation location,
|
jobject exception,
|
jmethodID catch_method, jlocation catch_location)
|
{
|
jvmtiError error;
|
jthrowable currentException;
|
|
LOG_CB(("cbEarlyException: thread=%p", thread));
|
|
if ( gdata->vmDead ) {
|
EXIT_ERROR(AGENT_ERROR_INTERNAL,"VM dead at initial Exception event");
|
}
|
if (!vmInitialized) {
|
LOG_MISC(("VM is not initialized yet"));
|
return;
|
}
|
|
/*
|
* We want to preserve any current exception that might get wiped
|
* out during event handling (e.g. JNI calls). We have to rely on
|
* space for the local reference on the current frame because
|
* doing a PushLocalFrame here might itself generate an exception.
|
*/
|
|
currentException = JNI_FUNC_PTR(env,ExceptionOccurred)(env);
|
JNI_FUNC_PTR(env,ExceptionClear)(env);
|
|
if (initOnUncaught && catch_method == NULL) {
|
|
LOG_MISC(("Initializing on uncaught exception"));
|
initialize(env, thread, EI_EXCEPTION);
|
|
} else if (initOnException != NULL) {
|
|
jclass clazz;
|
|
/* Get class of exception thrown */
|
clazz = JNI_FUNC_PTR(env,GetObjectClass)(env, exception);
|
if ( clazz != NULL ) {
|
char *signature = NULL;
|
/* initing on throw, check */
|
error = classSignature(clazz, &signature, NULL);
|
LOG_MISC(("Checking specific exception: looking for %s, got %s",
|
initOnException, signature));
|
if ( (error==JVMTI_ERROR_NONE) &&
|
(strcmp(signature, initOnException) == 0)) {
|
LOG_MISC(("Initializing on specific exception"));
|
initialize(env, thread, EI_EXCEPTION);
|
} else {
|
error = AGENT_ERROR_INTERNAL; /* Just to cause restore */
|
}
|
if ( signature != NULL ) {
|
jvmtiDeallocate(signature);
|
}
|
} else {
|
error = AGENT_ERROR_INTERNAL; /* Just to cause restore */
|
}
|
|
/* If initialize didn't happen, we need to restore things */
|
if ( error != JVMTI_ERROR_NONE ) {
|
/*
|
* Restore exception state from before callback call
|
*/
|
LOG_MISC(("No initialization, didn't find right exception"));
|
if (currentException != NULL) {
|
JNI_FUNC_PTR(env,Throw)(env, currentException);
|
} else {
|
JNI_FUNC_PTR(env,ExceptionClear)(env);
|
}
|
}
|
|
}
|
|
LOG_MISC(("END cbEarlyException"));
|
|
}
|
|
typedef struct EnumerateArg {
|
jboolean isServer;
|
jdwpError error;
|
jint startCount;
|
} EnumerateArg;
|
|
static jboolean
|
startTransport(void *item, void *arg)
|
{
|
TransportSpec *transport = item;
|
EnumerateArg *enumArg = arg;
|
jdwpError serror;
|
|
LOG_MISC(("Begin startTransport"));
|
serror = transport_startTransport(enumArg->isServer, transport->name,
|
transport->address, transport->timeout);
|
if (serror != JDWP_ERROR(NONE)) {
|
ERROR_MESSAGE(("JDWP Transport %s failed to initialize, %s(%d)",
|
transport->name, jdwpErrorText(serror), serror));
|
enumArg->error = serror;
|
} else {
|
/* (Don't overwrite any previous error) */
|
|
enumArg->startCount++;
|
}
|
|
LOG_MISC(("End startTransport"));
|
|
return JNI_TRUE; /* Always continue, even if there was an error */
|
}
|
|
static void
|
signalInitComplete(void)
|
{
|
/*
|
* Initialization is complete
|
*/
|
LOG_MISC(("signal initialization complete"));
|
debugMonitorEnter(initMonitor);
|
initComplete = JNI_TRUE;
|
debugMonitorNotifyAll(initMonitor);
|
debugMonitorExit(initMonitor);
|
}
|
|
/*
|
* Determine if initialization is complete.
