oss bss

memory space divided into several parts: code snippet, data segment, stack, heap (collect and organize) 1. The function code is stored in the code snippet. If the declared class is never used, it is optimized at compile time, and its member functions do not occupy the code segment space.global variable or static variable, placed in the data segment,Local variables are placed in the stack,The objects created with new are placed in the heap,Memory is divided into 4 segments, stack area, heap area

Advanced Linux sound architecture (ALSA) Study Notes Reprinted please indicate the source and the author contact: http://blog.csdn.net/absurd Contact information: Li xianjing Last Updated: 2006-12-19 ALSA is not a new thing that has just emerged recently. It has actually been developing for many years. However, it has not become a proper replacement for OSS names until it is in kernel 2.6. ALSA provides not only a few sound card drivers, but a

commands, and as a programming language, it defines variables and parameters and provides many control structures in high-level languages, including loops and branches.3.Linux runs at the row prompt[[Email protected] desktop]$ (line prompt)Meaning:Kiosk: User@: DelimiterFoundaton0: Host short nameDesktop: The location of your system$: User identity, $ for ordinary users (grass people), #为超级用户 (the Son of Heaven).4. Virtual Machine Management Commands:Rht-vmctl Start Desktop/server OpenRht-vmctl

/* Target address to relocate to for decompression */Addl $ z_extract_offset, % EBX/* Add to offset */# In this way, the temporary memory address of the kernel is determined. /* Set up the stack */Leal boot_stack_end (% EBX), % ESP# Set the stack. Note that this stack is far away from us. /* Zero eflags */# clear sign register eflagsPushl $0Popfl /** Copy the compressed kernel to the end of our Buffer* Where decompression in place becomes safe.*/# This code can be said to be the essence of this

The declaration of BRK () and sbrk () is as follows: #include Both functions are used to change the position of the "program break" (Program interruption point). For details about this position, refer: As mentioned in man: Reference BRK () and sbrk () change the location of the program break, which defines the end of the process's data segment (I. E ., the program break is the first location after the end of the uninitialized data segment ). BRK () and sbrk () change the "program brek"

.*)* (. Rela. GNU. linkonce. sb2 .*)}. Rel. BSS:{* (. Rel. BSS)* (. Rel. BSS .*)* (. Rel. GNU. linkonce. B .*)}. Rela. BSS:{* (. Rela. BSS)* (. Rela. BSS .*)* (. Rela. GNU. linkonce. B .*)}. Rel. PLT: {* (. Rel. PLT )}. Rela. PLT

To join this plan: 1,Method 1: JoinQqGROUP:93684322. 2,Method 2: JoinCsdnGROUP:DS plan.1.1 example of a variable storage domain 1.1.1 Pang123hui first provides an example of the learning code circulating on the Internet: Int A = 0; // global Zone Void main () { Int B; // Stack Char s [] = "ABC"; // s in the stack, ABC in the text Constant Area Char * P1, * P2; // Stack Char * P3 = "123456"; // 123456 in the constant zone, and P3 in the stack Static int C = 0; // global Zone P1 = (char *) malloc

adjacent in the memory. This is a simple common sense, but it is sometimes useful. If a global variable is damaged, you can check the access code of the variables before and after it to check whether there is a possibility of cross-border access. Among the executable files in ELF format, the global memory includes three types: BSS, data, and rodata. The formats of other executable files are similar. By understanding the characteristics of these three

Generally, an executable binary Program (more specifically, it is a process unit in the Linux operating system and is called a task in UC/oⅱ) there are three parts in the storage (not transferred to the memory for running), namely the code segment (text), data segment (data), and BSS segment. These three parts together constitute the file of the executable program Executable code structure in C Language Name Content Code s

A program is essentially composed of BSS, data, and text segments three. You can see that an executable program is divided into sections of code, data areas, and uninitialized data areas when it is stored (not being transferred into memory). BSS segment ( uninitialized data area ): In a schema with segment memory management, BSS segments (

global variables in the executable file, in other words, variables and global variables that are statically allocated by the program.3) BSS segment: The BSS segment contains uninitialized global variables in the program, all zeros in the in-memory BSS segment. A BSS segment (BSS