terminal3270: do not use backend timer sources

terminal3270 uses the front-end side of the chardev. It shouldn't
create sources from backend side context (with backend
functions).

send_timing_mark_cb calls qemu_chr_fe_write_all() which should be
thread safe.

This partially reverts changes from commit
2c716ba1506769c9be2caa02f0f6d6e7c00f4304.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20190206174328.9736-4-marcandre.lureau@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/hw/char/terminal3270.c b/hw/char/terminal3270.c
index e9c45e55b1412dcb53af10e86a18f10701bb2ad0..35b079d5c4bc8dc46ce8bafe2df745bf2c095d98 100644 (file)
--- a/hw/char/terminal3270.c
+++ b/hw/char/terminal3270.c
@@ -31,7 +31,7 @@ typedef struct Terminal3270 {
     uint8_t outv[OUTPUT_BUFFER_SIZE];
     int in_len;
     bool handshake_done;
-    GSource *timer_src;
+    guint timer_tag;
 } Terminal3270;
 
 #define TYPE_TERMINAL_3270 "x-terminal3270"
@@ -47,10 +47,9 @@ static int terminal_can_read(void *opaque)
 
 static void terminal_timer_cancel(Terminal3270 *t)
 {
-    if (t->timer_src) {
-        g_source_destroy(t->timer_src);
-        g_source_unref(t->timer_src);
-        t->timer_src = NULL;
+    if (t->timer_tag) {
+        g_source_remove(t->timer_tag);
+        t->timer_tag = 0;
     }
 }
 
@@ -100,8 +99,7 @@ static void terminal_read(void *opaque, const uint8_t *buf, int size)
     assert(size <= (INPUT_BUFFER_SIZE - t->in_len));
 
     terminal_timer_cancel(t);
-    t->timer_src = qemu_chr_timeout_add_ms(t->chr.chr, 600 * 1000,
-                                           send_timing_mark_cb, t);
+    t->timer_tag = g_timeout_add_seconds(600, send_timing_mark_cb, t);
     memcpy(&t->inv[t->in_len], buf, size);
     t->in_len += size;
     if (t->in_len < 2) {
@@ -160,8 +158,7 @@ static void chr_event(void *opaque, int event)
          * char-socket.c. Once qemu receives the terminal-type of the
          * client, mark handshake done and trigger everything rolling again.
          */
-        t->timer_src = qemu_chr_timeout_add_ms(t->chr.chr, 600 * 1000,
-                                               send_timing_mark_cb, t);
+        t->timer_tag = g_timeout_add_seconds(600, send_timing_mark_cb, t);
         break;
     case CHR_EVENT_CLOSED:
         sch->curr_status.scsw.dstat = SCSW_DSTAT_DEVICE_END;