|
*/
|
jboolean
|
debugInit_isInitComplete(void)
|
{
|
return initComplete;
|
}
|
|
/*
|
* Wait for all initialization to complete.
|
*/
|
void
|
debugInit_waitInitComplete(void)
|
{
|
debugMonitorEnter(initMonitor);
|
while (!initComplete) {
|
debugMonitorWait(initMonitor);
|
}
|
debugMonitorExit(initMonitor);
|
}
|
|
/* All process exit() calls come from here */
|
void
|
forceExit(int exit_code)
|
{
|
/* make sure the transport is closed down before we exit() */
|
transport_close();
|
exit(exit_code);
|
}
|
|
/* All JVM fatal error exits lead here (e.g. we need to kill the VM). */
|
static void
|
jniFatalError(JNIEnv *env, const char *msg, jvmtiError error, int exit_code)
|
{
|
JavaVM *vm;
|
char buf[512];
|
|
gdata->vmDead = JNI_TRUE;
|
if ( msg==NULL )
|
msg = "UNKNOWN REASON";
|
vm = gdata->jvm;
|
if ( env==NULL && vm!=NULL ) {
|
jint rc = (*((*vm)->GetEnv))(vm, (void **)&env, JNI_VERSION_1_2);
|
if (rc != JNI_OK ) {
|
env = NULL;
|
}
|
}
|
if ( error != JVMTI_ERROR_NONE ) {
|
(void)snprintf(buf, sizeof(buf), "JDWP %s, jvmtiError=%s(%d)",
|
msg, jvmtiErrorText(error), error);
|
} else {
|
(void)snprintf(buf, sizeof(buf), "JDWP %s", buf);
|
}
|
if (env != NULL) {
|
(*((*env)->FatalError))(env, buf);
|
} else {
|
/* Should rarely ever reach here, means VM is really dead */
|
print_message(stderr, "ERROR: JDWP: ", "\n",
|
"Can't call JNI FatalError(NULL, \"%s\")", buf);
|
}
|
forceExit(exit_code);
|
}
|
|
/*
|
* Initialize debugger back end modules
|
*/
|
static void
|
initialize(JNIEnv *env, jthread thread, EventIndex triggering_ei)
|
{
|
jvmtiError error;
|
EnumerateArg arg;
|
jbyte suspendPolicy;
|
|
LOG_MISC(("Begin initialize()"));
|
currentSessionID = 0;
|
initComplete = JNI_FALSE;
|
|
if ( gdata->vmDead ) {
|
EXIT_ERROR(AGENT_ERROR_INTERNAL,"VM dead at initialize() time");
|
}
|
|
/* Turn off the initial JVMTI event notifications */
|
error = set_event_notification(JVMTI_DISABLE, EI_EXCEPTION);
|
if (error != JVMTI_ERROR_NONE) {
|
EXIT_ERROR(error, "unable to disable JVMTI event notification");
|
}
|
error = set_event_notification(JVMTI_DISABLE, EI_VM_INIT);
|
if (error != JVMTI_ERROR_NONE) {
|
EXIT_ERROR(error, "unable to disable JVMTI event notification");
|
}
|
error = set_event_notification(JVMTI_DISABLE, EI_VM_DEATH);
|
if (error != JVMTI_ERROR_NONE) {
|
EXIT_ERROR(error, "unable to disable JVMTI event notification");
|
}
|
|
/* Remove initial event callbacks */
|
(void)memset(&(gdata->callbacks),0,sizeof(gdata->callbacks));
|
error = JVMTI_FUNC_PTR(gdata->jvmti,SetEventCallbacks)
|
(gdata->jvmti, &(gdata->callbacks), sizeof(gdata->callbacks));
|
if (error != JVMTI_ERROR_NONE) {
|
EXIT_ERROR(error, "unable to clear JVMTI callbacks");
|
}
|
|
commonRef_initialize();
|
util_initialize(env);
|
threadControl_initialize();
|
stepControl_initialize();
|
invoker_initialize();
|
debugDispatch_initialize();
|
classTrack_initialize(env);
|
debugLoop_initialize();
|
|
// ANDROID-CHANGED: Set up DDM
|
DDM_initialize();
|
|
// ANDROID-CHANGED: Take over relevant VMDebug APIs.
