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| author | Justus Winter <4winter@informatik.uni-hamburg.de> | 2013-11-23 16:12:55 +0100 |
|---|---|---|
| committer | Justus Winter <4winter@informatik.uni-hamburg.de> | 2015-04-07 14:23:36 +0200 |
| commit | 4241dd5673566a61add85bd9eb52d4ae7db2750a (patch) | |
| tree | 0c7ce8514067068a877d8181544c2870af1dac7d /libports/ports.h | |
| parent | 785f4aea18b5705e63609001d2aa12871a774804 (diff) | |
| download | hurd-4241dd5673566a61add85bd9eb52d4ae7db2750a.tar.gz hurd-4241dd5673566a61add85bd9eb52d4ae7db2750a.tar.bz2 hurd-4241dd5673566a61add85bd9eb52d4ae7db2750a.zip | |
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'.
Diffstat (limited to 'libports/ports.h')
| -rw-r--r-- | libports/ports.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libports/ports.h b/libports/ports.h index f02edb42..9299bc40 100644 --- a/libports/ports.h +++ b/libports/ports.h @@ -29,6 +29,8 @@ #include <pthread.h> #include <refcount.h> +#include "port-deref-deferred.h" + #ifdef PORTS_DEFINE_EI #define PORTS_EI #else @@ -73,6 +75,7 @@ struct port_bucket int rpcs; int flags; int count; + struct ports_threadpool threadpool; }; /* FLAGS above are the following: */ #define PORT_BUCKET_INHIBITED PORTS_INHIBITED @@ -262,6 +265,9 @@ ports_lookup_payload (struct port_bucket *bucket, { struct port_info *pi = (struct port_info *) payload; + if (pi && ! MACH_PORT_VALID (pi->port_right)) + pi = NULL; + if (pi && bucket && pi->bucket != bucket) pi = NULL; |