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Window Features - 更多技术 - 清泛网 - 专注C/C++及内核技术

...d windows. Each thread has a priority level that determines the amount of CPU time the thread receives. Although an application can set the priority level of its threads, normally the foreground thread has a slightly higher priority level than the background threads. Because it has a higher priorit...
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Is there a unique Android device ID?

... "35" + (Build.BOARD.length() % 10) + (Build.BRAND.length() % 10) + (Build.CPU_ABI.length() % 10) + (Build.DEVICE.length() % 10) + (Build.MANUFACTURER.length() % 10) + (Build.MODEL.length() % 10) + (Build.PRODUCT.length() % 10); // Thanks to @Roman SL! // https://stackoverflow.com/a/4789483...
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When is the thread pool used?

...e on the main execution thread. The only thing you can do is busy loop the CPU with in-memory computation, which will indeed starve the main execution thread and render your program unresponsive. How does Node.js decide to use a thread pool thread vs the listener thread? Why can't I write event ...
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Do asynchronous operations in ASP.NET MVC use a thread from ThreadPool on .NET 4

...ons (such as database and network calls to remote services). If you have a CPU intensive operation, asynchronous actions won't bring you much benefit. So why can we gain benefit from I/O intensive operations? Because we could use I/O Completion Ports. IOCP are extremely powerful because you do not...
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What is the strict aliasing rule?

...ut aliasing, it can omit those instructions, load buff[0] and buff[1] into CPU registers once before the loop is run, and speed up the body of the loop. Before strict aliasing was introduced, the compiler had to live in a state of paranoia that the contents of buff could change at anytime from anywh...
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Fastest way to determine if an integer's square root is an integer

...that works ~35% faster than your 6bits+Carmack+sqrt code, at least with my CPU (x86) and programming language (C/C++). Your results may vary, especially because I don't know how the Java factor will play out. My approach is threefold: First, filter out obvious answers. This includes negative nu...
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How to get started with developing Internet Explorer extensions?

... 8 will not load your add-on when starting unless you will build with "Any CPU" architecture and register using both 32 and 64 bit RegAsm.exe." was an edit by someone that got rejected. – Matsemann May 4 '13 at 19:24 ...
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Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4

...ause non-conforming programs to no longer work as expected, such as SPEC CPU 2006 464.h264ref and 416.gamess. A new option, -fno-aggressive-loop-optimizations, was added to disable this aggressive analysis. In some loops that have known constant number of iterations, but undefined behavior is ...
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How to find list of possible words from a letter matrix [Boggle Solver]

...h/execution info for comparison: model name : Intel(R) Core(TM)2 Duo CPU T9300 @ 2.50GHz cache size : 6144 KB Memory usage summary: heap total: 77057577, heap peak: 11446200, stack peak: 26448 total calls total memory failed calls malloc| 947212 68763684 ...
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Ruby: Can I write multi-line string with no concatenation?

...attr3, attr4, attr5, attr6, attr7 from table1, table2, table3, etc, etc, etc, etc, etc, where etc etc etc etc etc etc etc etc etc etc etc etc etc' Alternatively you can use a heredoc: conn.exec <<-eos select attr1, attr2, attr3, attr4, attr5, attr6, attr7 from ...