| /* |
| * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * - Neither the name of Oracle nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /* |
| * This source code is provided to illustrate the usage of a given feature |
| * or technique and has been deliberately simplified. Additional steps |
| * required for a production-quality application, such as security checks, |
| * input validation and proper error handling, might not be present in |
| * this sample code. |
| */ |
| |
| |
| /* This file contains all class, method and allocation event support functions, |
| * both JVMTI and BCI events. |
| * (See hprof_monitor.c for the monitor event handlers). |
| */ |
| |
| #include "hprof.h" |
| |
| /* Private internal functions. */ |
| |
| /* Return a TraceIndex for the given thread. */ |
| static TraceIndex |
| get_current(TlsIndex tls_index, JNIEnv *env, jboolean skip_init) |
| { |
| TraceIndex trace_index; |
| |
| trace_index = tls_get_trace(tls_index, env, gdata->max_trace_depth, skip_init); |
| return trace_index; |
| } |
| |
| /* Return a ClassIndex for the given jclass, loader supplied or looked up. */ |
| static ClassIndex |
| find_cnum(JNIEnv *env, jclass klass, jobject loader) |
| { |
| LoaderIndex loader_index; |
| ClassIndex cnum; |
| char * signature; |
| |
| HPROF_ASSERT(klass!=NULL); |
| |
| /* Get the loader index */ |
| loader_index = loader_find_or_create(env, loader); |
| |
| /* Get the signature for this class */ |
| getClassSignature(klass, &signature, NULL); |
| |
| /* Find the ClassIndex for this class */ |
| cnum = class_find_or_create(signature, loader_index); |
| |
| /* Free the signature space */ |
| jvmtiDeallocate(signature); |
| |
| /* Make sure we save a global reference to this class in the table */ |
| HPROF_ASSERT(cnum!=0); |
| (void)class_new_classref(env, cnum, klass); |
| return cnum; |
| } |
| |
| /* Get the ClassIndex for the superClass of this jclass. */ |
| static ClassIndex |
| get_super(JNIEnv *env, jclass klass) |
| { |
| ClassIndex super_cnum; |
| |
| super_cnum = 0; |
| WITH_LOCAL_REFS(env, 1) { |
| jclass super_klass; |
| |
| super_klass = getSuperclass(env, klass); |
| if ( super_klass != NULL ) { |
| super_cnum = find_cnum(env, super_klass, |
| getClassLoader(super_klass)); |
| } |
| } END_WITH_LOCAL_REFS; |
| return super_cnum; |
| } |
| |
| /* Record an allocation. Could be jobject, jclass, jarray or primitive type. */ |
| static void |
| any_allocation(JNIEnv *env, SerialNumber thread_serial_num, |
| TraceIndex trace_index, jobject object) |
| { |
| SiteIndex site_index; |
| ClassIndex cnum; |
| jint size; |
| jclass klass; |
| |
| /* NOTE: Normally the getObjectClass() and getClassLoader() |
| * would require a |
| * WITH_LOCAL_REFS(env, 1) { |
| * } END_WITH_LOCAL_REFS; |
| * but for performance reasons we skip it here. |
| */ |
| |
| /* Get and tag the klass */ |
| klass = getObjectClass(env, object); |
| cnum = find_cnum(env, klass, getClassLoader(klass)); |
| site_index = site_find_or_create(cnum, trace_index); |
| tag_class(env, klass, cnum, thread_serial_num, site_index); |
| |
| /* Tag the object */ |
| size = (jint)getObjectSize(object); |
| tag_new_object(object, OBJECT_NORMAL, thread_serial_num, size, site_index); |
