hotspot/test/serviceability/jvmti/AddModuleReads/libAddModuleReadsTest.c - platform/libcore - Git at Google

 /*
  * Copyright (c) 2016, 2017, 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/Module;";

 static jvmtiEnv *jvmti = NULL;
 static jint result = PASSED;

 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 = 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
 void throw_exc(JNIEnv *env, char *msg) {
     jclass exc_class = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, EXC_CNAME));
     jint rt = JNI_OK;

     if (exc_class == NULL) {
         printf("throw_exc: Error in FindClass(env, %s)\n", EXC_CNAME);
         return;
     }
     rt = JNI_ENV_PTR(env)->ThrowNew(JNI_ENV_ARG(env, exc_class), msg);
     if (rt == JNI_ERR) {
         printf("throw_exc: Error in JNI ThrowNew(env, %s)\n", msg);
     }
 }

 static
 jclass jlM(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
 jboolean can_module_read(JNIEnv *env, jobject module, jobject to_module) {
     static jmethodID mCanRead = NULL;
     jboolean res = JNI_FALSE;

     if (mCanRead == NULL) {
         const char* sign = "(Ljava/lang/Module;)Z";
         mCanRead = get_method(env, jlM(env), "canRead", sign);
     }
     res = JNI_ENV_PTR(env)->CallBooleanMethod(JNI_ENV_ARG(env, module),
                                               mCanRead, to_module);
     return res;
 }

 static
 jint check_add_module_reads(JNIEnv *env,
                             jclass  cls,
                             jobject unnamedModule,
                             jobject baseModule,
                             jobject instrModule) {
     jvmtiError err = JVMTI_ERROR_NONE;
     jboolean can = JNI_FALSE;

     // Add an invalid read edge from NULL module
     printf("Check #N1:\n");
     err = (*jvmti)->AddModuleReads(jvmti, NULL, baseModule);
     if (err != JVMTI_ERROR_NULL_POINTER) {
         printf("#N1: jvmtiError from AddModuleReads: %d\n", err);
         throw_exc(env, "Check #N1: failed to return JVMTI_ERROR_NULL_POINTER for module==NULL");
         return FAILED;
     }

     // Add an invalid read edge to NULL module
     printf("Check #N2:\n");
     err = (*jvmti)->AddModuleReads(jvmti, baseModule, NULL);
     if (err != JVMTI_ERROR_NULL_POINTER) {
         printf("#N2: jvmtiError from AddModuleReads: %d\n", err);
         throw_exc(env, "Check #N2: failed to return JVMTI_ERROR_NULL_POINTER for to_module==NULL");
         return FAILED;
     }

     // Add an invalid read edge from invalid module (cls)
     printf("Check #I1:\n");
     err = (*jvmti)->AddModuleReads(jvmti, cls, baseModule);
     if (err != JVMTI_ERROR_INVALID_MODULE) {
         printf("#I1: jvmtiError from AddModuleReads: %d\n", err);
         throw_exc(env, "Check #I1: failed to return JVMTI_ERROR_INVALID_MODULE for module==cls");
         return FAILED;
     }

     // Add an invalid read edge to invalid module (cls)
     printf("Check #I2:\n");
     err = (*jvmti)->AddModuleReads(jvmti, baseModule, cls);
     if (err != JVMTI_ERROR_INVALID_MODULE) {
         printf("#I2: jvmtiError from AddModuleReads: %d\n", err);
         throw_exc(env, "Check #I2: failed to return JVMTI_ERROR_INVALID_MODULE for to_module==cls");
         return FAILED;
     }

     // Check the edge baseModule->instrModule is absent
     printf("Check #C0:\n");
     can = can_module_read(env, baseModule, instrModule);
     if (can != JNI_FALSE) {
         throw_exc(env, "Check #C0: read edge from base to instr is unexpected");
         return FAILED;
     }

     // Add read edge baseModule->instrModule
     printf("Check #C1:\n");
     err = (*jvmti)->AddModuleReads(jvmti, baseModule, instrModule);
     if (err != JVMTI_ERROR_NONE) {
         printf("#C1: jvmtiError from AddModuleReads: %d\n", err);
         throw_exc(env, "Check #C1: error in add reads from base to instr");
         return FAILED;
     }

     // Check the read edge baseModule->instrModule is present now
     printf("Check #C2:\n");
     can = can_module_read(env, baseModule, instrModule);
     if (can == JNI_FALSE) {
         throw_exc(env, "Check #C2: failed to add reads from base to instr");
         return FAILED;
     }

