Description

The H Toolkit (H) provides HOSS programs a number of useful basic abstractions, including a common return code framework, diagnostics and identifier utilities, event-processing facilities for multiple independent event sources, and inter-process communication. Although HOSS programs are not required to use these facilities, doing so promotes a certain degree of uniformity in the distributed HOSS environment.

H consists of four packages: infrastructure (return codes and basic ADT's), base (diagnostics and identifiers), event processing (multiple independent event source management), and inter-process communication (IPC), as well as two open sets of extensions. Specific extensions provide concrete implementations of the generic event queue processing abstraction of the event processing package or of the generic medium abstractions of the IPC package. The current release provides two event queue processor implementations (Xt and Hport) and one medium (TLI).

Documentation

• H Programmer's Guide scheduled for release late June 1997
• H Reference Guide scheduled for release late June 1997
• HDC Generated API Guide
  

Software Releases

Current release: H-4.2.2 [1997.06.02]

Software requirements:
base component: none
extensions: none
documentation: HDC-4.0.0+.
Distributions:

H-4.2.2 source (201K)
H-4.2.2 prebuilt for Sparc/Solaris 2.4 (2409K)


Scheduled next release: none

Change log:

H-4.2.2 [1997.06.02] - fixed installation targets
H-4.2.1 [1997.05.19] - fixed Hid_Assign, Heqp_Free
H-4.2.0 [1997.01.06] - removed fsema module from evproc package
H-4.1.0 [1996.05.08] - added args module in ipc package
H-4.0.0 [1996.02.14] - initial release

Installation Instructions

To install H, follow the generic installation directions found on the general HOSS software information page. Symbolic links to the distribution directory and include directory are made by automatically when building the "install" target.

Problems

This section contains a list of known bugs, problems, and missing features. If you would like to report a bug, mail hadmin@csdl.tamu.edu.

The problems listed here refer to the current version of H, 4.2.2 [1997.06.02].

• really could use a "generate printable form of id" function (pnuern@csdl.tamu.edu)
  
• tli_Write copies 4096 bytes into fast frame even if the source is smaller (pnuern@csdl.tamu.edu)