--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/serviceability/jvmti/GetNamedModule/libGetNamedModuleTest.c Sat Jul 09 19:20:38 2016 -0700
@@ -0,0 +1,405 @@
+/*
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include "jvmti.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef JNI_ENV_ARG
+
+#ifdef __cplusplus
+#define JNI_ENV_ARG(x, y) y
+#define JNI_ENV_PTR(x) x
+#else
+#define JNI_ENV_ARG(x,y) x, y
+#define JNI_ENV_PTR(x) (*x)
+#endif
+
+#endif
+
+#define TranslateError(err) "JVMTI error"
+
+#define PASSED 0
+#define FAILED 2
+
+static const char *EXC_CNAME = "java/lang/Exception";
+static const char* MOD_CNAME = "Ljava/lang/reflect/Module;";
+
+static jvmtiEnv *jvmti = NULL;
+static jint result = PASSED;
+static jboolean printdump = JNI_FALSE;
+
+static jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved);
+
+JNIEXPORT
+jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+
+JNIEXPORT
+jint JNICALL Agent_OnAttach(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+
+JNIEXPORT
+jint JNICALL JNI_OnLoad(JavaVM *jvm, void *reserved) {
+ return JNI_VERSION_1_8;
+}
+
+static
+jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
+ jint res;
+
+ if (options != NULL && strcmp(options, "printdump") == 0) {
+ printdump = JNI_TRUE;
+ }
+
+ res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),
+ JVMTI_VERSION_9);
+ if (res != JNI_OK || jvmti == NULL) {
+ printf(" Error: wrong result of a valid call to GetEnv!\n");
+ return JNI_ERR;
+ }
+
+ return JNI_OK;
+}
+
+static
+jint throw_exc(JNIEnv *env, char *msg) {
+ jclass exc_class = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, EXC_CNAME));
+
+ if (exc_class == NULL) {
+ printf("throw_exc: Error in FindClass(env, %s)\n", EXC_CNAME);
+ return -1;
+ }
+ return JNI_ENV_PTR(env)->ThrowNew(JNI_ENV_ARG(env, exc_class), msg);
+}
+
+static
+jobject get_class_loader(jclass cls) {
+ jvmtiError err = JVMTI_ERROR_NONE;
+ jobject loader = NULL;
+
+ if (printdump == JNI_TRUE) {
+ printf(">>> getting class loader ...\n");
+ }
+ err = (*jvmti)->GetClassLoader(jvmti, cls, &loader);
+ if (err != JVMTI_ERROR_NONE) {
+ printf(" Error in GetClassLoader: %s (%d)\n", TranslateError(err), err);
+ }
+ return loader;
+}
+
+static
+jclass jlrM(JNIEnv *env) {
+ jclass cls = NULL;
+
+ cls = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, MOD_CNAME));
+ if (cls == NULL) {
+ printf(" Error in JNI FindClass: %s\n", MOD_CNAME);
+ }
+ return cls;
+}
+
+jmethodID
+get_method(JNIEnv *env, jclass clazz, const char * name, const char *sig) {
+ jmethodID method = NULL;
+
+ method = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, clazz), name, sig);
+ if (method == NULL) {
+ printf(" Error in JNI GetMethodID %s with signature %s", name, sig);
+ }
+ return method;
+}
+
+static
+jobject get_module_loader(JNIEnv *env, jobject module) {
+ static jmethodID cl_method = NULL;
+ jobject loader = NULL;
+
+ if (cl_method == NULL) {
+ cl_method = get_method(env, jlrM(env), "getClassLoader", "()Ljava/lang/ClassLoader;");
+ }
+ loader = (jobject)JNI_ENV_PTR(env)->CallObjectMethod(JNI_ENV_ARG(env, module), cl_method);
+ return loader;
+}
+
+static
+const char* get_module_name(JNIEnv *env, jobject module) {
+ static jmethodID method = NULL;
+ jobject loader = NULL;
+ jstring jstr = NULL;
+ const char *name = NULL;
+ const char *nstr = NULL;
+
+ if (method == NULL) {
+ method = get_method(env, jlrM(env), "getName", "()Ljava/lang/String;");
+ }
+ jstr = (jstring)JNI_ENV_PTR(env)->CallObjectMethod(JNI_ENV_ARG(env, module), method);
+ if (jstr != NULL) {
+ name = JNI_ENV_PTR(env)->GetStringUTFChars(JNI_ENV_ARG(env, jstr), NULL);
+ }
+ loader = get_module_loader(env, module);
