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Implement Concurrency7 package #799

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MichaelRFairhurst
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Description

please enter the description of your change here

Change request type

  • Release or process automation (GitHub workflows, internal scripts)
  • Internal documentation
  • External documentation
  • Query files (.ql, .qll, .qls or unit tests)
  • External scripts (analysis report or other code shipped as part of a release)

Rules with added or modified queries

  • No rules added
  • Queries have been added for the following rules:
    • RULE-9-7
    • RULE-21-26
  • Queries have been modified for the following rules:
    • rule number here

Release change checklist

A change note (development_handbook.md#change-notes) is required for any pull request which modifies:

  • The structure or layout of the release artifacts.
  • The evaluation performance (memory, execution time) of an existing query.
  • The results of an existing query in any circumstance.

If you are only adding new rule queries, a change note is not required.

Author: Is a change note required?

  • Yes
  • No

🚨🚨🚨
Reviewer: Confirm that format of shared queries (not the .qll file, the
.ql file that imports it) is valid by running them within VS Code.

  • Confirmed

Reviewer: Confirm that either a change note is not required or the change note is required and has been added.

  • Confirmed

Query development review checklist

For PRs that add new queries or modify existing queries, the following checklist should be completed by both the author and reviewer:

Author

  • Have all the relevant rule package description files been checked in?
  • Have you verified that the metadata properties of each new query is set appropriately?
  • Do all the unit tests contain both "COMPLIANT" and "NON_COMPLIANT" cases?
  • Are the alert messages properly formatted and consistent with the style guide?
  • Have you run the queries on OpenPilot and verified that the performance and results are acceptable?
    As a rule of thumb, predicates specific to the query should take no more than 1 minute, and for simple queries be under 10 seconds. If this is not the case, this should be highlighted and agreed in the code review process.
  • Does the query have an appropriate level of in-query comments/documentation?
  • Have you considered/identified possible edge cases?
  • Does the query not reinvent features in the standard library?
  • Can the query be simplified further (not golfed!)

Reviewer

  • Have all the relevant rule package description files been checked in?
  • Have you verified that the metadata properties of each new query is set appropriately?
  • Do all the unit tests contain both "COMPLIANT" and "NON_COMPLIANT" cases?
  • Are the alert messages properly formatted and consistent with the style guide?
  • Have you run the queries on OpenPilot and verified that the performance and results are acceptable?
    As a rule of thumb, predicates specific to the query should take no more than 1 minute, and for simple queries be under 10 seconds. If this is not the case, this should be highlighted and agreed in the code review process.
  • Does the query have an appropriate level of in-query comments/documentation?
  • Have you considered/identified possible edge cases?
  • Does the query not reinvent features in the standard library?
  • Can the query be simplified further (not golfed!)

not isExcluded(sink.getNode().asExpr(),
Concurrency7Package::timedlockOnInappropriateMutexTypeQuery()) and
Flow::flowPath(source, sink)
select sink.getNode(), source, sink, "Call to mtx_timedlock with mutex not of type 'mtx_timed'."
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Add a message link to the source - perhaps make the link mutex in the message? Otherwise users have to know to click into the path viewer in GitHub to see the source.

Expr mutexTypeExpr;

MutexInitCall() {
getTarget().hasName("mtx_init") and
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Could mtx_init be a macro?

exists(AddressOfExpr addrOf |
getArgument(0) = addrOf and
addrOf.getOperand() = addressedExpr and
getTarget().getName() = "__c11_atomic_init"
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Is this name required by the standard? If not, we need to confirm it's used by all our supported compilers, or use a different approach (identify the function call wrapped by the macro atomic_init?)

exists(ControlFlowNode missingInitPoint |
missingInitPoint = getARequiredInitializationPoint(v) and
not exists(AtomicInitAddressOfExpr initialization |
initialization.getAddressedExpr().(VariableAccess).getTarget() = v and
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Do we need to consider non-local initialization? e.g. a function that takes the address and initializes the variable?

},
"queries": [
{
"description": "Atomic objects that do not have static storage duration shall be initialized with a value or by using 'atomic_init()'.",
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Consider adding an implementation_scope for this rule.

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