TruffleC: A C implementation on top of JVM (2014)

#1

Post by sigsev_251 » Fri, Aug 12, 2022, 6:27 AM UTC

TruffleC: A C implementation on top of JVM (2014)
dl.acm.org

Re: TruffleC: A C implementation on top of JVM (2014)

#2

Post by th0ma5 » Fri, Aug 12, 2022, 7:40 AM UTC

Only 7% slower seems amazing. To me at least.

Re: TruffleC: A C implementation on top of JVM (2014)

#3

Post by realitysballs » Fri, Aug 12, 2022, 7:40 AM UTC

Way over my head here , but can someone perhaps explain the value and/or use-case of running c within a jvm?

Re: TruffleC: A C implementation on top of JVM (2014)

#4

Post by dan-robertson » Fri, Aug 12, 2022, 7:53 AM UTC

realitysballs wrote: post #3

Way over my head here , but can someone perhaps explain the value and/or use-case of running c within a jvm?

The equivalent of link time optimisation with Java, perhaps?

Re: TruffleC: A C implementation on top of JVM (2014)

#5

Post by rvieira » Fri, Aug 12, 2022, 7:54 AM UTC

realitysballs wrote: post #3

Way over my head here , but can someone perhaps explain the value and/or use-case of running c within a jvm?

I could be wrong, but can't Truffle languages freely interoperate within the JVM? (https://www.graalvm.org/22.0/reference-manual/polyglot-progr...)

Re: TruffleC: A C implementation on top of JVM (2014)

#6

Post by aardvark179 » Fri, Aug 12, 2022, 7:56 AM UTC

realitysballs wrote: post #3

Way over my head here , but can someone perhaps explain the value and/or use-case of running c within a jvm?

So, many dynamic languages have a C API that allows you to write methods in C, and for those methods to do things to objects of the higher level language. This is normally a big optimisation boundary because you have to assume any value could have been altered during a C call. However if you run your C extensions through the same framework as you implement your hogh level language then you can remove that optimisation boundary entirely.

Re: TruffleC: A C implementation on top of JVM (2014)

#7

Post by Tiddles-the2nd » Fri, Aug 12, 2022, 7:59 AM UTC

realitysballs wrote: post #3

Way over my head here , but can someone perhaps explain the value and/or use-case of running c within a jvm?

As an interpreter, it could be very powerful for development, prototyping, and developing POCs.

Re: TruffleC: A C implementation on top of JVM (2014)

#8

Post by EmilyHughes » Fri, Aug 12, 2022, 7:59 AM UTC

realitysballs wrote: post #3

Way over my head here , but can someone perhaps explain the value and/or use-case of running c within a jvm?

Mostly migration of legacy programs probably, so companies can say they ported their stuff to java. It's stupid but companies do it.

Re: TruffleC: A C implementation on top of JVM (2014)

#9

Post by [deleted] » Fri, Aug 12, 2022, 8:03 AM UTC

[deleted]

Re: TruffleC: A C implementation on top of JVM (2014)

#10

Post by pantulis » Fri, Aug 12, 2022, 8:18 AM UTC

th0ma5 wrote: post #2

Only 7% slower seems amazing. To me at least.

The JVM runtinme is not easy to beat performance-wise for what it does, wonder how many man-hours have been put by Sun, Oracle et al into the platform itself.