Re: [jamboost] Semaphores

From: Vladimir Prus (ghost_at_[hidden])
Date: 2002-11-25 02:13:23

Rene Rivera wrote:
> [2002-11-22] Anichini, Steve wrote:
> 
>>Just a question out of curiosity - can the semaphore node have a count
>>greater than 1? For instance, say I wanted a semaphore node that allowed
>>only 2 simultaneous commands. Can't really think of a case where that would
>>be necessary, though, so maybe its academic.
> 
> 
> Here's a case... Say you have a compute intensive link step, I do and there
> was someone else (can't remember who right know) who has 10 minute links,
> and you happen to have a multiple CPU machine... It would be nice to be able
> to run two links at the same time to make use of the CPUs.

The extension that I'm integrating does not support this. Doing seems not 
hard, provided

1. Someone proposes an interface. Now we have

SEMAPHORE on $(<) = gcc-Link-semaphore ;

should this become

SEMAPHORE on $(<) = gcc-Link-semaphore 2 ;

?
2. Someone really needs this and pesters me to implement it ;-)

- Volodya