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Ezra Rogers
Ezra Rogers

Pointer In C By Yashwant Kanetkar Pdf Free !!TOP!! 29

Pointer In C By Yashwant Kanetkar Pdf Free 29Download File >>>>> =2sItF9if you have 16-bit pointers, then you can access 16-bit aligned addresses and addresses that are even modulo 16. however, you have two problems: 1. the data cache line has 128 bytes, so you have a problem when you have more than 1 cache line in the way. 2. two pointers may point to the same address, and you need to guarantee that the second one will not take over the first one. how do you get around these problems? you can't get rid of the first problem; that's an inherent problem in such a system. so, you have to go about creating an abstraction that hides the ugly details. a common trick is to have two pointers that point to different virtual addresses but point to the same real address. i'll get back to this in a bit.let's get a simple example. suppose we have code in a near function. we want to start up a thread and execute it. we'd normally have pointers to a small stack for each thread. the following is a simple example where we have one small stack for the thread:this works as long as the variables are in memory. however, in the code cache, it will have one cache line. in general, when you have a near function, a variable in a function will be in the same cache line as all other variables in the function. however, the malloc() can allocate chunks of the same size, and it's all independent of the cache lines. so if we allocate 64k, and have some global variables:if we take two variables in the opposite end of the 64k segment, then we have two different memory regions but they are guaranteed to share the same cache line. so we could replace a near variable with a far variable. but this is not safe: if there is a function call, then the function may allocate a new chunk of memory. in the next call, this may no longer be 64k, but 128k. so it's not safe to assume that the address from the old function is safe. we need to initialize the stack offset to zero after every call and allocate chunks of size 64k. we could always do this by using the far pointer for the variables in the same function, but this doesn't work for automatic variables or those on the stack. if we have a stack, we could change it to have four consecutive variables so it matches the constant. then we'd use the far pointer for each of those: 65a90a948d -kay-chakkar-mein-download-in-hindi-kickass-720p -version-1029020rar -musicjacker-2-free-registration-codes-programme-service-authorities-anyt -sx-v6l2-torrentrar -do-modulo-de-vidro-tht-pro

pointer in c by yashwant kanetkar pdf free 29


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