c3706668c6
Move libdebuggerd headers into their own directory for namespacing, move some includes to the top of their implementing files, delete some dead code. Test: mma, treehugger Change-Id: Ie4c44e32e2ab3bc678092899d257fd4ed634aa34
139 lines
4.1 KiB
C++
139 lines
4.1 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "DEBUG"
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#include "libdebuggerd/backtrace.h"
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#include <errno.h>
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#include <dirent.h>
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#include <limits.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ptrace.h>
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#include <sys/types.h>
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#include <time.h>
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#include <unistd.h>
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#include <memory>
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#include <string>
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#include <backtrace/Backtrace.h>
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#include <log/log.h>
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#include "libdebuggerd/utility.h"
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static void dump_process_header(log_t* log, pid_t pid, const char* process_name) {
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time_t t = time(NULL);
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struct tm tm;
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localtime_r(&t, &tm);
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char timestr[64];
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strftime(timestr, sizeof(timestr), "%F %T", &tm);
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_LOG(log, logtype::BACKTRACE, "\n\n----- pid %d at %s -----\n", pid, timestr);
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if (process_name) {
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_LOG(log, logtype::BACKTRACE, "Cmd line: %s\n", process_name);
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}
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_LOG(log, logtype::BACKTRACE, "ABI: '%s'\n", ABI_STRING);
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}
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static void dump_process_footer(log_t* log, pid_t pid) {
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_LOG(log, logtype::BACKTRACE, "\n----- end %d -----\n", pid);
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}
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static void log_thread_name(log_t* log, pid_t tid, const char* thread_name) {
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_LOG(log, logtype::BACKTRACE, "\n\"%s\" sysTid=%d\n", thread_name, tid);
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}
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static void dump_thread(log_t* log, BacktraceMap* map, pid_t pid, pid_t tid,
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const std::string& thread_name) {
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log_thread_name(log, tid, thread_name.c_str());
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std::unique_ptr<Backtrace> backtrace(Backtrace::Create(pid, tid, map));
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if (backtrace->Unwind(0)) {
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dump_backtrace_to_log(backtrace.get(), log, " ");
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} else {
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ALOGE("Unwind failed: tid = %d: %s", tid,
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backtrace->GetErrorString(backtrace->GetError()).c_str());
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}
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}
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void dump_backtrace(int fd, BacktraceMap* map, pid_t pid, pid_t tid, const std::string& process_name,
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const std::map<pid_t, std::string>& threads, std::string* amfd_data) {
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log_t log;
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log.tfd = fd;
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log.amfd_data = amfd_data;
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dump_process_header(&log, pid, process_name.c_str());
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dump_thread(&log, map, pid, tid, threads.find(tid)->second.c_str());
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for (const auto& it : threads) {
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pid_t thread_tid = it.first;
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const std::string& thread_name = it.second;
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if (thread_tid != tid) {
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dump_thread(&log, map, pid, thread_tid, thread_name.c_str());
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}
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}
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dump_process_footer(&log, pid);
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}
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void dump_backtrace_ucontext(int output_fd, ucontext_t* ucontext) {
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pid_t pid = getpid();
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pid_t tid = gettid();
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log_t log;
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log.tfd = output_fd;
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log.amfd_data = nullptr;
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char thread_name[16];
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read_with_default("/proc/self/comm", thread_name, sizeof(thread_name), "<unknown>");
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log_thread_name(&log, tid, thread_name);
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std::unique_ptr<Backtrace> backtrace(Backtrace::Create(pid, tid));
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if (backtrace->Unwind(0, ucontext)) {
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dump_backtrace_to_log(backtrace.get(), &log, " ");
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} else {
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ALOGE("Unwind failed: tid = %d: %s", tid,
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backtrace->GetErrorString(backtrace->GetError()).c_str());
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}
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}
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void dump_backtrace_header(int output_fd) {
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log_t log;
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log.tfd = output_fd;
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log.amfd_data = nullptr;
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char process_name[128];
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read_with_default("/proc/self/cmdline", process_name, sizeof(process_name), "<unknown>");
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dump_process_header(&log, getpid(), process_name);
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}
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void dump_backtrace_footer(int output_fd) {
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log_t log;
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log.tfd = output_fd;
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log.amfd_data = nullptr;
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dump_process_footer(&log, getpid());
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}
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void dump_backtrace_to_log(Backtrace* backtrace, log_t* log, const char* prefix) {
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for (size_t i = 0; i < backtrace->NumFrames(); i++) {
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_LOG(log, logtype::BACKTRACE, "%s%s\n", prefix, backtrace->FormatFrameData(i).c_str());
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}
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}
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