--- a/jdk/src/jdk.hprof.agent/share/native/libhprof/hprof_tls.c Thu Aug 20 11:38:24 2015 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,1190 +0,0 @@
-/*
- * Copyright (c) 2003, 2011, 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.
- */
-
-
-#include "hprof.h"
-
-/* Thread Local Storage Table and method entry/exit handling. */
-
-/*
- * The tls table items have a key of it's serial number, but may be
- * searched via a walk of the table looking for a jthread match.
- * This isn't a performance
- * issue because the table index should normally be stored in the
- * Thread Local Storage for the thread. The table is only searched
- * when the jthread is seen before the Thread Local Storage is set
- * (e.g. before VM_INIT or the ThreadStart).
- * The key is only used when we need to lookup a tls table entry by
- * way of it's serial number, which should be unique per thread.
- *
- * Each active thread that we have seen should have a unique TlsIndex
- * which is an index into this table.
- *
- * For cpu=times, each table entry will have a stack to hold the method
- * that have been called, effectively keeping an active stack trace
- * for the thread. As each method exits, the statistics for the trace
- * associated with the current stack contents is updated.
- *
- * For cpu=samples, each thread is checked to see if it's runnable,
- * and not suspended, and has a stack associated with it, and then
- * that stack trace is updated with an additional 'hit'.
- *
- * This file also contains the dump logic for owned monitors, and for
- * threads.
- *
- */
-
-/*
- * Initial number of stack elements to track per thread. This
- * value should be set to a reasonable guess as to the number of
- * methods deep a thread calls. This stack doubles in size for each
- * reallocation and does not shrink.
- */
-
-#define INITIAL_THREAD_STACK_LIMIT 64
-
-typedef struct StackElement {
- FrameIndex frame_index; /* Frame (method/location(-1)) */
- jmethodID method; /* Method ID */
- jlong method_start_time; /* method start time */
- jlong time_in_callees; /* time in callees */
-} StackElement;
-
-typedef struct TlsInfo {
- jint sample_status; /* Thread status for cpu sampling */
- jboolean agent_thread; /* Is thread our own agent thread? */
- jthread globalref; /* Global reference for thread */
- Stack *stack; /* Stack of StackElements entry/exit */
- MonitorIndex monitor_index; /* last contended mon */
- jint tracker_status; /* If we are inside Tracker class */
- FrameIndex *frames_buffer; /* Buffer used to create TraceIndex */
- jvmtiFrameInfo *jframes_buffer; /* Buffer used to create TraceIndex */
- int buffer_depth; /* Frames allowed in buffer */
- TraceIndex last_trace; /* Last trace for this thread */
- ObjectIndex thread_object_index;/* If heap=dump */
- jlong monitor_start_time; /* Start time for monitor */
- jint in_heap_dump; /* If we are an object in the dump */
-} TlsInfo;
-
-typedef struct SearchData {
- JNIEnv *env;
- jthread thread;
- TlsIndex found;
-} SearchData;
-
-typedef struct IterateInfo {
- TlsIndex * ptls_index;
- jthread * pthreads;
- jint count;
-} IterateInfo;
-
-typedef struct ThreadList {
- jthread *threads;
- SerialNumber *serial_nums;
- TlsInfo **infos;
- jint count;
- JNIEnv *env;
-} ThreadList;
-
-typedef struct SampleData {
- ObjectIndex thread_object_index;
- jint sample_status;
-} SampleData;
-
-/* Private internal functions. */
-
-static SerialNumber
-get_key(TlsIndex index)
-{
- SerialNumber *pkey;
- int key_len;
-
- if ( index == 0 ) {
- return 0;
- }
- pkey = NULL;
- key_len = 0;
- table_get_key(gdata->tls_table, index, (void**)&pkey, &key_len);
