| // 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/common/performance_hint_utils.h" |
| |
| #include <vector> |
| |
| #include "base/containers/contains.h" |
| #include "base/logging.h" |
| #include "build/build_config.h" |
| |
| #if BUILDFLAG(IS_ANDROID) |
| #include "base/linux_util.h" |
| #endif |
| |
| namespace viz { |
| |
| bool CheckThreadIdsDoNotBelongToCurrentProcess( |
| const base::flat_set<base::PlatformThreadId>& |
| thread_ids_from_sandboxed_process) { |
| #if BUILDFLAG(IS_ANDROID) |
| // This function is similar to the one above, but it's based on /proc/self |
| // instead of /proc/<pid> under the hood. Unlike /proc/<pid>, /proc/self |
| // should be always accessible for the Browser and the GPU process on |
| // Android. |
| std::vector<pid_t> privileged_thread_ids; |
| if (!base::GetThreadsForCurrentProcess(&privileged_thread_ids)) { |
| return false; |
| } |
| static_assert(std::is_same_v<pid_t, base::PlatformThreadId::UnderlyingType>); |
| for (const auto& tid : thread_ids_from_sandboxed_process) { |
| if (base::Contains(privileged_thread_ids, tid.raw())) { |
| return false; |
| } |
| } |
| return true; |
| #else |
| return false; |
| #endif |
| } |
| |
| } // namespace viz |