|
vmDebug_initalize(env);
|
|
initMonitor = debugMonitorCreate("JDWP Initialization Monitor");
|
|
|
/*
|
* Initialize transports
|
*/
|
arg.isServer = isServer;
|
arg.error = JDWP_ERROR(NONE);
|
arg.startCount = 0;
|
|
transport_initialize();
|
(void)bagEnumerateOver(transports, startTransport, &arg);
|
|
/*
|
* Exit with an error only if
|
* 1) none of the transports was successfully started, and
|
* 2) the application has not yet started running
|
*/
|
if ((arg.error != JDWP_ERROR(NONE)) &&
|
(arg.startCount == 0) &&
|
initOnStartup) {
|
EXIT_ERROR(map2jvmtiError(arg.error), "No transports initialized");
|
}
|
|
eventHandler_initialize(currentSessionID);
|
|
signalInitComplete();
|
|
transport_waitForConnection();
|
|
suspendPolicy = suspendOnInit ? JDWP_SUSPEND_POLICY(ALL)
|
: JDWP_SUSPEND_POLICY(NONE);
|
// ANDROID-CHANGED: Don't send any event if we are actually in Agent_OnAttach.
|
if (isInAttach) {
|
// Do Nothing.
|
} else if (triggering_ei == EI_VM_INIT) {
|
LOG_MISC(("triggering_ei == EI_VM_INIT"));
|
eventHelper_reportVMInit(env, currentSessionID, thread, suspendPolicy);
|
} else {
|
/*
|
* TO DO: Kludgy way of getting the triggering event to the
|
* just-attached debugger. It would be nice to make this a little
|
* cleaner. There is also a race condition where other events
|
* can get in the queue (from other not-yet-suspended threads)
|
* before this one does. (Also need to handle allocation error below?)
|
*/
|
EventInfo info;
|
struct bag *initEventBag;
|
LOG_MISC(("triggering_ei != EI_VM_INIT"));
|
initEventBag = eventHelper_createEventBag();
|
(void)memset(&info,0,sizeof(info));
|
info.ei = triggering_ei;
|
eventHelper_recordEvent(&info, 0, suspendPolicy, initEventBag);
|
(void)eventHelper_reportEvents(currentSessionID, initEventBag);
|
bagDestroyBag(initEventBag);
|
}
|
|
if ( gdata->vmDead ) {
|
EXIT_ERROR(AGENT_ERROR_INTERNAL,"VM dead before initialize() completes");
|
}
|
LOG_MISC(("End initialize()"));
|
}
|
|
/*
|
* Restore all static data to the initialized state so that another
|
* debugger can connect properly later.
|
*/
|
void
|
debugInit_reset(JNIEnv *env)
|
{
|
EnumerateArg arg;
|
|
LOG_MISC(("debugInit_reset() beginning"));
|
|
currentSessionID++;
|
initComplete = JNI_FALSE;
|
|
eventHandler_reset(currentSessionID);
|
transport_reset();
|
debugDispatch_reset();
|
invoker_reset();
|
stepControl_reset();
|
threadControl_reset();
|
util_reset();
|
commonRef_reset(env);
|
classTrack_reset();
|
|
/*
|
* If this is a server, we are now ready to accept another connection.
|
* If it's a client, then we've cleaned up some (more should be added
|
* later) and we're done.
|
*/
|
if (isServer) {
|
arg.isServer = JNI_TRUE;
|
arg.error = JDWP_ERROR(NONE);
|
arg.startCount = 0;
|
(void)bagEnumerateOver(transports, startTransport, &arg);
|
|
signalInitComplete();
|
|
transport_waitForConnection();
|
} else {
|
signalInitComplete(); /* Why? */
|
}
|
|
LOG_MISC(("debugInit_reset() completed."));
|
}
|
|
|
char *
|
debugInit_launchOnInit(void)
|
{
|
return launchOnInit;
|
}
|
|
jboolean
|
debugInit_suspendOnInit(void)
|
{
|
return suspendOnInit;
|
}
|
|
/*
|
* code below is shamelessly swiped from hprof.