- HPROF_ASSERT(pkey!=NULL);
- HPROF_ASSERT(key_len==(int)sizeof(SerialNumber));
- return *pkey;
-}
-
-static TlsInfo *
-get_info(TlsIndex index)
-{
- return (TlsInfo*)table_get_info(gdata->tls_table, index);
-}
-
-static void
-delete_globalref(JNIEnv *env, TlsInfo *info)
-{
- jthread ref;
-
- HPROF_ASSERT(env!=NULL);
- HPROF_ASSERT(info!=NULL);
- ref = info->globalref;
- info->globalref = NULL;
- if ( ref != NULL ) {
- deleteWeakGlobalReference(env, ref);
- }
-}
-
-static void
-clean_info(TlsInfo *info)
-{
- /* Free up any allocated space in this TlsInfo structure */
- if ( info->stack != NULL ) {
- stack_term(info->stack);
- info->stack = NULL;
- }
- if ( info->frames_buffer != NULL ) {
- HPROF_FREE(info->frames_buffer);
- info->frames_buffer = NULL;
- }
- if ( info->jframes_buffer != NULL ) {
- HPROF_FREE(info->jframes_buffer);
- info->jframes_buffer = NULL;
- }
-}
-
-static void
-cleanup_item(TableIndex index, void *key_ptr, int key_len,
- void *info_ptr, void *arg)
-{
- TlsInfo * info;
-
- info = (TlsInfo*)info_ptr;
- clean_info(info);
-}
-
-static void
-delete_ref_item(TableIndex index, void *key_ptr, int key_len,
- void *info_ptr, void *arg)
-{
- delete_globalref((JNIEnv*)arg, (TlsInfo*)info_ptr);
-}
-
-static void
-list_item(TableIndex index, void *key_ptr, int key_len,
- void *info_ptr, void *arg)
-{
- TlsInfo *info;
-
- HPROF_ASSERT(info_ptr!=NULL);
-
- info = (TlsInfo*)info_ptr;
- debug_message( "Tls 0x%08x: SN=%u, sample_status=%d, agent=%d, "
- "thread=%p, monitor=0x%08x, "
- "tracker_status=%d\n",
- index,
- *(SerialNumber*)key_ptr,
- info->sample_status,
- info->agent_thread,
- (void*)info->globalref,
- info->monitor_index,
- info->tracker_status);
-}
-
-static void
-search_item(TableIndex index, void *key_ptr, int key_len,
- void *info_ptr, void *arg)
-{
- TlsInfo *info;
- SearchData *data;
- jobject lref;
-
- HPROF_ASSERT(info_ptr!=NULL);
- HPROF_ASSERT(arg!=NULL);
- info = (TlsInfo*)info_ptr;
- data = (SearchData*)arg;
- lref = newLocalReference(data->env, info->globalref);
- if ( lref != NULL ) {
- if ( isSameObject(data->env, data->thread, lref) ) {
- HPROF_ASSERT(data->found==0); /* Did we find more than one? */
- data->found = index;
- }
- deleteLocalReference(data->env, lref);
- }
-}
-
-static TlsIndex
-search(JNIEnv *env, jthread thread)
-{
- SearchData data;
-
- HPROF_ASSERT(env!=NULL);
- HPROF_ASSERT(thread!=NULL);
-
- data.env = env;
- data.thread = thread;
- data.found = 0;
- table_walk_items(gdata->tls_table, &search_item, (void*)&data);
- return data.found;
-}
-
-static void
-garbage_collect_item(TableIndex index, void *key_ptr, int key_len,
- void *info_ptr, void *arg)
-{
- TlsInfo *info;
- JNIEnv *env;
- jobject lref;
-
- HPROF_ASSERT(info_ptr!=NULL);
- HPROF_ASSERT(arg!=NULL);
- info = (TlsInfo*)info_ptr;
- env = (JNIEnv*)arg;
- lref = newLocalReference(env, info->globalref);
- if ( lref == NULL ) {
- delete_globalref(env, info);
- clean_info(info);
- table_free_entry(gdata->tls_table, index);
- } else {
- deleteLocalReference(env, lref);
- }
-}
-
-void
-tls_garbage_collect(JNIEnv *env)
-{
- HPROF_ASSERT(env!=NULL);
- rawMonitorEnter(gdata->data_access_lock); {
- table_walk_items(gdata->tls_table, &garbage_collect_item, (void*)env);
- } rawMonitorExit(gdata->data_access_lock);
-}
-
-static void
-sum_sample_status_item(TableIndex index, void *key_ptr, int key_len, void *info_ptr, void *arg)
-{
- TlsInfo *info;
-
- HPROF_ASSERT(info_ptr!=NULL);
- info = (TlsInfo*)info_ptr;
- if ( !info->agent_thread ) {
- (*(jint*)arg) += info->sample_status;
- }
-}
-
-static void
-setup_trace_buffers(TlsInfo *info, int max_depth)
