... work is licensed under the Creative Commons Attribution- Noncommercial- No Derivative Works 3.0 License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/ ... include the name and contact information for the translator. The C source code presented in this document is hereby granted to the public domain, and is completely free of any license restriction. Educators ... the memory is cleared to zero when using calloc()) The pointer returned by calloc() can be used with realloc() and free( ) just as if you had used malloc(). The drawback to using calloc() is that...
Ngày tải lên: 16/02/2014, 08:20
... object files and linking. For example, consider this code: % gcc -pg -c -o calculator.o calculator .c % gcc -pg -c -o stack.o stack .c % gcc -pg -c -o number.o number .c % gcc -pg calculator.o stack.o ... -lccmalloc -ldl to your link command, for instance. % gcc -g -Wall -pedantic malloc-use.o -o ccmalloc-use -lccmalloc –ldl Execute the program to produce a report. For example, running our malloc-use ... our calculator program, which is produced by executing gprof ./calculator: Flat profile: Each sample counts as 0.01 seconds. % cumulative self self total time seconds seconds calls ms/call ms/call...
Ngày tải lên: 21/01/2014, 07:20
Tài liệu Advanced Linux Programming: C Table of Signals ppt
... kill command. SIGCHLD Linux sends a process this signal when a child process exits. See Section 3.4.4,“Cleaning Up Children Asynchronously,” in Chapter 3,“Processes.” SIGXCPU Linux sends a process ... pointer” can cause a SIGSEGV. SIGPIPE The program has attempted to access a broken data stream, such as a socket connection that has been closed by the other party. SIGALRM The alarm system call schedules ... illegal instruction.This could indicate that the program’s stack is corrupted. SIGABRT The abort function causes the process to receive this signal. SIGFPE The process has executed an invalid floating-point...
Ngày tải lên: 21/01/2014, 07:20
Tài liệu Advanced Linux Programming: 1-Advanced UNIX Programming with Linux pdf
... Makefile contains: reciprocal: main.o reciprocal.o g++ $(CFLAGS) -o reciprocal main.o reciprocal.o main.o: main .c reciprocal.hpp gcc $(CFLAGS) -c main .c reciprocal.o: reciprocal.cpp reciprocal.hpp g++ ... (“The reciprocal of %d is %g\n”, i, reciprocal (i)); return 0; } Listing 1.2 (reciprocal.cpp) C+ + source file—reciprocal.cpp #include <cassert> #include “reciprocal.hpp” double reciprocal (int ... source code into machine-readable object code that can actually run.The compilers of choice on Linux systems are all part of the GNU Compiler Collection, usually known as GCC. 3 GCC also include compilers...
Ngày tải lên: 21/01/2014, 07:20
Tài liệu Advanced Linux Programming: 3-Processes pdf
... SIGCHLD by calling clean_up_child_process. */ struct sigaction sigchld_action; memset (&sigchld_action, 0, sizeof (sigchld_action)); sigchld_action.sa_handler = &clean_up_child_process; sigaction ... exit code is displayed after each invocation. In the first case, ls executes correctly and returns the exit code zero. In the second case, ls encounters an error (because the filename specified ... exited, and you can choose whether you care about which child process terminated. 3.4.2 The wait System Calls The simplest such function is called simply wait. It blocks the calling process until...
Ngày tải lên: 26/01/2014, 07:20
Tài liệu Advanced Linux Programming: 7-The /proc File System pdf
... program includes the function get_cpu_clock_speed that reads from /proc/cpuinfo into memory and extracts the first CPU’s clock speed. Listing 7.1 (clock-speed .c) Extract CPU Clock Speed from /proc/cpuinfo #include ... N491 Type: Direct-Access ANSI SCSI revision: 02 This computer contains one single-channel SCSI controller (designated “scsi0”), to which two Quantum disk drives are connected, with SCSI device IDs 0 ... /proc file system includes information about devices connected to both IDE controllers and SCSI controllers (if the system includes them). On typical systems, the /proc/ide subdirectory may contain...
Ngày tải lên: 26/01/2014, 07:20
Tài liệu Advanced PHP Programming- P5 pdf
... files: > mv Advanced_ PHP Advanced_ PHP.old > cvs -d /var/cvs checkout Advanced_ PHP cvs checkout: Updating Advanced_ PHP cvs checkout: Updating Advanced_ PHP/examples U Advanced_ PHP/examples/chapter-10/1.php U ... compiler caches for PHP: n The Zend Accelerator—A commercial, closed-source, for-cost compiler cache produced by Zend Industries n The ionCube Accelerator—A commercial, closed-source, but free compiler cache ... not much better. Here is the same code with an improved naming scheme: $cc_number = $_GET[‘cc_number’]; $cc_is_valid = CreditCard_IsValidCCNumber($cc_number); if($cc_is_valid) { // … } This code...
