Release the whole amount

[Enchufa2]

We should be able to do this:

t0 <- create_trajectory() %>%
  seize("dummy", 3) %>%
  timeout(1) %>%
  release("dummy") # releases 3

And, of course, this:

t0 <- create_trajectory() %>%
  seize("dummy", 3) %>%
  timeout(1) %>%
  release("dummy", 1) %>% # releases 1
  timeout(1) %>% 
  release("dummy") # releases 2

[Bart6114]

+1

Simple shortcut off the top of my head; save the seized number as an attribute with an uncommon prefix. In the first example above set e.g. an attribute ___seized__dummy with value 3 (in the background of-course). This can then be easily retrieved to release the correct amount. This does however incur an overhead (if you want to increment the seized amount you have to pass the attributes to the R side). Depending on the overhead incurred by monitoring the seized amount (in this shortcut style or by a robust c++ implementation), maybe only allow this from a given monitoring level.

In terms of syntax, it might require a different command like release_all(resource). As seize(resource) defaults to an amount of 1 it isn't unlogical that release(resource) also defaults to an amount of 1.

[Enchufa2]

I have plans for this. 😉 It should be managed by the resource itself. So I think it is best to reimplement the resource's server as a map of arrivals.

[Bart6114]

Any educated guesses on how this would impact the run-time of larger simulations?

[Enchufa2]

It should be minimal because a map is similar to a hash table. It will be even smaller when we use an unordered_map from Boost or C++11 (this is in the TODO list).

[Enchufa2]

This is a good time to reopen this, because the enhancements implemented in the last year provide the required infrastructure to address it trivially.

Instead of changing release("resource") and release_selected()'s default amount, one solution would be to create another couple of verbs, release_all("resource") and release_selected_all(). But maybe release_all() is more intuitive for releasing the whole amount in every resource seized, which would be a nice addition too. For instance:

traj <- trajectory() %>%
  seize("dummy1", 3) %>%
  seize("dummy2") %>%
  timeout(1) %>%
  release_all()

Feelings, @Bart6114?