-{
- int nbytes;
- int max_frames;
-
- if ( info->frames_buffer != NULL && info->buffer_depth >= max_depth ) {
- return;
- }
- if ( info->frames_buffer != NULL ) {
- HPROF_FREE(info->frames_buffer);
- }
- if ( info->jframes_buffer != NULL ) {
- HPROF_FREE(info->jframes_buffer);
- }
- info->buffer_depth = max_depth;
- max_frames = max_depth + 4; /* Allow for BCI & <init> */
- nbytes = (int)sizeof(FrameIndex)*(max_frames+1);
- info->frames_buffer = HPROF_MALLOC(nbytes);
- nbytes = (int)sizeof(jvmtiFrameInfo)*(max_frames+1);
- info->jframes_buffer = HPROF_MALLOC(nbytes);
-}
-
-static TraceIndex
-get_trace(jthread thread, SerialNumber thread_serial_num,
- int depth, jboolean skip_init,
- FrameIndex *frames_buffer, jvmtiFrameInfo *jframes_buffer)
-{
- TraceIndex trace_index;
-
- trace_index = gdata->system_trace_index;
- if ( thread != NULL ) {
- trace_index = trace_get_current(thread,
- thread_serial_num, depth, skip_init,
- frames_buffer, jframes_buffer);
- }
- return trace_index;
-}
-
-/* Find thread with certain object index */
-static void
-sample_setter(TableIndex index, void *key_ptr, int key_len, void *info_ptr, void *arg)
-{
- TlsInfo *info;
-
- HPROF_ASSERT(info_ptr!=NULL);
-
- info = (TlsInfo*)info_ptr;
- if ( info->globalref != NULL && !info->agent_thread ) {
- SampleData *data;
-
- data = (SampleData*)arg;
- if ( data->thread_object_index == info->thread_object_index ) {
- info->sample_status = data->sample_status;
- }
- }
-}
-
-/* Get various lists on known threads */
-static void
-get_thread_list(TableIndex index, void *key_ptr, int key_len, void *info_ptr, void *arg)
-{
- SerialNumber thread_serial_num;
- TlsInfo *info;
- ThreadList *list;
- jthread thread;
-
- HPROF_ASSERT(key_ptr!=NULL);
- HPROF_ASSERT(info_ptr!=NULL);
-
- thread_serial_num = *(SerialNumber*)key_ptr;
- info = (TlsInfo*)info_ptr;
- list = (ThreadList*)arg;
- thread = newLocalReference(list->env, info->globalref);
- if ( thread != NULL && info->sample_status != 0 && !info->agent_thread ) {
- if ( list->infos != NULL ) {
- list->infos[list->count] = info;
- }
- if ( list->serial_nums != NULL ) {
- list->serial_nums[list->count] = thread_serial_num;
- }
- list->threads[list->count] = thread;
- list->count++;
- /* Local reference gets freed by caller */
- } else {
- /* If we don't use the local reference, delete it now */
- if ( thread != NULL ) {
- deleteLocalReference(list->env, thread);
- }
- }
-}
-
-static void
-adjust_stats(jlong total_time, jlong self_time, TraceIndex trace_index,
- StackElement *parent)
-{
- if ( total_time > 0 && parent != NULL ) { /* if a caller exists */
- parent->time_in_callees += total_time;
- }
- trace_increment_cost(trace_index, 1, self_time, total_time);
-}
-
-static void
-push_method(Stack *stack, jlong method_start_time, jmethodID method)
-{
- StackElement new_element;
- FrameIndex frame_index;
-
- HPROF_ASSERT(method!=NULL);
- HPROF_ASSERT(stack!=NULL);
-
- frame_index = frame_find_or_create(method, -1);
- HPROF_ASSERT(frame_index != 0);
- new_element.frame_index = frame_index;
- new_element.method = method;
- new_element.method_start_time= method_start_time;
- new_element.time_in_callees = (jlong)0;
- stack_push(stack, &new_element);
-}
-
-static Stack *
-insure_method_on_stack(jthread thread, TlsInfo *info, jlong current_time,
- FrameIndex frame_index, jmethodID method)
-{
- StackElement element;
- void *p;
- int depth;
- int count;
- int fcount;
- int i;
- Stack *new_stack;
- Stack *stack;
-
- stack = info->stack;
-
- HPROF_ASSERT(method!=NULL);
-
- /* If this method is on the stack, just return */
- depth = stack_depth(stack);
- p = stack_top(stack);
