2 * Copyright (c) 2008, 2009, 2010, 2011, 2013 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
20 #include "backtrace.h"
23 VLOG_DEFINE_THIS_MODULE(backtrace);
28 backtrace_capture(struct backtrace *b)
30 void *frames[BACKTRACE_MAX_FRAMES];
33 b->n_frames = backtrace(frames, BACKTRACE_MAX_FRAMES);
34 for (i = 0; i < b->n_frames; i++) {
35 b->frames[i] = (uintptr_t) frames[i];
41 backtrace_capture(struct backtrace *backtrace)
43 backtrace->n_frames = 0;
48 backtrace_format(const struct backtrace *b, struct ds *ds)
53 ds_put_cstr(ds, " (backtrace:");
54 for (i = 0; i < b->n_frames; i++) {
55 ds_put_format(ds, " 0x%08"PRIxPTR, b->frames[i]);
64 log_backtrace_at(const char *msg, const char *where)
67 struct ds ds = DS_EMPTY_INITIALIZER;
69 backtrace_capture(&b);
71 ds_put_format(&ds, "%s ", msg);
74 ds_put_cstr(&ds, where);
75 VLOG_ERR("%s", backtrace_format(&b, &ds));