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Replace std::lock_guard and std::lock with std::scoped_lock (#1758)

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std::scoped_lock was introduced in C++17 and is strictly better than
std::lock_guard as it supports locking any number of mutexes safely.
It's also easier to use than std::lock for locking multiple mutexes at
once.
This commit is contained in:
Tyler Veness
2019-07-08 22:58:39 -07:00
committed by Peter Johnson
parent 24d31df55a
commit 62be0392b6
79 changed files with 472 additions and 476 deletions
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10
wpilibc/src/main/native/cpp/ErrorBase.cpp
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@@ -40,13 +40,13 @@ GlobalErrors& GlobalErrors::GetInstance() {
void GlobalErrors::Insert(const Error& error) {
GlobalErrors& inst = GetInstance();
std::lock_guard lock(inst.mutex);
std::scoped_lock lock(inst.mutex);
inst.lastError = &(*inst.errors.insert(error).first);
}
void GlobalErrors::Insert(Error&& error) {
GlobalErrors& inst = GetInstance();
std::lock_guard lock(inst.mutex);
std::scoped_lock lock(inst.mutex);
inst.lastError = &(*inst.errors.insert(std::move(error)).first);
}
@@ -165,14 +165,14 @@ void ErrorBase::SetGlobalWPIError(const wpi::Twine& errorMessage,
Error ErrorBase::GetGlobalError() {
auto& inst = GlobalErrors::GetInstance();
std::lock_guard mutex(inst.mutex);
std::scoped_lock mutex(inst.mutex);
if (!inst.lastError) return Error{};
return *inst.lastError;
}
std::vector<Error> ErrorBase::GetGlobalErrors() {
auto& inst = GlobalErrors::GetInstance();
std::lock_guard mutex(inst.mutex);
std::scoped_lock mutex(inst.mutex);
std::vector<Error> rv;
for (auto&& error : inst.errors) rv.push_back(error);
return rv;
@@ -180,7 +180,7 @@ std::vector<Error> ErrorBase::GetGlobalErrors() {
void ErrorBase::ClearGlobalErrors() {
auto& inst = GlobalErrors::GetInstance();
std::lock_guard mutex(inst.mutex);
std::scoped_lock mutex(inst.mutex);
inst.errors.clear();
inst.lastError = nullptr;
}