POSIX Programmer's Manual vs Linux Programmer's Manual The 2019 Stack Overflow Developer Survey Results Are In Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern) 2019 Community Moderator Election ResultsWhere should I install manual pages in user directory?Viewing Linux Programmer's Manual when multiple pages bear the same nameHow do I open BSD System Calls Manual instead of BSD General Commands Manual?Manual pages uses the quotation : `<character/string>' (quoting string inside grave accent and apostrophe)How and what style should I use when writing man pages?How to automatically sort the option flags in a manual?How to check if my manual is POSIX compliant?How to display a remote Linux manual (through ftp/http/https)?Why No manual entry for shopt?Search within man pages of POSIX Programmer's Manual
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POSIX Programmer's Manual vs Linux Programmer's Manual
The 2019 Stack Overflow Developer Survey Results Are In
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)
2019 Community Moderator Election ResultsWhere should I install manual pages in user directory?Viewing Linux Programmer's Manual when multiple pages bear the same nameHow do I open BSD System Calls Manual instead of BSD General Commands Manual?Manual pages uses the quotation : `<character/string>' (quoting string inside grave accent and apostrophe)How and what style should I use when writing man pages?How to automatically sort the option flags in a manual?How to check if my manual is POSIX compliant?How to display a remote Linux manual (through ftp/http/https)?Why No manual entry for shopt?Search within man pages of POSIX Programmer's Manual
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I wanted to take a look at the manpage of pthread_mutex_trylock.
By typing man pthread_mutex_trylock, I got No manual entry for pthread_mutex_trylock.
Then I saw a post suggest doing sudo apt-get install manpages-posix manpages-posix-dev.
After that I see description like:
PTHREAD_MUTEX_LOCK(3POSIX) POSIX Programmer's Manual PTHREAD_MUTEX_LOCK(3POSIX)
PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the cor‐
responding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
What's the difference between this POSIX Programmer's Manual and the Linux Programmer's Manual that I usually see?
What does it mean by saying:
The Linux implementation of this interface may differ (consult the
cor‐responding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
So where can I find the manpage for The Linux implementation of pthread_mutex_trylock ? Can I use pthread_mutex_trylock on my system ? I am using Ubuntu.
man
asked Apr 9 at 8:00
RickRick
287310
add a comment |
I wanted to take a look at the manpage of pthread_mutex_trylock.
By typing man pthread_mutex_trylock, I got No manual entry for pthread_mutex_trylock.
Then I saw a post suggest doing sudo apt-get install manpages-posix manpages-posix-dev.
After that I see description like:
PTHREAD_MUTEX_LOCK(3POSIX) POSIX Programmer's Manual PTHREAD_MUTEX_LOCK(3POSIX)
PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the cor‐
responding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
What's the difference between this POSIX Programmer's Manual and the Linux Programmer's Manual that I usually see?
What does it mean by saying:
The Linux implementation of this interface may differ (consult the
cor‐responding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
So where can I find the manpage for The Linux implementation of pthread_mutex_trylock ? Can I use pthread_mutex_trylock on my system ? I am using Ubuntu.
man
asked Apr 9 at 8:00
RickRick
287310
Why downvoted? This is a fairly reasonable question. At least I didn't know I should install the the manual for the library that implements the interface. before someone told me so.
– Rick
Apr 9 at 8:43
Many thanks to @Kusalananda resolving my confusion. See discussion from chat.stackoverflow.com/rooms/191520/…, hope that also help you.
– Rick
Apr 9 at 11:30
add a comment |
I wanted to take a look at the manpage of pthread_mutex_trylock.
By typing man pthread_mutex_trylock, I got No manual entry for pthread_mutex_trylock.
Then I saw a post suggest doing sudo apt-get install manpages-posix manpages-posix-dev.
After that I see description like:
PTHREAD_MUTEX_LOCK(3POSIX) POSIX Programmer's Manual PTHREAD_MUTEX_LOCK(3POSIX)
PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the cor‐
responding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
What's the difference between this POSIX Programmer's Manual and the Linux Programmer's Manual that I usually see?
What does it mean by saying:
The Linux implementation of this interface may differ (consult the
cor‐responding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
So where can I find the manpage for The Linux implementation of pthread_mutex_trylock ? Can I use pthread_mutex_trylock on my system ? I am using Ubuntu.
man
asked Apr 9 at 8:00
RickRick
287310
I wanted to take a look at the manpage of pthread_mutex_trylock.
