ahci-test: Drop dependence on global_qtest

Managing parallel connections to two different monitors via
the implicit global_qtest makes it hard to copy-and-paste code
to tests that are not aware of the implicit state; the
management of global_qtest is even harder to follow because
it was masked behind set_context().

Instead, explicitly pass QTestState* around (generally, by
reusing the member already present in ahci->parent QOSState),
and call explicit qtest_* functions on all places that
interact with a monitor.

We can assert that the conversion is correct by checking that
global_qtest remains NULL throughout the test (a later patch
that changes global_qtest to not be a public global variable
will drop the assertions).

Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
[thuth: rebased patch to current master branch]
Signed-off-by: Thomas Huth <thuth@redhat.com>

2 files changed, 0 insertions, 10 deletions

diff --git a/tests/libqos/libqos.c b/tests/libqos/libqos.c
index 636a111a6f..d71557c5cb 100644
--- a/tests/libqos/libqos.c
+++ b/tests/libqos/libqos.c
@@ -73,11 +73,6 @@ void qtest_shutdown(QOSState *qs)
     }
 }
 
-void set_context(QOSState *s)
-{
-    global_qtest = s->qts;
-}
-
 static QDict *qmp_execute(QTestState *qts, const char *command)
 {
     return qtest_qmp(qts, "{ 'execute': %s }", command);
@@ -89,8 +84,6 @@ void migrate(QOSState *from, QOSState *to, const char *uri)
     QDict *rsp, *sub;
     bool running;
 
-    set_context(from);
-
     /* Is the machine currently running? */
     rsp = qmp_execute(from->qts, "query-status");
     g_assert(qdict_haskey(rsp, "return"));
@@ -114,7 +107,6 @@ void migrate(QOSState *from, QOSState *to, const char *uri)
     /* If we were running, we can wait for an event. */
     if (running) {
         migrate_allocator(&from->alloc, &to->alloc);
-        set_context(to);
         qtest_qmp_eventwait(to->qts, "RESUME");
         return;
     }
@@ -144,7 +136,6 @@ void migrate(QOSState *from, QOSState *to, const char *uri)
     }
 
     migrate_allocator(&from->alloc, &to->alloc);
-    set_context(to);
 }
 
 bool have_qemu_img(void)
diff --git a/tests/libqos/libqos.h b/tests/libqos/libqos.h
index 149b0be8bc..8e971c25a3 100644
--- a/tests/libqos/libqos.h
+++ b/tests/libqos/libqos.h
@@ -28,7 +28,6 @@ void qtest_shutdown(QOSState *qs);
 bool have_qemu_img(void);
 void mkimg(const char *file, const char *fmt, unsigned size_mb);
 void mkqcow2(const char *file, unsigned size_mb);
-void set_context(QOSState *s);
 void migrate(QOSState *from, QOSState *to, const char *uri);
 void prepare_blkdebug_script(const char *debug_fn, const char *event);
 void generate_pattern(void *buffer, size_t len, size_t cycle_len);