| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "src/trace_processor/importers/syscalls/syscall_tracker.h" |
| |
| #include <cinttypes> |
| #include <type_traits> |
| #include <utility> |
| |
| #include "perfetto/ext/base/string_utils.h" |
| #include "src/kernel_utils/syscall_table.h" |
| #include "src/trace_processor/storage/stats.h" |
| |
| namespace perfetto { |
| namespace trace_processor { |
| |
| // TODO(primiano): The current design is broken in case of 32-bit processes |
| // running on 64-bit kernel. At least on ARM, the syscal numbers don't match |
| // and we should use the kSyscalls_Aarch32 table for those processes. But this |
| // means that the architecture is not a global property but is per-process. |
| // Which in turn means that somehow we need to figure out what is the bitness |
| // of each process from the trace. |
| SyscallTracker::SyscallTracker(TraceProcessorContext* context) |
| : context_(context) { |
| SetArchitecture(kUnknown); |
| } |
| |
| SyscallTracker::~SyscallTracker() = default; |
| |
| void SyscallTracker::SetArchitecture(Architecture arch) { |
| SyscallTable syscalls(arch); |
| |
| for (size_t i = 0; i < kMaxSyscalls; i++) { |
| StringId id = kNullStringId; |
| const char* name = syscalls.GetById(i); |
| if (name && *name) { |
| id = context_->storage->InternString(name); |
| if (!strcmp(name, "sys_write")) |
| sys_write_string_id_ = id; |
| } else { |
| base::StackString<64> unknown_str("sys_%zu", i); |
| id = context_->storage->InternString(unknown_str.string_view()); |
| } |
| arch_syscall_to_string_id_[i] = id; |
| } |
| } |
| |
| } // namespace trace_processor |
| } // namespace perfetto |