By typing man pthread_mutex_trylock, I got No manual entry for pthread_mutex_trylock.
Then I saw a post suggest doing sudo apt-get install manpages-posix manpages-posix-dev.
After that I see description like:
PTHREAD_MUTEX_LOCK(3POSIX) POSIX Programmer's Manual PTHREAD_MUTEX_LOCK(3POSIX)
PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the cor‐
responding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
What's the difference between this POSIX Programmer's Manual and the Linux Programmer's Manual that I usually see?
What does it mean by saying:
The Linux implementation of this interface may differ (consult the
cor‐responding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
So where can I find the manpage for The Linux implementation of pthread_mutex_trylock ? Can I use pthread_mutex_trylock on my system ? I am using Ubuntu.
man
man
asked Apr 9 at 8:00
RickRick
287310
asked Apr 9 at 8:00
RickRick
287310
asked Apr 9 at 8:00
RickRick
287310
asked Apr 9 at 8:00
RickRick
287310
asked Apr 9 at 8:00
RickRick
287310
287310
Why downvoted? This is a fairly reasonable question. At least I didn't know I should install the the manual for the library that implements the interface. before someone told me so.
– Rick
Apr 9 at 8:43
Many thanks to @Kusalananda resolving my confusion. See discussion from chat.stackoverflow.com/rooms/191520/…, hope that also help you.
– Rick
Apr 9 at 11:30
add a comment |
Why downvoted? This is a fairly reasonable question. At least I didn't know I should install the the manual for the library that implements the interface. before someone told me so.
– Rick
Apr 9 at 8:43
Many thanks to @Kusalananda resolving my confusion. See discussion from chat.stackoverflow.com/rooms/191520/…, hope that also help you.
– Rick
Apr 9 at 11:30
Why downvoted? This is a fairly reasonable question. At least I didn't know I should install the the manual for the library that implements the interface. before someone told me so.
– Rick
Apr 9 at 8:43
Why downvoted? This is a fairly reasonable question. At least I didn't know I should install the the manual for the library that implements the interface. before someone told me so.
– Rick
Apr 9 at 8:43
Many thanks to @Kusalananda resolving my confusion. See discussion from chat.stackoverflow.com/rooms/191520/…, hope that also help you.
– Rick
Apr 9 at 11:30
Many thanks to @Kusalananda resolving my confusion. See discussion from chat.stackoverflow.com/rooms/191520/…, hope that also help you.
– Rick
Apr 9 at 11:30
add a comment |
1 Answer
1
active
oldest
votes
It says that because there's no guarantee that the POSIX manuals (for anything) corresponds to the actual implementation of the corresponding thing on your particular system.
To get the manual for pthread_mutex_trylock(), install the the manual for the library that implements the interface.
On Ubuntu systems, the required manual seems to be part of the glibc-doc package (found by searching for the function name on the Ubuntu package search pages).
The POSIX manual are definitely not useless. The local Linux interface should be compatible with the interface described in the POSIX manual, but the implementation-specific manual may also mentions caveats and Linux-specific implementation details and extensions, and similar non-POSIX functions.
The POSIX manuals becomes extra important if you are concerned about the portability of your code to other Unix systems, in which case you would want to avoid relying on Linux-specific extensions to the POSIX specification.
answered Apr 9 at 8:06
Kusalananda♦Kusalananda
141k17263439
Ok. Let me check that link. So I should never rely on the POSIX manuals but the manual for the library that implements the interface right?
– Rick
Apr 9 at 8:12
@Rick See updated answer.
– Kusalananda♦
Apr 9 at 8:19
Another question, whypthread_createis included in the Linux Programmer's Manual, while some other likepthread_mutex_lockis not? Why?
– Rick
Apr 9 at 8:22
@Rick Sorry, the package seems to beglibc-doc. I'll look at the followup question when I'm not on the phone. Could you make it part of the main question please?
– Kusalananda♦
Apr 9 at 8:30
@Rick the glibc manpages include one forpthread_mutex_lock: manpages.ubuntu.com/manpages/cosmic/en/man3/…
– muru
Apr 9 at 8:31
|
show 4 more comments
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1 Answer
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oldest
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1 Answer
1
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oldest
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active
oldest
votes
It says that because there's no guarantee that the POSIX manuals (for anything) corresponds to the actual implementation of the corresponding thing on your particular system.