|
*/
|
|
static int
|
get_tok(char **src, char *buf, int buflen, char sep)
|
{
|
int i;
|
char *p = *src;
|
for (i = 0; i < buflen; i++) {
|
if (p[i] == 0 || p[i] == sep) {
|
buf[i] = 0;
|
if (p[i] == sep) {
|
i++;
|
}
|
*src += i;
|
return i;
|
}
|
buf[i] = p[i];
|
}
|
/* overflow */
|
return 0;
|
}
|
|
static void
|
printUsage(void)
|
{
|
TTY_MESSAGE((
|
" Java Debugger JDWP Agent Library\n"
|
" --------------------------------\n"
|
"\n"
|
" (see http://java.sun.com/products/jpda for more information)\n"
|
"\n"
|
"jdwp usage: java " AGENTLIB "=[help]|[<option>=<value>, ...]\n"
|
"\n"
|
"Option Name and Value Description Default\n"
|
"--------------------- ----------- -------\n"
|
"suspend=y|n wait on startup? y\n"
|
"transport=<name> transport spec none\n"
|
"address=<listen/attach address> transport spec \"\"\n"
|
"server=y|n listen for debugger? n\n"
|
"launch=<command line> run debugger on event none\n"
|
"onthrow=<exception name> debug on throw none\n"
|
"onuncaught=y|n debug on any uncaught? n\n"
|
"timeout=<timeout value> for listen/attach in milliseconds n\n"
|
"mutf8=y|n output modified utf-8 n\n"
|
"quiet=y|n control over terminal messages n\n"
|
"\n"
|
"Obsolete Options\n"
|
"----------------\n"
|
"strict=y|n\n"
|
"stdalloc=y|n\n"
|
"\n"
|
"Examples\n"
|
"--------\n"
|
" - Using sockets connect to a debugger at a specific address:\n"
|
" java " AGENTLIB "=transport=dt_socket,address=localhost:8000 ...\n"
|
" - Using sockets listen for a debugger to attach:\n"
|
" java " AGENTLIB "=transport=dt_socket,server=y,suspend=y ...\n"
|
"\n"
|
"Notes\n"
|
"-----\n"
|
" - A timeout value of 0 (the default) is no timeout.\n"
|
"\n"
|
"Warnings\n"
|
"--------\n"
|
" - The older " XRUN " interface can still be used, but will be removed in\n"
|
" a future release, for example:\n"
|
" java " XDEBUG " " XRUN ":[help]|[<option>=<value>, ...]\n"
|
));
|
|
#ifdef DEBUG
|
|
TTY_MESSAGE((
|
"\n"
|
"Debugging Options Description Default\n"
|
"----------------- ----------- -------\n"
|
"pause=y|n pause to debug PID n\n"
|
"coredump=y|n coredump at exit n\n"
|
"errorexit=y|n exit on any error n\n"
|
/* ANDROID-CHANGED: Added directlog */
|
"directlog do not add pid to name of logfile n\n"
|
"logfile=filename name of log file none\n"
|
"logflags=flags log flags (bitmask) none\n"
|
" JVM calls = 0x001\n"
|
" JNI calls = 0x002\n"
|
" JVMTI calls = 0x004\n"
|
" misc events = 0x008\n"
|
" step logs = 0x010\n"
|
" locations = 0x020\n"
|
" callbacks = 0x040\n"
|
" errors = 0x080\n"
|
" everything = 0xfff\n"
|
"debugflags=flags debug flags (bitmask) none\n"
|
" USE_ITERATE_THROUGH_HEAP 0x01\n"
|
"\n"
|
"Environment Variables\n"
|
"---------------------\n"
|
"_JAVA_JDWP_OPTIONS\n"
|
" Options can be added externally via this environment variable.\n"
|
" Anything contained in it will get a comma prepended to it (if needed),\n"
|
" then it will be added to the end of the options supplied via the\n"
|
" " XRUN " or " AGENTLIB " command line option.\n"
|
));
|
|
#endif
|
|
|
|
}
|
|
static jboolean checkAddress(void *bagItem, void *arg)
|
{
|
TransportSpec *spec = (TransportSpec *)bagItem;
|
if (spec->address == NULL) {
|
ERROR_MESSAGE(("JDWP Non-server transport %s must have a connection "
|
"address specified through the 'address=' option",
|
spec->name));
|
return JNI_FALSE;
|
} else {
|
return JNI_TRUE;
|
}
|
}
|
|
static char *
|
add_to_options(char *options, char *new_options)
|
{
|
size_t originalLength;
|
char *combinedOptions;
|
|
/*
|
* Allocate enough space for both strings and
|
* comma in between.
