1 files changed, 54 insertions, 0 deletions
diff --git a/include/haproxy/pipe.h b/include/haproxy/pipe.h
new file mode 100644
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--- /dev/null
+++ b/include/haproxy/pipe.h
@@ -0,0 +1,54 @@
+/*
+ * include/haproxy/pipe.h
+ * Pipe management - exported functions
+ *
+ * Copyright (C) 2000-2020 Willy Tarreau - w@1wt.eu
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, version 2.1
+ * exclusively.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef _HAPROXY_PIPE_H
+#define _HAPROXY_PIPE_H
+
+#include <haproxy/api.h>
+#include <haproxy/pipe-t.h>
+
+extern int pipes_used;	/* # of pipes in use (2 fds each) */
+extern int pipes_free;	/* # of pipes unused (2 fds each) */
+
+/* return a pre-allocated empty pipe. Try to allocate one if there isn't any
+ * left. NULL is returned if a pipe could not be allocated.
+ */
+struct pipe *get_pipe();
+
+/* destroy a pipe, possibly because an error was encountered on it. Its FDs
+ * will be closed and it will not be reinjected into the live pool.
+ */
+void kill_pipe(struct pipe *p);
+
+/* put back a unused pipe into the live pool. If it still has data in it, it is
+ * closed and not reinjected into the live pool. The caller is not allowed to
+ * use it once released.
+ */
+void put_pipe(struct pipe *p);
+
+#endif /* _HAPROXY_PIPE_H */
+
+/*
+ * Local variables:
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ * End:
+ */