data structures dynamic memory allocation
Dynamic memory allocation
Ngày tải lên :
25/04/2013, 08:07
... minimize
overhead
20
Dynamic memory allocation
•
Memory allocated during runtime
•
Request to map memory using mmap() function (in
<sys/mman.h>)
•
Virtual memory can be returned ... iterate through memory,
doing the same as pointers are encountered
•
Can accomplish in one pass
30
Summary
Topics covered:
•
Dynamic memory allocation
•
the heap
•
designing a memory allocator ... heap,
mapping memory as needed
•
Dynamic memory allocators divide heap into blocks
6
Design choices
Data structure to track blocks
•
•
Algorithm for positioning a new allocation
•
Splitting/joining...
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Dynamic Memory
Ngày tải lên :
29/09/2013, 16:20
... another:
if (data_ count == data_ size) {
// we're full up, so add a bucket
data_ size += BUCKET_SIZE;
data = realloc (data, data_ size * sizeof(int));
}
// now store the data
* (data+ data_count) ... allocate initial area
// now add a bunch of data
for(i = 0; i < 23; i++) {
add _data( i);
}
return 0;
}
void add _data( int new _data)
{
// if data_ count == data_ size, the area is full and
// needs ... main(void)
{
void add _data( int new _data) ; // function prototype
int i;
// first, initialize the data area:
data_ count = 0;
data_ size = INITIAL_SIZE;
data = malloc (data_ size * sizeof(int)); //...
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Tài liệu DATA STRUCTURES AND ALGORITHMS USING C# pdf
Ngày tải lên :
22/12/2013, 10:16
... the data structures we examine
in this book.
While this use of generic programming can be quite useful, C# provides a
library of generic data structures already ready to use. These data structures
are ... CLASS
C
OLLECTIONS
D
EFINED
A collection is a structured data type that stores data and provides operations
for adding data to the collection, removing data from the collection, updating
data in the collection, as well ... C# data structures. Finally, we think you’ll enjoy this section, as well
as the other implementation sections in this book, because it’s really a lot of
fun to reimplement the existing data structures...
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Tài liệu Data Structures & Algorithms pptx
Ngày tải lên :
20/01/2014, 03:20
... What is Data Structures?
– A data structure is defined by
z (1) the logical arrangement of data elements,
combined with
z (2) the set of operations we need to access the
elements.
1
Data Structures ... the librarian
the logical arrangement of data elements,
combined with
the set of operations we need to access the
elements.
6
Basic Data Structures
z Structures include
– linked lists
– Stack, ... ARRAYS
1. An array is a data structure
2. used to process multiple elements with the same data
type when a number of such elements are known.
3. An array is a composite data structure; that means...
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Tài liệu Cấu trúc dữ liệu (Data Structures) - Chương 1 pptx
Ngày tải lên :
27/01/2014, 14:20
... Hoàng Kiếm,
Giáo trình cấu trúc dữ liệu
, ĐH KHTN, 1996.
3. Niclaus Wirth, bản dịch
Algorithms +Data structures
, NXB Thống Kê, 1981.
4. Đỗ Xuân Lôi,
Cấu trúc dữ liệu và giải thuật
, NXB Khoa ... khảo
Tài liệu tham khảo
Tài liệu tham khảo
Tài liệu tham khảo
21/02/14
LOGO
Cấu Trúc Dữ Liệu
(Data Structures)
Phan Mạnh Thường
02/21/14
www.lhu.edu.vn
Chương 1 Giới thiệu tổng quan
Một CTDL ... thực tế rất đa dạng
Trừu tượng hóa dữ liệu giúp ánh xạ một nhóm
byte thành một kiểu dữ liệu (Data Type)
Kiểu dữ liệu T được xác định bởi một bộ <V,O>
trong đó :
V (Values): tập các...
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Tài liệu Fundamentals of OOP and Data Structures in Java Richard Wiene ppt
Ngày tải lên :
14/02/2014, 04:20
... OOP and Data Structures in Java
Richard Wiener
University of Colorado, Colorado Springs
Lewis J. Pinson
University of Colorado, Colorado Springs
Page i
Fundamentals of OOP and Data Structures ... OOP and Data Structures in Java
Fundamentals of OOP and Data Structures in Java is a text for an introductory course on classical data structures. Part
One of the book presents the basic principles ...
programming, and classical data structures.
The software development principles associated with OOP provide a strong framework for presenting and implementing
classical data structures. We adhere...
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Tài liệu Dynamic Resource Allocation for Database Servers Running on Virtual Storage pptx
Ngày tải lên :
19/02/2014, 12:20
... has focused on dynamic alloca-
tion and/or controlling either memory allocation or disk
bandwidth partitioning among competing workloads.
