pthread functions "_np" suffix

Posted by osgx on Stack Overflow See other posts from Stack Overflow or by osgx
Published on 2010-02-10T16:41:08Z Indexed on 2010/04/02 23:23 UTC
Read the original article Hit count: 235

Filed under:

pthreads

|

glibc

|

posix

What does "_np" suffix mean here:

pthread_mutex_timedlock_np

or in macros

PTHREAD_MUTEX_TIMED_NP

Upd:

From glibc2.2

enum 
{ 
  PTHREAD_MUTEX_TIMED_NP, 
  PTHREAD_MUTEX_RECURSIVE_NP, 
  PTHREAD_MUTEX_ERRORCHECK_NP, 
  PTHREAD_MUTEX_ADAPTIVE_NP 
#ifdef __USE_UNIX98 
  , 
  PTHREAD_MUTEX_NORMAL = PTHREAD_MUTEX_TIMED_NP, 
  PTHREAD_MUTEX_RECURSIVE = PTHREAD_MUTEX_RECURSIVE_NP, 
  PTHREAD_MUTEX_ERRORCHECK = PTHREAD_MUTEX_ERRORCHECK_NP, 
  PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL 
#endif 
#ifdef __USE_GNU 
  /* For compatibility. */ 
  , PTHREAD_MUTEX_FAST_NP = PTHREAD_MUTEX_ADAPTIVE_NP 
#endif 
};

Does defining __USE_UNIX98 change portability of _NP functions/macro?

© Stack Overflow or respective owner

Related posts about pthreads

gcc: Do I need -D_REENTRANT with pthreads?

as seen on Stack Overflow - Search for 'Stack Overflow'
On Linux (kernel 2.6.5) our build system calls gcc with -D_REENTRANT. Is this still required when using pthreads? How is it related to gcc -pthread option? I understand that I should use -pthread with pthreads, do I still need -D_REENTRANT? On a side note, is there any difference that you know… >>> More
pthreads: reader/writer locks, upgrading read lock to write lock

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm using read/write locks on Linux and I've found that trying to upgrade a read locked object to a write lock deadlocks. i.e. // acquire the read lock in thread 1. pthread_rwlock_rdlock( &lock ); // make a decision to upgrade the lock in threads 1. pthread_rwlock_wrlock( &lock ); // this… >>> More
SUA + Visual Studio + pthreads

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I cannot compile this code under SUA: #include <unistd.h> #include <stdio.h> #include <stdlib.h> #include <pthread.h> void * thread_function(void *arg) { printf("thread_function started. Arg was %s\n", (char *)arg); // pause for 3 seconds sleep(3); … >>> More
Creating an independent draw thread using pthreads (C++)

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all, I'm working on a graphical application which looks something like this: while (Simulator.simulating) { Simulator.update(); InputManager.processInput(); VideoManager.draw(); } I do this several times a second, and in the vast majority of cases my computation will be taking up… >>> More
posix pthreads in c

as seen on Stack Overflow - Search for 'Stack Overflow'
Iam new to c programming and needs some help. long *taskids[NUM_THREADS]; for(t=0; t<NUM_THREADS; t++) { taskids[t] = (long *) malloc(sizeof(long)); *taskids[t] = t; printf("Creating thread %ld\n", t); rc = pthread_create(&threads[t], NULL, PrintHello, (void *) taskids[t]); ... } This… >>> More

Related posts about glibc

Yum Update Failing mod_ssl and glibc_devel

as seen on Server Fault - Search for 'Server Fault'
Any ideas on how to get this to not fail? # yum update Freeing read locks for locker 0x82: 4189/140342084876032 Freeing read locks for locker 0x84: 4189/140342084876032 Freeing read locks for locker 0x85: 4189/140342084876032 Freeing read locks for locker 0x86: 4189/140342084876032 Freeing read locks… >>> More
How to build glibc 2.11.2 on RHEL5?

as seen on Super User - Search for 'Super User'
Using gcc-4.4.4 or 4.5.0, I'm unable to make glibc-2.11.2 on RHEL 5.5: .././scripts/mkinstalldirs /dev/shm/glibc-2.11.2-build/sunrpc/rpcsvc CPP='gcc -B/home/klaw/share/rhel5/ -E -x c-header' /dev/shm/glibc-2.11.2-build/elf/ld-linux-x86-64.so.2 --library-path /dev/shm/glibc-2.11.2-build:/dev/shm/glibc-2… >>> More
Install Glibc2 using Yum

as seen on Server Fault - Search for 'Server Fault'
I'm trying to install glibc2 version 2.11 that's needed for openoffice 3.4 https://issues.apache.org/ooo/show_bug.cgi?id=119393 but i can't seem to find the dependency with yum. I already have the following dependencies installed. glibc.i686 2.5-49.el5_5.7 … >>> More
upgrade glibc on RHEL4 without breaking anything

as seen on Server Fault - Search for 'Server Fault'
I have a static version of wkhtmltopdf which requires glibc-2.4 wkhtmltopdf: /lib/tls/libc.so.6: version `GLIBC_2.4' not found (required by wkhtmltopdf) I have apt installed with the DAG repos. Other than that the server is pretty stock standard except for Coldfusion MX7. My question is, is it… >>> More
glibc version used while building .a file

as seen on Stack Overflow - Search for 'Stack Overflow'
Is there a way to find out from .a file what version of glibc is expected or was used when building the .a? >>> More