|
*/
|
originalLength = strlen(options);
|
combinedOptions = jvmtiAllocate((jint)originalLength + 1 +
|
(jint)strlen(new_options) + 1);
|
if (combinedOptions == NULL) {
|
return NULL;
|
}
|
|
(void)strcpy(combinedOptions, options);
|
(void)strcat(combinedOptions, ",");
|
(void)strcat(combinedOptions, new_options);
|
|
return combinedOptions;
|
}
|
|
static jboolean
|
get_boolean(char **pstr, jboolean *answer)
|
{
|
char buf[80];
|
*answer = JNI_FALSE;
|
/*LINTED*/
|
if (get_tok(pstr, buf, (int)sizeof(buf), ',')) {
|
if (strcmp(buf, "y") == 0) {
|
*answer = JNI_TRUE;
|
return JNI_TRUE;
|
} else if (strcmp(buf, "n") == 0) {
|
*answer = JNI_FALSE;
|
return JNI_TRUE;
|
}
|
}
|
return JNI_FALSE;
|
}
|
|
/* atexit() callback */
|
static void
|
atexit_finish_logging(void)
|
{
|
/* Normal exit(0) (not _exit()) may only reach here */
|
finish_logging(); /* Only first call matters */
|
}
|
|
static jboolean
|
parseOptions(char *options)
|
{
|
TransportSpec *currentTransport = NULL;
|
char *end;
|
char *current;
|
int length;
|
char *str;
|
char *errmsg;
|
|
/* Set defaults */
|
gdata->assertOn = DEFAULT_ASSERT_ON;
|
gdata->assertFatal = DEFAULT_ASSERT_FATAL;
|
/* ANDROID-CHANGED: Add directlog */
|
directlog = JNI_FALSE;
|
logfile = DEFAULT_LOGFILE;
|
// ANDROID-CHANGED: By default we assume ddms is off initially.
|
gdata->ddmInitiallyActive = JNI_FALSE;
|
|
/* Options being NULL will end up being an error. */
|
if (options == NULL) {
|
options = "";
|
}
|
|
/* Check for "help" BEFORE we add any environmental settings */
|
if ((strcmp(options, "help")) == 0) {
|
printUsage();
|
forceExit(0); /* Kill entire process, no core dump wanted */
|
}
|
|
/* These buffers are never freed */
|
{
|
char *envOptions;
|
|
/*
|
* Add environmentally specified options.
|
*/
|
envOptions = getenv("_JAVA_JDWP_OPTIONS");
|
if (envOptions != NULL) {
|
options = add_to_options(options, envOptions);
|
if ( options==NULL ) {
|
EXIT_ERROR(AGENT_ERROR_OUT_OF_MEMORY,"options");
|
}
|
}
|
|
/*
|
* Allocate a buffer for names derived from option strings. It should
|
* never be longer than the original options string itself.
|
* Also keep a copy of the options in gdata->options.
