/// <summary>
/// 限制当前进程内存，
/// 剩余内存限制（系统可用内存最低限制）
/// 已使用内存限制（系统已用内存最高限制）
/// </summary>
/// <param name="avalidPhyMemoryMin">（当前操作系统）剩余内存限制（MB）</param>
/// <param name="usedMemMax">（当前应用程序）已使用内存限制（MB）</param>
public static void MemoryNeed(int avalidPhyMemoryMin, int usedMemMax)
{
uint avalidPhyMemory = MemoryHelper.GetAvalidPhyMemory();
long usedMem = MemoryHelper.WorkingSet64();
if (avalidPhyMemory < avalidPhyMemoryMin * 1024 * 1024 ||
usedMem > usedMemMax * 1024 * 1024)
{
throw new Exception(string.Format("当前系统资源不足以完成该操作，请释放部分资源后再试，剩余{0}<{1}，已使用{2}<{3}。",
avalidPhyMemory / (1024f * 1024), avalidPhyMemoryMin, usedMem / (1024f * 1024), usedMemMax));
}
}
private void GetBlockNumber(Size size, out int blockXNum, out int blockYNum, out int blockWidth, out int blockHeight)
{
int w = size.Width;
int h = size.Height;
blockXNum = 1;
blockYNum = 1;
blockWidth = w;
blockHeight = h;
int MaxX = 7000;
int MaxY = 2000;
uint mem = MemoryHelper.GetAvalidPhyMemory(); //系统剩余内存
long workingSet64 = MemoryHelper.WorkingSet64(); //为该进程已分配内存
if (mem < 200 * 1024.0f * 1024)
{
throw new Exception("当前系统资源不足以完成该操作，请释放部分资源后再试。");
}
double usemem = mem;//;
#if !WIN64
usemem = mem > 1800 * 1024.0f * 1024 - workingSet64 ? 1800 * 1024.0f * 1024 - workingSet64 : mem - workingSet64;
#endif
MaxY = (int)(usemem / 100 / w);
MaxY = MaxY < 2000 ? 2000 : MaxY;
if (size.Width * size.Height <= MaxX * MaxY)
{
return;
}
while (blockWidth > MaxX)
{
blockXNum++;
blockWidth = (int)Math.Floor((double)w / blockXNum);
}
while (blockHeight > MaxY)
{
blockYNum++;
blockHeight = (int)Math.Floor((double)h / blockYNum);
}
}
