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
25 #include "precompiled.hpp"
26 #include "classfile/classLoaderData.hpp"
27 #include "memory/metaspaceTracer.hpp"
28 #include "runtime/frame.hpp"
29 #include "runtime/os.hpp"
30 #include "runtime/thread.inline.hpp"
31 #include "trace/tracing.hpp"
32 #include "trace/traceBackend.hpp"
33 #include "utilities/decoder.hpp"
34 #include "utilities/ostream.hpp"
35
36 void MetaspaceTracer::report_gc_threshold(size_t old_val,
37 size_t new_val,
38 MetaspaceGCThresholdUpdater::Type updater) const {
39 EventMetaspaceGCThreshold event;
40 if (event.should_commit()) {
41 event.set_oldValue(old_val);
42 event.set_newValue(new_val);
43 event.set_updater((u1)updater);
44 event.commit();
45 }
46 }
47
48 static bool get_method_name(address pc, char *buf, size_t buflen) {
49 if (os::address_is_in_vm(pc) && Decoder::can_decode_C_frame_in_vm()) {
50 return os::dll_address_to_function_name(pc, buf, (int) buflen, 0);
51 }
52 return false;
53 }
54
55 static bool is_valid_frame_in_vm(const frame* f) {
56 return f->pc() && os::address_is_in_vm(f->pc()) && !f->is_java_frame();
57 }
58
59 static void write_vm_stack_trace(outputStream *stream) {
60 const size_t max_num_frames = 64;
61 size_t num_frames = 0;
62
63 const size_t buflen = 256;
64 char *buf = NEW_RESOURCE_ARRAY(char, buflen);
65
66 Thread* current_thread = Thread::current();
67 frame fr = os::current_frame();
68 while (is_valid_frame_in_vm(&fr) && num_frames < max_num_frames) {
69 if (get_method_name(fr.pc(), buf, buflen)) {
70 stream->print_cr("%s", buf);
71 } else {
72 stream->print_cr(PTR_FORMAT, fr.pc());
73 }
74
75 // Check if it safe to get the caller's stack frame.
76 if (fr.safe_for_sender(current_thread)) {
77 fr = os::get_sender_for_C_frame(&fr);
78 } else {
79 // Not safe to traverse the stack any further.
80 return;
81 }
82
83 num_frames++;
84 }
85 }
86
87 void MetaspaceTracer::report_metaspace_allocation_failure(ClassLoaderData *cld,
88 size_t word_size,
89 MetaspaceObj::Type objtype,
90 Metaspace::MetadataType mdtype) const {
91 EventMetaspaceAllocationFailure event;
92 if (event.should_commit()) {
93 if (cld->is_anonymous()) {
94 event.set_classLoader(NULL);
95 event.set_anonymousClassLoader(true);
96 } else {
97 if (cld->is_the_null_class_loader_data()) {
98 event.set_classLoader((Klass*) NULL);
99 } else {
100 event.set_classLoader(cld->class_loader()->klass());
101 }
102 event.set_anonymousClassLoader(false);
103 }
104
105 #ifdef _WINDOWS
106 // Can not walk the stack on Windows using the frame pointer.
107 event.set_nativeStackTrace(NULL);
108 #else
109 ResourceMark rm;
110 stringStream stack_trace;
111 write_vm_stack_trace(&stack_trace);
112 event.set_nativeStackTrace(stack_trace.as_string());
113 #endif
114
115 event.set_size(word_size * BytesPerWord);
116 event.set_metadataType((u1) mdtype);
117 event.set_metaspaceObjectType((u1) objtype);
118 event.commit();
119 }
120 }
|
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
25 #include "precompiled.hpp"
26 #include "classfile/classLoaderData.hpp"
27 #include "memory/metaspaceTracer.hpp"
28 #include "trace/tracing.hpp"
29 #include "trace/traceBackend.hpp"
30
31 void MetaspaceTracer::report_gc_threshold(size_t old_val,
32 size_t new_val,
33 MetaspaceGCThresholdUpdater::Type updater) const {
34 EventMetaspaceGCThreshold event;
35 if (event.should_commit()) {
36 event.set_oldValue(old_val);
37 event.set_newValue(new_val);
38 event.set_updater((u1)updater);
39 event.commit();
40 }
41 }
42
43 void MetaspaceTracer::report_metaspace_allocation_failure(ClassLoaderData *cld,
44 size_t word_size,
45 MetaspaceObj::Type objtype,
46 Metaspace::MetadataType mdtype) const {
47 EventMetaspaceAllocationFailure event;
48 if (event.should_commit()) {
49 if (cld->is_anonymous()) {
50 event.set_classLoader(NULL);
51 event.set_anonymousClassLoader(true);
52 } else {
53 if (cld->is_the_null_class_loader_data()) {
54 event.set_classLoader((Klass*) NULL);
55 } else {
56 event.set_classLoader(cld->class_loader()->klass());
57 }
58 event.set_anonymousClassLoader(false);
59 }
60
61 event.set_size(word_size * BytesPerWord);
62 event.set_metadataType((u1) mdtype);
63 event.set_metaspaceObjectType((u1) objtype);
64 event.commit();
65 }
66 }
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