fb16dfecae
Commit b7f05445c0 has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.
This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.
Approved by: portmgr (tcberner)
23 lines
1.0 KiB
Plaintext
23 lines
1.0 KiB
Plaintext
Most C implementations of linked list are untyped. That is, their data carriers
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are typically void *. This is error prone since your compiler will not be able
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to help you correct your mistakes (oh, was it a pointer-to-a-pointer... I
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thought it was just a pointer...).
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tllist addresses this by using pre-processor macros to implement dynamic types,
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where the data carrier is typed to whatever you want; both primitive data types
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are supported as well as aggregated ones such as structs, enums and unions.
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Being a double-linked list, most operations are constant in time (including
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pushing and popping both to/from front and back).
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The memory overhead is fairly small; each item carries, besides its data, a
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prev and next pointer (i.e. a constant 16 byte overhead per item on 64-bit
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architectures).
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The list itself has two head and tail pointers, plus a length variable
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(typically 8 bytes on 64-bit architectures) to make list length lookup constant
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in time.
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Thus, assuming 64-bit pointers (and a 64-bit size_t type), the total overhead
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is 3*8 + n*2*8 bytes.
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