pthread_rwlockattr_setpshared(3) [mojave man page]
PTHREAD_RWLOCKATTR_SETPSHARED(3) BSD Library Functions Manual PTHREAD_RWLOCKATTR_SETPSHARED(3)NAME
pthread_rwlockattr_setpshared -- set the process shared attribute
SYNOPSIS
#include <pthread.h>
int
pthread_rwlockattr_setpshared(pthread_rwlockattr_t *attr, int pshared);
DESCRIPTION
The pthread_rwlockattr_setpshared() function sets the process shared attribute of attr to the value referenced by pshared. The pshared argu-
ment may be one of two values:
PTHREAD_PROCESS_SHARED Any thread of any process that has access to the memory where the read/write lock resides can manipulate the lock.
PTHREAD_PROCESS_PRIVATE Only threads created within the same process as the thread that initialized the read/write lock can manipulate the
lock. This is the default value.
RETURN VALUES
If successful, the pthread_rwlockattr_setpshared() function will return zero. Otherwise an error number will be returned to indicate the
error.
ERRORS
The pthread_rwlockattr_setpshared() function will fail if:
[EINVAL] The value specified by attr or pshared is invalid.
SEE ALSO pthread_rwlock_init(3), pthread_rwlockattr_getpshared(3), pthread_rwlockattr_init(3)STANDARDS
The pthread_rwlockattr_setpshared() function is expected to conform to Version 2 of the Single UNIX Specification (``SUSv2'').
HISTORY
The pthread_rwlockattr_setpshared() function first appeared in FreeBSD 3.0.
BUGS
The PTHREAD_PROCESS_SHARED attribute is not supported.
BSD August 4, 1998 BSD
Check Out this Related Man Page
PTHREAD_RWLOCKATTR_SETPSHARED(3) BSD Library Functions Manual PTHREAD_RWLOCKATTR_SETPSHARED(3)NAME
pthread_rwlockattr_setpshared -- set the process shared attribute
LIBRARY
POSIX Threads Library (libpthread, -lpthread)
SYNOPSIS
#include <pthread.h>
int
pthread_rwlockattr_setpshared(pthread_rwlockattr_t *attr, int pshared);
DESCRIPTION
The pthread_rwlockattr_setpshared() function sets the process shared attribute of attr to the value referenced by pshared. The pshared argu-
ment may be one of two values:
PTHREAD_PROCESS_SHARED Any thread of any process that has access to the memory where the read/write lock resides can manipulate the lock.
PTHREAD_PROCESS_PRIVATE Only threads created within the same process as the thread that initialized the read/write lock can manipulate the
lock. This is the default value.
RETURN VALUES
If successful, the pthread_rwlockattr_setpshared() function will return zero. Otherwise an error number will be returned to indicate the
error.
ERRORS
The pthread_rwlockattr_setpshared() function will fail if:
[EINVAL] The value specified by attr or pshared is invalid.
SEE ALSO pthread_rwlock_init(3), pthread_rwlockattr_getpshared(3), pthread_rwlockattr_init(3)STANDARDS
The pthread_rwlockattr_setpshared() function is expected to conform to Version 2 of the Single UNIX Specification (``SUSv2'').
HISTORY
The pthread_rwlockattr_setpshared() function first appeared in FreeBSD 3.0.
BUGS
The PTHREAD_PROCESS_SHARED attribute is not supported.
BSD August 4, 1998 BSD
Split large xml into mutiple files and with header and footer in file
tried below
it splits unevenly and also i need help in adding header and footer
command :
csplit -s -k -f my_XML_split.xml extrfile.xml "/<Document>/" {1}
sample xml
<?xml version="1.0" encoding="UTF-8"?><Recipient>... (36 Replies)
Here are instructions to clear the data cache for four browsers, Safari, Chrome, Firefox, Opera. In these examples I'm using MacOS Mojave, but it should be similar for any OS.
You can use these instructions to to clear and reload the cache if you have any issues with the Vue.js UserCP (current... (1 Reply)
Yesterday someone asked me to install TeamViewer and share my Mac screen with them while on a conference call.
I shut down my Mac before sleeping and woke up to some major problem with my 12-core CPU in hyperdrive, and the system activity monitor showed my Mac kernel_task was at 1,200% and the... (30 Replies)
What is the point of this? Whenever I close my shell it appends to the history file without adding this. I have never seen it overwrite my history file.
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend (3 Replies)
Hi,
I am attempting to extract the /lib/ paths using sed but it does not appear to work.
./copy_chroot_lib.sh ls echo | sed s#*\(/lib\).*#\1#g
linux-vdso.so.1 (0x00007fff77df1000)
libselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 (0x00007f28190ac000)
... (8 Replies)
hi,
I am searching for a native tool on MacOS that can increase the resolution of a group of image files whose aspect ratios (file width versus height) vary widely. There are numerous files so I don't wish to do this manually. Someone suggested the sips command with the resampling option but... (5 Replies)
I'm trying to use a bash script for a psych experiment that involves listening to sound files and responding. If I have something like the code below, how can I make sure that a key press is assigned to RESPONSE only after the second echo statement?
for i in 1 2 3; do
echo "Ready?"
sleep 2
... (10 Replies)
Hi all...
Well guys and gals, I jumped in at the deep end and found things that PERL cannot do by default.
Many tricky terminal escape codes are not catered for so I had to create workarounds.
One thing I searched for was this:
Passing perl variable to shell command
AND, @Neo this was... (15 Replies)
Python 3.8.0rc1 released today, 1st October 2019...
Just tried it out testing my AMIGA Python 1.4.0 code inside it and all are working, I can now test to the latest Python incarnation now.
Subjective opinion is that is seems seriously quick on my OSX 10.14.6, latest Mojave update.
Python... (0 Replies)
Hi Guys,
I wrote a collection of bash functions years ago and now need to use them again but
I'm getting some error messages when eval tries to expand the variables names.
I recollect that I used the shopt command to set one of the options but I can't quite
remember the command that I... (8 Replies)
I'm trying to complete a bash script to capture if an external webcam is active in a video conference session. Some users will switch the camera to the built-in MAC camera. When this happens I want to trigger a set of events.
Things tried: reviewed the console.app to look for patterns on when... (6 Replies)