Sha256: 354340cf4a23de6529508630202c1b39f14dbb82cec99a2b07b13900378ea102
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Size: 1.6 KB
Versions: 14
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Stored size: 1.6 KB
Contents
#ifndef SASS_MEMORY_MANAGER_H
#define SASS_MEMORY_MANAGER_H
#include <vector>
namespace Sass {
class Memory_Object {
friend class Memory_Manager;
long refcount;
public:
Memory_Object() { refcount = 0; };
virtual ~Memory_Object() {};
};
/////////////////////////////////////////////////////////////////////////////
// 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.
/////////////////////////////////////////////////////////////////////////////
class Memory_Manager {
std::vector<Memory_Object*> nodes;
public:
Memory_Manager(size_t size = 0);
~Memory_Manager();
bool has(Memory_Object* np);
Memory_Object* allocate(size_t size);
void deallocate(Memory_Object* np);
void remove(Memory_Object* np);
void destroy(Memory_Object* np);
Memory_Object* add(Memory_Object* np);
};
}
///////////////////////////////////////////////////////////////////////////////
// Use macros for the allocation task, since overloading operator `new`
// has been proven to be flaky under certain compilers (see comment below).
///////////////////////////////////////////////////////////////////////////////
#define SASS_MEMORY_NEW(mgr, Class, ...) \
(static_cast<Class*>(mgr.add(new (mgr.allocate(sizeof(Class))) Class(__VA_ARGS__)))) \
#endif
Version data entries
14 entries across 14 versions & 2 rubygems