URGENT Help required regarding the use of FORK system call Post: 8114

10 More Discussions You Might Find Interesting

1. Programming

Need urgent help with fork()

Hy! I must wrote some code with fork() command. The thing is that i have a while statement which count till 10. I must wrote a program that one child has only one parent. So one parent has only one child and one child has only one parent. Can you please help me with these code. int main()...

2. Programming

Fork() system call time?

One more question. How can i calculate the time that system needs to make fork() system call? I need to make it with times function but i really don't know how. :(

3. UNIX for Dummies Questions & Answers

fork() system call

Can anyone explain me what really happens when a system call fork() is called ? I like to know what happens internally. Thanks in Advance. - Arun

4. Programming

Help required with using system() call

Hi, I try to write a C program which lists the output of a paticular command with all the available options (a to z) for the command in the directory of execution. This program will generate the output if the option exists for the particular command else it will display some message saying...

5. UNIX for Dummies Questions & Answers

fork system call

Hi folks, I want to know how this below program works? #include <stdio.h> int main() { printf("A\n"); fork(); printf("B\n"); fork(); fork(); printf("D\n"); fork(); printf("C\n"); } This is just for example. How this type of programs where fork is used many places, how the...

6. Homework & Coursework Questions

fork system call understanding

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: i have a problem in understanding the behaviour of fork . i understood fork as to create a new process and...

7. Shell Programming and Scripting

fork system call and \n

hi, i tried the following source codes: fork1.c: main() { printf("demo of fork\n"); fork(); printf("hello"); } output: demo of fork hello hello fork2.c: main() { printf("demo of fork");

8. Programming

Problem with execution of fork system call if i use \n

hi all, i tried the following source codes: fork1.c: main() { printf("demo of fork\n"); fork(); printf("hello"); } output: demo of fork hello hello fork2.c: main()

9. UNIX for Advanced & Expert Users

Doubt with fork() system call

Hi I wrote a simple fork program to illustrate the fork() system cal. here it is #include<stdio.h> #include<sys/stat.h> #include<sys/types.h> main() { int flag; flag=fork(); if(flag==0) { printf("Child \n"); printf("Process id= %d\n",getpid()); ...

10. Shell Programming and Scripting

Help: how to call fork() in shell script? New to linux

Hi, I'm writing a shell script where I want to call fork(). However I wrote like this "var=fork()" in c style and got this error: "syntax error near unexpected token `(' " How could I call fork() in shell script? Thanks in advance. Duplicate Post - Continue Here - Please Do Not Cross Post...

LEARN ABOUT OSF1

get_info

get_info(9r)															      get_info(9r)

NAME

       get_info - General: Returns system-specific information

SYNOPSIS

       #include <devdriver.h>

       u_int get_info(
	       struct item_list *item_list );

ARGUMENTS

       Specifies a linked list of information requests.

DESCRIPTION

       The  get_info  routine  returns	system-specific  data assigned to the hardware platform that the driver operates on. For example, a device
       driver might request system-specific information for the following Alpha hardware platforms: DEC 3000 Model 300 AXP Workstation,  DEC  3000
       Model 500 AXP Workstation, and DEC 4000 Model 610 AXP System.

       The  get_info  routine checks the function code that you pass in the function member of the item_list data structure. If the hardware plat-
       form that the driver operates on supports the system item associated with this function code, get_info returns the system-specific data for
       the  system  item  in  the output_data member of the item_list structure. For example, get_info returns the TURBOchannel clock speed in the
       output_data member of the item_list structure if you specify the constant GET_TC_SPEED in the function member of the item_list structure.

       The get_info routine then performs the identical checks for the rest of the item_list structures in the linked list.

NOTES

       The get_info routine is a generic interface that maps to a hardware platform-specific interface that actually returns the assigned CPU-spe-
       cific data for the specified CPU. Using this routine to obtain CPU-specific information makes the driver more portable across different CPU
       architectures and different CPU types within the same architecture.

RETURN VALUES

       The return value from the get_info routine depends on the following issues: The hardware platform supports get_info

	      In this case, get_info returns the value TRUE.  The hardware platform does not support get_info

	      In this case, get_info returns the value NOT_SUPPORTED.

       If get_info returns the value TRUE, it returns one of the following values in the rtn_status member of the item_list data structure:  Indi-
       cates  that  the  hardware  platform that the driver currently operates on supports the requested system item.  Indicates that the hardware
       platform that the driver operates on does not support the requested system item.

SEE ALSO

       Routines: do_config(9r), get_config(9r)

       Data Structures: item_list(9s)

																      get_info(9r)