To get the manual for pthread_mutex_trylock(), install the the manual for the library that implements the interface.
On Ubuntu systems, the required manual seems to be part of the glibc-doc package (found by searching for the function name on the Ubuntu package search pages).
The POSIX manual are definitely not useless. The local Linux interface should be compatible with the interface described in the POSIX manual, but the implementation-specific manual may also mentions caveats and Linux-specific implementation details and extensions, and similar non-POSIX functions.
The POSIX manuals becomes extra important if you are concerned about the portability of your code to other Unix systems, in which case you would want to avoid relying on Linux-specific extensions to the POSIX specification.
answered Apr 9 at 8:06
Kusalananda♦Kusalananda
141k17263439
Ok. Let me check that link. So I should never rely on the POSIX manuals but the manual for the library that implements the interface right?
– Rick
Apr 9 at 8:12
@Rick See updated answer.
– Kusalananda♦
Apr 9 at 8:19
Another question, whypthread_createis included in the Linux Programmer's Manual, while some other likepthread_mutex_lockis not? Why?
– Rick
Apr 9 at 8:22
@Rick Sorry, the package seems to beglibc-doc. I'll look at the followup question when I'm not on the phone. Could you make it part of the main question please?
– Kusalananda♦
Apr 9 at 8:30
@Rick the glibc manpages include one forpthread_mutex_lock: manpages.ubuntu.com/manpages/cosmic/en/man3/…
– muru
Apr 9 at 8:31
|
show 4 more comments
It says that because there's no guarantee that the POSIX manuals (for anything) corresponds to the actual implementation of the corresponding thing on your particular system.
To get the manual for pthread_mutex_trylock(), install the the manual for the library that implements the interface.
On Ubuntu systems, the required manual seems to be part of the glibc-doc package (found by searching for the function name on the Ubuntu package search pages).
The POSIX manual are definitely not useless. The local Linux interface should be compatible with the interface described in the POSIX manual, but the implementation-specific manual may also mentions caveats and Linux-specific implementation details and extensions, and similar non-POSIX functions.
The POSIX manuals becomes extra important if you are concerned about the portability of your code to other Unix systems, in which case you would want to avoid relying on Linux-specific extensions to the POSIX specification.
answered Apr 9 at 8:06
Kusalananda♦Kusalananda
141k17263439
Ok. Let me check that link. So I should never rely on the POSIX manuals but the manual for the library that implements the interface right?
– Rick
Apr 9 at 8:12
@Rick See updated answer.
– Kusalananda♦
Apr 9 at 8:19
Another question, whypthread_createis included in the Linux Programmer's Manual, while some other likepthread_mutex_lockis not? Why?
– Rick
Apr 9 at 8:22
@Rick Sorry, the package seems to beglibc-doc. I'll look at the followup question when I'm not on the phone. Could you make it part of the main question please?
– Kusalananda♦
Apr 9 at 8:30
@Rick the glibc manpages include one forpthread_mutex_lock: manpages.ubuntu.com/manpages/cosmic/en/man3/…
– muru
Apr 9 at 8:31
|
show 4 more comments
It says that because there's no guarantee that the POSIX manuals (for anything) corresponds to the actual implementation of the corresponding thing on your particular system.
To get the manual for pthread_mutex_trylock(), install the the manual for the library that implements the interface.
On Ubuntu systems, the required manual seems to be part of the glibc-doc package (found by searching for the function name on the Ubuntu package search pages).
The POSIX manual are definitely not useless. The local Linux interface should be compatible with the interface described in the POSIX manual, but the implementation-specific manual may also mentions caveats and Linux-specific implementation details and extensions, and similar non-POSIX functions.
The POSIX manuals becomes extra important if you are concerned about the portability of your code to other Unix systems, in which case you would want to avoid relying on Linux-specific extensions to the POSIX specification.
answered Apr 9 at 8:06
Kusalananda♦Kusalananda
141k17263439
It says that because there's no guarantee that the POSIX manuals (for anything) corresponds to the actual implementation of the corresponding thing on your particular system.
To get the manual for pthread_mutex_trylock(), install the the manual for the library that implements the interface.