Ngày tải lên: 26/01/2014, 09:20
Tài liệu Advanced PHP Programming- P8 pdf
... original Netscape cookie specification (http://wp.netscape.com/newsref/std/cookie_spec.html). No programmer’s library is complete without a copy of Bruce Schneier’s Applied Cryptography, which is widely ... session stickiness can enhance cache locality, too many applications rely on session stickiness to function correctly, which is bad design. Relying on session stickiness exposes an application to ... the cache directory. Constantly scanning that directory can cause serious con- tention. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. 331 Maintaining Authentication:...
Ngày tải lên: 26/01/2014, 09:20
Tài liệu Advanced PHP Programming- P9 pdf
... Compared The choice of which RPC protocol to implement—SOAP or XML-RPC—is often dictated by circumstance. If you are implementing a service that needs to interact with existing clients or servers, your choice ... using centralized caches is to have cache reads be completely independent of any central service and to have writes coordinate in a distributed fashion to invalidate all cache copies across the cluster. Please ... the Cache_File module developed in Chapter 10,“Data Component Caching,” you can extend this caching architecture seamlessly by creating an exportable directory /shares/ cache/www.foo.com on your NFS server...
Ngày tải lên: 26/01/2014, 09:20
Tài liệu Practical C Programming Third Edition pdf
... generic cc compiler or the Free Software Foundation’s gcc compiler. For MS-DOS/Windows users, instructions are included for Borland C+ +, Turbo C+ +, and Microsoft Visual C+ +. (These compilers compile ... preprocessor from becoming a problem are described. Chapter 11, Bit Operations, discusses the logical C operators that work on bits. Chapter 12, Advanced Types, explains structures and other advanced ... and continue. The switch statement is discussed in detail. Chapter 9, Variable Scope and Functions, introduces local variables, functions, and parameters. Chapter 10, C Preprocessor, describes...
Ngày tải lên: 14/02/2014, 20:20
Beginning C# 3.0: An Introduction to Object Oriented Programming pdf
... development company (Ecosoft, Inc.) in 1977. The company ’ s main product was a statistics package (Microstat) that he wanted to rewrite in a new language called C. Lacking a suitable C compiler, ... C# 3.0 : an introduction to object oriented programming / Jack Purdum. p. cm. Includes index. ISBN 978-0-470-26129-3 (paper/website) 1. Object-oriented programming (Computer science) 2. C# ... Objects 195 Collections 198 ArrayList Objects 200 Summary 203 Exercises 203 Part III: Writing Your Own Classes 205 Chapter 9: Designing Classes 207 Class Design 208 Adding a Class to a Project...
Ngày tải lên: 22/03/2014, 16:20
More Advanced Linear Programming Concepts and Methods pdf
... Projects introduce permission constraints which allow one activity to proceed only if another is adopted. Mutually Exclusive Projects introduce constraints in which the total number of activities ... Gen Inc’. The solution shows that only 70% of the Hydro scheme is to be adopted. Such a scaled down scheme may not be acceptable. To ensure that projects are either accepted or rejected in ... 16 Advanced LP Applications: Summary Linear programming can be used to solve selection problems from amongst competing investment alternatives in the face of complex constraints. These constraints...
Ngày tải lên: 23/03/2014, 04:20
Joe Celko s SQL for Smarties - Advanced SQL Programming P10 pdf
... emp_name CHAR(30) NOT NULL, child1 CHAR(30), birthday1 DATE, sex1 CHAR(1), child2 CHAR(30), birthday2 DATE, sex2 CHAR(1), child3 CHAR(30), birthday3 DATE, sex3 CHAR(1), child4 CHAR(30), ... professor_name CHAR(25) NOT NULL, PRIMARY KEY (course_name, section_id)); CREATE TABLE Enrollment (student_name CHAR (25) NOT NULL, course_name CHAR(7) NOT NULL, section_id CHAR(1) NOT NULL, grade CHAR(1) ... cast as integers in one nonprocedural step. The trick is to be sure that the left-hand comma of the bracketing pair is the closest one to the second comma. The place column tells you the relative...
Ngày tải lên: 06/07/2014, 09:20
Joe Celko s SQL for Smarties - Advanced SQL Programming P31 pdf
Ngày tải lên: 06/07/2014, 09:20
Joe Celko s SQL for Smarties - Advanced SQL Programming P33 pdf
Ngày tải lên: 06/07/2014, 09:20
Joe Celko s SQL for Smarties - Advanced SQL Programming P42 pdf
Ngày tải lên: 06/07/2014, 09:20
Joe Celko s SQL for Smarties - Advanced SQL Programming P45 pdf
Ngày tải lên: 06/07/2014, 09:20