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Memory Management: Algorithms and Implementation in C/C++ (Anglais) Broché – 30 septembre 2002


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Memory Management Memory Management: Algorithms and Implementation in C/C++ describes how to construct production-quality memory managers. This approach includes both high-performance explicit memory managers and more intricate garbage collectors like those popularized by the Java Virtual Machine. Every implementation is complemented by an in-depth presentation of theory, benchmark tests, extensive source code examples, and a discussion of each implementation's trade-offs.


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Amazon.com: 8 commentaires
27 internautes sur 31 ont trouvé ce commentaire utile 
Lacking substance and focus 5 juin 2004
Par Un client - Publié sur Amazon.com
Format: Broché
I work in a field where memory management is absolutely critical and was greatly looking forward to this book greatly. However it turned out to be a massive disappointment. The title is memory management, algorithms and implementations. However, the algorithms don't even really start until the last third of the book, and when they do, they are overly simple, and barely touch on the theory or critical characteristics behind the algorithms. This book is filled with useless tangents, some of the most random of which involving microkernal versus monolithic kernal, scanning of faces at the Super Bowl, and instructions for setting the 80x line of chips from real to protected mode! This book presents no practically useful algorithms, as all of the handling of cases such as growing the memory block are left as 'excercises for the reader' as are performance improvments even though final performance is essential in order to be able to properly compare and contrast the algorithms.
In closing, skip this book and pick up either 'Operating System Concepts 6th ed' or 'Operating Systems: Design and Implemenation 2nd ed' which actually have meaningful insight into practical approaches for memory management and concerns.
12 internautes sur 13 ont trouvé ce commentaire utile 
Nuts and Bolts Perspective 23 février 2003
Par Un client - Publié sur Amazon.com
Format: Broché
While a lot of books on computer memory end up abstracting their discussion somehow, Blunden's book lies at the opposite end of the spectrum. All aspects of computer memory are examined (hardware level, OS level, application level) and in each instance concrete, non-trivial, examples are presented. Nothing, and I mean nothing, is left to the imagination. This book is nothing short of an exhaustive look at memory management. Engineers interested in this traditionally neglected topic should buy this book!
Having read other reviews, I will agree that the material in the last chapter is just a little prophetic.
7 internautes sur 7 ont trouvé ce commentaire utile 
Developmental history and some examples of Code 22 juillet 2004
Par Mark W Mitchell - Publié sur Amazon.com
Format: Broché Achat vérifié
This book, is one of the few computer books I have read from cover to cover - code listings are easy to scan/skip, and the book itself is not huge (however the cost seems fairly high for the size).

This book is clearly written, and well researched. It is not for beginners.

This book spends time on the hardware aspects of Memory management based on the Intel 386 and above architecture. Real Mode versus protected mode and how the processor design allows for memory protection in protected mode.

This is then followed by a survey of Operating Systems, from DOS to Linux to Windows - which is moving from the simple to the complex - and how the OS provides Memory Management services.

Then the development of computer languages, and how they allow for memory management starting with COBOL and moving on to Object oriented C++ and Java Virtual Machines.

Finally the last part of the book has a lot of code listings with very simplistic memory management and moving into slightly more complex algorithms for memory management for programs. The focus is on introducing multiple approaches and how to measure the real performance of each - some parts of this part of the book seemed like they were repeating the same text in making comments about the code.

Overall, I liked the book. I read the Pentium Protected Mode architecture book last year, and it prepared me for this book.

I have not done much assembly level x86 programming, but enough to understand what was being shown in the early examples.

The book has a very good bibilography of sources for each chapter - six long chapters. I felt, while looking at these bibilographies, that the time spent in going through all of the items in the bibliography was part of the reason that this books price was set so high. The references here are thorough and identify some turning points in computer sciences to me.

The structure of the book is the layers by which memory managment is accomplshed - the memory management code is more of an intro. I felt that the book might be targeting Computer Science courses as its real market - the books structure lays down a good foundation for further exploration.

The deeper development of Memory Management algorithms is where I too found the book lacking, and the title a bit deceiving - a complaint from another that I would agree with. This is the reason for not giving 5 stars. It would have taken a lot more time to develop the code and write explanations for more complex approaches and the author states this repeatedly in this algorithm section of the book.

I am inspired from this book to learn more about x86 assembly language, and to study the actual code of the Linux Kernel.

If that sounds of interest to you too, then you should buy this book.
2 internautes sur 2 ont trouvé ce commentaire utile 
Insightful book with some problems 21 mai 2010
Par Eli Bendersky - Publié sur Amazon.com
Format: Broché
Memory allocation is a fascinating area, ripe in trade-offs and cutting-edge research. In this book, Bill Blunden manages to provide a pretty-good overview of the topic.

It begins with an introduction of the lowest levels - the hardware, namely the CPU memory management unit. Then it goes on to explain how operating systems manage memory - segmentation, paging, virtual memory and what's between them. Next, memory is examined on the programming-language level - compiler-level and heap allocation mechanisms in Fortran, COBOL, Pascal, C and finally Java.

The second part of the book is the practice: the author implements several manual memory management schemes (own implementations of malloc/free) in C++, and compares them in terms of performance and other characteristics (like memory fragmentation). Finally, he implements a couple of simple garbage collectors (reference-counting, and mark-sweep), and in the last chapter of the book also briefly mentions the important topic of sub-allocators (also known as "pools" or "arenas").

Overall, I enjoyed the book. But I do have a few points of (constructive) criticism. First of all, the book is a bit too conversational for such a technical work. It feels like a collection of blog posts, and thus also lacks in depth. For example, the section on memory management of Windows is quite disappointing. As much as I can admire the author's attempt to show his exploration process armed by various tracing and monitoring tools, much of this information is well known and has been described. Instead, I would expect a more thorough presentation of the topic.

The other problem is the C++ code. C++ code in books is a pet peeve of mine - for some reason it tends to be exceptionally bad in most of them, and this book is no exception. I won't go into examples because there are simply too many, so just a word of advice: if you intend to follow through this book actually implementing the code (always a good idea!) read about the algorithms the author describes, but write your own implementation. There's nothing good to learn from the C++ code in this book, so you might as well get some more practice on your own.
8 internautes sur 11 ont trouvé ce commentaire utile 
The whole enchillada! 20 janvier 2003
Par Un client - Publié sur Amazon.com
Format: Broché
This is probably the only book I have ever bought that actually gave a discussion on protected mode that I could follow. He does keep the discussion basic (flat model, no paging), but it got me over the hurdle.
I also liked his high-level memory managers. They were to the point and easy to understand. No fancy syntax, no cryptic pointer swizzling,... just straightforward code. What Blunden provides is a solid foundation that has a low learning threshold.
Finally, Blunden speaks to the reader in a casual manner, as if you were sipping high-octane coffee somewhere on El Camino BigNum.
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