Dynamic Memory Partitioning: Dynamic memory
allocation algorithms ... the different memory regions. Fi-
nally, recently, IBM DB2 added the self-tuning memory
manager (STMM) to size different memory regions [26].
Disk Bandwidth Partitioning: Dynamic allocation
of ... Conclusions
Resource allocation to applications on the fly is increas-
ingly desirable in shared data centers with server consol-
idation. While many techniques for enforcing a known
allocation exist, dynamically...
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Tài liệu Data Structures on Event Graphs ppt
Ngày tải lên :
19/02/2014, 18:20
... Comput.,
30(3):906–922, 2000.
[10] L. K. Konneker and Y. L. Varol. A note on heuristics for dynamic organization
of data structures. Inform. Process. Lett., 12(5):213–216, 1981.
[11] K. Lam, M. Y. Leung, ... 29(5):283–292, 1993.
[8] S. Kapoor and E. M. Reingold. Stochastic rearrangement rules for self-organizing
data structures. Algorithmica, 6(2):278–291, 1991.
[9] A. R. Karlin, S. J. Phillips, and P. Raghavan. ... that produces any
7
References
[1] P. Chassaing. Optimality of move-to-front for self-organizing data structures with
locality of references. Ann. Appl. Probab., 3(4):1219–1240, 1993.
[2] B. Chazelle....
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FE3 Data structures Algorithm pdf
Ngày tải lên :
05/03/2014, 20:20
... or
hiding data on the level of data types is called data encapsulation.
Figure 1-2-7 Abstract data type
Program
(Operations +
data structures)
<Abstract data structure>
Data
Result
... Classification of data structures
Data structure
Basic data structure
Problem-oriented
data structure
Created using the
basic data structure
Basic data type
Structure type
Abstract data type
Integer ... In storing data in a main memory unit, the data
type (data type, size, etc.) must be declared. The most basic data structure unit used to declare the data
type is called a basic data structure....
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Data Structures and Algorithms - Chapter 3 -STACK ppt
Ngày tải lên :
06/03/2014, 17:20
... (cont.)
<ErrorCode> Push (val DataIn <DataType>)
Pushes new data into the stack.
Pre DataIn contains data to be pushed.
Post If stack is not full, DataIn has been pushed in;
otherwise, ... Algorithm (cont.)
<ErrorCode> Push (val DataIn <DataType>)
// For Linked Stack
1. Allocate pNew
2. If (allocation was successful)
1. pNew-> ;data = DataIn
2. pNew->link = top
3. top = ...
calling List’s operations.
Ex.:
<ErrorCode> Push (val DataIn <DataType>)
// Call List::InsertHead(DataIn)
or
// Call List::Insert(DataIn, 0) // 0: insert to the 1
st
position
end Push
<ErrorCode>...
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Data Structures and Algorithms - Chapter 3 -Stack Applications pdf
Ngày tải lên :
06/03/2014, 17:20
... exists.
•
30
What kind of data, and
which data need to be
push into the stack?
Goal Seeking (cont.)
Tasks depend on each goal seeking problem:
Determine what kind of data included in graph ... or all solutions, if exists.
Two of 92 solutions of Eight Queens Problem
36
What kind of data, and which data need to be push into the stack?
Usage of an ADT’s Object
In some compilers,
- When ... any solution or all solutions, if exists.
32
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
What kind of data, and which data need to be push into the stack?
Priority of operators
Priority of the operators associated...
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Data Structures and Algorithms - Chapter 9: Hashing pot
Ngày tải lên :
06/03/2014, 17:20
... 560010 → 66
Spreading the data more evenly across the address space
32
01 December 2008
Cao Hoang Tru
CSE Faculty - HCMUT
Collision Resolution
• Secondary clustering: data become grouped
along ... Faculty - HCMUT
Basic Concepts
• Home address: address produced by a hash
function.
• Prime area: memory that contains all the home
addresses.
19
01 December 2008
Cao Hoang Tru
CSE Faculty - HCMUT
Digit...
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Data Structures and Algorithms – C++ Implementation ppt
Ngày tải lên :
06/03/2014, 17:20
... <metadata>,
val pPre <node pointer>,
val dataIn <dataType>)
Inserts data into a new node in the linked list
Pre list is metadata structure to a valid list
pPre
is pointer data s ... pointer data s logical predecessor
dataIn contains data to be inserted
Post data have been inserted in sequence
Return true if successful, false if memory overflow
Insert Node
Allocate memory ... NULL;
}
Node(
ItemType
data) {
Slide 14Faculty of Computer Science and Engineering – HCMUT
Node(
ItemType
data) {
this-> ;data = data;
this->next = NULL;
}
ItemType data;
Node<ItemType>...
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