- if ( p != NULL ) {
- element = *(StackElement*)p;
- if ( element.frame_index == frame_index ) {
- return stack;
- }
- }
- for ( i = 0 ; i < depth ; i++ ) {
- p = stack_element(stack, i);
- element = *(StackElement*)p;
- if ( element.frame_index == frame_index ) {
- return stack;
- }
- }
-
- /* It wasn't found, create a new stack */
- getFrameCount(thread, &count);
- if ( count <= 0 ) {
- HPROF_ERROR(JNI_FALSE, "no frames, method can't be on stack");
- }
- setup_trace_buffers(info, count);
- getStackTrace(thread, info->jframes_buffer, count, &fcount);
- HPROF_ASSERT(count==fcount);
-
- /* Create a new stack */
- new_stack = stack_init(INITIAL_THREAD_STACK_LIMIT,
- INITIAL_THREAD_STACK_LIMIT,
- (int)sizeof(StackElement));
- for ( i = count-1; i >= 0 ; i-- ) {
- push_method(new_stack, current_time, info->jframes_buffer[i].method);
- }
- if ( depth > 0 ) {
- for ( i = depth-1 ; i >= 0; i-- ) {
- stack_push(new_stack, stack_element(stack, i));
- }
- }
- stack_term(stack);
- return new_stack;
-}
-
-static void
-pop_method(TlsIndex index, jlong current_time, jmethodID method, FrameIndex frame_index)
-{
- SerialNumber thread_serial_num;
- TlsInfo * info;
- StackElement element;
- void *p;
- int depth;
- int trace_depth;
- jlong total_time;
- jlong self_time;
- int i;
- TraceIndex trace_index;
-
- HPROF_ASSERT(method!=NULL);
- HPROF_ASSERT(frame_index!=0);
-
- thread_serial_num = get_key(index);
- info = get_info(index);
- HPROF_ASSERT(info!=NULL);
- HPROF_ASSERT(info->stack!=NULL);
- depth = stack_depth(info->stack);
- p = stack_pop(info->stack);
- if (p == NULL) {
- HPROF_ERROR(JNI_FALSE, "method return tracked, but stack is empty");
- return;
- }
- element = *(StackElement*)p;
- HPROF_ASSERT(element.frame_index!=0);
-
- /* The depth of frames we should keep track for reporting */
- if (gdata->prof_trace_depth > depth) {
- trace_depth = depth;
- } else {
- trace_depth = gdata->prof_trace_depth;
- }
-
- /* Create a trace entry */
- HPROF_ASSERT(info->frames_buffer!=NULL);
- HPROF_ASSERT(info->jframes_buffer!=NULL);
- setup_trace_buffers(info, trace_depth);
- info->frames_buffer[0] = element.frame_index;
- for (i = 1; i < trace_depth; i++) {
- StackElement e;
-
- e = *(StackElement*)stack_element(info->stack, (depth - i) - 1);
- info->frames_buffer[i] = e.frame_index;
- HPROF_ASSERT(e.frame_index!=0);
- }
- trace_index = trace_find_or_create(thread_serial_num,
- trace_depth, info->frames_buffer, info->jframes_buffer);
-
- /* Calculate time spent */
- total_time = current_time - element.method_start_time;
- if ( total_time < 0 ) {
- total_time = 0;
- self_time = 0;
- } else {
- self_time = total_time - element.time_in_callees;
- }
-
- /* Update stats */
- p = stack_top(info->stack);
- if ( p != NULL ) {
- adjust_stats(total_time, self_time, trace_index, (StackElement*)p);
- } else {
- adjust_stats(total_time, self_time, trace_index, NULL);
- }
-}
-
-static void
-dump_thread_state(TlsIndex index, void *key_ptr, int key_len, void *info_ptr, void *arg)
-{
- SerialNumber thread_serial_num;
- TlsInfo *info;
- jthread thread;
- JNIEnv *env;
-
- HPROF_ASSERT(key_ptr!=NULL);
- HPROF_ASSERT(info_ptr!=NULL);
- env = (JNIEnv*)arg;
- thread_serial_num = *(SerialNumber*)key_ptr;
- info = (TlsInfo*)info_ptr;
- thread = newLocalReference(env, info->globalref);
- if ( thread != NULL ) {
- jint threadState;
- SerialNumber trace_serial_num;
-
- getThreadState(thread, &threadState);
- /* A 0 trace at this time means the thread is in unknown territory.
- * The trace serial number MUST be a valid serial number, so we use
- * the system trace (empty) just so it has a valid trace.
