所以我尝试在android中实现一个消费者 - 生产者模式，场景是这样的：
WITH ProductSales
AS ( SELECT p.IDPr ,
p.Product ,
od.IDST ,
ISNULL(SUM(od.Quantity / pu.UnitQty), 0) AS TotalSalesQty
FROM dbo.OrdersSales AS oh
INNER JOIN dbo.OrdersSalesDetails AS od ON oh.OrdersID = od.OrdersID
INNER JOIN dbo.products AS p ON od.IDPr = p.IDPr
INNER JOIN dbo.ProductUnits AS pu ON p.IDPr = pu.IDPr
WHERE ( oh.OrdersKind = N'مبيعات' )
AND ( pu.UnitType = N'رئيسية' )
GROUP BY p.IDPr ,
p.Product ,
od.IDST
),
ProductFirstStock
AS ( SELECT p.IDPr ,
dbo.OrdersPurchasesDetails.IDST ,
ISNULL(SUM(dbo.OrdersPurchasesDetails.UserInputQty
* p.PurshPrice), 0) AS TotalFirstStocAmount ,
ISNULL(SUM(dbo.OrdersPurchasesDetails.UserInputQty), 0) AS TotalFirstStockQty
FROM dbo.OrdersPurchases
INNER JOIN dbo.OrdersPurchasesDetails ON dbo.OrdersPurchases.OrdersID = dbo.OrdersPurchasesDetails.OrdersID
INNER JOIN dbo.products AS p ON dbo.OrdersPurchasesDetails.IDPr = p.IDPr
WHERE ( dbo.OrdersPurchases.Kind = N'اول المدة' )
GROUP BY p.IDPr ,
dbo.OrdersPurchasesDetails.IDST
),
ProductPurchases
AS ( SELECT p.IDPr ,
OrdersPurchasesDetails_3.IDST ,
ISNULL(SUM(OrdersPurchasesDetails_3.ItemTotal), 0) AS TotalPurchasesAmount ,
ISNULL(SUM(OrdersPurchasesDetails_3.UserInputQty), 0) AS TotalPurchasesQty
FROM dbo.OrdersPurchases AS OrdersPurchases_3
INNER JOIN dbo.OrdersPurchasesDetails AS OrdersPurchasesDetails_3 ON OrdersPurchases_3.OrdersID = OrdersPurchasesDetails_3.OrdersID
INNER JOIN dbo.products AS p ON OrdersPurchasesDetails_3.IDPr = p.IDPr
WHERE ( OrdersPurchases_3.Kind = N'مشتريات' )
GROUP BY p.IDPr ,
OrdersPurchasesDetails_3.IDST
),
ProductSalesReturn
AS ( SELECT p.IDPr ,
od.IDST ,
ISNULL(SUM(od.Quantity / pu.UnitQty), 0) AS TotalSalesRetQty
FROM dbo.OrdersSales AS oh
INNER JOIN dbo.OrdersSalesDetails AS od ON oh.OrdersID = od.OrdersID
INNER JOIN dbo.products AS p ON od.IDPr = p.IDPr
INNER JOIN dbo.ProductUnits AS pu ON p.IDPr = pu.IDPr
WHERE ( oh.OrdersKind = N'مردودات مبيعات' )
AND ( pu.UnitType = N'رئيسية' )
GROUP BY p.IDPr ,
od.IDST
),
ProductPurchasesReturn
AS ( SELECT p.IDPr ,
OrdersPurchasesDetails_2.IDST ,
ISNULL(SUM(OrdersPurchasesDetails_2.UserInputQty), 0) AS TotalPurchasesRetQty ,
ISNULL(SUM(OrdersPurchasesDetails_2.ItemTotal), 0) AS TotalPurchasesReturnAmount
FROM dbo.OrdersPurchases AS OrdersPurchases_2
INNER JOIN dbo.OrdersPurchasesDetails AS OrdersPurchasesDetails_2 ON OrdersPurchases_2.OrdersID = OrdersPurchasesDetails_2.OrdersID
INNER JOIN dbo.products AS p ON OrdersPurchasesDetails_2.IDPr = p.IDPr
WHERE ( OrdersPurchases_2.Kind = N'مردودات مشتريات' )
GROUP BY p.IDPr ,
OrdersPurchasesDetails_2.IDST
),
ProductPurchasesTransfer
AS ( SELECT p.IDPr ,
OrdersPurchasesDetails_1.IDST ,
ISNULL(SUM(OrdersPurchasesDetails_1.UserInputQty), 0) AS TotalPurchasesTransQty
FROM dbo.OrdersPurchases AS OrdersPurchases_1
INNER JOIN dbo.OrdersPurchasesDetails AS OrdersPurchasesDetails_1 ON OrdersPurchases_1.OrdersID = OrdersPurchasesDetails_1.OrdersID
