doc file cleanup

CONTRIBUTING.md

@@ -5,6 +5,28 @@
 This doc is a short introduction on how to modify and maintain the sqlite3-ruby gem.
 
 
+## Architecture notes
+
+### Garbage collection
+
+All statements keep pointers back to their respective database connections.
+The `@connection` instance variable on the `Statement` handle keeps the database
+connection alive.  Memory allocated for a statement handler will be freed in
+two cases:
+
+1. `#close` is called on the statement
+2. The `SQLite3::Database` object gets garbage collected
+
+We can't free the memory for the statement in the garbage collection function
+for the statement handler.  The reason is because there exists a race
+condition.  We cannot guarantee the order in which objects will be garbage
+collected.  So, it is possible that a connection and a statement are up for
+garbage collection.  If the database connection were to be free'd before the
+statement, then boom.  Instead we'll be conservative and free unclosed
+statements when the connection is terminated.
+
+
+
 ## Building gems
 
 As a prerequisite please make sure you have `docker` correctly installed, so that you're able to cross-compile the native gems.

bin/test-gem-file-contents

@@ -94,14 +94,25 @@ describe File.basename(gemfile) do
   end
 
   describe "all platforms" do
-    ["lib", "test"].each do |dir|
+    ["lib"].each do |dir|
       it "contains every ruby file in #{dir}/" do
         expected = `git ls-files #{dir}`.split("\n").grep(/\.rb$/).sort
         skip "looks like this isn't a git repository" if expected.empty?
         actual = gemfile_contents.select { |f| f.start_with?("#{dir}/") }.grep(/\.rb$/).sort
         assert_equal(expected, actual)
       end
     end
+
+    ["test"].each do |dir|
+      it "does not contain files from #{dir}/" do
+        actual = gemfile_contents.select { |f| f.start_with?("#{dir}/") }.grep(/\.rb$/)
+        assert_empty(actual)
+      end
+    end
+
+    it "does not contain the Gemfile" do
+      refute_includes(gemfile_contents, "Gemfile")
+    end
   end
 
   if gemspec.platform == Gem::Platform::RUBY

rakelib/check-manifest.rake

@@ -17,6 +17,7 @@ task :check_manifest do
     pkg
     ports
     rakelib
+    test
     tmp
     vendor
     [0-9]*
@@ -26,7 +27,7 @@ task :check_manifest do
     .gitignore
     .rdoc_options
     .rubocop.yml
-    Gemfile?*
+    Gemfile*
     Rakefile
     [a-z]*.{log,out}
     [0-9]*

sqlite3.gemspec

@@ -37,12 +37,9 @@ Gem::Specification.new do |s|
 
   s.files = [
     ".gemtest",
-    "API_CHANGES.md",
     "CHANGELOG.md",
     "CONTRIBUTING.md",
-    "ChangeLog.cvs",
     "FAQ.md",
-    "Gemfile",
     "INSTALLATION.md",
     "LICENSE",
     "LICENSE-DEPENDENCIES",
@@ -69,32 +66,10 @@ Gem::Specification.new do |s|
     "lib/sqlite3/resultset.rb",
     "lib/sqlite3/statement.rb",
     "lib/sqlite3/value.rb",
-    "lib/sqlite3/version.rb",
-    "test/helper.rb",
-    "test/test_backup.rb",
-    "test/test_collation.rb",
-    "test/test_database.rb",
-    "test/test_database_flags.rb",
-    "test/test_database_readonly.rb",
-    "test/test_database_readwrite.rb",
-    "test/test_deprecated.rb",
-    "test/test_encoding.rb",
-    "test/test_integration.rb",
-    "test/test_integration_aggregate.rb",
-    "test/test_integration_open_close.rb",
-    "test/test_integration_pending.rb",
-    "test/test_integration_resultset.rb",
-    "test/test_integration_statement.rb",
-    "test/test_pragmas.rb",
-    "test/test_resource_cleanup.rb",
-    "test/test_result_set.rb",
-    "test/test_sqlite3.rb",
-    "test/test_statement.rb",
-    "test/test_statement_execute.rb"
+    "lib/sqlite3/version.rb"
   ]
 
   s.extra_rdoc_files = [
-    "API_CHANGES.md",
     "CHANGELOG.md",
     "README.md",
     "ext/sqlite3/aggregator.c",