By Bill Blunden
Reminiscence allocation is an engaging sector, ripe in trade-offs and state-of-the-art learn. during this publication, invoice Blunden manages to supply a pretty-good review of the topic.
It starts with an advent of the bottom degrees - the undefined, particularly the CPU reminiscence administration unit. Then it is going directly to clarify how working platforms deal with reminiscence - segmentation, paging, digital reminiscence and what is among them. subsequent, reminiscence is tested at the programming-language point - compiler-level and heap allocation mechanisms in Fortran, COBOL, Pascal, C and at last Java.
The moment a part of the ebook is the perform: the writer implements a number of handbook reminiscence administration schemes (own implementations of malloc/free) in C++, and compares them by way of functionality and different features (like reminiscence fragmentation). ultimately, he implements a number of basic rubbish creditors (reference-counting, and mark-sweep), and within the final bankruptcy of the e-book additionally in brief mentions the real subject of sub-allocators (also often called "pools" or "arenas").
Overall, I loved the booklet. yet I do have a couple of issues of (constructive) feedback. firstly, the booklet is a section too conversational for this kind of technical paintings. It seems like a set of web publication posts, and therefore additionally lacks intensive. for instance, the part on reminiscence administration of home windows is sort of disappointing. up to i will be able to appreciate the author's try to exhibit his exploration approach armed by means of numerous tracing and tracking instruments, a lot of this data is celebrated and has been defined. as a substitute, i might anticipate a extra thorough presentation of the topic.
The different challenge is the C++ code. C++ code in books is a puppy peeve of mine - for a few cause it has a tendency to be incredibly undesirable in so much of them, and this e-book isn't any exception. I will not move into examples simply because there are just too many, so only a be aware of recommendation: if you happen to intend to persist with via this booklet really imposing the code (always a superb idea!) examine the algorithms the writer describes, yet write your personal implementation. there is not anything sturdy to profit from the C++ code during this booklet, that you can in addition get a few extra perform by yourself.
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Additional info for Memory Management: Algorithms and Implementations in C/C++ (Windows Programming/Development)
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A cursor that provides the ability to move only forward within a resultset is called a forward-only cursor. A cursor that provides the ability to move forward and backward within a resultset is called a scrollable cursor. A cursor that enables a user to change or delete data in addition to scrolling is referred to as a scrollable, updatable cursor. You can see that Visual C++ uses scrollable, updatable cursors when you open a query window. You can move back and forth through the records and edit the information in the records.