https://github.com/dramforever/threaded-code-demo

Some demonstrations of threaded code techniques
https://github.com/dramforever/threaded-code-demo

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Some demonstrations of threaded code techniques

• Host: GitHub
• URL: https://github.com/dramforever/threaded-code-demo
• Owner: dramforever
• Created: 2023-11-19T12:07:51.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2023-11-19T17:35:08.000Z (about 1 year ago)
• Last Synced: 2023-11-20T13:31:54.324Z (about 1 year ago)
• Language: C
• Size: 4.88 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Threaded code demo

Complete demos for my article Threaded code explained in C at 

Some demonstrations of threaded code techniques

- `bytecode.c`: Bytecode (Not technically threaded)

- `direct.c`: Direct threaded code

- `indirect.c`: Indirect threaded code

- `pctc.c`: Primitive-centric threaded code

- `pctc_opt.c`: Primitive-centric threaded code (Optimized to encourage the compiler to use registers)

Primitive-centric threaded code is described in [Direct or Indirect Threaded?][gforth-pctc] in the Gforth manual.

[gforth-pctc]: https://gforth.org/manual/Direct-or-Indirect-Threaded_003f.html

Each of the demo files needs to be compiled along with / linked to `main.c` such as:

```console

$ gcc -o direct direct.c main.c

$ ./direct      # Run the demo

```

Or equivalently, using the convenience `Makefile`:

```console

$ make direct   # Build one demo

$ make          # Build everything

```

Each demo simply prints a number to show that it will run. The expected outputs are:

- `bytecode`: `2`

- `direct`: `2`

- `indirect`: `4`

- `pctc`: `6`

- `pctc_opt`: `6`