- */
- if ( info->last_trace == 0 ) {
- trace_serial_num = trace_get_serial_number(gdata->system_trace_index);
- } else {
- trace_serial_num = trace_get_serial_number(info->last_trace);
- }
- io_write_monitor_dump_thread_state(thread_serial_num,
- trace_serial_num, threadState);
- deleteLocalReference(env, thread);
- }
-}
-
-static SerialNumber
-get_serial_number(JNIEnv *env, jthread thread)
-{
- TlsIndex index;
-
- if ( thread == NULL ) {
- return gdata->unknown_thread_serial_num;
- }
- HPROF_ASSERT(env!=NULL);
- index = tls_find_or_create(env, thread);
- return get_key(index);
-}
-
-static void
-dump_monitor_state(TlsIndex index, void *key_ptr, int key_len, void *info_ptr, void *arg)
-{
- TlsInfo *info;
- jthread thread;
- JNIEnv *env;
-
- HPROF_ASSERT(info_ptr!=NULL);
- env = (JNIEnv*)arg;
- info = (TlsInfo*)info_ptr;
- thread = newLocalReference(env, info->globalref);
- if ( thread != NULL ) {
- jobject *objects;
- jint ocount;
- int i;
-
- getOwnedMonitorInfo(thread, &objects, &ocount);
- if ( ocount > 0 ) {
- for ( i = 0 ; i < ocount ; i++ ) {
- jvmtiMonitorUsage usage;
- SerialNumber *waiter_nums;
- SerialNumber *notify_waiter_nums;
- int t;
- char * sig;
-
- WITH_LOCAL_REFS(env, 1) {
- jclass clazz;
-
- clazz = getObjectClass(env, objects[i]);
- getClassSignature(clazz, &sig, NULL);
- } END_WITH_LOCAL_REFS;
-
- getObjectMonitorUsage(objects[i], &usage);
- waiter_nums = HPROF_MALLOC(usage.waiter_count*
- (int)sizeof(SerialNumber)+1);
- for ( t = 0 ; t < usage.waiter_count ; t++ ) {
- waiter_nums[t] =
- get_serial_number(env, usage.waiters[t]);
- }
- notify_waiter_nums = HPROF_MALLOC(usage.notify_waiter_count*
- (int)sizeof(SerialNumber)+1);
- for ( t = 0 ; t < usage.notify_waiter_count ; t++ ) {
- notify_waiter_nums[t] =
- get_serial_number(env, usage.notify_waiters[t]);
- }
- io_write_monitor_dump_state(sig,
- get_serial_number(env, usage.owner),
- usage.entry_count,
- waiter_nums, usage.waiter_count,
- notify_waiter_nums, usage.notify_waiter_count);
- jvmtiDeallocate(sig);
- jvmtiDeallocate(usage.waiters);
- jvmtiDeallocate(usage.notify_waiters);
- HPROF_FREE(waiter_nums);
- HPROF_FREE(notify_waiter_nums);
- }
- }
- jvmtiDeallocate(objects);
- deleteLocalReference(env, thread);
- }
-}
-
-static jlong
-monitor_time(void)
-{
- jlong mtime;
-
- mtime = md_get_timemillis(); /* gettimeofday() */
- return mtime;
-}
-
-static jlong
-method_time(void)
-{
- jlong method_time;
-
- method_time = md_get_thread_cpu_timemillis(); /* thread CPU time */
- return method_time;
-}
-
-/* External interfaces */
-
-TlsIndex
-tls_find_or_create(JNIEnv *env, jthread thread)
-{
- SerialNumber thread_serial_num;
- static TlsInfo empty_info;
- TlsInfo info;
- TlsIndex index;
-
- HPROF_ASSERT(env!=NULL);
- HPROF_ASSERT(thread!=NULL);
-
- /*LINTED*/
- index = (TlsIndex)(ptrdiff_t)getThreadLocalStorage(thread);
- if ( index != 0 ) {
- HPROF_ASSERT(isSameObject(env, thread, get_info(index)->globalref));
- return index;
- }
- index = search(env, thread);
- if ( index != 0 ) {
- setThreadLocalStorage(thread, (void*)(ptrdiff_t)index);
- return index;
- }
- thread_serial_num = gdata->thread_serial_number_counter++;
- info = empty_info;
- info.monitor_index = 0;
- info.sample_status = 1;
- info.agent_thread = JNI_FALSE;
- info.stack = stack_init(INITIAL_THREAD_STACK_LIMIT,
- INITIAL_THREAD_STACK_LIMIT,
- (int)sizeof(StackElement));
- setup_trace_buffers(&info, gdata->max_trace_depth);
- info.globalref = newWeakGlobalReference(env, thread);
- index = table_create_entry(gdata->tls_table, &thread_serial_num, (int)sizeof(SerialNumber), (void*)&info);
- setThreadLocalStorage(thread, (void*)(ptrdiff_t)index);
- HPROF_ASSERT(search(env,thread)==index);
- return index;
-}
-
