147 lines
4.3 KiB
C++
147 lines
4.3 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 "jvmti.h"
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#include "agent_common.h"
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#include "JVMTITools.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef JNI_ENV_ARG
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#ifdef __cplusplus
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#define JNI_ENV_ARG(x, y) y
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#define JNI_ENV_PTR(x) x
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#else
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#define JNI_ENV_ARG(x,y) x, y
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#define JNI_ENV_PTR(x) (*x)
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#endif
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#endif
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#define PASSED 0
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#define STATUS_FAILED 2
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static jvmtiEnv *jvmti = NULL;
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static jvmtiCapabilities caps;
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static jint result = PASSED;
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_framecnt001(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_framecnt001(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_framecnt001(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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res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),
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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_suspend) {
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printf("Warning: suspend/resume is not implemented\n");
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}
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return JNI_OK;
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}
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JNIEXPORT void JNICALL Java_nsk_jvmti_GetFrameCount_framecnt001_checkFrames(JNIEnv *env, jclass cls,
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jthread thr, jint thr_num, jint fnum) {
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jvmtiError err;
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jint frameCount;
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if (!caps.can_suspend) {
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return;
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}
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if (thr_num != 0) {
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err = jvmti->SuspendThread(thr);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SuspendThread#%d) unexpected error: %s (%d)\n",
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thr_num, TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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err = jvmti->GetFrameCount(thr, &frameCount);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetFrameCount#%d) unexpected error: %s (%d)\n",
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thr_num, TranslateError(err), err);
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result = STATUS_FAILED;
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} else if (frameCount != fnum) {
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printf("Thread #%d: number of frames expected: %d, got: %d\n",
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thr_num, fnum, frameCount);
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result = STATUS_FAILED;
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}
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if (thr_num != 0) {
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err = jvmti->ResumeThread(thr);
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if (err != JVMTI_ERROR_NONE) {
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printf("(ResumeThread#%d) unexpected error: %s (%d)\n",
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thr_num, TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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}
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JNIEXPORT jint JNICALL Java_nsk_jvmti_GetFrameCount_framecnt001_getRes(JNIEnv *env, jclass cls) {
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return result;
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}
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#ifdef __cplusplus
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}
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#endif
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