IBM Z Hardware and Operating Systems Ideas Portal


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LE

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Provide an option to prevent RPTSTG(ON) from internally resetting the initial stack size

When RPTSTG(ON) option is set, LE resets the initial stack size to 1MB for 64-bit applications. This is fine for code in which LE automatically expands the stack when needed, however for generated code (as in JavaScript code from Node.js) in which...
almost 5 years ago in z/OS / LE 2 Not under consideration

Extend CEEENTRY to support Debug Tool "Delayed Debugging"

Actually Language Environment Assembler Programs do not support Debug Tools Delayed (or Deferred) debugging due to the fact that the CEEENTRY macro does not register for "New Program Entry Point Event" as is done for LE Enabled COBOL, PLI and C/C+...
about 7 years ago in z/OS / LE 1 Future consideration

Enhance performance of fseek on multi-volume FBS data sets.

Function fseek should offer the same performance on FBS data sets regardless of how many volumes they are stored on.
over 7 years ago in z/OS / LE 0 Future consideration

LE individual modules CEEROPT and CEEUOPT should be treated the same

CEEROPT and CEEUOPT allow for the passage of LE options at the individual job/application level. However, currently CEEROPT and be loaded from STEPLIB while CEEUOPT requires that it be linked with the application/program. CEEROPT is for region lev...
over 2 years ago in z/OS / LE 1 Not under consideration

C fopen() fails with errno 41 for VSAM VRRDS files; EDC5041I An error was detected at the system level when opening a file.

We have products that use the VSAM VRRDS file type. We would like to use Java and the JZOS Toolkit to open and read these files while remaining zIIP eligable. The JZOS Toolkit uses the C fopen() to open VSAM files and this fails for the VRRDS file...
almost 8 years ago in z/OS / LE 1 Not under consideration

LE __heaprpt() that doesn't freeze all threads

We use the LE callable service __heaprpt() from C++ but it causes all threads to be frozen. Can we have a version that doesn't freeze threads (i.e from volatile fields in control blocks)? We don't mind if it's closely approximate.
over 5 years ago in z/OS / LE 1 Future consideration

CEEDUMP truncated names of entry points

When forming CEEDUMP truncated the names of the entry points. Printed only the first 64 characters. CEEDUMP must contain a fully qualified entry point names.
over 8 years ago in z/OS / LE 1 Future consideration

CEL4RO31 supports multiple threads

Currently when to use CEL4RO31 to do convertion from 64 bits to 31 bit, CELQGIPB just supports one single thread, but can not support multiple threads. For some applications, especially for web application, one request is one thread, so CEL4RO31 c...
about 3 years ago in z/OS / LE 1 Future consideration

64-bit version of CEE3ERP required

CICS TS 4.2 and above provide support for Java by running a JVM within a 64-bit PIPI enclave (CELQPIPI). Every thread within the enclave begins life as an LE pthread and so has the LE ESTAE active for error handling. CICS enabled threads will addi...
over 9 years ago in z/OS / LE 2 Future consideration

Unexpected CEELAA_STACKFLOOR64 address when storage initialization is used

During testing of IBM Fault Analyzer for z/OS, we encountered a problem with the CEELAA_STACKFLOOR64 field. Fault Analyzer uses this value to determine the valid address range of the stack storage when checking a possible DSA address. Basically, i...
over 6 years ago in z/OS / LE 1 Not under consideration

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