-/* Mark a new or existing entry as being an agent thread */
-void
-tls_agent_thread(JNIEnv *env, jthread thread)
-{
- TlsIndex index;
- TlsInfo *info;
-
- index = tls_find_or_create(env, thread);
- info = get_info(index);
- info->agent_thread = JNI_TRUE;
-}
-
-void
-tls_init(void)
-{
- gdata->tls_table = table_initialize("TLS",
- 16, 16, 16, (int)sizeof(TlsInfo));
-}
-
-void
-tls_list(void)
-{
- debug_message(
- "--------------------- TLS Table ------------------------\n");
- table_walk_items(gdata->tls_table, &list_item, NULL);
- debug_message(
- "----------------------------------------------------------\n");
-}
-
-jint
-tls_sum_sample_status(void)
-{
- jint sample_status_total;
-
- sample_status_total = 0;
- table_walk_items(gdata->tls_table, &sum_sample_status_item, (void*)&sample_status_total);
- return sample_status_total;
-}
-
-void
-tls_set_sample_status(ObjectIndex object_index, jint sample_status)
-{
- SampleData data;
-
- data.thread_object_index = object_index;
- data.sample_status = sample_status;
- table_walk_items(gdata->tls_table, &sample_setter, (void*)&data);
-}
-
-jint
-tls_get_tracker_status(JNIEnv *env, jthread thread, jboolean skip_init,
- jint **ppstatus, TlsIndex* pindex,
- SerialNumber *pthread_serial_num, TraceIndex *ptrace_index)
-{
- TlsInfo *info;
- TlsIndex index;
- SerialNumber thread_serial_num;
- jint status;
-
- index = tls_find_or_create(env, thread);
- info = get_info(index);
- *ppstatus = &(info->tracker_status);
- status = **ppstatus;
- thread_serial_num = get_key(index);
-
- if ( pindex != NULL ) {
- *pindex = index;
- }
- if ( status != 0 ) {
- return status;
- }
- if ( ptrace_index != NULL ) {
- setup_trace_buffers(info, gdata->max_trace_depth);
- *ptrace_index = get_trace(thread, thread_serial_num,
- gdata->max_trace_depth, skip_init,
- info->frames_buffer, info->jframes_buffer);
- }
- if ( pthread_serial_num != NULL ) {
- *pthread_serial_num = thread_serial_num;
- }
- return status;
-}
-
-MonitorIndex
-tls_get_monitor(TlsIndex index)
-{
- TlsInfo *info;
-
- info = get_info(index);
- return info->monitor_index;
-}
-
-void
-tls_set_thread_object_index(TlsIndex index, ObjectIndex thread_object_index)
-{
- TlsInfo *info;
-
- info = get_info(index);
- info->thread_object_index = thread_object_index;
-}
-
-SerialNumber
-tls_get_thread_serial_number(TlsIndex index)
-{
- return get_key(index);
-}
-
-void
-tls_set_monitor(TlsIndex index, MonitorIndex monitor_index)
-{
- TlsInfo *info;
-
- info = get_info(index);
- info->monitor_index = monitor_index;
-}
-
-void
-tls_cleanup(void)
-{
- table_cleanup(gdata->tls_table, &cleanup_item, NULL);
- gdata->tls_table = NULL;
-}
-
-void
-tls_delete_global_references(JNIEnv *env)
-{
- table_walk_items(gdata->tls_table, &delete_ref_item, (void*)env);
-}
-
-void
-tls_thread_ended(JNIEnv *env, TlsIndex index)
-{
- HPROF_ASSERT(env!=NULL);
-
- /* Sample thread stack for last time, do NOT free the entry yet. */
- table_lock_enter(gdata->tls_table); {
- SerialNumber thread_serial_num;
- TlsInfo *info;
- jthread thread;
-
- thread_serial_num = get_key(index);
- info = get_info(index);
- thread = newLocalReference(env, info->globalref);
- if (gdata->heap_dump && thread!=NULL) {
- setup_trace_buffers(info, gdata->max_trace_depth);
- info->last_trace = get_trace(thread, thread_serial_num,
- gdata->max_trace_depth, JNI_FALSE,
- info->frames_buffer, info->jframes_buffer);
- }
- if ( thread != NULL ) {
- deleteLocalReference(env, thread);
- }
- } table_lock_exit(gdata->tls_table);
-
-}
-
-/* Sample ALL threads and update the trace costs */
-void
-tls_sample_all_threads(JNIEnv *env)
-{
- ThreadList list;
- jthread *threads;
- SerialNumber *serial_nums;
-
- table_lock_enter(gdata->tls_table); {
- int max_count;
- int nbytes;
