In UC Berkley Video lectures on OS by John Kubiatowicz (Prof. Kuby) available on web, he mentioned that TLB hit doesn\'t mean that corresponding page is in main memory. Page fault can still occur.
W开发者_如何学Chen memory (suppose some kernel memory buffer) is mapped into userspace, what is it that happens? Is it that the entries in the page tables of the user process\'s struct mm are modified
A standard c++ qmake-based library is developed for Win32, Mac, and Linux. In the qmake project file, the platform-dependent sources are included like this:
I am now working on an iphone project. I want to use a core plot chart into a table view cell in ios. I am usin开发者_开发百科g xcode3 and ios 4.2 versions. Now the chart is displayed in a separate vi
I have been trying to understand the difference between these two process creation flags. The msdn documentation is not clear about the distinction.
I have a timer with fixed timeslice 1s, setitimer(SIGPROF, ×lice, NULL);. When I run the process with one thread, the sighandler is invoked once in one second. However, if there are two or mo
I have 开发者_Python百科never understood semaphores well enough. Every time, I venture to understand them, something pops up, which I don\'t understand.
I have a rake task th开发者_运维百科at performs a shell command. When I run it from bash, the substitution worked, but when I run the rake task, the substitution did not take place.
Consider the function/process, void task_fun(void) { while(1) } If this process were to run on a normal PC OS, it would happily run forever. But on a mobile phone, it would surely crash the entire p
I need to profile the performance of an application for which I am using strace. However, I do not really know how to interpret the various system calls the strace emits. Examples of a few of them are
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