287 lines
9.4 KiB
C++
287 lines
9.4 KiB
C++
/*
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* Copyright (c) 2003, 2018, 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.
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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
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 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 <stdio.h>
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#include <string.h>
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#include <inttypes.h>
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#include "jvmti.h"
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#include "agent_common.h"
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#include "JVMTITools.h"
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extern "C" {
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#define PASSED 0
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#define STATUS_FAILED 2
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typedef struct {
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const char *cls_sig;
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const char *name;
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const char *sig;
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jlocation loc;
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} pop_info;
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static jvmtiEnv *jvmti = NULL;
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static jvmtiCapabilities caps;
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static jvmtiEventCallbacks callbacks;
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static jint result = PASSED;
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static jboolean printdump = JNI_FALSE;
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static size_t eventsExpected = 0;
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static size_t eventsCount = 0;
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static pop_info pops[] = {
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{ "Lnsk/jvmti/FramePop/framepop001;", "chain", "()V", 0 },
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{ "Lnsk/jvmti/FramePop/framepop001a;", "dummy", "()V", 3 },
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};
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void JNICALL Breakpoint(jvmtiEnv *jvmti_env, JNIEnv *env,
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jthread thr, jmethodID method, jlocation location) {
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jvmtiError err;
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err = jvmti_env->NotifyFramePop(thr, 0);
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if (err == JVMTI_ERROR_NONE) {
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eventsExpected++;
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} else {
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printf("(NotifyFramePop#0) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti_env->NotifyFramePop(thr, 1);
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if (err == JVMTI_ERROR_NONE) {
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eventsExpected++;
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} else {
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printf("(NotifyFramePop#1) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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void JNICALL FramePop(jvmtiEnv *jvmti_env, JNIEnv *env,
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jthread thr, jmethodID method, jboolean wasPopedByException) {
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jvmtiError err;
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char *cls_sig, *name, *sig, *generic;
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jclass cls;
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jmethodID mid;
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jlocation loc;
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if (printdump == JNI_TRUE) {
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printf(">>> retrieving frame pop info ...\n");
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}
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err = jvmti_env->GetMethodDeclaringClass(method, &cls);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetMethodDeclaringClass) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti_env->GetClassSignature(cls, &cls_sig, &generic);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetClassSignature) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti_env->GetMethodName(method, &name, &sig, &generic);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetMethodName) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti_env->GetFrameLocation(thr, 0, &mid, &loc);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetFrameLocation) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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if (printdump == JNI_TRUE) {
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printf(">>> class: \"%s\"\n", cls_sig);
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printf(">>> method: \"%s%s\"\n", name, sig);
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printf(">>> location: 0x%x%08x\n",
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(jint)(loc >> 32), (jint)loc);
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printf(">>> ... done\n");
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}
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if (eventsCount < sizeof(pops)/sizeof(pop_info)) {
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if (cls_sig == NULL ||
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strcmp(cls_sig, pops[eventsCount].cls_sig) != 0) {
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printf("(pop#%" PRIuPTR ") wrong class: \"%s\"",
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eventsCount, cls_sig);
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printf(", expected: \"%s\"\n", pops[eventsCount].cls_sig);
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result = STATUS_FAILED;
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}
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if (name == NULL ||
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strcmp(name, pops[eventsCount].name) != 0) {
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printf("(pop#%" PRIuPTR ") wrong method name: \"%s\"",
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eventsCount, name);
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printf(", expected: \"%s\"\n", pops[eventsCount].name);
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result = STATUS_FAILED;
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}
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if (sig == NULL ||
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strcmp(sig, pops[eventsCount].sig) != 0) {
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printf("(pop#%" PRIuPTR ") wrong method sig: \"%s\"",
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eventsCount, sig);
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printf(", expected: \"%s\"\n", pops[eventsCount].sig);
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result = STATUS_FAILED;
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}
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if (loc != pops[eventsCount].loc) {
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printf("(pop#%" PRIuPTR ") wrong location: 0x%x%08x",
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eventsCount, (jint)(loc >> 32), (jint)loc);
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printf(", expected: 0x%x\n", (jint)pops[eventsCount].loc);
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result = STATUS_FAILED;
