diff options
Diffstat (limited to 'core/host/stack_trace.c')
-rw-r--r-- | core/host/stack_trace.c | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/core/host/stack_trace.c b/core/host/stack_trace.c deleted file mode 100644 index adef66dd44..0000000000 --- a/core/host/stack_trace.c +++ /dev/null @@ -1,97 +0,0 @@ -/* Copyright 2014 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include <execinfo.h> -#include <signal.h> -#include <stdio.h> -#include <stdlib.h> - -#include "host_task.h" -#include "host_test.h" -#include "timer.h" - -#define SIGNAL_TRACE_DUMP SIGTERM -#define MAX_TRACE 30 -/* - * When trace dump is requested from signal handler, skip: - * _task_dump_trace_impl - * _task_dump_trace_dispath - * A function in libc - */ -#define SIGNAL_TRACE_OFFSET 3 -/* - * When trace dump is requested from task_dump_trace(), skip: - * task_dump_trace - * _task_dump_trace_impl - */ -#define DIRECT_TRACE_OFFSET 2 - -static pthread_t main_thread; - -static void __attribute__((noinline)) _task_dump_trace_impl(int offset) -{ - void *trace[MAX_TRACE]; - size_t sz; - char **messages; - char buf[256]; - FILE *file; - int i, nb; - - sz = backtrace(trace, MAX_TRACE); - messages = backtrace_symbols(trace + offset, sz - offset); - - for (i = 0; i < sz - offset; ++i) { - fprintf(stderr, "#%-2d %s\n", i, messages[i]); - /* %p is correct (as opposed to %pP) since this is the host */ - sprintf(buf, "addr2line %p -e %s", - trace[i + offset], __get_prog_name()); - file = popen(buf, "r"); - if (file) { - nb = fread(buf, 1, sizeof(buf) - 1, file); - buf[nb] = '\0'; - fprintf(stderr, " %s", buf); - pclose(file); - } - } - fflush(stderr); - free(messages); -} - -void __attribute__((noinline)) task_dump_trace(void) -{ - _task_dump_trace_impl(DIRECT_TRACE_OFFSET); -} - -static void __attribute__((noinline)) _task_dump_trace_dispatch(int sig) -{ - int need_dispatch = 1; - task_id_t running = task_get_running(); - - if (!pthread_equal(pthread_self(), main_thread)) { - need_dispatch = 0; - } else if (!task_start_called()) { - fprintf(stderr, "Stack trace of main thread:\n"); - need_dispatch = 0; - } else if (in_interrupt_context()) { - fprintf(stderr, "Stack trace of ISR:\n"); - } else { - fprintf(stderr, "Stack trace of task %d (%s):\n", - running, task_get_name(running)); - } - - if (need_dispatch) { - pthread_kill(task_get_thread(running), SIGNAL_TRACE_DUMP); - } else { - _task_dump_trace_impl(SIGNAL_TRACE_OFFSET); - exit(1); - } -} - -void task_register_tracedump(void) -{ - /* Trace dumper MUST be registered from main thread */ - main_thread = pthread_self(); - signal(SIGNAL_TRACE_DUMP, _task_dump_trace_dispatch); -} |