deque

I got some strange crash when running our android application on snapdragon device, but thing works well on other devices. Here are some logs before process die: W/Adreno-EGLSUB( 3075): <DequeueBuffer:583>: dequeue native buffer fail: Unknown error 2147483646, buffer=0x0, handle=0x0 W/Adreno-EGLSUB( 3075): <SwapBuffers:1300>: Invalid native buffer. Failed to queueBuffer W/Adreno-EGLSUB( 3075): <updater_thread:456>: native buffer is NULL D/QCUtilClass( 2464): extended extractor not needed, return default. and: E/BufferQueue( 357): [xxx.xxxx.xxxxx(our game app)] dequeueBuffer: can't dequeue

参考文档: http://docs.oracle.com/javase/8/docs/api/ Queue队列的所有已知实现类: 该接口继承Iterable,Collection接口.除了继承的接口的方法外,它有自身操作队列的一些公有的方法:offer/poll/peek. 队列里面的插入:offer,取出顶层元素:poll,查询顶层元素:peek/element.不建议使用集合类的方法,add,remove,addAll.因为操作失败是报异常,需要去捕获异常然后调用线程等待之类的方法. 另外,队列的传入值一般不建议插入null. 子接口: BlockingQueue <E>, 集合类方法:add/remove/addAll等,在操作失败抛出异常. 队列方法:offer/poll/peek,在操作失败返回null或者false. 队列方法put/take/操作失败一直重试. 队列方法:put(e,time,unit),重试最大时间,如果还是失败就退出. 不容许插入null对象,如果取出顶层元素失败(执行poll),则返回null. 可能是有边界的,这种情况下,该队列如果制定边界.那么超过边界的对象不再被接受.如果没指名边界,那么边界就是整行的最大值. 不支持close/shutdown这样的方法,线程安全. 是BlockingDeque,Transfer的父接口.

Just wondering why they made a LinkedBlockingDeque while the same non concurrent counterpart is an ArrayDeque which is backed on a resizable array. LinkedBlockingQueue use a set of nodes like a LinkedList (even though not implementing List ). I am aware of the possibility to use an ArrayBlockingQueue but what if one wanted to use an ArrayBlockingDeque ? Why is there not such an option? Thanks in advance. This May not be a proper question w.r.t stackoverflow. But i would Like to say something about these implementations. -> First thing We need to answer why we give Different implementations for

The STL standard defines that when an erase occurs on containers such as std::deque, std::list etc iterators are invalidated. My question is as follows, assuming the list of integers contained in a std::deque, and a pair of indicies indicating a range of elements in the std::deque, what is the correct way to delete all even elements? So far I have the following, however the problem here is that the assumed end is invalidated after an erase: #include <cstddef> #include <deque> int main() { std::deque<int> deq; for (int i = 0; i < 100; deq.push_back(i++)); // range, 11th to 51st element std:

I have the following scenario: I have a single thread that is supposed to fill a container with pairs of integers (in essence, task descriptions), and I have a large number of worker threads (8-16) that should take elements from this container and perform some work. I thought the problem could be easily solved by a blocking queue -- e.g. on item-removal, threads synchronize access to the queue, and sleep if there is no data available. I (perhaps wrongly) assumed that something like this should exist in the STL or in boost, but I was unable to find anything. Do I actually have to implement that

I am creating the cell programatically using the reuse identifier. Note - I am not using storyboard for creating the cell Whenever the cell is dequeued, the cell is nil, so the cell needs to be newly created using alloc, which is expensive. EDIT (added 1 more question and corrected code) Question Why does this dequeue always return nil ? How can I correct it ? Does dequeue work only when used along with storyboard / nib file ? Code - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell

I am almost certain this should be a duplicate but I searched for some time and could not find the answer. What should I use in C# to replace C++ vector and deque efficiently . That is I need a structure that supports direct indexing effieciently and also supports delete from one or both ends(depending on vector or deque case) again in an efficient manner. In java I usually use ArrayList at least for vector but for C# I found this source that states: ArrayList resizes dynamically. As elements are added, it grows in capacity to accommodate them. It is most often used in older C# programs. . So

I have encountered a problem invoking the following code: #include<deque> using namespace std; deque<int> deq = {0,1,2,3,4,5,6,7,8}; for(auto it = deq.begin(); it != deq.end(); it++){ if(*it%2 == 0) deq.erase(it); } which resulted in a segmentation fault. After looking into the problem I found that the problem resides in the way the STL manages iterators for deques: if the element being erased is closer to the end of the deque, the iterator used to point to the erased element will now point to the NEXT element, but not the previous element as vector::iterator does. I understand that modifying