     // Check the read edge baseModule->unnamedModule is absent
     printf("Check #C3:\n");
     can = can_module_read(env, baseModule, unnamedModule);
     if (can != JNI_FALSE) {
         throw_exc(env, "Check #C3: got unexpected read edge from base to unnamed");
         return FAILED;
     }

     // Add read edge baseModule->unnamedModule
     printf("Check #C4:\n");
     err = (*jvmti)->AddModuleReads(jvmti, baseModule, unnamedModule);
     if (err != JVMTI_ERROR_NONE) {
         printf("#C4: jvmtiError from AddModuleReads: %d\n", err);
         throw_exc(env, "Check #C4: failed to ignore adding read edge from base to unnamed");
         return FAILED;
     }

     // Check the read edge baseModule->unnamedModule is present now
     printf("Check #C5:\n");
     can = can_module_read(env, baseModule, unnamedModule);
     if (can == JNI_FALSE) {
         throw_exc(env, "Check #C5: did not get expected read edge from base to unnamed");
         return FAILED;
     }

     // Check the read edge unnamedModule->instrModule is absent
     printf("Check #C6:\n");
     can = can_module_read(env, unnamedModule, instrModule);
     if (can == JNI_FALSE) {
         throw_exc(env, "Check #C6: did not get expected read edge from unnamed to instr");
         return FAILED;
     }

     // Add read edge unnamedModule->instrModule
     printf("Check #C7:\n");
     err = (*jvmti)->AddModuleReads(jvmti, unnamedModule, instrModule);
     if (err != JVMTI_ERROR_NONE) {
         printf("#C7: jvmtiError from AddModuleReads: %d\n", err);
         throw_exc(env, "Check #C7: failed to ignore adding read edge from unnamed to instr");
         return FAILED;
     }
     return PASSED;
 }

 JNIEXPORT jint JNICALL
 Java_MyPackage_AddModuleReadsTest_check(JNIEnv *env,
                                         jclass cls,
                                         jobject unnamedModule,
                                         jobject baseModule,
                                         jobject instrModule) {
     if (jvmti == NULL) {
         throw_exc(env, "JVMTI client was not properly loaded!\n");
         return FAILED;
     }

     printf("\n*** Checks for JVMTI AddModuleReads ***\n\n");
     result = check_add_module_reads(env, cls, unnamedModule, baseModule, instrModule);
     if (result != PASSED) {
         return result;
     }
     return result;
 }

 #ifdef __cplusplus
 }
 #endif
	/*
	* Copyright (c) 2016, 2017, 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/Module;";

	static jvmtiEnv *jvmti = NULL;
	static jint result = PASSED;

	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 = 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
	void throw_exc(JNIEnv env, char msg) {
	jclass exc_class = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, EXC_CNAME));
	jint rt = JNI_OK;

	if (exc_class == NULL) {
	printf("throw_exc: Error in FindClass(env, %s)\n", EXC_CNAME);
	return;
	}
	rt = JNI_ENV_PTR(env)->ThrowNew(JNI_ENV_ARG(env, exc_class), msg);
	if (rt == JNI_ERR) {
	printf("throw_exc: Error in JNI ThrowNew(env, %s)\n", msg);
	}
	}

	static
	jclass jlM(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
	jboolean can_module_read(JNIEnv *env, jobject module, jobject to_module) {
	static jmethodID mCanRead = NULL;
	jboolean res = JNI_FALSE;

	if (mCanRead == NULL) {
	const char* sign = "(Ljava/lang/Module;)Z";
	mCanRead = get_method(env, jlM(env), "canRead", sign);
	}
	res = JNI_ENV_PTR(env)->CallBooleanMethod(JNI_ENV_ARG(env, module),
	mCanRead, to_module);
	return res;
	}

	static
	jint check_add_module_reads(JNIEnv *env,
	jclass cls,
	jobject unnamedModule,
	jobject baseModule,
	jobject instrModule) {
	jvmtiError err = JVMTI_ERROR_NONE;
	jboolean can = JNI_FALSE;

	// Add an invalid read edge from NULL module
	printf("Check #N1:\n");
	err = (*jvmti)->AddModuleReads(jvmti, NULL, baseModule);
	if (err != JVMTI_ERROR_NULL_POINTER) {
	printf("#N1: jvmtiError from AddModuleReads: %d\n", err);
	throw_exc(env, "Check #N1: failed to return JVMTI_ERROR_NULL_POINTER for module==NULL");
	return FAILED;
	}

