Thread safety analysis: add two new attributes to the thread safety analysis:
assert_exclusive_lock and assert_shared_lock. These attributes are used to
mark functions that dynamically check (i.e. assert) that a lock is held.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@182170 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index d9b8e16..c365bfc 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -788,6 +788,34 @@
Attr.getAttributeSpellingListIndex()));
}
+static void handleAssertSharedLockAttr(Sema &S, Decl *D,
+ const AttributeList &Attr) {
+ SmallVector<Expr*, 1> Args;
+ if (!checkLockFunAttrCommon(S, D, Attr, Args))
+ return;
+
+ unsigned Size = Args.size();
+ Expr **StartArg = Size == 0 ? 0 : &Args[0];
+ D->addAttr(::new (S.Context)
+ AssertSharedLockAttr(Attr.getRange(), S.Context, StartArg, Size,
+ Attr.getAttributeSpellingListIndex()));
+}
+
+static void handleAssertExclusiveLockAttr(Sema &S, Decl *D,
+ const AttributeList &Attr) {
+ SmallVector<Expr*, 1> Args;
+ if (!checkLockFunAttrCommon(S, D, Attr, Args))
+ return;
+
+ unsigned Size = Args.size();
+ Expr **StartArg = Size == 0 ? 0 : &Args[0];
+ D->addAttr(::new (S.Context)
+ AssertExclusiveLockAttr(Attr.getRange(), S.Context,
+ StartArg, Size,
+ Attr.getAttributeSpellingListIndex()));
+}
+
+
static bool checkTryLockFunAttrCommon(Sema &S, Decl *D,
const AttributeList &Attr,
SmallVector<Expr*, 2> &Args) {
@@ -4918,6 +4946,12 @@
break;
// Thread safety attributes:
+ case AttributeList::AT_AssertExclusiveLock:
+ handleAssertExclusiveLockAttr(S, D, Attr);
+ break;
+ case AttributeList::AT_AssertSharedLock:
+ handleAssertSharedLockAttr(S, D, Attr);
+ break;
case AttributeList::AT_GuardedVar:
handleGuardedVarAttr(S, D, Attr);
break;