diff options
Diffstat (limited to 'qemu-char.c')
| -rw-r--r-- | qemu-char.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/qemu-char.c b/qemu-char.c index fb456cec34..7a85b1f0b3 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -165,6 +165,7 @@ CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp) CharDriverState *chr = g_malloc0(sizeof(CharDriverState)); qemu_mutex_init(&chr->chr_write_lock); + chr->mux_idx = -1; if (backend->has_logfile) { int flags = O_WRONLY | O_CREAT; if (backend->has_logappend && @@ -738,17 +739,25 @@ static void mux_chr_update_read_handler(CharDriverState *chr, GMainContext *context) { MuxDriver *d = chr->opaque; + int idx; if (d->mux_cnt >= MAX_MUX) { fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n"); return; } - d->ext_opaque[d->mux_cnt] = chr->handler_opaque; - d->chr_can_read[d->mux_cnt] = chr->chr_can_read; - d->chr_read[d->mux_cnt] = chr->chr_read; - d->chr_event[d->mux_cnt] = chr->chr_event; + + if (chr->mux_idx == -1) { + chr->mux_idx = d->mux_cnt++; + } + + idx = chr->mux_idx; + d->ext_opaque[idx] = chr->handler_opaque; + d->chr_can_read[idx] = chr->chr_can_read; + d->chr_read[idx] = chr->chr_read; + d->chr_event[idx] = chr->chr_event; + /* Fix up the real driver with mux routines */ - if (d->mux_cnt == 0) { + if (d->mux_cnt == 1) { qemu_chr_add_handlers_full(d->drv, mux_chr_can_read, mux_chr_read, mux_chr_event, @@ -757,8 +766,7 @@ static void mux_chr_update_read_handler(CharDriverState *chr, if (d->focus != -1) { mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT); } - d->focus = d->mux_cnt; - d->mux_cnt++; + d->focus = idx; mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN); } |