	// Add an invalid read edge to NULL module
	printf("Check #N2:\n");
	err = (*jvmti)->AddModuleReads(jvmti, baseModule, NULL);
	if (err != JVMTI_ERROR_NULL_POINTER) {
	printf("#N2: jvmtiError from AddModuleReads: %d\n", err);
	throw_exc(env, "Check #N2: failed to return JVMTI_ERROR_NULL_POINTER for to_module==NULL");
	return FAILED;
	}

	// Add an invalid read edge from invalid module (cls)
	printf("Check #I1:\n");
	err = (*jvmti)->AddModuleReads(jvmti, cls, baseModule);
	if (err != JVMTI_ERROR_INVALID_MODULE) {
	printf("#I1: jvmtiError from AddModuleReads: %d\n", err);
	throw_exc(env, "Check #I1: failed to return JVMTI_ERROR_INVALID_MODULE for module==cls");
	return FAILED;
	}

	// Add an invalid read edge to invalid module (cls)
	printf("Check #I2:\n");
	err = (*jvmti)->AddModuleReads(jvmti, baseModule, cls);
	if (err != JVMTI_ERROR_INVALID_MODULE) {
	printf("#I2: jvmtiError from AddModuleReads: %d\n", err);
	throw_exc(env, "Check #I2: failed to return JVMTI_ERROR_INVALID_MODULE for to_module==cls");
	return FAILED;
	}

	// Check the edge baseModule->instrModule is absent
	printf("Check #C0:\n");
	can = can_module_read(env, baseModule, instrModule);
	if (can != JNI_FALSE) {
	throw_exc(env, "Check #C0: read edge from base to instr is unexpected");
	return FAILED;
	}

	// Add read edge baseModule->instrModule
	printf("Check #C1:\n");
	err = (*jvmti)->AddModuleReads(jvmti, baseModule, instrModule);
	if (err != JVMTI_ERROR_NONE) {
	printf("#C1: jvmtiError from AddModuleReads: %d\n", err);
	throw_exc(env, "Check #C1: error in add reads from base to instr");
	return FAILED;
	}

	// Check the read edge baseModule->instrModule is present now
	printf("Check #C2:\n");
	can = can_module_read(env, baseModule, instrModule);
	if (can == JNI_FALSE) {
	throw_exc(env, "Check #C2: failed to add reads from base to instr");
	return FAILED;
	}

	// Check the read edge baseModule->unnamedModule is absent
	printf("Check #C3:\n");
	can = can_module_read(env, baseModule, unnamedModule);
	if (can != JNI_FALSE) {
	throw_exc(env, "Check #C3: got unexpected read edge from base to unnamed");
	return FAILED;
	}

	// Add read edge baseModule->unnamedModule
	printf("Check #C4:\n");
	err = (*jvmti)->AddModuleReads(jvmti, baseModule, unnamedModule);
	if (err != JVMTI_ERROR_NONE) {
	printf("#C4: jvmtiError from AddModuleReads: %d\n", err);
	throw_exc(env, "Check #C4: failed to ignore adding read edge from base to unnamed");
	return FAILED;
	}

	// Check the read edge baseModule->unnamedModule is present now
	printf("Check #C5:\n");
	can = can_module_read(env, baseModule, unnamedModule);
	if (can == JNI_FALSE) {
	throw_exc(env, "Check #C5: did not get expected read edge from base to unnamed");
	return FAILED;
	}

	// Check the read edge unnamedModule->instrModule is absent
	printf("Check #C6:\n");
	can = can_module_read(env, unnamedModule, instrModule);
	if (can == JNI_FALSE) {
	throw_exc(env, "Check #C6: did not get expected read edge from unnamed to instr");
	return FAILED;
	}

	// Add read edge unnamedModule->instrModule
	printf("Check #C7:\n");
	err = (*jvmti)->AddModuleReads(jvmti, unnamedModule, instrModule);
	if (err != JVMTI_ERROR_NONE) {
	printf("#C7: jvmtiError from AddModuleReads: %d\n", err);
	throw_exc(env, "Check #C7: failed to ignore adding read edge from unnamed to instr");
	return FAILED;
	}
	return PASSED;
	}

	JNIEXPORT jint JNICALL
	Java_MyPackage_AddModuleReadsTest_check(JNIEnv *env,
	jclass cls,
	jobject unnamedModule,
	jobject baseModule,
	jobject instrModule) {
	if (jvmti == NULL) {
	throw_exc(env, "JVMTI client was not properly loaded!\n");
	return FAILED;
	}

	printf("\n* Checks for JVMTI AddModuleReads *\n\n");
	result = check_add_module_reads(env, cls, unnamedModule, baseModule, instrModule);
	if (result != PASSED) {
	return result;
	}
	return result;
	}

	#ifdef __cplusplus
	}
	#endif