X-Git-Url: http://git.vrable.net/?a=blobdiff_plain;f=bluesky%2Fstore.c;h=b60bd053c7911a256dc4fe47c0b1173cf60dd84e;hb=4273ee04bdd5d6920d3ff0e5db488b8a2ddab249;hp=52cc6b356d5116f5d3d881b07ff36ddab5979c5d;hpb=0325ee9e9afb02b08bdec3497e8cc54cb942989d;p=bluesky.git

diff --git a/bluesky/store.c b/bluesky/store.c
index 52cc6b3..b60bd05 100644
--- a/bluesky/store.c
+++ b/bluesky/store.c
@@ -14,7 +14,8 @@
 
 /* Interaction with cloud storage.  We expose very simple GET/PUT style
  * interface, which different backends can implement.  Available backends
- * (will) include Amazon S3 and a simple local store for testing purposes. */
+ * (will) include Amazon S3 and a simple local store for testing purposes.
+ * Operations may be performed asynchronously. */
 
 struct _BlueSkyStore {
     const BlueSkyStoreImplementation *impl;
@@ -53,17 +54,115 @@ void bluesky_store_free(BlueSkyStore *store)
     g_free(store);
 }
 
+BlueSkyStoreAsync *bluesky_store_async_new(BlueSkyStore *store)
+{
+    BlueSkyStoreAsync *async;
+
+    async = g_new(BlueSkyStoreAsync, 1);
+    async->store = store;
+    async->lock = g_mutex_new();
+    async->completion_cond = g_cond_new();
+    async->refcount = 1;
+    async->status = ASYNC_NEW;
+    async->op = STORE_OP_NONE;
+    async->key = NULL;
+    async->data = NULL;
+    async->result = -1;
+    async->store_private = NULL;
+
+    return async;
+}
+
+void bluesky_store_async_ref(BlueSkyStoreAsync *async)
+{
+    if (async == NULL)
+        return;
+
+    g_atomic_int_inc(&async->refcount);
+}
+
+void bluesky_store_async_unref(BlueSkyStoreAsync *async)
+{
+    if (async == NULL)
+        return;
+
+    if (g_atomic_int_dec_and_test(&async->refcount)) {
+        async->store->impl->cleanup(async->store->handle, async);
+        g_mutex_free(async->lock);
+        g_cond_free(async->completion_cond);
+        g_free(async->key);
+        bluesky_string_unref(async->data);
+        g_free(async);
+        g_print("Freed async\n");
+    }
+}
+
+/* Block until the given operation has completed. */
+void bluesky_store_async_wait(BlueSkyStoreAsync *async)
+{
+    g_return_if_fail(async != NULL);
+    g_mutex_lock(async->lock);
+
+    if (async->status == ASYNC_NEW) {
+        g_error("bluesky_store_async_wait on a new async object!\n");
+        g_mutex_unlock(async->lock);
+        return;
+    }
+
+    while (async->status != ASYNC_COMPLETE) {
+        g_cond_wait(async->completion_cond, async->lock);
+    }
+
+    g_mutex_unlock(async->lock);
+}
+
+/* Mark an asynchronous operation as complete.  This should only be called by
+ * the store implementations.  The lock must be held when calling this
+ * function. */
+void bluesky_store_async_mark_complete(BlueSkyStoreAsync *async)
+{
+    async->status = ASYNC_COMPLETE;
+    g_cond_broadcast(async->completion_cond);
+}
+
+void bluesky_store_async_submit(BlueSkyStoreAsync *async)
+{
+    BlueSkyStore *store = async->store;
+
+    store->impl->submit(store->handle, async);
+}
+
+/* Convenience wrappers that perform a single operation synchronously. */
 BlueSkyRCStr *bluesky_store_get(BlueSkyStore *store, const gchar *key)
 {
-    return store->impl->get(store->handle, key);
+    BlueSkyStoreAsync *async = bluesky_store_async_new(store);
+    async->op = STORE_OP_GET;
+    async->key = g_strdup(key);
+    bluesky_store_async_submit(async);
+
+    bluesky_store_async_wait(async);
+
+    BlueSkyRCStr *data = async->data;
+    bluesky_string_ref(data);
+    bluesky_store_async_unref(async);
+    return data;
 }
 
 void bluesky_store_put(BlueSkyStore *store,
                        const gchar *key, BlueSkyRCStr *val)
 {
-    store->impl->put(store->handle, key, val);
+    BlueSkyStoreAsync *async = bluesky_store_async_new(store);
+    async->op = STORE_OP_PUT;
+    async->key = g_strdup(key);
+    bluesky_string_ref(val);
+    async->data = val;
+    bluesky_store_async_submit(async);
+
+    bluesky_store_async_wait(async);
+    bluesky_store_async_unref(async);
 }
 
+#if 0
 /* Simple in-memory data store for test purposes. */
 typedef struct {
     GMutex *lock;
@@ -145,10 +244,11 @@ static BlueSkyStoreImplementation filestore_impl = {
     .get = filestore_get,
     .put = filestore_put,
 };
+#endif
 
 void bluesky_store_init()
 {
     store_implementations = g_hash_table_new(g_str_hash, g_str_equal);
-    bluesky_store_register(&memstore_impl, "mem");
-    bluesky_store_register(&filestore_impl, "file");
+    //bluesky_store_register(&memstore_impl, "mem");
+    //bluesky_store_register(&filestore_impl, "file");
 }