X-Git-Url: http://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu-qsbr.c;h=87cf41d7ee70f274dc6676af06e3c122dd986222;hp=b7c42fdb0c35deb37e8c5d76a4593746206df0d9;hb=848d408839fe4f829db477644c776eba166a0e9a;hpb=16aa9ee87cf4364921c36025359be01390338d87 diff --git a/urcu-qsbr.c b/urcu-qsbr.c index b7c42fd..87cf41d 100644 --- a/urcu-qsbr.c +++ b/urcu-qsbr.c @@ -23,17 +23,21 @@ * IBM's contributions to this file may be relicensed under LGPLv2 or later. */ +#define _GNU_SOURCE #include #include #include #include #include +#include #include #include #include +#include "urcu/map/urcu-qsbr.h" + #define BUILD_QSBR_LIB -#include "urcu-qsbr-static.h" +#include "urcu/static/urcu-qsbr.h" /* Do not #define _LGPL_SOURCE to ensure we can emit the wrapper symbols */ #include "urcu-qsbr.h" @@ -41,7 +45,7 @@ void __attribute__((destructor)) rcu_exit(void); static pthread_mutex_t rcu_gp_lock = PTHREAD_MUTEX_INITIALIZER; -int gp_futex; +int32_t gp_futex; /* * Global grace period counter. @@ -112,19 +116,20 @@ static void update_counter_and_wait(void) int wait_loops = 0; struct rcu_reader *index, *tmp; -#if (BITS_PER_LONG < 64) +#if (CAA_BITS_PER_LONG < 64) /* Switch parity: 0 -> 1, 1 -> 0 */ - CAA_STORE_SHARED(rcu_gp_ctr, rcu_gp_ctr ^ RCU_GP_CTR); -#else /* !(BITS_PER_LONG < 64) */ + CMM_STORE_SHARED(rcu_gp_ctr, rcu_gp_ctr ^ RCU_GP_CTR); +#else /* !(CAA_BITS_PER_LONG < 64) */ /* Increment current G.P. */ - CAA_STORE_SHARED(rcu_gp_ctr, rcu_gp_ctr + RCU_GP_CTR); -#endif /* !(BITS_PER_LONG < 64) */ + CMM_STORE_SHARED(rcu_gp_ctr, rcu_gp_ctr + RCU_GP_CTR); +#endif /* !(CAA_BITS_PER_LONG < 64) */ /* - * Must commit rcu_gp_ctr update to memory before waiting for quiescent - * state. Failure to do so could result in the writer waiting forever - * while new readers are always accessing data (no progress). Enforce - * compiler-order of store to rcu_gp_ctr before load rcu_reader ctr. + * Must commit rcu_gp_ctr update to memory before waiting for + * quiescent state. Failure to do so could result in the writer + * waiting forever while new readers are always accessing data + * (no progress). Enforce compiler-order of store to rcu_gp_ctr + * before load rcu_reader ctr. */ cmm_barrier(); @@ -179,7 +184,7 @@ static void update_counter_and_wait(void) * long-size to ensure we do not encounter an overflow bug. */ -#if (BITS_PER_LONG < 64) +#if (CAA_BITS_PER_LONG < 64) void synchronize_rcu(void) { unsigned long was_online; @@ -194,11 +199,11 @@ void synchronize_rcu(void) /* * Mark the writer thread offline to make sure we don't wait for - * our own quiescent state. This allows using synchronize_rcu() in - * threads registered as readers. + * our own quiescent state. This allows using synchronize_rcu() + * in threads registered as readers. */ if (was_online) - CAA_STORE_SHARED(rcu_reader.ctr, 0); + CMM_STORE_SHARED(rcu_reader.ctr, 0); mutex_lock(&rcu_gp_lock); @@ -212,10 +217,11 @@ void synchronize_rcu(void) /* * Must finish waiting for quiescent state for parity 0 before - * committing next rcu_gp_ctr update to memory. Failure to do so could - * result in the writer waiting forever while new readers are always - * accessing data (no progress). Enforce compiler-order of load - * rcu_reader ctr before store to rcu_gp_ctr. + * committing next rcu_gp_ctr update to memory. Failure to + * do so could result in the writer waiting forever while new + * readers are always accessing data (no progress). Enforce + * compiler-order of load rcu_reader ctr before store to + * rcu_gp_ctr. */ cmm_barrier(); @@ -238,10 +244,11 @@ out: * freed. */ if (was_online) - _CAA_STORE_SHARED(rcu_reader.ctr, CAA_LOAD_SHARED(rcu_gp_ctr)); + _CMM_STORE_SHARED(rcu_reader.ctr, + CMM_LOAD_SHARED(rcu_gp_ctr)); cmm_smp_mb(); } -#else /* !(BITS_PER_LONG < 64) */ +#else /* !(CAA_BITS_PER_LONG < 64) */ void synchronize_rcu(void) { unsigned long was_online; @@ -250,12 +257,12 @@ void synchronize_rcu(void) /* * Mark the writer thread offline to make sure we don't wait for - * our own quiescent state. This allows using synchronize_rcu() in - * threads registered as readers. + * our own quiescent state. This allows using synchronize_rcu() + * in threads registered as readers. */ cmm_smp_mb(); if (was_online) - CAA_STORE_SHARED(rcu_reader.ctr, 0); + CMM_STORE_SHARED(rcu_reader.ctr, 0); mutex_lock(&rcu_gp_lock); if (cds_list_empty(®istry)) @@ -265,10 +272,11 @@ out: mutex_unlock(&rcu_gp_lock); if (was_online) - _CAA_STORE_SHARED(rcu_reader.ctr, CAA_LOAD_SHARED(rcu_gp_ctr)); + _CMM_STORE_SHARED(rcu_reader.ctr, + CMM_LOAD_SHARED(rcu_gp_ctr)); cmm_smp_mb(); } -#endif /* !(BITS_PER_LONG < 64) */ +#endif /* !(CAA_BITS_PER_LONG < 64) */ /* * library wrappers to be used by non-LGPL compatible source code. @@ -326,3 +334,6 @@ void rcu_exit(void) { assert(cds_list_empty(®istry)); } + +#include "urcu-call-rcu-impl.h" +#include "urcu-defer-impl.h"