20 General utilities library [utilities]

20.12 Memory resources [mem.res]

20.12.6 Class monotonic_­buffer_­resource [mem.res.monotonic.buffer]

20.12.6.1 Constructors and destructor [mem.res.monotonic.buffer.ctor]

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explicit monotonic_buffer_resource(memory_resource* upstream); monotonic_buffer_resource(size_t initial_size, memory_resource* upstream);
1
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Preconditions: upstream is the address of a valid memory resource.
initial_­size, if specified, is greater than zero.
2
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Effects: Sets upstream_­rsrc to upstream and current_­buffer to nullptr.
If initial_­size is specified, sets next_­buffer_­size to at least initial_­size; otherwise sets next_­buffer_­size to an implementation-defined size.
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monotonic_buffer_resource(void* buffer, size_t buffer_size, memory_resource* upstream);
3
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Preconditions: upstream is the address of a valid memory resource.
buffer_­size is no larger than the number of bytes in buffer.
4
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Effects: Sets upstream_­rsrc to upstream, current_­buffer to buffer, and next_­buffer_­size to buffer_­size (but not less than 1), then increases next_­buffer_­size by an implementation-defined growth factor (which need not be integral).
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~monotonic_buffer_resource();
5
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Effects: Calls release().