Textractor/vnr/texthook/host/textthread_p.h

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#pragma once
// textthread_p.h
// 8/14/2013 jichi
// Branch: ITH/main_template.h, rev 66
#include <windows.h>
template <typename T>
void Release(const T &p) { delete p; }
// Prevent memory release.
// Used when T is basic types and will be automatically released (on stack).
#define MK_BASIC_TYPE(T) \
template<> \
void Release<T>(const T &p) {}
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template<class T, int default_size>
class MyVector
{
public:
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int Used() const { return used; }
T *Storage() const { return storage; }
void LockVector() { EnterCriticalSection(&cs_store); }
void UnlockVector() { LeaveCriticalSection(&cs_store); }
MyVector() : size(default_size), used(0)
{
InitializeCriticalSection(&cs_store);
storage = new T[size];
// jichi 9/21/2013: zero memory
// This would cause trouble if T is not an atomic type
::memset(storage, 0, sizeof(T) * size);
}
virtual ~MyVector()
{
if (storage)
delete[] storage;
DeleteCriticalSection(&cs_store);
storage = 0;
}
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protected:
void Reset()
{
EnterCriticalSection(&cs_store);
for (int i = 0; i < used; i++) {
Release<T>(storage[i]);
storage[i] = T();
}
used = 0;
LeaveCriticalSection(&cs_store);
}
void Remove(int index)
{
if (index>=used)
return;
Release<T>(storage[index]);
for (int i = index; i < used; i++)
storage[i] = storage[i+1];
used--;
}
void ClearMemory(int offset, int clear_size)
{
if (clear_size < 0)
return;
EnterCriticalSection(&cs_store);
if (offset+clear_size <= size)
::memset(storage+offset, 0, clear_size * sizeof(T)); // jichi 11/30/2013: This is the original code of ITH
LeaveCriticalSection(&cs_store);
//else __asm int 3
}
int AddToStore(const T *con,int amount)
{
if (amount <= 0 || con == 0)
return 0;
int status = 0;
EnterCriticalSection(&cs_store);
if (amount + used + 2 >= size) {
while (amount + used + 2 >= size)
size<<=1;
T *temp;
if (size * sizeof(T) < 0x1000000) {
temp = new T[size];
if (size > used)
::memset(temp, 0, (size - used) * sizeof(T)); // jichi 9/25/2013: zero memory
memcpy(temp, storage, used * sizeof(T));
} else {
size = default_size;
temp = new T[size];
::memset(temp, 0, sizeof(T) * size); // jichi 9/25/2013: zero memory
used = 0;
status = 1;
}
delete[] storage;
storage = temp;
}
memcpy(storage+used, con, amount * sizeof(T));
used += amount;
LeaveCriticalSection(&cs_store);
return status;
}
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CRITICAL_SECTION cs_store;
int size,
used;
T *storage;
};
// EOF