Make sure SQLiteStatement objects get destroyed before the database is closed

[Chris Dumez]

Make sure SQLiteStatement objects get destroyed before the database is closed. There are 2 issues with destroying a SQLiteStatement after a database is closed:
1. The underlying call to close the sqlite database will fail if the database still has statements and we will leak the database.
2. SQLiteStatement has a reference to the database so it cannot outlive the SQLiteDatabase.

[Chris Dumez]

Created attachment 428862 [details]
Patch

[Chris Dumez]

Created attachment 428910 [details]
Patch

[Darin Adler]

Comment on attachment 428910 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=428910&action=review

> Source/WebCore/platform/sql/SQLiteDatabase.cpp:225
> +        ASSERT_WITH_MESSAGE(!m_statementCount, "All SQLiteTransaction objects should be destroyed before closing the database");

"should" -> "must"

> Source/WebCore/platform/sql/SQLiteDatabase.cpp:727
> +void SQLiteDatabase::incrementStatementCount()
> +{
> +#if ASSERT_ENABLED
> +    ++m_statementCount;
> +#endif
> +}
> +
> +void SQLiteDatabase::decrementStatementCount()
> +{
> +#if ASSERT_ENABLED
> +    ASSERT(m_statementCount);
> +    --m_statementCount;
> +#endif
> +}

When asserts are disabled you’d want this empty function inlined. Can we put these in the header?

[Chris Dumez]

Created attachment 428935 [details]
Patch

[EWS]

Committed r277653 (237859@main): <https://commits.webkit.org/237859@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 428935 [details].

[Radar WebKit Bug Importer]

<rdar://problem/78156408>