- int i;
-
- /* Get buffers to hold thread list and serial number list */
- max_count = table_element_count(gdata->tls_table);
- nbytes = (int)sizeof(jthread)*max_count;
- threads = (jthread*)HPROF_MALLOC(nbytes);
- nbytes = (int)sizeof(SerialNumber)*max_count;
- serial_nums = (SerialNumber*)HPROF_MALLOC(nbytes);
-
- /* Get list of threads and serial numbers */
- list.threads = threads;
- list.infos = NULL;
- list.serial_nums = serial_nums;
- list.count = 0;
- list.env = env;
- table_walk_items(gdata->tls_table, &get_thread_list, (void*)&list);
-
- /* Increment the cost on the traces for these threads */
- trace_increment_all_sample_costs(list.count, threads, serial_nums,
- gdata->max_trace_depth, JNI_FALSE);
-
- /* Loop over local refs and free them */
- for ( i = 0 ; i < list.count ; i++ ) {
- if ( threads[i] != NULL ) {
- deleteLocalReference(env, threads[i]);
- }
- }
-
- } table_lock_exit(gdata->tls_table);
-
- /* Free up allocated space */
- HPROF_FREE(threads);
- HPROF_FREE(serial_nums);
-
-}
-
-void
-tls_push_method(TlsIndex index, jmethodID method)
-{
- jlong method_start_time;
- TlsInfo *info;
-
- HPROF_ASSERT(method!=NULL);
- info = get_info(index);
- HPROF_ASSERT(info!=NULL);
- method_start_time = method_time();
- HPROF_ASSERT(info->stack!=NULL);
- push_method(info->stack, method_start_time, method);
-}
-
-void
-tls_pop_exception_catch(TlsIndex index, jthread thread, jmethodID method)
-{
- TlsInfo *info;
- StackElement element;
- void *p;
- FrameIndex frame_index;
- jlong current_time;
-
- HPROF_ASSERT(method!=NULL);
- frame_index = frame_find_or_create(method, -1);
- HPROF_ASSERT(frame_index != 0);
-
- info = get_info(index);
-
- HPROF_ASSERT(info!=NULL);
- HPROF_ASSERT(info->stack!=NULL);
- HPROF_ASSERT(frame_index!=0);
- current_time = method_time();
- info->stack = insure_method_on_stack(thread, info, current_time,
- frame_index, method);
- p = stack_top(info->stack);
- if (p == NULL) {
- HPROF_ERROR(JNI_FALSE, "expection pop, nothing on stack");
- return;
- }
- element = *(StackElement*)p;
- HPROF_ASSERT(element.frame_index!=0);
- while ( element.frame_index != frame_index ) {
- pop_method(index, current_time, element.method, frame_index);
- p = stack_top(info->stack);
- if ( p == NULL ) {
- break;
- }
- element = *(StackElement*)p;
- }
- if (p == NULL) {
- HPROF_ERROR(JNI_FALSE, "exception pop stack empty");
- }
-}
-
-void
-tls_pop_method(TlsIndex index, jthread thread, jmethodID method)
-{
- TlsInfo *info;
- StackElement element;
- void *p;
- FrameIndex frame_index;
- jlong current_time;
-
- HPROF_ASSERT(method!=NULL);
- frame_index = frame_find_or_create(method, -1);
- HPROF_ASSERT(frame_index != 0);
-
- info = get_info(index);
- HPROF_ASSERT(info!=NULL);
- HPROF_ASSERT(info->stack!=NULL);
- current_time = method_time();
- HPROF_ASSERT(frame_index!=0);
- info->stack = insure_method_on_stack(thread, info, current_time,
- frame_index, method);
- p = stack_top(info->stack);
- HPROF_ASSERT(p!=NULL);
- element = *(StackElement*)p;
- while ( element.frame_index != frame_index ) {
- pop_method(index, current_time, element.method, frame_index);
- p = stack_top(info->stack);
- if ( p == NULL ) {
- break;
- }
- element = *(StackElement*)p;
- }
- pop_method(index, current_time, method, frame_index);
-}
-
-/* For all TLS entries, update the last_trace on all threads */
-static void
-update_all_last_traces(JNIEnv *env)
-{
- jthread *threads;
- TlsInfo **infos;
- SerialNumber *serial_nums;
- TraceIndex *traces;
-
- if ( gdata->max_trace_depth == 0 ) {
- return;
- }
-
- table_lock_enter(gdata->tls_table); {
-
- ThreadList list;
- int max_count;
- int nbytes;
- int i;
-
- /* Get buffers to hold thread list and serial number list */
- max_count = table_element_count(gdata->tls_table);
