1 files changed, 0 insertions, 96 deletions
diff --git a/contrib/pzstd/utils/ResourcePool.h b/contrib/pzstd/utils/ResourcePool.h
deleted file mode 100644
index 8dfcdd765909c..0000000000000
--- a/contrib/pzstd/utils/ResourcePool.h
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * Copyright (c) 2016-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under both the BSD-style license (found in the
- * LICENSE file in the root directory of this source tree) and the GPLv2 (found
- * in the COPYING file in the root directory of this source tree).
- */
-#pragma once
-
-#include <cassert>
-#include <functional>
-#include <memory>
-#include <mutex>
-#include <vector>
-
-namespace pzstd {
-
-/**
- * An unbounded pool of resources.
- * A `ResourcePool<T>` requires a factory function that takes allocates `T*` and
- * a free function that frees a `T*`.
- * Calling `ResourcePool::get()` will give you a new `ResourcePool::UniquePtr`
- * to a `T`, and when it goes out of scope the resource will be returned to the
- * pool.
- * The `ResourcePool<T>` *must* survive longer than any resources it hands out.
- * Remember that `ResourcePool<T>` hands out mutable `T`s, so make sure to clean
- * up the resource before or after every use.
- */
-template <typename T>
-class ResourcePool {
- public:
-  class Deleter;
-  using Factory = std::function<T*()>;
-  using Free = std::function<void(T*)>;
-  using UniquePtr = std::unique_ptr<T, Deleter>;
-
- private:
-  std::mutex mutex_;
-  Factory factory_;
-  Free free_;
-  std::vector<T*> resources_;
-  unsigned inUse_;
-
- public:
-  /**
-   * Creates a `ResourcePool`.
-   *
-   * @param factory  The function to use to create new resources.
-   * @param free     The function to use to free resources created by `factory`.
-   */
-  ResourcePool(Factory factory, Free free)
-      : factory_(std::move(factory)), free_(std::move(free)), inUse_(0) {}
-
-  /**
-   * @returns  A unique pointer to a resource.  The resource is null iff
-   *           there are no available resources and `factory()` returns null.
-   */
-  UniquePtr get() {
-    std::lock_guard<std::mutex> lock(mutex_);
-    if (!resources_.empty()) {
-      UniquePtr resource{resources_.back(), Deleter{*this}};
-      resources_.pop_back();
-      ++inUse_;
-      return resource;
-    }
-    UniquePtr resource{factory_(), Deleter{*this}};
-    ++inUse_;
-    return resource;
-  }
-
-  ~ResourcePool() noexcept {
-    assert(inUse_ == 0);
-    for (const auto resource : resources_) {
-      free_(resource);
-    }
-  }
-
-  class Deleter {
-    ResourcePool *pool_;
-  public:
-    explicit Deleter(ResourcePool &pool) : pool_(&pool) {}
-
-    void operator() (T *resource) {
-      std::lock_guard<std::mutex> lock(pool_->mutex_);
-      // Make sure we don't put null resources into the pool
-      if (resource) {
-        pool_->resources_.push_back(resource);
-      }
-      assert(pool_->inUse_ > 0);
-      --pool_->inUse_;
-    }
-  };
-};
-
-}