| // Copyright 2021 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "components/viz/service/performance_hint/utils.h" |
| |
| #include "base/containers/contains.h" |
| #include "build/build_config.h" |
| |
| #if BUILDFLAG(IS_ANDROID) |
| #include "base/linux_util.h" |
| #endif |
| |
| namespace viz { |
| |
| bool CheckThreadIdsDoNotBelongToProcessIds( |
| const std::vector<base::ProcessId>& privileged_process_ids, |
| const base::flat_set<base::PlatformThreadId>& |
| thread_ids_from_sandboxed_process) { |
| #if BUILDFLAG(IS_ANDROID) |
| // This is inherently racy as threads or processes can die and the IDs can be |
| // reused at any time. But this is the best we can do. |
| for (auto& process_id : privileged_process_ids) { |
| std::vector<pid_t> privileged_thread_ids; |
| if (!base::GetThreadsForProcess(process_id, &privileged_thread_ids)) { |
| return false; |
| } |
| for (auto& tid : thread_ids_from_sandboxed_process) { |
| if (base::Contains(privileged_thread_ids, tid)) { |
| return false; |
| } |
| } |
| } |
| return true; |
| #else |
| return false; |
| #endif |
| } |
| |
| } // namespace viz |
