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Merged
merged 3 commits into from
Mar 5, 2025
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IOFStreamMissingPositioning: Improve performance #860

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0b59317
A27-0-3: Improve performance
lcartey Feb 17, 2025
9edacca
Merge branch 'main' into lcartey/iofstream-performance
knewbury01 Mar 4, 2025
614c7ab
Update change_notes/2025-02-17-iofstream-performance.md
lcartey Mar 5, 2025
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2 changes: 2 additions & 0 deletions change_notes/2025-02-17-iofstream-performance.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
- `A27-0-3`, `FIO309-C`, `FIO50-CPP`, `RULE-30-0-2` - `InterleavedInputOutputWithoutFlush.ql`, `DoNotAlternatelyIOFromStreamWithoutPositioning.ql`, `InterleavedInputOutputWithoutPosition.ql`, `ReadsAndWritesOnStreamNotSeparatedByPositioning.ql`:
- Reduce evaluation time on complex codebases.
4 changes: 3 additions & 1 deletion ...src/codingstandards/cpp/rules/iofstreammissingpositioning/IOFstreamMissingPositioning.qll
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Expand Up @@ -57,17 +57,19 @@ predicate sameSource(FunctionCall a, FunctionCall b) {
sameFileSource(a, b)
}

bindingset[a, b]
predicate sameAccessDirection(ReadWriteCall a, ReadWriteCall b) {
a.getAccessDirection() = b.getAccessDirection()
}

bindingset[a, b]
predicate oppositeAccessDirection(ReadWriteCall a, ReadWriteCall b) {
not sameAccessDirection(a, b)
}

/**
* A write operation reaching a read and vice versa
* without intervening filepositioning
* without intervening file positioning calls.
*/
ControlFlowNode reachesInExOperator(ReadWriteCall op) {
result = op
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