+ nstr = (name == NULL) ? "<UNNAMED>" : name;
+ printf(" loader: %p, module: %p, name: %s\n", loader, module, nstr);
+ return name;
+}
+
+static
+jvmtiError get_module(JNIEnv *env,
+ jobject loader,
+ const char* pkg_name,
+ jobject* module_ptr,
+ const char** mod_name_ptr) {
+ jvmtiError err = JVMTI_ERROR_NONE;
+ const char* name = (pkg_name == NULL) ? "<NULL>" : pkg_name;
+
+ printf(">>> getting module by loader %p and package \"%s\"\n", loader, name);
+ *mod_name_ptr = NULL;
+ err = (*jvmti)->GetNamedModule(jvmti, loader, pkg_name, module_ptr);
+ if (err != JVMTI_ERROR_NONE) {
+ printf(" Error in GetNamedModule for package \"%s\": %s (%d)\n",
+ pkg_name, TranslateError(err), err);
+ return err;
+ }
+ printf(" returned module: %p\n", *module_ptr);
+ if (*module_ptr == NULL) { // named module was not found
+ return err;
+ }
+ *mod_name_ptr = get_module_name(env, *module_ptr);
+ return err;
+}
+
+static
+jint get_all_modules(JNIEnv *env) {
+ jvmtiError err;
+ jint cnt = -1;
+ jint idx = 0;
+ jobject* modules;
+
+ printf(">>> Inspecting modules with GetAllModules\n");
+ err = (*jvmti)->GetAllModules(jvmti, &cnt, &modules);
+ if (err != JVMTI_ERROR_NONE) {
+ printf("Error in GetAllModules: %d\n", err);
+ return -1;
+ }
+ for (idx = 0; idx < cnt; ++idx) {
+ get_module_name(env, modules[idx]);
+ }
+ return cnt;
+}
+
+static
+jint check_bad_loader(JNIEnv *env, jobject loader) {
+ jvmtiError err = JVMTI_ERROR_NONE;
+ jobject module = NULL;
+ const char* mod_name = NULL;
+
+ err = get_module(env, loader, "", &module, &mod_name);
+ if (err != JVMTI_ERROR_ILLEGAL_ARGUMENT) {
+ return FAILED;
+ }
+ printf(" got expected JVMTI_ERROR_ILLEGAL_ARGUMENT for bad loader\n");
+ return PASSED;
+}
+
+static
+jint check_system_loader(JNIEnv *env, jobject loader) {
+ jvmtiError err = JVMTI_ERROR_NONE;
+ jobject module = NULL;
+ const char* exp_name = NULL;
+ const char* mod_name = NULL;
+
+ // NULL pointer for package name
+ err = get_module(env, loader, NULL, &module, &mod_name);
+ if (err != JVMTI_ERROR_NULL_POINTER) {
+ throw_exc(env, "check #SN1: failed to return JVMTI_ERROR_NULL_POINTER for NULL package");
+ return FAILED;
+ }
+
+ // NULL pointer for module_ptr
+ err = (*jvmti)->GetNamedModule(jvmti, loader, "", NULL);
+ if (err != JVMTI_ERROR_NULL_POINTER) {
+ throw_exc(env, "check #SN2: failed to return JVMTI_ERROR_NULL_POINTER for NULL module_ptr");
+ return FAILED;
+ }
+
+ // Unnamed/default package ""
+ err = get_module(env, loader, "", &module, &mod_name);
+ if (err != JVMTI_ERROR_NONE) {
+ throw_exc(env, "check #S1: failed to return JVMTI_ERROR_NONE for default package");
+ return FAILED;
+ }
+ if (module != NULL || mod_name != NULL) {
+ throw_exc(env, "check #S2: failed to return NULL-module for default package");
+ return FAILED;
+ }
+
+ // Test package: MyPackage
+ err = get_module(env, loader, "MyPackage", &module, &mod_name);
+ if (err != JVMTI_ERROR_NONE) {
+ throw_exc(env, "check #S3: failed to return JVMTI_ERROR_NONE for MyPackage");
+ return FAILED;
+ }
+ if (module != NULL || mod_name != NULL) {
+ throw_exc(env, "check #S4: failed to return NULL-module for MyPackage");
+ return FAILED;
+ }
+
+ // Package: com/sun/jdi
+ exp_name = "jdk.jdi";
+ err = get_module(env, loader, "com/sun/jdi", &module, &mod_name);
+ if (err != JVMTI_ERROR_NONE) {
+ throw_exc(env, "check #S5: failed to return JVMTI_ERROR_NONE for test package");
+ return FAILED;
+ }
+ if (module == NULL || mod_name == NULL) {
+ throw_exc(env, "check #S6: failed to return named module for com/sun/jdi package");
+ return FAILED;
+ }
+ if (strcmp(mod_name, exp_name) != 0) {
+ printf("check #S7: failed to return right module, expected: %s, returned: %s\n",
+ exp_name, mod_name);
