The bitfield is stored as an array of 32 bits words on the heap. However, if the bitfield is smaller than 33 bits, it is stored inline. Test(), Set() and Clear() are "unsafe" in the sense that they won't check the input parameter (wether or not the bit requested is in or out the bitfield), so be careful when using those methods.
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Public Member Functions |
| void | Clear (size_t bit) |
| | This call doesn't make sure that bit is valid.
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| status_t | Clear (size_t start, size_t len) |
| | Clear several continuous bits in the bitfield.
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| size_t | CountBits () const |
| | Return current # bits in bitfield.
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| ssize_t | FirstClear () const |
| | Search for the first bit cleared in the bitfield.
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| ssize_t | FirstSet () const |
| | Search for the first bit set in the bitfield.
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| status_t | InitCheck () const |
| | B_NO_MEMORY if the bitfield couldn't be allocated.
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| bool | operator== (const SBitfield &other) |
| | Compare 2 bitfields.
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| bool | operator[] (size_t bit) const |
| bitfield_bit | operator[] (size_t bit) |
| | Read or write the bitfield as an array.
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| status_t | Resize (size_t bits) |
| | Change the size of the bitfield.
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| | SBitfield (const SBitfield ©) |
| | SBitfield (size_t size, bool intial) |
| | Contruct a bitfield of size bits, initialize all values to initial.
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| | SBitfield (size_t size=0) |
| | Contruct a bitfield of size bits.
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| void | Set (size_t bit) |
| | This call doesn't make sure that bit is valid.
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| status_t | Set (size_t start, size_t len) |
| | Set several continuous bits in the bitfield.
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| bool | Test (size_t bit) const |
| | Test a bit in the bitfield This call doesn't make sure that bit is valid.
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| bool | TestAndSet (size_t bit) |
| | Set a bit in the bitfield, returning its old value This call doesn't make sure that bit is valid.
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| | ~SBitfield () |
Friends |
| struct | bitfield_bit |
Classes |
| struct | bitfield_bit |
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