51 lines
1.4 KiB
Text
51 lines
1.4 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{ContiguousBlockAllocator}
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for better handling of dynamic allocation@section{related}
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Classes/Server, Classes/PowerOfTwoAllocator
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@section{categories}
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Control
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@section{description}
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A more robust replacement for the default server block allocator, link::Classes/PowerOfTwoAllocator::. May be used in the link::Classes/Server:: class to allocate audio/control bus numbers and buffer numbers.
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To configure a server to use ContiguousBlockAllocator, execute the following:
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@racketblock[
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aServer.options.blockAllocClass = ContiguousBlockAllocator;
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::
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Normally you will not need to address the allocators directly. However, ContiguousBlockAllocator adds one feature not present in PowerOfTwoAllocator, namely the emphasis::reserve:: method.
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]
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@section{ClassMethods}
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@section{method}
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new
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Create a new allocator with emphasis::size:: slots. You may block off the first emphasis::pos:: slots (the server's audioBusAllocator does this to reserve the hardware input and output buses).
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@section{InstanceMethods}
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@section{private}
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prReserve, prSplit
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@section{method}
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alloc
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Return the starting index of a free block that is emphasis::n:: slots wide. The default is 1 slot.
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@section{method}
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free
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Free a previously allocated block starting at emphasis::address::.
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@section{method}
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reserve
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Mark a specific range of addresses as used so that the alloc method will not return any addresses within that range.
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