65 static void dump_thread(log_t* log, pid_t tid, ptrace_context_t* context, bool attached,  in dump_thread()  argument
72     snprintf(path, sizeof(path), "/proc/%d/comm", tid);  in dump_thread()
85             threadname ? threadname : "<unknown>", tid);  in dump_thread()
87     if (!attached && ptrace(PTRACE_ATTACH, tid, 0, 0) < 0) {  in dump_thread()
92     wait_for_stop(tid, total_sleep_time_usec);  in dump_thread()
95     ssize_t frames = unwind_backtrace_ptrace(tid, context, backtrace, 0, STACK_DEPTH);  in dump_thread()
110     if (!attached && ptrace(PTRACE_DETACH, tid, 0, 0) != 0) {  in dump_thread()
111         LOG("ptrace detach from %d failed: %s\n", tid, strerror(errno));  in dump_thread()
116 void dump_backtrace(int fd, int amfd, pid_t pid, pid_t tid, bool* detach_failed,  in dump_backtrace()  argument
123     ptrace_context_t* context = load_ptrace_context(tid);  in dump_backtrace()
125     dump_thread(&log, tid, context, true, detach_failed, total_sleep_time_usec);  in dump_backtrace()
139             if (*end || new_tid == tid) {  in dump_backtrace()