On Ubuntu systems, the required manual seems to be part of the glibc-doc package (found by searching for the function name on the Ubuntu package search pages).
The POSIX manual are definitely not useless. The local Linux interface should be compatible with the interface described in the POSIX manual, but the implementation-specific manual may also mentions caveats and Linux-specific implementation details and extensions, and similar non-POSIX functions.
The POSIX manuals becomes extra important if you are concerned about the portability of your code to other Unix systems, in which case you would want to avoid relying on Linux-specific extensions to the POSIX specification.
answered Apr 9 at 8:06
Kusalananda♦Kusalananda
141k17263439
edited Apr 9 at 8:28
answered Apr 9 at 8:06
Kusalananda♦Kusalananda
141k17263439
answered Apr 9 at 8:06
Kusalananda♦Kusalananda
141k17263439
answered Apr 9 at 8:06
Kusalananda♦Kusalananda
141k17263439
141k17263439
Ok. Let me check that link. So I should never rely on the POSIX manuals but the manual for the library that implements the interface right?
– Rick
Apr 9 at 8:12
@Rick See updated answer.
– Kusalananda♦
Apr 9 at 8:19
Another question, whypthread_createis included in the Linux Programmer's Manual, while some other likepthread_mutex_lockis not? Why?
– Rick
Apr 9 at 8:22
@Rick Sorry, the package seems to beglibc-doc. I'll look at the followup question when I'm not on the phone. Could you make it part of the main question please?
– Kusalananda♦
Apr 9 at 8:30
@Rick the glibc manpages include one forpthread_mutex_lock: manpages.ubuntu.com/manpages/cosmic/en/man3/…
– muru
Apr 9 at 8:31
|
show 4 more comments
Ok. Let me check that link. So I should never rely on the POSIX manuals but the manual for the library that implements the interface right?
– Rick
Apr 9 at 8:12
@Rick See updated answer.
– Kusalananda♦
Apr 9 at 8:19
Another question, whypthread_createis included in the Linux Programmer's Manual, while some other likepthread_mutex_lockis not? Why?
– Rick
Apr 9 at 8:22
@Rick Sorry, the package seems to beglibc-doc. I'll look at the followup question when I'm not on the phone. Could you make it part of the main question please?
– Kusalananda♦
Apr 9 at 8:30
@Rick the glibc manpages include one forpthread_mutex_lock: manpages.ubuntu.com/manpages/cosmic/en/man3/…
– muru
Apr 9 at 8:31
Ok. Let me check that link. So I should never rely on the POSIX manuals but the manual for the library that implements the interface right?
– Rick
Apr 9 at 8:12
Ok. Let me check that link. So I should never rely on the POSIX manuals but the manual for the library that implements the interface right?
– Rick
Apr 9 at 8:12
@Rick See updated answer.
– Kusalananda♦
Apr 9 at 8:19
@Rick See updated answer.
– Kusalananda♦
Apr 9 at 8:19
Another question, why
pthread_create is included in the Linux Programmer's Manual, while some other like pthread_mutex_lock is not? Why?– Rick
Apr 9 at 8:22
Another question, why
pthread_create is included in the Linux Programmer's Manual, while some other like pthread_mutex_lock is not? Why?– Rick
Apr 9 at 8:22
@Rick Sorry, the package seems to be
glibc-doc. I'll look at the followup question when I'm not on the phone. Could you make it part of the main question please?– Kusalananda♦
Apr 9 at 8:30
@Rick Sorry, the package seems to be
glibc-doc. I'll look at the followup question when I'm not on the phone. Could you make it part of the main question please?– Kusalananda♦
Apr 9 at 8:30
@Rick the glibc manpages include one for
pthread_mutex_lock: manpages.ubuntu.com/manpages/cosmic/en/man3/…– muru
Apr 9 at 8:31
@Rick the glibc manpages include one for
pthread_mutex_lock: manpages.ubuntu.com/manpages/cosmic/en/man3/…– muru
Apr 9 at 8:31
|
show 4 more comments
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Why downvoted? This is a fairly reasonable question. At least I didn't know I should install the the manual for the library that implements the interface. before someone told me so.
– Rick
Apr 9 at 8:43
Many thanks to @Kusalananda resolving my confusion. See discussion from chat.stackoverflow.com/rooms/191520/…, hope that also help you.
– Rick
Apr 9 at 11:30