Add a way to cleanly shut down the library (#578)

This change adds the Shutdown() method, so that the library can be
cleanly shut down. This helps significanly reduce the amount of noise in
the leak detector.

1 files changed, 10 insertions, 0 deletions

diff --git a/git.go b/git.go
index 0459dde..bd01b6d 100644
--- a/git.go
+++ b/git.go
@@ -139,6 +139,16 @@ func init() {
 	C.git_openssl_set_locking()
 }
 
+// Shutdown frees all the resources acquired by libgit2. Make sure no
+// references to any git2go objects are live before calling this.
+// After this is called, invoking any function from this library will result in
+// undefined behavior, so make sure this is called carefully.
+func Shutdown() {
+	pointerHandles.Clear()
+
+	C.git_libgit2_shutdown()
+}
+
 // Oid represents the id for a Git object.
 type Oid [20]byte