61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
// Copyright 2019 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "util/linux/proc_task_reader.h"
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#include <stdio.h>
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#include <iterator>
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#include "base/files/file_path.h"
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#include "base/logging.h"
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#include "base/strings/string_number_conversions.h"
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#include "util/file/directory_reader.h"
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#include "util/misc/as_underlying_type.h"
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namespace crashpad {
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bool ReadThreadIDs(pid_t pid, std::vector<pid_t>* tids) {
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DCHECK(tids->empty());
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char path[32];
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snprintf(path, std::size(path), "/proc/%d/task", pid);
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DirectoryReader reader;
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if (!reader.Open(base::FilePath(path))) {
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return false;
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}
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std::vector<pid_t> local_tids;
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base::FilePath tid_str;
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DirectoryReader::Result result;
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while ((result = reader.NextFile(&tid_str)) ==
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DirectoryReader::Result::kSuccess) {
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pid_t tid;
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if (!base::StringToInt(tid_str.value(), &tid)) {
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LOG(ERROR) << "format error";
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continue;
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}
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local_tids.push_back(tid);
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}
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DCHECK_EQ(AsUnderlyingType(result),
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AsUnderlyingType(DirectoryReader::Result::kNoMoreFiles));
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DCHECK(!local_tids.empty());
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tids->swap(local_tids);
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return true;
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}
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} // namespace crashpad
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