| } |
| |
| /* Handle a java.lang.Object.<init> object allocation. */ |
| void |
| event_object_init(JNIEnv *env, jthread thread, jobject object) |
| { |
| /* Called via BCI Tracker class */ |
| |
| /* Be very careful what is called here, watch out for recursion. */ |
| |
| jint *pstatus; |
| TraceIndex trace_index; |
| SerialNumber thread_serial_num; |
| |
| HPROF_ASSERT(env!=NULL); |
| HPROF_ASSERT(thread!=NULL); |
| HPROF_ASSERT(object!=NULL); |
| |
| /* Prevent recursion into any BCI function for this thread (pstatus). */ |
| if ( tls_get_tracker_status(env, thread, JNI_TRUE, |
| &pstatus, NULL, &thread_serial_num, &trace_index) == 0 ) { |
| (*pstatus) = 1; |
| any_allocation(env, thread_serial_num, trace_index, object); |
| (*pstatus) = 0; |
| } |
| } |
| |
| /* Handle any newarray opcode allocation. */ |
| void |
| event_newarray(JNIEnv *env, jthread thread, jobject object) |
| { |
| /* Called via BCI Tracker class */ |
| |
| /* Be very careful what is called here, watch out for recursion. */ |
| |
| jint *pstatus; |
| TraceIndex trace_index; |
| SerialNumber thread_serial_num; |
| |
| HPROF_ASSERT(env!=NULL); |
| HPROF_ASSERT(thread!=NULL); |
| HPROF_ASSERT(object!=NULL); |
| |
| /* Prevent recursion into any BCI function for this thread (pstatus). */ |
| if ( tls_get_tracker_status(env, thread, JNI_FALSE, |
| &pstatus, NULL, &thread_serial_num, &trace_index) == 0 ) { |
| (*pstatus) = 1; |
| any_allocation(env, thread_serial_num, trace_index, object); |
| (*pstatus) = 0; |
| } |
| } |
| |
| /* Handle tracking of a method call. */ |
| void |
| event_call(JNIEnv *env, jthread thread, ClassIndex cnum, MethodIndex mnum) |
| { |
| /* Called via BCI Tracker class */ |
| |
| /* Be very careful what is called here, watch out for recursion. */ |
| |
| TlsIndex tls_index; |
| jint *pstatus; |
| |
| HPROF_ASSERT(env!=NULL); |
| HPROF_ASSERT(thread!=NULL); |
| HPROF_ASSERT(cnum!=0 && cnum!=gdata->tracker_cnum); |
| |
| /* Prevent recursion into any BCI function for this thread (pstatus). */ |
| if ( tls_get_tracker_status(env, thread, JNI_FALSE, |
| &pstatus, &tls_index, NULL, NULL) == 0 ) { |
| jmethodID method; |
| |
| (*pstatus) = 1; |
| method = class_get_methodID(env, cnum, mnum); |
| HPROF_ASSERT(method!=NULL); |
| tls_push_method(tls_index, method); |
| (*pstatus) = 0; |
| } |
| } |
| |
| /* Handle tracking of an exception catch */ |
| void |
| event_exception_catch(JNIEnv *env, jthread thread, jmethodID method, |
| jlocation location, jobject exception) |
| { |
| /* Called via JVMTI_EVENT_EXCEPTION_CATCH callback */ |
| |
| /* Be very careful what is called here, watch out for recursion. */ |
| |
| TlsIndex tls_index; |
| jint *pstatus; |
| |
| HPROF_ASSERT(env!=NULL); |
| HPROF_ASSERT(thread!=NULL); |
| HPROF_ASSERT(method!=NULL); |
| |
| /* Prevent recursion into any BCI function for this thread (pstatus). */ |
| if ( tls_get_tracker_status(env, thread, JNI_FALSE, |
| &pstatus, &tls_index, NULL, NULL) == 0 ) { |
| (*pstatus) = 1; |
| tls_pop_exception_catch(tls_index, thread, method); |
| (*pstatus) = 0; |
| } |
| } |
| |
| /* Handle tracking of a method return pop one (maybe more) methods. */ |
| void |