|
*/
|
length = (int)strlen(options);
|
gdata->options = jvmtiAllocate(length + 1);
|
if (gdata->options == NULL) {
|
EXIT_ERROR(AGENT_ERROR_OUT_OF_MEMORY,"options");
|
}
|
(void)strcpy(gdata->options, options);
|
names = jvmtiAllocate(length + 1);
|
if (names == NULL) {
|
EXIT_ERROR(AGENT_ERROR_OUT_OF_MEMORY,"options");
|
}
|
|
transports = bagCreateBag(sizeof(TransportSpec), 3);
|
if (transports == NULL) {
|
EXIT_ERROR(AGENT_ERROR_OUT_OF_MEMORY,"transports");
|
}
|
|
}
|
|
current = names;
|
end = names + length;
|
str = options;
|
|
while (*str) {
|
char buf[100];
|
/*LINTED*/
|
if (!get_tok(&str, buf, (int)sizeof(buf), '=')) {
|
goto syntax_error;
|
}
|
if (strcmp(buf, "transport") == 0) {
|
currentTransport = bagAdd(transports);
|
/*LINTED*/
|
if (!get_tok(&str, current, (int)(end - current), ',')) {
|
goto syntax_error;
|
}
|
currentTransport->name = current;
|
current += strlen(current) + 1;
|
} else if (strcmp(buf, "address") == 0) {
|
if (currentTransport == NULL) {
|
errmsg = "address specified without transport";
|
goto bad_option_with_errmsg;
|
}
|
/*LINTED*/
|
if (!get_tok(&str, current, (int)(end - current), ',')) {
|
goto syntax_error;
|
}
|
currentTransport->address = current;
|
current += strlen(current) + 1;
|
} else if (strcmp(buf, "timeout") == 0) {
|
if (currentTransport == NULL) {
|
errmsg = "timeout specified without transport";
|
goto bad_option_with_errmsg;
|
}
|
/*LINTED*/
|
if (!get_tok(&str, current, (int)(end - current), ',')) {
|
goto syntax_error;
|
}
|
currentTransport->timeout = atol(current);
|
current += strlen(current) + 1;
|
} else if (strcmp(buf, "launch") == 0) {
|
/*LINTED*/
|
if (!get_tok(&str, current, (int)(end - current), ',')) {
|
goto syntax_error;
|
}
|
launchOnInit = current;
|
current += strlen(current) + 1;
|
} else if (strcmp(buf, "onthrow") == 0) {
|
/* Read class name and convert in place to a signature */
|
*current = 'L';
|
/*LINTED*/
|
if (!get_tok(&str, current + 1, (int)(end - current - 1), ',')) {
|
goto syntax_error;
|
}
|
initOnException = current;
|
while (*current != '\0') {
|
if (*current == '.') {
|
*current = '/';
|
}
|
current++;
|
}
|
*current++ = ';';
|
*current++ = '\0';
|
} else if (strcmp(buf, "assert") == 0) {
|
/*LINTED*/
|
if (!get_tok(&str, current, (int)(end - current), ',')) {
|
goto syntax_error;
|
}
|
if (strcmp(current, "y") == 0) {
|
gdata->assertOn = JNI_TRUE;
|
gdata->assertFatal = JNI_FALSE;
|
} else if (strcmp(current, "fatal") == 0) {
|
gdata->assertOn = JNI_TRUE;
|
gdata->assertFatal = JNI_TRUE;
|
} else if (strcmp(current, "n") == 0) {
|
gdata->assertOn = JNI_FALSE;
|
gdata->assertFatal = JNI_FALSE;
|
} else {
|
goto syntax_error;
|
}
|
current += strlen(current) + 1;
|
} else if (strcmp(buf, "pause") == 0) {
|
if ( !get_boolean(&str, &dopause) ) {
|
goto syntax_error;
|
}
|
if ( dopause ) {
|
do_pause();
|
}
|
} else if (strcmp(buf, "coredump") == 0) {
|
if ( !get_boolean(&str, &docoredump) ) {
|
goto syntax_error;
|
}
|
} else if (strcmp(buf, "errorexit") == 0) {
|
if ( !get_boolean(&str, &(gdata->doerrorexit)) ) {
|
goto syntax_error;
|
}
|
} else if (strcmp(buf, "exitpause") == 0) {
|
