1 files changed, 0 insertions, 126 deletions
diff --git a/lldb/source/Host/common/TaskPool.cpp b/lldb/source/Host/common/TaskPool.cpp
deleted file mode 100644
index 73f761b5cf63a..0000000000000
--- a/lldb/source/Host/common/TaskPool.cpp
+++ /dev/null
@@ -1,126 +0,0 @@
-//===--------------------- TaskPool.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/Host/TaskPool.h"
-#include "lldb/Host/ThreadLauncher.h"
-#include "lldb/Utility/Log.h"
-
-#include <cstdint>
-#include <queue>
-#include <thread>
-
-namespace lldb_private {
-
-namespace {
-class TaskPoolImpl {
-public:
-  static TaskPoolImpl &GetInstance();
-
-  void AddTask(std::function<void()> &&task_fn);
-
-private:
-  TaskPoolImpl();
-
-  static lldb::thread_result_t WorkerPtr(void *pool);
-
-  static void Worker(TaskPoolImpl *pool);
-
-  std::queue<std::function<void()>> m_tasks;
-  std::mutex m_tasks_mutex;
-  uint32_t m_thread_count;
-};
-
-} // end of anonymous namespace
-
-TaskPoolImpl &TaskPoolImpl::GetInstance() {
-  static TaskPoolImpl g_task_pool_impl;
-  return g_task_pool_impl;
-}
-
-void TaskPool::AddTaskImpl(std::function<void()> &&task_fn) {
-  TaskPoolImpl::GetInstance().AddTask(std::move(task_fn));
-}
-
-TaskPoolImpl::TaskPoolImpl() : m_thread_count(0) {}
-
-unsigned GetHardwareConcurrencyHint() {
-  // std::thread::hardware_concurrency may return 0 if the value is not well
-  // defined or not computable.
-  static const unsigned g_hardware_concurrency = 
-    std::max(1u, std::thread::hardware_concurrency());
-  return g_hardware_concurrency;
-}
-
-void TaskPoolImpl::AddTask(std::function<void()> &&task_fn) {
-  const size_t min_stack_size = 8 * 1024 * 1024;
-
-  std::unique_lock<std::mutex> lock(m_tasks_mutex);
-  m_tasks.emplace(std::move(task_fn));
-  if (m_thread_count < GetHardwareConcurrencyHint()) {
-    m_thread_count++;
-    // Note that this detach call needs to happen with the m_tasks_mutex held.
-    // This prevents the thread from exiting prematurely and triggering a linux
-    // libc bug (https://sourceware.org/bugzilla/show_bug.cgi?id=19951).
-    llvm::Expected<HostThread> host_thread =
-        lldb_private::ThreadLauncher::LaunchThread(
-            "task-pool.worker", WorkerPtr, this, min_stack_size);
-    if (host_thread) {
-      host_thread->Release();
-    } else {
-      LLDB_LOG(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST),
-               "failed to launch host thread: {}",
-               llvm::toString(host_thread.takeError()));
-    }
-  }
-}
-
-lldb::thread_result_t TaskPoolImpl::WorkerPtr(void *pool) {
-  Worker((TaskPoolImpl *)pool);
-  return {};
-}
-
-void TaskPoolImpl::Worker(TaskPoolImpl *pool) {
-  while (true) {
-    std::unique_lock<std::mutex> lock(pool->m_tasks_mutex);
-    if (pool->m_tasks.empty()) {
-      pool->m_thread_count--;
-      break;
-    }
-
-    std::function<void()> f = std::move(pool->m_tasks.front());
-    pool->m_tasks.pop();
-    lock.unlock();
-
-    f();
-  }
-}
-
-void TaskMapOverInt(size_t begin, size_t end,
-                    const llvm::function_ref<void(size_t)> &func) {
-  const size_t num_workers = std::min<size_t>(end, GetHardwareConcurrencyHint());
-  std::atomic<size_t> idx{begin};
-  
-  auto wrapper = [&idx, end, &func]() {
-    while (true) {
-      size_t i = idx.fetch_add(1);
-      if (i >= end)
-        break;
-      func(i);
-    }
-  };
-
-  std::vector<std::future<void>> futures;
-  futures.reserve(num_workers);
-  for (size_t i = 0; i < num_workers; i++)
-    futures.push_back(TaskPool::AddTask(wrapper));
-  for (size_t i = 0; i < num_workers; i++)
-    futures[i].wait();
-}
-
-} // namespace lldb_private
-