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gdbus: Fix atomic accesses to global name watch ID

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https://bugzilla.gnome.org/show_bug.cgi?id=777307
This commit is contained in:
Philip Withnall 2017-02-03 10:03:56 +00:00
parent b1f14143e5
commit c131865f57
1 changed files with 6 additions and 3 deletions
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9
gio/gdbusnamewatching.c
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@ -77,7 +77,10 @@ typedef struct
gboolean initialized;
} Client;
static guint next_global_id = 1;
/* Must be accessed atomically. */
static volatile guint next_global_id = 1;
/* Must be accessed with @lock held. */
static GHashTable *map_id_to_client = NULL;
static Client *
@ -562,7 +565,7 @@ g_bus_watch_name (GBusType bus_type,
client = g_new0 (Client, 1);
client->ref_count = 1;
client->id = next_global_id++; /* TODO: uh oh, handle overflow */
client->id = g_atomic_int_add (&next_global_id, 1); /* TODO: uh oh, handle overflow */
client->name = g_strdup (name);
client->flags = flags;
client->name_appeared_handler = name_appeared_handler;
@ -624,7 +627,7 @@ guint g_bus_watch_name_on_connection (GDBusConnection *connection,
client = g_new0 (Client, 1);
client->ref_count = 1;
client->id = next_global_id++; /* TODO: uh oh, handle overflow */
client->id = g_atomic_int_add (&next_global_id, 1); /* TODO: uh oh, handle overflow */
client->name = g_strdup (name);
client->flags = flags;
client->name_appeared_handler = name_appeared_handler;