winamp/Src/Wasabi/api/memmgr/api_memmgr.h

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2024-09-24 12:54:57 +00:00
#ifndef __API_MEMMGR_H
#define __API_MEMMGR_H
#include <bfc/dispatch.h>
#include <bfc/platform/types.h>
#include <new>
class NOVTABLE api_memmgr : public Dispatchable
{
protected:
api_memmgr() {}
~api_memmgr() {}
public:
void *sysMalloc(size_t size);
void sysFree(void *ptr);
void *sysRealloc(void *ptr, size_t newsize);
void sysMemChanged(void *ptr);
DISPATCH_CODES
{
API_MEMMGR_SYSMALLOC = 0,
API_MEMMGR_SYSFREE = 10,
API_MEMMGR_SYSREALLOC = 20,
API_MEMMGR_SYSMEMCHANGED = 30,
};
// Some helper templates to new and delete objects with the memory manager
// you need to be cautious with Delete() and inheritance, particularly if you're dealing with a base class
// as the pointer to the derived class might not equal to the pointer to the base class, particularly with multiple inheritance
// e.g. class C : public A, public B {}; C c; assert((A*)&c == (B*)&c); will likely fail
template <class Class>
void New(Class **obj)
{
size_t toAlloc = sizeof(Class);
void *mem = sysMalloc(toAlloc);
*obj = new (mem) Class;
}
template <class Class>
void Delete(Class *obj)
{
if (obj)
{
obj->~Class();
sysFree(obj);
}
}
};
inline void *api_memmgr::sysMalloc(size_t size)
{
return _call(API_MEMMGR_SYSMALLOC, (void *)NULL, size);
}
inline void api_memmgr::sysFree(void *ptr)
{
_voidcall(API_MEMMGR_SYSFREE, ptr);
}
inline void *api_memmgr::sysRealloc(void *ptr, size_t newsize)
{
return _call(API_MEMMGR_SYSREALLOC, (void *)NULL, ptr, newsize);
}
inline void api_memmgr::sysMemChanged(void *ptr)
{
_voidcall(API_MEMMGR_SYSMEMCHANGED, ptr);
}
// {000CF46E-4DF6-4a43-BBE7-40E7A3EA02ED}
static const GUID memMgrApiServiceGuid =
{ 0xcf46e, 0x4df6, 0x4a43, { 0xbb, 0xe7, 0x40, 0xe7, 0xa3, 0xea, 0x2, 0xed } };
extern api_memmgr *memmgrApi;
#endif