| event_return(JNIEnv *env, jthread thread, ClassIndex cnum, MethodIndex mnum) |
| { |
| /* Called via BCI Tracker class */ |
| |
| /* Be very careful what is called here, watch out for recursion. */ |
| |
| TlsIndex tls_index; |
| jint *pstatus; |
| |
| HPROF_ASSERT(env!=NULL); |
| HPROF_ASSERT(thread!=NULL); |
| HPROF_ASSERT(cnum!=0 && cnum!=gdata->tracker_cnum); |
| |
| /* Prevent recursion into any BCI function for this thread (pstatus). */ |
| if ( tls_get_tracker_status(env, thread, JNI_FALSE, |
| &pstatus, &tls_index, NULL, NULL) == 0 ) { |
| jmethodID method; |
| |
| (*pstatus) = 1; |
| method = class_get_methodID(env, cnum, mnum); |
| HPROF_ASSERT(method!=NULL); |
| tls_pop_method(tls_index, thread, method); |
| (*pstatus) = 0; |
| } |
| } |
| |
| /* Handle a class prepare (should have been already loaded) */ |
| void |
| event_class_prepare(JNIEnv *env, jthread thread, jclass klass, jobject loader) |
| { |
| /* Called via JVMTI_EVENT_CLASS_PREPARE event */ |
| |
| ClassIndex cnum; |
| |
| HPROF_ASSERT(env!=NULL); |
| HPROF_ASSERT(thread!=NULL); |
| HPROF_ASSERT(klass!=NULL); |
| |
| /* Find the ClassIndex for this class */ |
| cnum = find_cnum(env, klass, loader); |
| class_add_status(cnum, CLASS_PREPARED); |
| |
| } |
| |
| /* Handle a class load (could have been already loaded) */ |
| void |
| event_class_load(JNIEnv *env, jthread thread, jclass klass, jobject loader) |
| { |
| /* Called via JVMTI_EVENT_CLASS_LOAD event or reset_class_load_status() */ |
| |
| ClassIndex cnum; |
| |
| HPROF_ASSERT(env!=NULL); |
| HPROF_ASSERT(klass!=NULL); |
| |
| /* Find the ClassIndex for this class */ |
| cnum = find_cnum(env, klass, loader); |
| |
| /* Always mark it as being in the load list */ |
| class_add_status(cnum, CLASS_IN_LOAD_LIST); |
| |
| /* If we are seeing this as a new loaded class, extra work */ |
| if ( ! ( class_get_status(cnum) & CLASS_LOADED ) ) { |
| TraceIndex trace_index; |
| SiteIndex site_index; |
| ClassIndex super; |
| SerialNumber class_serial_num; |
| SerialNumber trace_serial_num; |
| SerialNumber thread_serial_num; |
| ObjectIndex class_object_index; |
| char *signature; |
| |
| /* Get the TlsIndex and a TraceIndex for this location */ |
| if ( thread == NULL ) { |
| /* This should be very rare, but if this class load was simulated |
| * from hprof_init.c due to a reset of the class load status, |
| * and it originated from a pre-VM_INIT event, the jthread |
| * would be NULL, or it was a jclass created that didn't get |
| * reported to us, like an array class or a primitive class? |
| */ |
| trace_index = gdata->system_trace_index; |
| thread_serial_num = gdata->unknown_thread_serial_num; |
| } else { |
| TlsIndex tls_index; |
| |
| tls_index = tls_find_or_create(env, thread); |
| trace_index = get_current(tls_index, env, JNI_FALSE); |
| thread_serial_num = tls_get_thread_serial_number(tls_index); |
| } |
| |
| /* Get the SiteIndex for this location and a java.lang.Class object */ |
| /* Note that the target cnum, not the cnum for java.lang.Class. */ |
| site_index = site_find_or_create(cnum, trace_index); |
| |
| /* Tag this java.lang.Class object */ |
| tag_class(env, klass, cnum, thread_serial_num, site_index); |
| |
| class_add_status(cnum, CLASS_LOADED); |
