forked from OSchip/llvm-project
45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
//===-- UserIDResolver.cpp --------------------------------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "lldb/Utility/UserIDResolver.h"
|
|
#include "llvm/Support/ManagedStatic.h"
|
|
|
|
using namespace lldb_private;
|
|
|
|
UserIDResolver::~UserIDResolver() = default;
|
|
|
|
llvm::Optional<llvm::StringRef> UserIDResolver::Get(
|
|
id_t id, Map &cache,
|
|
llvm::Optional<std::string> (UserIDResolver::*do_get)(id_t)) {
|
|
|
|
std::lock_guard<std::mutex> guard(m_mutex);
|
|
auto iter_bool = cache.try_emplace(id, llvm::None);
|
|
if (iter_bool.second)
|
|
iter_bool.first->second = (this->*do_get)(id);
|
|
if (iter_bool.first->second)
|
|
return llvm::StringRef(*iter_bool.first->second);
|
|
return llvm::None;
|
|
}
|
|
|
|
namespace {
|
|
class NoopResolver : public UserIDResolver {
|
|
protected:
|
|
llvm::Optional<std::string> DoGetUserName(id_t uid) override {
|
|
return llvm::None;
|
|
}
|
|
|
|
llvm::Optional<std::string> DoGetGroupName(id_t gid) override {
|
|
return llvm::None;
|
|
}
|
|
};
|
|
} // namespace
|
|
|
|
static llvm::ManagedStatic<NoopResolver> g_noop_resolver;
|
|
|
|
UserIDResolver &UserIDResolver::GetNoopResolver() { return *g_noop_resolver; }
|