how to discard instruction from previous signal

Thread Tools Search this Thread
Top Forums Programming how to discard instruction from previous signal
# 8  
Old 08-09-2009
Thank you matrixmadhan,

You're right. There would be potential bugs with the asynchronous signal approach. I'm thinking and trying shared memory for the problem.

Thank you all.

Best regards
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Crunch character combination and discard similar content

Hi guys ! I generated the power set of the set S={a,b,c} using crunch: crunch 1 3 abc and get the 39 possible subsets: a b c aa ab ac ba bb bc ca cb cc … (2 Replies)
Discussion started by: beca123456
2 Replies

2. Shell Programming and Scripting

Discard part of a file based on a pattern ---

I have the file: s3_T0(2) Pos "1" "2" s1_T1(2) Pos "1" "2" --- 0 0 1 0 0 1 1 1 --- 1 2 "tau0" 1 2 "h10" I want to patternmatch on --- and get only the third part i.e. 1 2 "tau0" 1 2 "h10" I wanted to start simple but even something like (5 Replies)
Discussion started by: eagle_fly
5 Replies

3. Shell Programming and Scripting

Number some lines discard others?

Hi, I'd like to do an operation on text with a format like this this line shall be numbered this line shall not be numbered this line shall also be numbered this line shall not not be numbered And I want an output like this 1 this line shall be numbered this line... (6 Replies)
Discussion started by: jeppe83
6 Replies

4. Shell Programming and Scripting

Cp r instruction

Pleas I want answer to this question? Pleas help me A system administrator suspects that there is an attack on his machine; he needs to make a backup of the files to check when they have been modified. For this purpose he uses the "cp -r" instruction to copy the root directory. What is the... (1 Reply)
Discussion started by: tamer11007
1 Replies

5. Shell Programming and Scripting

Remove previous line if next & previous lines have same 4th character.

I want to remove commands having no output. In below text file. bash-3.2$ cat abc_do_it.txt grpg10so>show trunk group all status grpg11so>show trunk group all status grpg12so>show trunk group all status GCPKNYAIGT73IMO 1440 1345 0 0 94 0 0 INSERVICE 93% 0%... (4 Replies)
Discussion started by: Raza Ali
4 Replies

6. Shell Programming and Scripting

how to find pattern and discard lines before it?

Hi all, I'd like to search a file for the first occurence of the phrase "PLASTICS THAT EXPIRE" and then discard all the lines that came before it. Output the remainder to a new file. Operating system is hp-ux. I've searched for usual awk and sed one liners but can't find a solution. Thank... (4 Replies)
Discussion started by: Scottie1954
4 Replies

7. Shell Programming and Scripting

ksh interrupt read instruction with signal

Dear shell experts, I spent last few days porting ksh script from ksh88/SunOS to ksh93/Linux. Basically, things are going well and I do not have too much troubles porting ks88 script to ksh93, but I stuck on one item. It's about sending and handling the signal. I found two similar... (8 Replies)
Discussion started by: bzk
8 Replies

8. Shell Programming and Scripting

sed discard chars after last _

Hi, I'd get fields like unix_linux_form_yyyyddmmhhmi.file.txt shell_programming_and_scripting.txt so on... and want them as below unix_linux_form shell_programming_and I could remove everything after a '.' as below echo $field | sed 's/\..*//' but how to remove... (14 Replies)
Discussion started by: dips_ag
14 Replies

9. Solaris

what is that 1 in the instruction!~ (please help fast)

Hi all, make_lofs /.cdrom/<something>/<something> 1 what does this instruction mean? Note:both the "something" are obviously different . I would like to know what that 1 means, the rest of the instruction is clear!! Thanks (6 Replies)
Discussion started by: wrapster
6 Replies

10. UNIX for Advanced & Expert Users

Case Instruction

Hi, this is my script to make a choice between 4 : clear echo " choose a profile and enter a number" echo echo " 1- oraSTT " echo echo " 2- appSTT " echo... (3 Replies)
Discussion started by: big123456
3 Replies
Login or Register to Ask a Question
emulate_branch(3)					     Library Functions Manual						 emulate_branch(3)

       emulate_branch, execute_branch - branch emulation

       #include <signal.h>

       emulate_branch(scp, branch_instruction)
       struct sigcontext *scp;
       unsigned long branch_instruction;

       unsigned long branch_instruction;

       The  function  is  passed  a signal context structure and a branch instruction.	It emulates the branch based on the register values in the
       signal context structure.  It modifies the value of the program counter in the signal context  structure  (sc_pc)  to  the  target  of  the
       branch_instruction.   The program counter must initially be pointing at the branch and the register values must be those at the time of the
       branch.	If the branch is not taken the program counter is advanced to point to the instruction after the delay slot (sc_pc += 8).

       If the branch instruction is a `branch on coprocessor 2' or `branch on coprocessor 3' instruction, calls to  execute  the  branch  in  data
       space to determine if it is taken or not.

Return Values
       The  function returns a 0 if the branch was emulated successfully.  A non-zero value indicates the value passed as a branch instruction was
       not a branch instruction.

       The function returns non-zero on taken branches and zero on non-taken branches.

       Since is only intended to be used by it does not check its parameter to see if in fact it is a branch instruction.  It is really a stop gap
       in case a coprocessor is added without the kernel fully supporting it (which is unlikely).

See Also
       cacheflush(2), sigvec(2), signal(3)

								       RISC							 emulate_branch(3)