setminusage
setminusage |
Purpose
Sets the minimum usage (the minimum number of processing units used) of a resource between two time bounds. This routine can only be applied to resources of type
KALIS_DISCRETE_RESOURCE.
Synopsis
procedure setminusage(resource:cpresource, tmin:integer, tmax:integer, capa:integer)
Arguments
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resource
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the resource
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tmin
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lower bound of the time interval
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tmax
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upper bound of the time interval
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capa
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the minimum usage of processing units of resource in the interval [tmin,tmax]
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Example
The following example shows how to use setcapacity:
model "Resource capacity"
uses "kalis"
declarations
A, B, C : cptask ! Declaration of tasks
resource : cpresource ! Declaration of resource
end-declarations
setname(A,"A"); setname(B,"B"); setname(C,"C")
! The resource is a cumulative resource with maximum capacity 6
set_resource_attributes(resource, KALIS_DISCRETE_RESOURCE, 6)
! Setting the resource capacity in the interval 0..2 to 3
setcapacity(resource, 0, 2, 3)
! Setting the resource capacity in the interval 3..4 to 2
setcapacity(resource, 3, 4, 2)
! Setting the resource capacity in time period 5 to 1
setcapacity(resource, 5, 5, 1)
! Setting the task durations
set_task_attributes(A, 1)
set_task_attributes(B, 2)
set_task_attributes(C, 3)
! Setting the resource requirements of the tasks
requires(A, 1, resource)
requires(B, 2, resource)
requires(C, 3, resource)
! Find the optimal schedule (minimizing the makespan)
if cp_schedule(getmakespan) <> 0 then
cp_show_sol
else
writeln("no solution found")
end-if
end-model
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