Awesome

Ada Process API (spawn)

This library provides simple API to spawn processes and communicate with them. We provide two implementations of the same API - the integrated into Glib event loop and the independent.

Install

Using alire

Run alr get --build spawn or alr get --build spawn_glib.

Also you can build from the cloned repository directory with

alr build

For spawn_glib do this in packages/glib subdirectory:

cd packages/glib
alr build

Build from sources

Clone repository or unpack source archive, then run

make all install PREFIX=/path/to/install

Usage

Add with "spawn"; or with "spawn_glib"; to your project file.
Create a process object:
```
P : Spawn.Processes.Process;
```
Assign program name
```
P.Set_Program ("/bin/bash");
```
(Optional) Assign command line arguments, working directory, environments variables.
Assign an event listener
```
P.Set_Listener (L'Unchecked_Access);
```
Start the process:
```
P.Start;
```
(Glib independent case) With no event loop integration you should drive it by you-self periodically calling
```
Spawn.Processes.Monitor_Loop (1);
```

The listener will get these events:

Standard_Output_Available
Standard_Error_Available
Standard_Input_Available
Started
Finished
Error_Occurred
Exception_Occurred

See an example in the spawn test

State diagram

Next diagram shows process states and emited events during its life:

state diagram

You should NOT finalize process object until it in Not_Running state.

Maintainer

AdaCore

Contribute

Feel free to dive in! Open an issue or submit PRs.