From 4241dd5673566a61add85bd9eb52d4ae7db2750a Mon Sep 17 00:00:00 2001
From: Justus Winter <4winter@informatik.uni-hamburg.de>
Date: Sat, 23 Nov 2013 16:12:55 +0100
Subject: libports: use protected payloads to optimize the object lookup

* NEWS: Mention protected payloads.
* libports/Makefile (SRCS): Add `port-deref-deferred.c'.
* libports/create-internal.c (_ports_create_port_internal): Set the
protected payload to the objects address.
* libports/import-port.c (ports_import_port): Likewise.
* libports/reallocate-from-external.c (ports_reallocate_from_external):
Likewise.
* libports/reallocate-port.c (ports_reallocate_port): Likewise.
* libports/transfer-right.c (ports_transfer_right): Likewise.
* libports/manage-multithread.c (ports_manage_port_operations_multithread):
Use the protected payload for the object lookup if provided.  Add
thread pool management calls.
* libports/manage-one-thread.c (ports_manage_port_operations_one_thread):
Likewise.
* libports/destroy-right.c (ports_destroy_right): Defer the
dereferencing of outstanding send rights to avoid a port_info
use-after-free.
* libports/port-deref-deferred.c: New file.
* libports/port-deref-deferred.h: Likewise.
* libports/ports.h (struct port_bucket): New field `threadpool'.
(ports_lookup_payload): Check `port_right'.
---
 libports/create-bucket.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'libports/create-bucket.c')

diff --git a/libports/create-bucket.c b/libports/create-bucket.c
index 2c5f1b65..82c00a4b 100644
--- a/libports/create-bucket.c
+++ b/libports/create-bucket.c
@@ -48,5 +48,6 @@ ports_create_bucket ()
 
   hurd_ihash_init (&ret->htable, offsetof (struct port_info, hentry));
   ret->rpcs = ret->flags = ret->count = 0;
+  _ports_threadpool_init (&ret->threadpool);
   return ret;
 }
-- 
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