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rtems-docs/posix_users/language_specific_services.rst
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Language-Specific Services for the C Programming Language Manager
#################################################################
Introduction
============
The
language-specific services for the C programming language manager is ...
The directives provided by the language-specific services for the C programming language manager are:
- ``setlocale`` - Set the Current Locale
- ``fileno`` - Obtain File Descriptor Number for this File
- ``fdopen`` - Associate Stream with File Descriptor
- ``flockfile`` - Acquire Ownership of File Stream
- ``ftrylockfile`` - Poll to Acquire Ownership of File Stream
- ``funlockfile`` - Release Ownership of File Stream
- ``getc_unlocked`` - Get Character without Locking
- ``getchar_unlocked`` - Get Character from stdin without Locking
- ``putc_unlocked`` - Put Character without Locking
- ``putchar_unlocked`` - Put Character to stdin without Locking
- ``setjmp`` - Save Context for Non-Local Goto
- ``longjmp`` - Non-Local Jump to a Saved Context
- ``sigsetjmp`` - Save Context with Signal Status for Non-Local Goto
- ``siglongjmp`` - Non-Local Jump with Signal Status to a Saved Context
- ``tzset`` - Initialize Time Conversion Information
- ``strtok_r`` - Reentrant Extract Token from String
- ``asctime_r`` - Reentrant struct tm to ASCII Time Conversion
- ``ctime_r`` - Reentrant time_t to ASCII Time Conversion
- ``gmtime_r`` - Reentrant UTC Time Conversion
- ``localtime_r`` - Reentrant Local Time Conversion
- ``rand_r`` - Reentrant Random Number Generation
Background
==========
There is currently no text in this section.
Operations
==========
There is currently no text in this section.
Directives
==========
This section details the language-specific services for the C programming language manager’s directives.
A subsection is dedicated to each of this manager’s directives
and describes the calling sequence, related constants, usage,
and status codes.
setlocale - Set the Current Locale
----------------------------------
.. index:: setlocale
.. index:: set the current locale
**CALLING SEQUENCE:**
.. code:: c
int setlocale(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
fileno - Obtain File Descriptor Number for this File
----------------------------------------------------
.. index:: fileno
.. index:: obtain file descriptor number for this file
**CALLING SEQUENCE:**
.. code:: c
int fileno(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
fdopen - Associate Stream with File Descriptor
----------------------------------------------
.. index:: fdopen
.. index:: associate stream with file descriptor
**CALLING SEQUENCE:**
.. code:: c
int fdopen(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
flockfile - Acquire Ownership of File Stream
--------------------------------------------
.. index:: flockfile
.. index:: acquire ownership of file stream
**CALLING SEQUENCE:**
.. code:: c
int flockfile(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
ftrylockfile - Poll to Acquire Ownership of File Stream
-------------------------------------------------------
.. index:: ftrylockfile
.. index:: poll to acquire ownership of file stream
**CALLING SEQUENCE:**
.. code:: c
int ftrylockfile(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
funlockfile - Release Ownership of File Stream
----------------------------------------------
.. index:: funlockfile
.. index:: release ownership of file stream
**CALLING SEQUENCE:**
.. code:: c
int funlockfile(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
getc_unlocked - Get Character without Locking
---------------------------------------------
.. index:: getc_unlocked
.. index:: get character without locking
**CALLING SEQUENCE:**
.. code:: c
int getc_unlocked(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
getchar_unlocked - Get Character from stdin without Locking
-----------------------------------------------------------
.. index:: getchar_unlocked
.. index:: get character from stdin without locking
**CALLING SEQUENCE:**
.. code:: c
int getchar_unlocked(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
putc_unlocked - Put Character without Locking
---------------------------------------------
.. index:: putc_unlocked
.. index:: put character without locking
**CALLING SEQUENCE:**
.. code:: c
int putc_unlocked(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
putchar_unlocked - Put Character to stdin without Locking
---------------------------------------------------------
.. index:: putchar_unlocked
.. index:: put character to stdin without locking
**CALLING SEQUENCE:**
.. code:: c
int putchar_unlocked(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
setjmp - Save Context for Non-Local Goto
----------------------------------------
.. index:: setjmp
.. index:: save context for non
**CALLING SEQUENCE:**
.. code:: c
int setjmp(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
longjmp - Non-Local Jump to a Saved Context
-------------------------------------------
.. index:: longjmp
.. index:: non
**CALLING SEQUENCE:**
.. code:: c
int longjmp(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
sigsetjmp - Save Context with Signal Status for Non-Local Goto
--------------------------------------------------------------
.. index:: sigsetjmp
.. index:: save context with signal status for non
**CALLING SEQUENCE:**
.. code:: c
int sigsetjmp(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
siglongjmp - Non-Local Jump with Signal Status to a Saved Context
-----------------------------------------------------------------
.. index:: siglongjmp
.. index:: non
**CALLING SEQUENCE:**
.. code:: c
int siglongjmp(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
tzset - Initialize Time Conversion Information
----------------------------------------------
.. index:: tzset
.. index:: initialize time conversion information
**CALLING SEQUENCE:**
.. code:: c
int tzset(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
strtok_r - Reentrant Extract Token from String
----------------------------------------------
.. index:: strtok_r
.. index:: reentrant extract token from string
**CALLING SEQUENCE:**
.. code:: c
int strtok_r(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
asctime_r - Reentrant struct tm to ASCII Time Conversion
--------------------------------------------------------
.. index:: asctime_r
.. index:: reentrant struct tm to ascii time conversion
**CALLING SEQUENCE:**
.. code:: c
int asctime_r(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
ctime_r - Reentrant time_t to ASCII Time Conversion
---------------------------------------------------
.. index:: ctime_r
.. index:: reentrant time_t to ascii time conversion
**CALLING SEQUENCE:**
.. code:: c
int ctime_r(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
gmtime_r - Reentrant UTC Time Conversion
----------------------------------------
.. index:: gmtime_r
.. index:: reentrant utc time conversion
**CALLING SEQUENCE:**
.. code:: c
int gmtime_r(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
localtime_r - Reentrant Local Time Conversion
---------------------------------------------
.. index:: localtime_r
.. index:: reentrant local time conversion
**CALLING SEQUENCE:**
.. code:: c
int localtime_r(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
rand_r - Reentrant Random Number Generation
-------------------------------------------
.. index:: rand_r
.. index:: reentrant random number generation
**CALLING SEQUENCE:**
.. code:: c
int rand_r(
);
**STATUS CODES:**
*E*
The
**DESCRIPTION:**
**NOTES:**
.. COMMENT: COPYRIGHT (c) 1988-2002.
.. COMMENT: On-Line Applications Research Corporation (OAR).
.. COMMENT: All rights reserved.
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