+ throw_exc(env, "check #S7: failed to return jdk.jdi module for com/sun/jdi package");
+ return FAILED;
+ }
+
+ // Non-existing package: "bad/package/name"
+ err = get_module(env, loader, "bad/package/name", &module, &mod_name);
+ if (err != JVMTI_ERROR_NONE) {
+ throw_exc(env, "check #S8: failed to return JVMTI_ERROR_NONE for bad package");
+ return FAILED;
+ }
+ if (module != NULL || mod_name != NULL) {
+ throw_exc(env, "check #S9: failed to return NULL-module for bad package");
+ return FAILED;
+ }
+ return PASSED;
+}
+
+static
+jint check_bootstrap_loader(JNIEnv *env, jobject loader) {
+ jvmtiError err = JVMTI_ERROR_NONE;
+ jobject module = NULL;
+ const char* exp_name = NULL;
+ const char* mod_name = NULL;
+
+ // NULL pointer for package name
+ err = get_module(env, loader, NULL, &module, &mod_name);
+ if (err != JVMTI_ERROR_NULL_POINTER) {
+ throw_exc(env, "check #BN1: failed to return JVMTI_ERROR_NULL_POINTER for NULL package");
+ return FAILED;
+ }
+
+ // NULL pointer for module_ptr
+ err = (*jvmti)->GetNamedModule(jvmti, loader, "", NULL);
+ if (err != JVMTI_ERROR_NULL_POINTER) {
+ throw_exc(env, "check #BN2: failed to return JVMTI_ERROR_NULL_POINTER for NULL module_ptr");
+ return FAILED;
+ }
+
+ // Unnamed/default package ""
+ err = get_module(env, loader, "", &module, &mod_name);
+ if (err != JVMTI_ERROR_NONE) {
+ throw_exc(env, "check #B1: failed to return JVMTI_ERROR_NONE for default package");
+ return FAILED;
+ }
+ if (module != NULL || mod_name != NULL) {
+ throw_exc(env, "check #B2: failed to return NULL-module for default package");
+ return FAILED;
+ }
+
+ // Normal package from java.base module: "java/lang"
+ exp_name = "java.base";
+ err = get_module(env, loader, "java/lang", &module, &mod_name);
+ if (err != JVMTI_ERROR_NONE) {
+ throw_exc(env, "check #B3: failed to return JVMTI_ERROR_NONE for java/lang package");
+ return FAILED;
+ }
+ if (module == NULL || mod_name == NULL) {
+ throw_exc(env, "check #B4: failed to return named module for java/lang package");
+ return FAILED;
+ }
+ if (strcmp(exp_name, mod_name) != 0) {
+ printf("check #B5: failed to return right module, expected: %s, returned: %s\n",
+ exp_name, mod_name);
+ throw_exc(env, "check #B5: failed to return expected module for java/lang package");
+ return FAILED;
+ }
+
+ // Non-existing package: "bad/package/name"
+ err = get_module(env, loader, "bad/package/name", &module, &mod_name);
+ if (err != JVMTI_ERROR_NONE) {
+ throw_exc(env, "check #B6: failed to return JVMTI_ERROR_NONE for bad package");
+ return FAILED;
+ }
+ if (module != NULL || mod_name != NULL) {
+ throw_exc(env, "check #B7: failed to return NULL-module for bad package");
+ return FAILED;
+ }
+ return PASSED;
+}
+
+JNIEXPORT jint JNICALL
+Java_MyPackage_GetNamedModuleTest_check(JNIEnv *env, jclass cls) {
+ jobject loader = NULL;
+
+ if (jvmti == NULL) {
+ throw_exc(env, "JVMTI client was not properly loaded!\n");
+ return FAILED;
+ }
+
+ get_all_modules(env);
+
+ printf("\n*** Check for bad ClassLoader ***\n\n");
+ result = check_bad_loader(env, (jobject)cls);
+ if (result != PASSED) {
+ throw_exc(env, "check #L1: failed to return JVMTI_ERROR_ILLEGAL_ARGUMENT for bad loader");
+ return result;
+ }
+
+ loader = get_class_loader(cls);
+ if (loader == NULL) {
+ throw_exc(env, "check #L2: failed to return non-NULL loader for valid test class");
+ return FAILED;
+ }
+
+ printf("\n*** Checks for System ClassLoader ***\n\n");
+ result = check_system_loader(env, loader);
+ if (result != PASSED) {
+ return result;
+ }
+
+ printf("\n*** Checks for Bootstrap ClassLoader ***\n\n");
+ result = check_bootstrap_loader(env, NULL);
+
+ return result;
+}
+
+#ifdef __cplusplus
+}
+#endif