tests: Add ptimer tests

Ptimer is a generic countdown timer helper that is used by many timer
device models as well as by the QEMU core. Add QTests for the ptimer.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Message-id: 1de89fe6e1ccaf6c8071ee3469e1a844df948359.1473252818.git.digetx@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 107 insertions, 0 deletions

diff --git a/tests/ptimer-test-stubs.c b/tests/ptimer-test-stubs.c
new file mode 100644
index 0000000000..92a22fbb09
--- /dev/null
+++ b/tests/ptimer-test-stubs.c
@@ -0,0 +1,107 @@
+/*
+ * Stubs for the ptimer-test
+ *
+ * Author: Dmitry Osipenko <digetx@gmail.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/main-loop.h"
+#include "sysemu/replay.h"
+
+#include "ptimer-test.h"
+
+struct QEMUBH {
+    QEMUBHFunc *cb;
+    void *opaque;
+};
+
+QEMUTimerListGroup main_loop_tlg;
+
+int64_t ptimer_test_time_ns;
+
+void timer_init_tl(QEMUTimer *ts,
+                   QEMUTimerList *timer_list, int scale,
+                   QEMUTimerCB *cb, void *opaque)
+{
+    ts->timer_list = timer_list;
+    ts->cb = cb;
+    ts->opaque = opaque;
+    ts->scale = scale;
+    ts->expire_time = -1;
+}
+
+void timer_mod(QEMUTimer *ts, int64_t expire_time)
+{
+    QEMUTimerList *timer_list = ts->timer_list;
+    QEMUTimer *t = &timer_list->active_timers;
+
+    while (t->next != NULL) {
+        if (t->next == ts) {
+            break;
+        }
+
+        t = t->next;
+    }
+
+    ts->expire_time = MAX(expire_time * ts->scale, 0);
+    ts->next = NULL;
+    t->next = ts;
+}
+
+void timer_del(QEMUTimer *ts)
+{
+    QEMUTimerList *timer_list = ts->timer_list;
+    QEMUTimer *t = &timer_list->active_timers;
+
+    while (t->next != NULL) {
+        if (t->next == ts) {
+            t->next = ts->next;
+            return;
+        }
+
+        t = t->next;
+    }
+}
+
+int64_t qemu_clock_get_ns(QEMUClockType type)
+{
+    return ptimer_test_time_ns;
+}
+
+int64_t qemu_clock_deadline_ns_all(QEMUClockType type)
+{
+    QEMUTimerList *timer_list = main_loop_tlg.tl[type];
+    QEMUTimer *t = timer_list->active_timers.next;
+    int64_t deadline = -1;
+
+    while (t != NULL) {
+        if (deadline == -1) {
+            deadline = t->expire_time;
+        } else {
+            deadline = MIN(deadline, t->expire_time);
+        }
+
+        t = t->next;
+    }
+
+    return deadline;
+}
+
+QEMUBH *qemu_bh_new(QEMUBHFunc *cb, void *opaque)
+{
+    QEMUBH *bh = g_new(QEMUBH, 1);
+
+    bh->cb = cb;
+    bh->opaque = opaque;
+
+    return bh;
+}
+
+void replay_bh_schedule_event(QEMUBH *bh)
+{
+    bh->cb(bh->opaque);
+}