28219f7f99
The following patch is result of libsanitizer/merge.sh from c425db2eb558c263 (yesterday evening). Bootstrapped/regtested on x86_64-linux and i686-linux (together with the follow-up 3 patches I'm about to post). BTW, seems upstream has added riscv64 support for I think lsan/tsan, so if anyone is willing to try it there, it would be a matter of copying e.g. the s390*-*-linux* libsanitizer/configure.tgt entry to riscv64-*-linux* with the obvious s/s390x/riscv64/ change in it.
94 lines
2.4 KiB
C++
94 lines
2.4 KiB
C++
//===-- sanitizer_thread_arg_retval.cpp -------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is shared between sanitizer tools.
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//
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// Tracks thread arguments and return value for leak checking.
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//===----------------------------------------------------------------------===//
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#include "sanitizer_thread_arg_retval.h"
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#include "sanitizer_placement_new.h"
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namespace __sanitizer {
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void ThreadArgRetval::CreateLocked(uptr thread, bool detached,
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const Args& args) {
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CheckLocked();
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Data& t = data_[thread];
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t = {};
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t.gen = gen_++;
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t.detached = detached;
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t.args = args;
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}
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ThreadArgRetval::Args ThreadArgRetval::GetArgs(uptr thread) const {
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__sanitizer::Lock lock(&mtx_);
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auto t = data_.find(thread);
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CHECK(t);
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if (t->second.done)
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return {};
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return t->second.args;
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}
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void ThreadArgRetval::Finish(uptr thread, void* retval) {
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__sanitizer::Lock lock(&mtx_);
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auto t = data_.find(thread);
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if (!t)
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return;
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if (t->second.detached) {
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// Retval of detached thread connot be retrieved.
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data_.erase(t);
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return;
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}
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t->second.done = true;
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t->second.args.arg_retval = retval;
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}
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u32 ThreadArgRetval::BeforeJoin(uptr thread) const {
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__sanitizer::Lock lock(&mtx_);
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auto t = data_.find(thread);
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CHECK(t);
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CHECK(!t->second.detached);
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return t->second.gen;
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}
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void ThreadArgRetval::AfterJoin(uptr thread, u32 gen) {
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__sanitizer::Lock lock(&mtx_);
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auto t = data_.find(thread);
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if (!t || gen != t->second.gen) {
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// Thread was reused and erased by any other event.
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return;
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}
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CHECK(!t->second.detached);
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data_.erase(t);
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}
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void ThreadArgRetval::DetachLocked(uptr thread) {
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CheckLocked();
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auto t = data_.find(thread);
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CHECK(t);
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CHECK(!t->second.detached);
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if (t->second.done) {
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// We can't retrive retval after detached thread finished.
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data_.erase(t);
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return;
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}
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t->second.detached = true;
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}
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void ThreadArgRetval::GetAllPtrsLocked(InternalMmapVector<uptr>* ptrs) {
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CheckLocked();
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CHECK(ptrs);
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data_.forEach([&](DenseMap<uptr, Data>::value_type& kv) -> bool {
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ptrs->push_back((uptr)kv.second.args.arg_retval);
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return true;
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});
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}
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} // namespace __sanitizer
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