consider if the thread routine returns any void pointer while calling pthread_join,
the thread resources are freed and the thread will be terminated when the main thread is exit ,that is my assumption whether it is true
how do we find whether the thread is alive or terminated
how do we find... (0 Replies)
Hi all!
I am working on unix systems.I am programming in c.
I have got some problems with pthread.when I use pthread_create to creat a thread it says:
(.text+0x3a): undefined reference to `pthread_create'.
same is the problm with pthread_kill.
Can anyone help me out here.
Thanks.
vij. (2 Replies)
Hello,
I run my pthread code on Linux with 4 processors. However, the speed up is only 2 times.
The code is about solving equation (G+s(i)C)z(i)=B*us(i), i=1,...,n. Here G,C are m*m matrix, B*us(i) is a m*1 vector and s(i) are n different numbers. I need to solve the equation n times to... (2 Replies)
I am so confused about the user threads and kernel threads.Suppose I created a thread using pthread create call in Linux ,whether it will be a user thread or kernel thread.If it user thread,then how its map to kernel thread.
I heard about the M:1,M:N,1:1 mapping methods.Which method linux is... (1 Reply)
Hi all,
I wrote some code in c, using pthread (I configured the linker and compiler in eclipse IDE first).
#include <pthread.h>
#include "starter.h"
#include "UI.h"
Page* MM;
Page* Disk;
PCB* all_pcb_array;
void* display_prompt(void *id){
printf("Hello111\n");
return... (1 Reply)
I have written a C code and when i compile it there are 0 warnings and 0 errors, but when i try to run apears:
./client: symbol lookup error: ./client: undefined symbol: pthread_create, version GLIBC_2.1
the part of the code where i have the pthread_creat is:
int serverConection(int... (5 Replies)
I have a while loop like so:
while (counter (file1));
how can I pass that into a pthread_create()?
I was thinking ...
while(pthread_create(&path, NULL, counter, file));
is that right? (1 Reply)
Discussion started by: l flipboi l
1 Replies
LEARN ABOUT PHP
truncate
TRUNCATE(1) User Commands TRUNCATE(1)NAME
truncate - shrink or extend the size of a file to the specified size
SYNOPSIS
truncate OPTION... FILE...
DESCRIPTION
Shrink or extend the size of each FILE to the specified size
A FILE argument that does not exist is created.
If a FILE is larger than the specified size, the extra data is lost. If a FILE is shorter, it is extended and the extended part (hole)
reads as zero bytes.
Mandatory arguments to long options are mandatory for short options too.
-c, --no-create
do not create any files
-o, --io-blocks
treat SIZE as number of IO blocks instead of bytes
-r, --reference=RFILE
base size on RFILE
-s, --size=SIZE
set or adjust the file size by SIZE bytes
--help display this help and exit
--version
output version information and exit
The SIZE argument is an integer and optional unit (example: 10K is 10*1024). Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,... (pow-
ers of 1000).
SIZE may also be prefixed by one of the following modifying characters: '+' extend by, '-' reduce by, '<' at most, '>' at least, '/' round
down to multiple of, '%' round up to multiple of.
AUTHOR
Written by Padraig Brady.
REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report truncate translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO dd(1), truncate(2), ftruncate(2)
Full documentation at: <http://www.gnu.org/software/coreutils/truncate>
or available locally via: info '(coreutils) truncate invocation'
GNU coreutils 8.28 January 2018 TRUNCATE(1)