1 /*
2 * Copyright (c) 2003, 2023, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 #include <stdio.h>
25 #include <string.h>
26 #include "jvmti.h"
27 #include "jvmti_common.h"
28 #include "../get_stack_trace.h"
29
30 extern "C" {
31
32 static jvmtiEnv *jvmti = NULL;
33 static frame_info expected_platform_frames[] = {
34 {"Ljava/lang/Object;", "wait", "()V"},
35 {"Lgetstacktr03;", "dummy", "()V"},
36 {"Lgetstacktr03;", "chain", "()V"},
37 {"Lgetstacktr03$Task;", "run", "()V"},
38 {"Ljava/lang/Thread;", "runWith", "(Ljava/lang/Object;Ljava/lang/Runnable;)V"},
39 {"Ljava/lang/Thread;", "run", "()V"},
40 };
41
42 static frame_info expected_virtual_frames[] = {
43 {"Ljava/lang/Object;", "wait", "()V"},
44 {"Lgetstacktr03;", "dummy", "()V"},
45 {"Lgetstacktr03;", "chain", "()V"},
46 {"Lgetstacktr03$Task;", "run", "()V"},
47 {"Ljava/lang/VirtualThread;", "runWith", "(Ljava/lang/Object;Ljava/lang/Runnable;)V"},
48 {"Ljava/lang/VirtualThread;", "run", "(Ljava/lang/Runnable;)V"},
49 {"Ljava/lang/VirtualThread$VThreadContinuation;", "lambda$new$0", "(Ljava/lang/VirtualThread;Ljava/lang/Runnable;)V"},
50 {"Ljava/lang/VirtualThread$VThreadContinuation$$Lambda.0x0000000800098810;", "run", "()V"},
51 {"Ljdk/internal/vm/Continuation;", "enter0", "()V"},
52 {"Ljdk/internal/vm/Continuation;", "enter", "(Ljdk/internal/vm/Continuation;Z)V"}
53 };
54
55 JNIEXPORT jint JNICALL
56 Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
57 jvmtiError err;
58 jint res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);
59 if (res != JNI_OK || jvmti == NULL) {
60 LOG("Wrong result of a valid call to GetEnv!\n");
61 return JNI_ERR;
62 }
63
64 jvmtiCapabilities caps;
65 memset(&caps, 0, sizeof(caps));
66 caps.can_suspend = 1;
67
68 err = jvmti->AddCapabilities(&caps);
69 if (err != JVMTI_ERROR_NONE) {
70 LOG("(AddCapabilities) unexpected error: %s (%d)\n", TranslateError(err), err);
71 return JNI_ERR;
72 }
73
74 return JNI_OK;
75 }
76
77 JNIEXPORT void JNICALL
78 Java_getstacktr03_chain(JNIEnv *env, jclass cls) {
79 jmethodID mid = env->GetStaticMethodID(cls, "dummy", "()V");
80 env->CallStaticVoidMethod(cls, mid);
81 }
82
83 JNIEXPORT int JNICALL
84 Java_getstacktr03_check(JNIEnv *jni, jclass cls, jthread thread) {
85 suspend_thread(jvmti, jni, thread);
86 frame_info *expected_frames = jni->IsVirtualThread(thread)
87 ? expected_virtual_frames
88 : expected_platform_frames;
89 int expected_number_of_stack_frames = jni->IsVirtualThread(thread)
90 ? ((int) (sizeof(expected_virtual_frames) / sizeof(frame_info)))
91 : ((int) (sizeof(expected_platform_frames) / sizeof(frame_info)));
92
93 if (!compare_stack_trace(jvmti, jni, thread, expected_frames, expected_number_of_stack_frames)) {
94 jni->ThrowNew(jni->FindClass("java/lang/RuntimeException"), "Stacktrace differs from expected.");
95 }
96 resume_thread(jvmti, jni, thread);
97 return 0;
98 }
99
100 }