Visit The New, Modern Unix Linux Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #488
Difficulty: Medium
Some languages are interpreted, not compiled, and the source code is contained in a file usually referred to as a text-based assembly unit.
True or False?
Linux & Unix Commands - Search Man Pages

pthread_equal(3) [linux man page]

PTHREAD_EQUAL(3)					     Linux Programmer's Manual						  PTHREAD_EQUAL(3)

NAME
pthread_equal - compare thread IDs SYNOPSIS
#include <pthread.h> int pthread_equal(pthread_t t1, pthread_t t2); Compile and link with -pthread. DESCRIPTION
The pthread_equal() function compares two thread identifiers. RETURN VALUE
If the two thread IDs are equal, pthread_equal() returns a nonzero value; otherwise, it returns 0. ERRORS
This function always succeeds. CONFORMING TO
POSIX.1-2001. NOTES
The pthread_equal() function is necessary because thread IDs should be considered opaque: there is no portable way for applications to directly compare two pthread_t values. SEE ALSO
pthread_create(3), pthread_self(3), pthreads(7) COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. Linux 2009-03-30 PTHREAD_EQUAL(3)

Check Out this Related Man Page

PTHREAD_EQUAL(3)					     Linux Programmer's Manual						  PTHREAD_EQUAL(3)

NAME
pthread_equal - compare thread IDs SYNOPSIS
#include <pthread.h> int pthread_equal(pthread_t t1, pthread_t t2); Compile and link with -pthread. DESCRIPTION
The pthread_equal() function compares two thread identifiers. RETURN VALUE
If the two thread IDs are equal, pthread_equal() returns a nonzero value; otherwise, it returns 0. ERRORS
This function always succeeds. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +----------------+---------------+---------+ |Interface | Attribute | Value | +----------------+---------------+---------+ |pthread_equal() | Thread safety | MT-Safe | +----------------+---------------+---------+ CONFORMING TO
POSIX.1-2001, POSIX.1-2008. NOTES
The pthread_equal() function is necessary because thread IDs should be considered opaque: there is no portable way for applications to directly compare two pthread_t values. SEE ALSO
pthread_create(3), pthread_self(3), pthreads(7) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. Linux 2015-08-08 PTHREAD_EQUAL(3)

11 More Discussions You Might Find Interesting

1. Programming

hash tables, pthread_key_create

I want to store a bunch of pthread_t types in a hash table, but since pthread_t is not an integer value, I cannot hash it. I was hoping to store a unique nonzero as key 0 for each thread with thread-specific data ala pthread_key_create/pthread_setspecific, but but as it turns out only the first... (2 Replies)
Discussion started by: Corona688
2 Replies

2. Programming

Problem with pthreads

hi i have a code: I found that after exiting from child thread memory isn't freed. I commented everything which is "some actions" here, so thread's function contains only two lines. But it doesn't help. What do I do wrong? Thanks a lot (3 Replies)
Discussion started by: sery0ga
3 Replies

3. Red Hat

Points to compare Linux distros

I 've a question regarding which points should be considered to compare 2 different linux distros say RedHat & Ubuntu. for a production environment non-db applications ... any help will be appreciated .. (1 Reply)
Discussion started by: fugitive
1 Replies

4. Programming

pthread_create

The prototype for pthread_create function is like this:- int pthread_create(pthread_t *thread,pthread_attr_t *attr,void *(*start routine),void *arg); Q.1 .Why the return type of the start_routine must be void*?? Q.2. Why should we pass arg by converting into void * only ?? Thank You (3 Replies)
Discussion started by: sunil_abhay
3 Replies

5. UNIX and Linux Applications

urgent help in Portable Applications

Hello Im stuck with a project on converting existing applications in to their portable versions, What i mean is that i want an application to run on a Linux OS without the need of actually installing the application on that machine. My preffered OS is fedora as it is used on most machines in my... (1 Reply)
Discussion started by: engineeringme
1 Replies

6. UNIX for Dummies Questions & Answers

Difference between handle to the thread HANDLE and thread identifier pthread_t

This question might be silly but its confusing me a bit: What is the difference between handle to the thread HANDLE and thread identifier pthread_t? ---------- Post updated at 01:52 PM ---------- Previous update was at 01:48 PM ---------- Sorry I saw details and HANDLE is in windows and... (0 Replies)
Discussion started by: rupeshkp728
0 Replies

7. HP-UX

converting void pointer to pthread_t on HPUX Itanium

i am trying to convert void pointer to pthread_t on hpux-itanium 64 bit which fails as below "src/file.cpp", line 88: error #2171: invalid type conversion pthread_t tid = reinterpret_cast<pthread_t>(m_threadId); 1 error detected in the compilation of "src/file.cpp" ... (0 Replies)
Discussion started by: skyineyes
0 Replies

8. Programming

Multiple instances of pthread

Suppose I declare pthread_t clear_thread; and then pthread_create(&clear_thread, &detach, clear_message, this); the thread is supposed to go away, perform the service it is intended to procide, and then kill itself. A little while later, I require this service again, so I say ... (2 Replies)
Discussion started by: clerew
2 Replies

9. Shell Programming and Scripting

Man pages for Pthreads

"how to see the man pages related to pthreads". while executing the command man pthread_t . im getting the following error!!!!! No manual entry for pthread. (3 Replies)
Discussion started by: Muthukumar U
3 Replies

10. Solaris

Need command

I have two files File1, File2. File1 has whole list of IDs and File2 has a limited IDs. i need to compare these two files and take the IDs which are not present in File2 but present in File1. can someone tell me a command. (3 Replies)
Discussion started by: JSKOBS
3 Replies

11. Shell Programming and Scripting

How to compare two files ?

Hi am just trying to compare two files data... datafile1 is standard data, datafile 2 is varying st_data.txt long lat 68.14 23.48 67.56 22.99 67.08 22.49 66.79 22.25 66.68 22.18 66.07 21.89 65.67 21.65 65.6 21.56un_std.txt long lat 75.5 10.05... (7 Replies)
Discussion started by: Akshay Hegde
7 Replies

Featured Tech Videos