- nbytes = (int)sizeof(jthread)*max_count;
- threads = (jthread*)HPROF_MALLOC(nbytes);
- nbytes = (int)sizeof(SerialNumber)*max_count;
- serial_nums = (SerialNumber*)HPROF_MALLOC(nbytes);
- nbytes = (int)sizeof(TlsInfo*)*max_count;
- infos = (TlsInfo**)HPROF_MALLOC(nbytes);
-
- /* Get list of threads, serial numbers, and info pointers */
- list.threads = threads;
- list.serial_nums = serial_nums;
- list.infos = infos;
- list.count = 0;
- list.env = env;
- table_walk_items(gdata->tls_table, &get_thread_list, (void*)&list);
-
- /* Get all stack trace index's for all these threadss */
- nbytes = (int)sizeof(TraceIndex)*max_count;
- traces = (TraceIndex*)HPROF_MALLOC(nbytes);
- trace_get_all_current(list.count, threads, serial_nums,
- gdata->max_trace_depth, JNI_FALSE,
- traces, JNI_TRUE);
-
- /* Loop over traces and update last_trace's */
- for ( i = 0 ; i < list.count ; i++ ) {
- if ( threads[i] != NULL ) {
- deleteLocalReference(env, threads[i]);
- }
- infos[i]->last_trace = traces[i];
- }
-
- } table_lock_exit(gdata->tls_table);
-
- /* Free up all allocated space */
- HPROF_FREE(threads);
- HPROF_FREE(serial_nums);
- HPROF_FREE(infos);
- HPROF_FREE(traces);
-
-}
-
-void
-tls_dump_traces(JNIEnv *env)
-{
- rawMonitorEnter(gdata->data_access_lock); {
- update_all_last_traces(env);
- trace_output_unmarked(env);
- } rawMonitorExit(gdata->data_access_lock);
-}
-
-void
-tls_dump_monitor_state(JNIEnv *env)
-{
- HPROF_ASSERT(env!=NULL);
-
- rawMonitorEnter(gdata->data_access_lock); {
- tls_dump_traces(env);
- io_write_monitor_dump_header();
- table_walk_items(gdata->tls_table, &dump_thread_state, (void*)env);
- table_walk_items(gdata->tls_table, &dump_monitor_state, (void*)env);
- io_write_monitor_dump_footer();
- } rawMonitorExit(gdata->data_access_lock);
-}
-
-void
-tls_monitor_start_timer(TlsIndex index)
-{
- TlsInfo *info;
-
- info = get_info(index);
- HPROF_ASSERT(info!=NULL);
- HPROF_ASSERT(info->globalref!=NULL);
- info->monitor_start_time = monitor_time();
-}
-
-jlong
-tls_monitor_stop_timer(TlsIndex index)
-{
- TlsInfo *info;
- jlong t;
-
- info = get_info(index);
- HPROF_ASSERT(info!=NULL);
- t = monitor_time() - info->monitor_start_time;
- info->monitor_start_time = 0;
- return t;
-}
-
-TraceIndex
-tls_get_trace(TlsIndex index, JNIEnv *env, int depth, jboolean skip_init)
-{
- SerialNumber thread_serial_num;
- TraceIndex trace_index;
- TlsInfo *info;
- jthread thread;
-
- thread_serial_num = get_key(index);
- info = get_info(index);
- HPROF_ASSERT(info!=NULL);
- setup_trace_buffers(info, depth);
- thread = newLocalReference(env, info->globalref);
- if ( thread != NULL ) {
- trace_index = get_trace(thread, thread_serial_num, depth, skip_init,
- info->frames_buffer, info->jframes_buffer);
- deleteLocalReference(env, thread);
- } else {
- trace_index = gdata->system_trace_index;
- }
- return trace_index;
-}
-
-void
-tls_set_in_heap_dump(TlsIndex index, jint in_heap_dump)
-{
- TlsInfo *info;
-
- info = get_info(index);
- info->in_heap_dump = in_heap_dump;
-}
-
-jint
-tls_get_in_heap_dump(TlsIndex index)
-{
- TlsInfo *info;
-
- info = get_info(index);
- return info->in_heap_dump;
-}
-
-static void
-clean_in_heap_dump(TableIndex index, void *key_ptr, int key_len, void *info_ptr, void *arg)
-{
- TlsInfo *info;
-
- HPROF_ASSERT(info_ptr!=NULL);
- info = (TlsInfo*)info_ptr;
- info->in_heap_dump = 0;
-}
-
-void
-tls_clear_in_heap_dump(void)
-{
- table_walk_items(gdata->tls_table, &clean_in_heap_dump, NULL);
-}
-
-TlsIndex
-tls_find(SerialNumber thread_serial_num)
-{
- TlsIndex index;
-
- if ( thread_serial_num == 0 ) {
- return 0;
- }
- index = table_find_entry(gdata->tls_table,
- (void*)&thread_serial_num, (int)sizeof(SerialNumber));
- return index;
-}