INNER JOIN dbo.products AS p ON OrdersPurchasesDetails_1.IDPr = p.IDPr
WHERE ( OrdersPurchases_1.Kind = N'تحويل' )
GROUP BY p.IDPr ,
OrdersPurchasesDetails_1.IDST
),
ProductSalesTransfer
AS ( SELECT p.IDPr ,
od.IDST ,
ISNULL(SUM(od.UserInputQty), 0) AS TotalSalesTransQty
FROM dbo.OrdersSales AS oh
INNER JOIN dbo.OrdersSalesDetails AS od ON oh.OrdersID = od.OrdersID
INNER JOIN dbo.products AS p ON od.IDPr = p.IDPr
WHERE ( oh.OrdersKind = N'تحويل' )
GROUP BY p.IDPr ,
od.IDST
)
SELECT s.IDST ,
s.Store,
p2.IDPr ,
p2.Product ,
pu.UnitName ,
ISNULL(( ISNULL(F.TotalFirstStockQty, 0)
+ ISNULL(B.TotalPurchasesQty, 0)
+ ISNULL(RS.TotalSalesRetQty, 0)
+ ISNULL(PT.TotalPurchasesTransQty, 0) )
- ( ISNULL(RP.TotalPurchasesRetQty, 0)
+ ISNULL(A.TotalSalesQty, 0)
+ ISNULL(ST.TotalSalesTransQty, 0) ), 0) AS Stock ,
CAST(ISNULL(AVG(( ISNULL(B.TotalPurchasesAmount, 0)
+ ISNULL(F.TotalFirstStocAmount, 0)
- ISNULL(RP.TotalPurchasesReturnAmount, 0) )
/ NULLIF(ISNULL(B.TotalPurchasesQty, 0)
+ ISNULL(F.TotalFirstStockQty, 0)
- ISNULL(RP.TotalPurchasesRetQty, 0), 0)),
0) AS DECIMAL(18, 3)) AS AvgPurchasePrice ,
ISNULL(( ISNULL(F.TotalFirstStockQty, 0)
+ ISNULL(B.TotalPurchasesQty, 0)
+ ISNULL(RS.TotalSalesRetQty, 0)
+ ISNULL(PT.TotalPurchasesTransQty, 0) )
- ( ISNULL(RP.TotalPurchasesRetQty, 0)
+ ISNULL(A.TotalSalesQty, 0)
+ ISNULL(ST.TotalSalesTransQty, 0) ), 0)
* CAST(ISNULL(AVG(( ISNULL(B.TotalPurchasesAmount, 0)
+ ISNULL(F.TotalFirstStocAmount, 0)
- ISNULL(RP.TotalPurchasesReturnAmount, 0) )
/ NULLIF(ISNULL(B.TotalPurchasesQty, 0)
+ ISNULL(F.TotalFirstStockQty, 0)
- ISNULL(RP.TotalPurchasesRetQty, 0), 0)),
0) AS DECIMAL(18, 3)) AS StockValue
FROM dbo.products AS p2
LEFT OUTER JOIN ProductSales AS A ON A.IDPr = p2.IDPr
LEFT OUTER JOIN ProductFirstStock AS F ON p2.IDPr = F.IDPr
LEFT OUTER JOIN ProductPurchases AS B ON p2.IDPr = B.IDPr
LEFT OUTER JOIN ProductSalesReturn AS RS ON p2.IDPr = RS.IDPr
LEFT OUTER JOIN ProductPurchasesReturn AS RP ON p2.IDPr = RP.IDPr
LEFT OUTER JOIN ProductPurchasesTransfer AS PT ON PT.IDPr = p2.IDPr
LEFT OUTER JOIN ProductSalesTransfer AS ST ON ST.IDPr = p2.IDPr
LEFT OUTER JOIN dbo.Stores AS s ON s.IDST = A.IDST
AND s.IDST = B.IDST
AND s.IDST = F.IDST
AND s.IDST = PT.IDST
AND s.IDST = RP.IDST
AND s.IDST = RS.IDST
AND s.IDST = ST.IDST
LEFT OUTER JOIN dbo.ProductUnits AS pu ON pu.IDPr = p2.IDPr
WHERE pu.UnitType = N'رئيسية'
GROUP BY F.TotalFirstStockQty ,
B.TotalPurchasesQty ,
RS.TotalSalesRetQty ,
RP.TotalPurchasesRetQty ,
A.TotalSalesQty ,
PT.TotalPurchasesTransQty ,
ST.TotalSalesTransQty ,
p2.IDPr ,
p2.Product ,
s.IDST ,
s.Store ,
pu.UnitName
ORDER BY p2.IDPr
但是，当我运行此代码时...它永远不会生成IMAGE_AVOIDED日志语句..它在IMAGE_TAKEN和IMAGE_PUSHED之间交替..一帧被推..并且一帧被处理..
我希望我能够不断地将帧放入mProcessingQueue，当消费者线程准备就绪时，从队列中取出......这样我就可以在队列已满时删除帧并且只放置最新的帧框架进入队列以接近实时..
我确定它是一个同步问题。也许我在一个进程中运行相同的两个线程，因此调度程序希望来回执行任务？
任何想法/指针??
答案 0 :(得分：0)
所以事实证明上面的实现是正确的..但是我在onPreviewFrame函数调用中做了一些计算..这给了消费者线程足够的时间来执行手头的工作..谢谢大家！