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Contents
#ifndef SASS_MEMORY_MANAGER_H
#define SASS_MEMORY_MANAGER_H
#include <vector>
#include <iostream>
namespace Sass {
using namespace std;
/////////////////////////////////////////////////////////////////////////////
// A class for tracking allocations of AST_Node objects. The intended usage
// is something like: Some_Node* n = new (mem_mgr) Some_Node(...);
// Then, at the end of the program, the memory manager will delete all of the
// allocated nodes that have been passed to it.
// In the future, this class may implement a custom allocator.
/////////////////////////////////////////////////////////////////////////////
template <typename T>
class Memory_Manager {
vector<T*> nodes;
public:
Memory_Manager(size_t size = 0) : nodes(vector<T*>())
{ nodes.reserve(size); }
~Memory_Manager()
{
for (size_t i = 0, S = nodes.size(); i < S; ++i) {
// cout << "deleting " << typeid(*nodes[i]).name() << endl;
delete nodes[i];
}
}
T* operator()(T* np)
{
nodes.push_back(np);
// cout << "registering " << typeid(*np).name() << endl;
return np;
}
void remove(T* np)
{
nodes.erase(find(nodes.begin(), nodes.end(), np));
}
};
}
template <typename T>
inline void* operator new(size_t size, Sass::Memory_Manager<T>& mem_mgr)
{ return mem_mgr(static_cast<T*>(operator new(size))); }
template <typename T>
inline void operator delete(void *np, Sass::Memory_Manager<T>& mem_mgr)
{
mem_mgr.remove(reinterpret_cast<T*>(np));
operator delete(np);
}
#endif
Version data entries
17 entries across 17 versions & 2 rubygems