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}
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} else {
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printf("Unexpected frame pop catched:");
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printf(" class: \"%s\"\n", cls_sig);
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printf(" method: \"%s%s\"\n", name, sig);
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printf(" location: 0x%x%08x\n", (jint)(loc >> 32), (jint)loc);
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result = STATUS_FAILED;
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}
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eventsCount++;
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}
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_framepop001(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNICALL Agent_OnAttach_framepop001(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNI_OnLoad_framepop001(JavaVM *jvm, char *options, void *reserved) {
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return JNI_VERSION_1_8;
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}
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#endif
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jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
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jvmtiError err;
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jint res;
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if (options != NULL && strcmp(options, "printdump") == 0) {
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printdump = JNI_TRUE;
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}
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res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);
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if (res != JNI_OK || jvmti == NULL) {
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printf("Wrong result of a valid call to GetEnv!\n");
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return JNI_ERR;
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}
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err = jvmti->GetPotentialCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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err = jvmti->AddCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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printf("(AddCapabilities) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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err = jvmti->GetCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetCapabilities) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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if (caps.can_generate_frame_pop_events &&
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caps.can_generate_breakpoint_events) {
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callbacks.Breakpoint = &Breakpoint;
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callbacks.FramePop = &FramePop;
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err = jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks));
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetEventCallbacks) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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} else {
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printf("Warning: FramePop or Breakpoint event is not implemented\n");
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}
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return JNI_OK;
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}
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JNIEXPORT jint JNICALL
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Java_nsk_jvmti_FramePop_framepop001_check(JNIEnv *env, jclass cls) {
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jvmtiError err;
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jclass clz;
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jmethodID mid;
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if (jvmti == NULL) {
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printf("JVMTI client was not properly loaded!\n");
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return STATUS_FAILED;
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}
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if (!caps.can_generate_frame_pop_events ||
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!caps.can_generate_breakpoint_events) {
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return result;
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}
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mid = env->GetStaticMethodID(cls, "chain", "()V");
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if (mid == 0) {
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printf("Cannot find Method ID for method chain\n");
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return STATUS_FAILED;
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}
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err = jvmti->SetBreakpoint(mid, 0);
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if (err != JVMTI_ERROR_NONE) {
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printf("Failed to SetBreakpoint: %s (%d)\n",
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TranslateError(err), err);
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return STATUS_FAILED;
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}
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err = jvmti->SetEventNotificationMode(JVMTI_ENABLE,
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JVMTI_EVENT_FRAME_POP, NULL);
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if (err != JVMTI_ERROR_NONE) {
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printf("Failed to enable JVMTI_EVENT_FRAME_POP event: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti->SetEventNotificationMode(JVMTI_ENABLE,
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JVMTI_EVENT_BREAKPOINT, NULL);
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if (err != JVMTI_ERROR_NONE) {
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printf("Failed to enable BREAKPOINT event: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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clz = env->FindClass("nsk/jvmti/FramePop/framepop001a");
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if (clz == NULL) {
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printf("Cannot find framepop001a class!\n");
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result = STATUS_FAILED;
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return STATUS_FAILED;
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}
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mid = env->GetStaticMethodID(clz, "dummy", "()V");
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if (mid == 0) {
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printf("Cannot find Method ID for method dummy\n");
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return STATUS_FAILED;
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}
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env->CallStaticVoidMethod(clz, mid);
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if (eventsCount != eventsExpected) {
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printf("Wrong number of frame pop events: %" PRIuPTR ", expected: %" PRIuPTR "\n",
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eventsCount, eventsExpected);
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result = STATUS_FAILED;
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}
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return result;
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}
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}
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