Fast allocator that dispenses heterogeneous blocks from dynamically allocated buffers.
Declared in <bdlma_sequentialallocator.h>
class SequentialAllocator
: public ManagedAllocatorThis class implements the ManagedAllocator protocol to provide a fast allocator that dispenses heterogeneous blocks of memory (of varying, user-specified sizes) from a sequence of dynamically-allocated buffers. Memory for the internal buffers is supplied by an (optional) allocator supplied at construction; if no allocator is supplied, the currently installed default allocator is used. If an allocation exceeds the remaining free memory space in the current buffer, the allocator replenishes its internal buffer with new memory to satisfy the request. This class is exception neutral: If memory cannot be allocated, the behavior is defined by the (optional) allocator specified at construction.
| Name | Description |
|---|---|
ManagedAllocator | Protocol for allocators that support releasing all allocated memory. |
| Name | Description |
|---|---|
size_type | Alias for an unsigned integral type capable of representing the number of bytes in this platform's virtual address space. |
| Name | Description |
|---|---|
SequentialAllocator [constructor] | Constructors |
~SequentialAllocator [destructor] [virtual] | Destroy this sequential allocator. All memory allocated from this allocator is released. |
operator= | |
allocate | allocate overloads |
allocateAndExpand | Return a block of at least *size bytes and load the actual size into *size. |
deallocate | This method has no effect; memory is managed by this allocator. |
deleteObject | deleteObject overloads |
deleteObjectRaw | deleteObjectRaw overloads |
is_equal | |
release [virtual] | Release all memory allocated through this allocator. |
reserveCapacity | Reserve enough memory to satisfy at least numBytes of allocations without replenishment. |
rewind [virtual] | Release allocated memory while retaining this allocator's typical internal buffers. |
truncate | Reduce the most recently allocated block at address from originalSize to newSize. |
| Name | Description |
|---|---|
throwBadAlloc | Throw std::bad_alloc or abort the program. |
| Name | Description |
|---|---|
do_allocate [virtual] | Return a newly allocated block of at least bytes with alignment. |
do_deallocate [virtual] | Return the memory block at p having bytes and alignment. |
do_is_equal [virtual] | Return whether this allocator can exchange memory with other. |