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Hannes Mehnert 2017-09-16 23:55:19 +01:00
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@ -130,16 +130,12 @@ AES128-CBC). The TLS handshake performance is equal with OpenSSL.
### Dependency management ### Dependency management
OCaml has a unique module system. A module specifies abstract datatypes MirageOS leverages OCaml's unique module system, a programming language evaluated at compile time, to adapt the unikernel to the compilation target.
and functions, and each module can have multiple implementations. Modules can In MirageOS, each operating system service, such as the console, the
take other modules as parameters, the module system is a complete programming network stack, the random number generator, is a module on its own.
language, evaluated at compile time. There are multiple implementations for each service.
MirageOS uses this module system to adapt the unikernel to the compilation target. An example is that on UNIX the sockets API of the host is used as networking stack. On a
It defines modules for all operating system services, such as the console, the unikernel, the TCP/IP stack natively implemented in OCaml is used.
network stack, the random number generator. For each service, an implementation
can be provided depending on the compilation target (UNIX process or virtual
machine). On UNIX, the sockets API is used as the networking stack. On a
virtual machine, the TCP/IP stack in OCaml is being used.
A MirageOS developer does not need to reason about compilation targets, just about the A MirageOS developer does not need to reason about compilation targets, just about the
module interface. module interface.