struct _BlueSkyStore {
const BlueSkyStoreImplementation *impl;
gpointer handle;
+
+ GMutex *lock;
+ GCond *cond_idle;
+ int pending; /* Count of operations not yet complete. */
};
GHashTable *store_implementations;
BlueSkyStore *store = g_new(BlueSkyStore, 1);
store->impl = impl;
store->handle = handle;
+ store->lock = g_mutex_new();
+ store->cond_idle = g_cond_new();
+ store->pending = 0;
return store;
}
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;
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)
{
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
* function. */
void bluesky_store_async_mark_complete(BlueSkyStoreAsync *async)
{
+ if (async->status != ASYNC_COMPLETE) {
+ g_mutex_lock(async->store->lock);
+ async->store->pending--;
+ if (async->store->pending == 0)
+ g_cond_broadcast(async->store->cond_idle);
+ g_mutex_unlock(async->store->lock);
+ }
+
async->status = ASYNC_COMPLETE;
g_cond_broadcast(async->completion_cond);
}
+void bluesky_store_async_submit(BlueSkyStoreAsync *async)
+{
+ BlueSkyStore *store = async->store;
+
+ g_mutex_lock(async->store->lock);
+ async->store->pending++;
+ g_mutex_unlock(async->store->lock);
+
+ store->impl->submit(store->handle, async);
+
+ if (bluesky_options.synchronous_stores)
+ bluesky_store_async_wait(async);
+}
+
+void bluesky_store_sync(BlueSkyStore *store)
+{
+ g_mutex_lock(store->lock);
+ g_print("Waiting for pending store operations to complete...\n");
+ while (store->pending > 0) {
+ g_cond_wait(store->cond_idle, store->lock);
+ }
+ g_mutex_unlock(store->lock);
+ g_print("Operations are complete.\n");
+}
+
/* Convenience wrappers that perform a single operation synchronously. */
BlueSkyRCStr *bluesky_store_get(BlueSkyStore *store, const gchar *key)
{
BlueSkyStoreAsync *async = bluesky_store_async_new(store);
async->op = STORE_OP_GET;
async->key = g_strdup(key);
- store->impl->submit(store->handle, async);
+ 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;
}
async->key = g_strdup(key);
bluesky_string_ref(val);
async->data = val;
- store->impl->submit(store->handle, async);
+ bluesky_store_async_submit(async);
bluesky_store_async_wait(async);
+ bluesky_store_async_unref(async);
}
#if 0