In Tru64 Unix, the 'errno' variable is not thread safe.
Could anybody help me about how to make it thread safe or how to check 'errno' in a Multithreaded program ????
The Programming process is like this.
There are some definite number of threads having their own task.
There is one... (2 Replies)
Hello,
I need to make a lib with pthread, when I run my make file all is good. But when I run my test program, I test errno in the begining and is already set to 251. Is it normal ??? What can I modify in my Makefile to have errno set to 0 ???
Thanks
$make
gcc -D_REENTRANT -shared -fpic... (3 Replies)
How should I use errno in a c program and what info does it have .
I am working with directories and files.
So can any one tell me How to access errno?I am using the stat() function on \etc directory and I am alble to access only the half of the directories.I am not able to access other half and... (6 Replies)
Hey, Can I assume that for certain function calls, errno can never be set to a certain value.
More specifically, can I assume that for if the stat function call fails, the errno can never be or "No space left on device."
I am assuming that a read function cannot fail because of no space... (5 Replies)
Dear all,
I use perror in order to print an error message to the standar error. For example
if a C program is called without its two necessary command line parameters
then :
if (argc != 3)
{
perror("use: ./myProgram <source file> <target file>\n");
return 1;
}
Now the... (2 Replies)
I have following problem with this code..
First time trough the main loop.....
perror gives ....blocked signal:success(all other times gives illlegal seek)
Should every time trought the main loop be success??
And the perror otside of main loop...didn't change mask:success
That line of code... (2 Replies)
i am trying to use the perror function:
something like
perror("WRONG!!!");
but when i see the message in the terminal, it comes out like
WRONG!!! : Success
How can i change it to
WRONG!!! : WRONG!!!
well i just want to have my own custom message for the part after the colon... (1 Reply)
from mmap manpage I get it's errors discription:
The addresses specified by the range [off, off + len) are invalid
for filedes.
How could I trigger a ENXIO ? anyone can input the code?
Lei (3 Replies)
Dear all,
CentOS 6
After executing "yum update -y" command I am facing this error. Please help me out.
thanks in advance. Full error & error code is given as follow:
... (7 Replies)
Hi, I need to look at a recent copy of /usr/include/errno.h from AIX 7.2 to check some symbols. In particular, I'm curious if it defines EOWNERDEAD and ENOTRECOVERABLE. Can someone who has access to 7.2 please check for me? Thanks! (1 Reply)
Discussion started by: topcat
1 Replies
LEARN ABOUT OSF1
perror
perror(3) Library Functions Manual perror(3)NAME
perror - Writes a message explaining the current setting of errno
LIBRARY
Standard C Library (libc.a, libc.so)
SYNOPSIS
#include <stdio.h>
void perror(
const char *string);
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
perror(): ISO C, POSIX.1, XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information about industry standards and associated tags.
PARAMETERS
Points to a string containing the name of the program that caused the error.
DESCRIPTION
The perror() function writes a message on the standard error stream that describes the current setting of the external variable errno. The
error message includes the string pointed to by the string parameter, followed by a : (colon), a blank, the system message string, and a
newline character. The string parameter string should point to the name of the program that caused the error.
To get the system error message string for use by a program, as opposed to displaying it on standard error, use the strerror() function.
For more information, see strerror(3).
RELATED INFORMATION
Routines: printf(3), strerror(3)
Standards: standards(5) delim off
perror(3)