| |
| class_serial_num = class_get_serial_number(cnum); |
| class_object_index = class_get_object_index(cnum); |
| trace_serial_num = trace_get_serial_number(trace_index); |
| signature = string_get(class_get_signature(cnum)); |
| |
| rawMonitorEnter(gdata->data_access_lock); { |
| io_write_class_load(class_serial_num, class_object_index, |
| trace_serial_num, signature); |
| } rawMonitorExit(gdata->data_access_lock); |
| |
| super = get_super(env, klass); |
| class_set_super(cnum, super); |
| } |
| |
| } |
| |
| /* Handle a thread start event */ |
| void |
| event_thread_start(JNIEnv *env, jthread thread) |
| { |
| /* Called via JVMTI_EVENT_THREAD_START event */ |
| |
| TlsIndex tls_index; |
| ObjectIndex object_index; |
| TraceIndex trace_index; |
| jlong tag; |
| SerialNumber thread_serial_num; |
| |
| HPROF_ASSERT(env!=NULL); |
| HPROF_ASSERT(thread!=NULL); |
| |
| tls_index = tls_find_or_create(env, thread); |
| thread_serial_num = tls_get_thread_serial_number(tls_index); |
| trace_index = get_current(tls_index, env, JNI_FALSE); |
| |
| tag = getTag(thread); |
| if ( tag == (jlong)0 ) { |
| SiteIndex site_index; |
| jint size; |
| |
| size = (jint)getObjectSize(thread); |
| site_index = site_find_or_create(gdata->thread_cnum, trace_index); |
| /* We create a new object with this thread's serial number */ |
| object_index = object_new(site_index, size, OBJECT_NORMAL, |
| thread_serial_num); |
| } else { |
| object_index = tag_extract(tag); |
| /* Normally the Thread object is created and tagged before we get |
| * here, but the thread_serial_number on this object isn't what |
| * we want. So we update it to the serial number of this thread. |
| */ |
| object_set_thread_serial_number(object_index, thread_serial_num); |
| } |
| tls_set_thread_object_index(tls_index, object_index); |
| |
| WITH_LOCAL_REFS(env, 1) { |
| jvmtiThreadInfo threadInfo; |
| jvmtiThreadGroupInfo threadGroupInfo; |
| jvmtiThreadGroupInfo parentGroupInfo; |
| |
| getThreadInfo(thread, &threadInfo); |
| getThreadGroupInfo(threadInfo.thread_group, &threadGroupInfo); |
| if ( threadGroupInfo.parent != NULL ) { |
| getThreadGroupInfo(threadGroupInfo.parent, &parentGroupInfo); |
| } else { |
| (void)memset(&parentGroupInfo, 0, sizeof(parentGroupInfo)); |
| } |
| |
| rawMonitorEnter(gdata->data_access_lock); { |
| io_write_thread_start(thread_serial_num, |
| object_index, trace_get_serial_number(trace_index), |
| threadInfo.name, threadGroupInfo.name, parentGroupInfo.name); |
| } rawMonitorExit(gdata->data_access_lock); |
| |
| jvmtiDeallocate(threadInfo.name); |
| jvmtiDeallocate(threadGroupInfo.name); |
| jvmtiDeallocate(parentGroupInfo.name); |
| |
| } END_WITH_LOCAL_REFS; |
| } |
| |
| void |
| event_thread_end(JNIEnv *env, jthread thread) |
| { |
| /* Called via JVMTI_EVENT_THREAD_END event */ |
| TlsIndex tls_index; |
| |
| HPROF_ASSERT(env!=NULL); |
| HPROF_ASSERT(thread!=NULL); |
| |
| tls_index = tls_find_or_create(env, thread); |
| rawMonitorEnter(gdata->data_access_lock); { |
| io_write_thread_end(tls_get_thread_serial_number(tls_index)); |
| } rawMonitorExit(gdata->data_access_lock); |
| tls_thread_ended(env, tls_index); |
| setThreadLocalStorage(thread, (void*)NULL); |
| } |