errmsg = "The exitpause option removed, use -XX:OnError";
|
goto bad_option_with_errmsg;
|
} else if (strcmp(buf, "precrash") == 0) {
|
errmsg = "The precrash option removed, use -XX:OnError";
|
goto bad_option_with_errmsg;
|
} else if (strcmp(buf, "directlog") == 0) {
|
/* ANDROID-CHANGED: Added directlog */
|
/*LINTED*/
|
if ( !get_boolean(&str, &directlog) ) {
|
goto syntax_error;
|
}
|
} else if (strcmp(buf, "logfile") == 0) {
|
/*LINTED*/
|
if (!get_tok(&str, current, (int)(end - current), ',')) {
|
goto syntax_error;
|
}
|
logfile = current;
|
current += strlen(current) + 1;
|
} else if (strcmp(buf, "logflags") == 0) {
|
/*LINTED*/
|
if (!get_tok(&str, current, (int)(end - current), ',')) {
|
goto syntax_error;
|
}
|
/*LINTED*/
|
logflags = (unsigned)strtol(current, NULL, 0);
|
} else if (strcmp(buf, "debugflags") == 0) {
|
/*LINTED*/
|
if (!get_tok(&str, current, (int)(end - current), ',')) {
|
goto syntax_error;
|
}
|
/*LINTED*/
|
gdata->debugflags = (unsigned)strtol(current, NULL, 0);
|
} else if ( strcmp(buf, "suspend")==0 ) {
|
if ( !get_boolean(&str, &suspendOnInit) ) {
|
goto syntax_error;
|
}
|
} else if ( strcmp(buf, "server")==0 ) {
|
if ( !get_boolean(&str, &isServer) ) {
|
goto syntax_error;
|
}
|
} else if ( strcmp(buf, "strict")==0 ) { /* Obsolete, but accept it */
|
if ( !get_boolean(&str, &isStrict) ) {
|
goto syntax_error;
|
}
|
} else if ( strcmp(buf, "quiet")==0 ) {
|
if ( !get_boolean(&str, &(gdata->quiet)) ) {
|
goto syntax_error;
|
}
|
} else if ( strcmp(buf, "onuncaught")==0 ) {
|
if ( !get_boolean(&str, &initOnUncaught) ) {
|
goto syntax_error;
|
}
|
} else if ( strcmp(buf, "mutf8")==0 ) {
|
if ( !get_boolean(&str, &(gdata->modifiedUtf8)) ) {
|
goto syntax_error;
|
}
|
} else if ( strcmp(buf, "stdalloc")==0 ) { /* Obsolete, but accept it */
|
if ( !get_boolean(&str, &useStandardAlloc) ) {
|
goto syntax_error;
|
}
|
// ANDROID-CHANGED: Need to be able to tell if ddm is initially running.
|
} else if ( strcmp(buf, "ddm_already_active")==0 ) {
|
if ( !get_boolean(&str, &(gdata->ddmInitiallyActive)) ) {
|
goto syntax_error;
|
}
|
} else {
|
goto syntax_error;
|
}
|
}
|
|
/* Setup logging now */
|
if ( logfile!=NULL ) {
|
/* ANDROID-CHANGED: Add directlog */
|
setup_logging(logfile, logflags, directlog);
|
(void)atexit(&atexit_finish_logging);
|
}
|
|
if (bagSize(transports) == 0) {
|
errmsg = "no transport specified";
|
goto bad_option_with_errmsg;
|
}
|
|
/*
|
* TO DO: Remove when multiple transports are allowed. (replace with
|
* check below.
|
*/
|
if (bagSize(transports) > 1) {
|
errmsg = "multiple transports are not supported in this release";
|
goto bad_option_with_errmsg;
|
}
|
|
|
if (!isServer) {
|
jboolean specified = bagEnumerateOver(transports, checkAddress, NULL);
|
if (!specified) {
|
/* message already printed */
|
goto bad_option_no_msg;
|
}
|
}
|
|
/*
|
* The user has selected to wait for an exception before init happens
|
*/
|
if ((initOnException != NULL) || (initOnUncaught)) {
|
initOnStartup = JNI_FALSE;
|
|
if (launchOnInit == NULL) {
|
/*
|
* These rely on the launch=/usr/bin/foo
|
* suboption, so it is an error if user did not
|
* provide one.
