installed pty

[VSoRC/.git] / node_modules / node-pty / deps / winpty / src / agent / SimplePool.h

diff --git a/node_modules/node-pty/deps/winpty/src/agent/SimplePool.h b/node_modules/node-pty/deps/winpty/src/agent/SimplePool.h
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+// Copyright (c) 2015 Ryan Prichard
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+
+#ifndef SIMPLE_POOL_H
+#define SIMPLE_POOL_H
+
+#include <stdlib.h>
+
+#include <vector>
+
+#include "../shared/WinptyAssert.h"
+
+template <typename T, size_t chunkSize>
+class SimplePool {
+public:
+    ~SimplePool();
+    T *alloc();
+    void clear();
+private:
+    struct Chunk {
+        size_t count;
+        T *data;
+    };
+    std::vector<Chunk> m_chunks;
+};
+
+template <typename T, size_t chunkSize>
+SimplePool<T, chunkSize>::~SimplePool() {
+    clear();
+}
+
+template <typename T, size_t chunkSize>
+void SimplePool<T, chunkSize>::clear() {
+    for (size_t ci = 0; ci < m_chunks.size(); ++ci) {
+        Chunk &chunk = m_chunks[ci];
+        for (size_t ti = 0; ti < chunk.count; ++ti) {
+            chunk.data[ti].~T();
+        }
+        free(chunk.data);
+    }
+    m_chunks.clear();
+}
+
+template <typename T, size_t chunkSize>
+T *SimplePool<T, chunkSize>::alloc() {
+    if (m_chunks.empty() || m_chunks.back().count == chunkSize) {
+        T *newData = reinterpret_cast<T*>(malloc(sizeof(T) * chunkSize));
+        ASSERT(newData != NULL);
+        Chunk newChunk = { 0, newData };
+        m_chunks.push_back(newChunk);
+    }
+    Chunk &chunk = m_chunks.back();
+    T *ret = &chunk.data[chunk.count++];
+    new (ret) T();
+    return ret;
+}
+
+#endif // SIMPLE_POOL_H