X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu-pointer.h;h=dd64ec4128fadb2f7b39971a0d975c891c0a6013;hp=d3718b020e070d95724db18513c022d784a136a0;hb=a641253675b6005329234c0c7354b88dea7a4245;hpb=2ff1db4a7825af40f327413305de6f9955af0e35 diff --git a/urcu-pointer.h b/urcu-pointer.h index d3718b0..dd64ec4 100644 --- a/urcu-pointer.h +++ b/urcu-pointer.h @@ -6,7 +6,7 @@ * * Userspace RCU header. Operations on pointers. * - * Copyright (c) 2009 Mathieu Desnoyers + * Copyright (c) 2009 Mathieu Desnoyers * Copyright (c) 2009 Paul E. McKenney, IBM Corporation. * * This library is free software; you can redistribute it and/or @@ -28,11 +28,15 @@ #include #include -#include +#include + +#ifdef __cplusplus +extern "C" { +#endif #ifdef _LGPL_SOURCE -#include +#include /* * rcu_dereference(ptr) @@ -63,32 +67,41 @@ extern void *rcu_dereference_sym(void *p); #define rcu_dereference(p) \ ({ \ - typeof(p) _________p1 = \ - rcu_dereference_sym((void *)(p)); \ + typeof(p) _________p1 = URCU_FORCE_CAST(typeof(p), \ + rcu_dereference_sym(URCU_FORCE_CAST(void *, p))); \ (_________p1); \ }) extern void *rcu_cmpxchg_pointer_sym(void **p, void *old, void *_new); #define rcu_cmpxchg_pointer(p, old, _new) \ ({ \ - typeof(*p) _________p1 = \ - rcu_cmpxchg_pointer_sym((void **)(p), (old), (_new));\ + typeof(*(p)) _________pold = (old); \ + typeof(*(p)) _________pnew = (_new); \ + typeof(*(p)) _________p1 = URCU_FORCE_CAST(typeof(*(p)), \ + rcu_cmpxchg_pointer_sym(URCU_FORCE_CAST(void **, p),\ + _________pold, \ + _________pnew)); \ (_________p1); \ }) extern void *rcu_xchg_pointer_sym(void **p, void *v); #define rcu_xchg_pointer(p, v) \ ({ \ - typeof(*p) _________p1 = \ - rcu_xchg_pointer_sym((void **)(p), (v)); \ + typeof(*(p)) _________pv = (v); \ + typeof(*(p)) _________p1 = URCU_FORCE_CAST(typeof(*(p)), \ + rcu_xchg_pointer_sym(URCU_FORCE_CAST(void **, p), \ + _________pv)); \ (_________p1); \ }) extern void *rcu_set_pointer_sym(void **p, void *v); #define rcu_set_pointer(p, v) \ ({ \ - typeof(*p) _________p1 = \ - rcu_set_pointer_sym((void **)(p), (v)); \ + typeof(*(p)) _________pv = (v); \ + typeof(*(p)) _________p1 = URCU_FORCE_CAST(typeof(*(p)), \ + rcu_set_pointer_sym(URCU_FORCE_CAST(void **, p), \ + _________pv)); \ + (_________p1); \ }) #endif /* !_LGPL_SOURCE */ @@ -102,4 +115,8 @@ extern void *rcu_set_pointer_sym(void **p, void *v); */ #define rcu_assign_pointer(p, v) rcu_set_pointer((&p), (v)) +#ifdef __cplusplus +} +#endif + #endif /* _URCU_POINTER_H */