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vhost-user-scsi: simplify source handling 

Using a hashtable.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marc-André Lureau 2017-08-17 20:23:50 +02:00
parent 3e7bd3ad47
commit 7fb5a569a4
1 changed files with 12 additions and 33 deletions
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45
contrib/vhost-user-scsi/vhost-user-scsi.c
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@ -65,7 +65,7 @@ typedef struct VusDev {
VuDev vu_dev;
int server_sock;
GMainLoop *loop;
GTree *fdmap; /* fd -> gsource context id */
GHashTable *fdmap; /* fd -> gsource */
VusIscsiLun lun;
} VusDev;
@ -83,11 +83,6 @@ typedef struct vus_gsrc {
GPollFD gfd;
} vus_gsrc_t;
static gint vus_fdmap_compare(gconstpointer a, gconstpointer b)
{
return (b > a) - (b < a);
}
static gboolean vus_gsrc_prepare(GSource *src, gint *timeout)
{
assert(timeout);
@ -128,8 +123,8 @@ static GSourceFuncs vus_gsrc_funcs = {
NULL
};
static void vus_gsrc_new(VusDev *vdev_scsi, int fd, GIOCondition cond,
vu_watch_cb vu_cb, GSourceFunc gsrc_cb, gpointer data)
static GSource *vus_gsrc_new(VusDev *vdev_scsi, int fd, GIOCondition cond,
vu_watch_cb vu_cb, GSourceFunc gsrc_cb, gpointer data)
{
GSource *vus_gsrc;
vus_gsrc_t *vus_src;
@ -143,7 +138,6 @@ static void vus_gsrc_new(VusDev *vdev_scsi, int fd, GIOCondition cond,
vus_gsrc = g_source_new(&vus_gsrc_funcs, sizeof(vus_gsrc_t));
g_source_set_callback(vus_gsrc, (GSourceFunc) vu_cb, data, NULL);
vus_src = (vus_gsrc_t *)vus_gsrc;
vus_src->vdev_scsi = vdev_scsi;
vus_src->gfd.fd = fd;
vus_src->gfd.events = cond;
@ -154,8 +148,7 @@ static void vus_gsrc_new(VusDev *vdev_scsi, int fd, GIOCondition cond,
assert(id);
g_source_unref(vus_gsrc);
g_tree_insert(vdev_scsi->fdmap, (gpointer)(uintptr_t)fd,
(gpointer)(uintptr_t)id);
return vus_gsrc;
}
/** libiscsi integration **/
@ -348,43 +341,27 @@ static void vus_panic_cb(VuDev *vu_dev, const char *buf)
static void vus_add_watch_cb(VuDev *vu_dev, int fd, int vu_evt, vu_watch_cb cb,
void *pvt)
{
GSource *src;
VusDev *vdev_scsi;
guint id;
assert(vu_dev);
assert(fd >= 0);
assert(cb);
vdev_scsi = container_of(vu_dev, VusDev, vu_dev);
id = (guint)(uintptr_t)g_tree_lookup(vdev_scsi->fdmap,
(gpointer)(uintptr_t)fd);
if (id) {
GSource *vus_src = g_main_context_find_source_by_id(NULL, id);
assert(vus_src);
g_source_destroy(vus_src);
(void)g_tree_remove(vdev_scsi->fdmap, (gpointer)(uintptr_t)fd);
}
vus_gsrc_new(vdev_scsi, fd, vu_evt, cb, NULL, pvt);
src = vus_gsrc_new(vdev_scsi, fd, vu_evt, cb, NULL, pvt);
g_hash_table_replace(vdev_scsi->fdmap, GINT_TO_POINTER(fd), src);
}
static void vus_del_watch_cb(VuDev *vu_dev, int fd)
{
VusDev *vdev_scsi;
guint id;
assert(vu_dev);
assert(fd >= 0);
vdev_scsi = container_of(vu_dev, VusDev, vu_dev);
id = (guint)(uintptr_t)g_tree_lookup(vdev_scsi->fdmap,
(gpointer)(uintptr_t)fd);
if (id) {
GSource *vus_src = g_main_context_find_source_by_id(NULL, id);
assert(vus_src);
g_source_destroy(vus_src);
(void)g_tree_remove(vdev_scsi->fdmap, (gpointer)(uintptr_t)fd);
}
g_hash_table_remove(vdev_scsi->fdmap, GINT_TO_POINTER(fd));
}
static void vus_proc_req(VuDev *vu_dev, int idx)
@ -540,7 +517,7 @@ static void vdev_scsi_free(VusDev *vdev_scsi)
close(vdev_scsi->server_sock);
}
g_main_loop_unref(vdev_scsi->loop);
g_tree_destroy(vdev_scsi->fdmap);
g_hash_table_unref(vdev_scsi->fdmap);
g_free(vdev_scsi);
}
@ -551,7 +528,9 @@ static VusDev *vdev_scsi_new(int server_sock)
vdev_scsi = g_new0(VusDev, 1);
vdev_scsi->server_sock = server_sock;
vdev_scsi->loop = g_main_loop_new(NULL, FALSE);
vdev_scsi->fdmap = g_tree_new(vus_fdmap_compare);
vdev_scsi->fdmap =
g_hash_table_new_full(NULL, NULL, NULL,
(GDestroyNotify) g_source_destroy);
return vdev_scsi;
}