1 files changed, 66 insertions, 0 deletions
diff --git a/lib/nghttp3_tnode.h b/lib/nghttp3_tnode.h
new file mode 100644
index 0000000..f97120a
--- /dev/null
+++ b/lib/nghttp3_tnode.h
@@ -0,0 +1,66 @@
+/*
+ * nghttp3
+ *
+ * Copyright (c) 2019 nghttp3 contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP3_TNODE_H
+#define NGHTTP3_TNODE_H
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp3/nghttp3.h>
+
+#include "nghttp3_pq.h"
+
+#define NGHTTP3_TNODE_MAX_CYCLE_GAP (1llu << 24)
+
+typedef struct nghttp3_tnode {
+  nghttp3_pq_entry pe;
+  size_t num_children;
+  int64_t id;
+  uint64_t cycle;
+  /* pri is a stream priority produced by nghttp3_pri_to_uint8. */
+  uint8_t pri;
+} nghttp3_tnode;
+
+void nghttp3_tnode_init(nghttp3_tnode *tnode, int64_t id, uint8_t pri);
+
+void nghttp3_tnode_free(nghttp3_tnode *tnode);
+
+void nghttp3_tnode_unschedule(nghttp3_tnode *tnode, nghttp3_pq *pq);
+
+/*
+ * nghttp3_tnode_schedule schedules |tnode| using |nwrite| as penalty.
+ * If |tnode| has already been scheduled, it is rescheduled by the
+ * amount of |nwrite|.
+ */
+int nghttp3_tnode_schedule(nghttp3_tnode *tnode, nghttp3_pq *pq,
+                           uint64_t nwrite);
+
+/*
+ * nghttp3_tnode_is_scheduled returns nonzero if |tnode| is scheduled.
+ */
+int nghttp3_tnode_is_scheduled(nghttp3_tnode *tnode);
+
+#endif /* NGHTTP3_TNODE_H */