|
*/
|
errmsg = "Specify launch=<command line> when using onthrow or onuncaught suboption";
|
goto bad_option_with_errmsg;
|
}
|
}
|
|
return JNI_TRUE;
|
|
syntax_error:
|
ERROR_MESSAGE(("JDWP option syntax error: %s=%s", AGENTLIB, options));
|
return JNI_FALSE;
|
|
bad_option_with_errmsg:
|
ERROR_MESSAGE(("JDWP %s: %s=%s", errmsg, AGENTLIB, options));
|
return JNI_FALSE;
|
|
bad_option_no_msg:
|
ERROR_MESSAGE(("JDWP %s: %s=%s", "invalid option", AGENTLIB, options));
|
return JNI_FALSE;
|
}
|
|
/* All normal exit doors lead here */
|
void
|
debugInit_exit(jvmtiError error, const char *msg)
|
{
|
enum exit_codes { EXIT_NO_ERRORS = 0, EXIT_JVMTI_ERROR = 1, EXIT_TRANSPORT_ERROR = 2 };
|
|
// Prepare to exit. Log error and finish logging
|
LOG_MISC(("Exiting with error %s(%d): %s", jvmtiErrorText(error), error,
|
((msg == NULL) ? "" : msg)));
|
|
// coredump requested by command line. Keep JVMTI data dirty
|
if (error != JVMTI_ERROR_NONE && docoredump) {
|
LOG_MISC(("Dumping core as requested by command line"));
|
finish_logging();
|
abort();
|
}
|
|
finish_logging();
|
|
// Cleanup the JVMTI if we have one
|
if (gdata != NULL) {
|
gdata->vmDead = JNI_TRUE;
|
if (gdata->jvmti != NULL) {
|
// Dispose of jvmti (gdata->jvmti becomes NULL)
|
disposeEnvironment(gdata->jvmti);
|
}
|
}
|
|
// We are here with no errors. Kill entire process and exit with zero exit code
|
if (error == JVMTI_ERROR_NONE) {
|
forceExit(EXIT_NO_ERRORS);
|
return;
|
}
|
|
// No transport initilized.
|
// As we don't have any details here exiting with separate exit code
|
if (error == AGENT_ERROR_TRANSPORT_INIT) {
|
forceExit(EXIT_TRANSPORT_ERROR);
|
return;
|
}
|
|
// We have JVMTI error. Call hotspot jni_FatalError handler
|
jniFatalError(NULL, msg, error, EXIT_JVMTI_ERROR);
|
|
// hotspot calls os:abort() so we should never reach code below,
|
// but guard against possible hotspot changes
|
|
// Last chance to die, this kills the entire process.
|
forceExit(EXIT_JVMTI_ERROR);
|
}
|
|
// ANDROID-CHANGED: Support jdwp loading with OnAttach.
|
static jint doInitializeOnAttach(JavaVM* vm) {
|
JNIEnv* jnienv = NULL;
|
jvmtiError error = JVM_FUNC_PTR(vm,GetEnv)
|
(vm, (void **)&(jnienv), JNI_VERSION_1_6);
|
if (error != JNI_OK) {
|
ERROR_MESSAGE(("JDWP unable to access jni (0x%x),"
|
" is your J2SE a 1.6 or newer version?"
|
" JNIEnv's GetEnv() returned %d",
|
JNI_VERSION_1_6, error));
|
return JNI_ERR;
|
}
|
jthread currentThread;
|
error = JVMTI_FUNC_PTR(gdata->jvmti,GetCurrentThread)
|
(gdata->jvmti, ¤tThread);
|
if (error != JVMTI_ERROR_NONE) {
|
ERROR_MESSAGE(("JDWP unable to get current thread during agent attach: %s(%d)",
|
jvmtiErrorText(error), error));
|
return JNI_ERR;
|
}
|
// Pretend to send the VM_INIT event.
|
cbEarlyVMInit(gdata->jvmti, jnienv, currentThread);
|
return JNI_OK;
|
}
|
|
/* OnAttach startup:
|
* ANDROID-CHANGED: We need this to support the way android normally uses debuggers.
|
*/
|
JNIEXPORT jint JNICALL
|
Agent_OnAttach(JavaVM* vm, char* options, void* reserved)
|
{
|
isInAttach = JNI_TRUE;
|
// SuspendOnInit should default to false in late-attach scenario since it is not supported.
|
suspendOnInit = JNI_FALSE;
|
if (Agent_OnLoad(vm, options, reserved) != JNI_OK) {
|
return JNI_ERR;
|
}
|
jint res;
|
if (suspendOnInit) {
|
ERROR_MESSAGE(("JDWP cannot suspend all threads when performing late-attach."));
|
return JNI_ERR;
|
} else if (!initOnUncaught && (initOnException == NULL)) {
|
res = doInitializeOnAttach(vm);
|
} else {
|
res = JNI_OK;
|
}
|
isInAttach = JNI_FALSE;
|
return res;
|
}
|
