What's new for Language Environment® for z/OS Version 1 Release 11

For z/OS Version 1 Release 11, Language Environment has the following changes:

• Application enablement
  • IEEE decimal floating-point (DFP) support

    z/OS Language Environment provides additional DFP functions in the C/C++ run-time library. In addition, it adds new conversion specifiers for the printf() family of functions.

    For more information, see:

    • z/OS XL C/C++ Run-Time Library Reference
    • z/OS XL C/C++ Programming Guide
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  • Assembler macro support

    z/OS Language Environment provides a new assembler macro, CEEGLOB. Support is added for the RMODE and AMODE keywords on the CEEENTRY macro. Support is added to the CEEFETCH macro to handle non-Language Environment routines. Support is added for the SERVICE keyword on the CEEPPA macro.

    For more information, see:

    • z/OS XL C/C++ Run-Time Library Reference
    • IBM Enterprise COBOL for z/OS Migration Guide
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  • CICS additional floating-point support

    Language Environment, in conjunction with CICS Transaction Server for z/OS, Version 4, is designed to support IEEE binary floating-point (BFP) and IEEE decimal floating-point (DFP) in applications run under the Language Environment-CICS extended run-time language interface (ERTLI).

    For more information, see the CICS chapter in:

    • z/OS Language Environment Programming Guide
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• AMODE 64 enhancements
  • Support for GETSTORE, FREESTORE, and MSGRTN

    z/OS Language Environment provides support in CELQPIPI for the GETSTORE, FREESTORE, and MSGRTN service routines similar to those routines in CEEPIPI.

    For more information, see:

    • z/OS Language Environment Programming Guide for 64-bit Virtual Addressing Mode
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  • Large Page Support

    Language Environment provides support in __moservices() for allocating memory objects that are to be backed with large page frames.

    For more information, see:

    • z/OS XL C/C++ Run-Time Library Reference
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• Reliability, availability, and serviceability

  Language Environment is enhanced to provide the following:

  • Syscall trace

    Language Environment, in conjunction with z/OS UNIX System Services, provides a new signal, SIGTRACE, that can be used to start and stop the syscall trace.

    For more information, see:

    • z/OS UNIX System Services Programming: Assembler Callable Services Reference
    • z/OS Language Environment Debugging Guide
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  • Heap pools

    Language Environment provides LEDATA formatting of heap pools information. In addition, the heap pools trace capability is enhanced.

    For more information, see:

    • z/OS Language Environment Debugging Guide
    • z/OS Language Environment Programming Reference
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  • File I/O tracing

    Language Environment provides a stream I/O tracing mechanism within the C/C++ run-time library.

    For more information, see:

    • z/OS XL C/C++ Programming Guide
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• Globalization

  z/OS Language Environment provides locale support for Serbia.

  For more information, see:

  • z/OS XL C/C++ Programming Guide
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• File system remount

  Language Environment, in conjunction with z/OS UNIX System Services, provides a new option for umount() that supports a remount (unmount and mount) in the same mode.

  For more information, see:

  • z/OS XL C/C++ Run-Time Library Reference
  • z/OS UNIX System Services Programming: Assembler Callable Services Reference
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• Asynchronous I/O support

  Updates are made to the C/C++ run-time header file to support an asynchronous I/O form of accept_and_recv(). This support is in conjunction with z/OS UNIX System Services.

  For more information, see:

  • z/OS XL C/C++ Run-Time Library Reference
  • z/OS UNIX System Services Programming: Assembler Callable Services Reference
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• I/O support for extended address volumes (EAVs)

  Language Environment provides I/O support within the C/C++ run-time library for extended format sequential data sets residing in the extended addressing space on extended address volumes (EAVs).

  For more information, see:

  • z/OS XL C/C++ Programming Guide
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• XPLINK

  z/OS Language Environment improves performance for certain pthread condition variable functions.