| // Copyright 2019 The Fuchsia 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 "tools/fidlcat/lib/exception_decoder.h" |
| |
| #include <lib/syslog/cpp/macros.h> |
| |
| #include "src/developer/debug/zxdb/client/frame.h" |
| #include "src/developer/debug/zxdb/client/process.h" |
| #include "src/developer/debug/zxdb/client/thread.h" |
| #include "tools/fidlcat/lib/interception_workflow.h" |
| |
| namespace fidlcat { |
| |
| void ExceptionDecoder::Decode() { |
| zxdb::Thread* thread = get_thread(); |
| if (thread == nullptr) { |
| Destroy(); |
| return; |
| } |
| if (thread->GetStack().has_all_frames()) { |
| Decoded(); |
| } else { |
| thread->GetStack().SyncFrames(false, [this](const zxdb::Err& /*err*/) { Decoded(); }); |
| } |
| } |
| |
| void ExceptionDecoder::Decoded() { |
| zxdb::Thread* thread = get_thread(); |
| if (thread == nullptr) { |
| Destroy(); |
| return; |
| } |
| |
| std::vector<zxdb::Location> caller_locations; |
| const zxdb::Stack& stack = thread->GetStack(); |
| if (stack.size() > 0) { |
| for (size_t i = stack.size() - 1;; --i) { |
| const zxdb::Frame* caller = stack[i]; |
| caller_locations.push_back(caller->GetLocation()); |
| if (i == 0) { |
| break; |
| } |
| } |
| } |
| |
| Thread* fidlcat_thread = dispatcher_->SearchThread(thread_id()); |
| if (fidlcat_thread == nullptr) { |
| Process* process = dispatcher_->SearchProcess(process_id()); |
| if (process == nullptr) { |
| process = dispatcher_->CreateProcess(process_name(), process_id(), |
| thread->GetProcess()->GetWeakPtr()); |
| } |
| fidlcat_thread = dispatcher_->CreateThread(thread_id(), process); |
| } |
| auto event = std::make_shared<ExceptionEvent>(timestamp(), fidlcat_thread); |
| CopyStackFrame(caller_locations, &event->stack_frame()); |
| dispatcher_->AddExceptionEvent(std::move(event)); |
| |
| Destroy(); |
| } |
| |
| void ExceptionDecoder::Destroy() { |
| InterceptionWorkflow* workflow = workflow_; |
| uint64_t process_id = process_id_; |
| uint64_t timestamp = timestamp_; |
| dispatcher_->DeleteDecoder(this); |
| workflow->ProcessDetached(process_id, timestamp); |
| } |
| |
| } // namespace fidlcat |