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SCP: Fix asynchronous event queue updates without intrinsic instructions.

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As discussed in #393
This commit is contained in:
Mark Pizzolato
2017-03-09 07:55:21 -08:00
parent b41d10f189
commit 9d013e9b44
2 changed files with 38 additions and 38 deletions
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8
sim_defs.h
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@@ -1050,7 +1050,7 @@ extern int32 sim_asynch_inst_latency;
/* This approach uses intrinsics to manage access to the link list head */
/* sim_asynch_queue. This implementation is a completely lock free design */
/* which avoids the potential ABA issues. */
#define AIO_QUEUE_MODE "Lock free asynchronous event queue access"
#define AIO_QUEUE_MODE "Lock free asynchronous event queue"
#define AIO_INIT \
do { \
int tmr; \
@@ -1082,7 +1082,7 @@ extern int32 sim_asynch_inst_latency;
#define AIO_ILOCK AIO_LOCK
#define AIO_IUNLOCK AIO_UNLOCK
#define AIO_QUEUE_VAL (UNIT *)(InterlockedCompareExchangePointer((void * volatile *)&sim_asynch_queue, (void *)sim_asynch_queue, NULL))
#define AIO_QUEUE_SET(val, queue) (UNIT *)(InterlockedCompareExchangePointer((void * volatile *)&sim_asynch_queue, (void *)val, queue))
#define AIO_QUEUE_SET(newval, oldval) (UNIT *)(InterlockedCompareExchangePointer((void * volatile *)&sim_asynch_queue, (void *)newval, oldval))
#define AIO_UPDATE_QUEUE sim_aio_update_queue ()
#define AIO_ACTIVATE(caller, uptr, event_time) \
if (!pthread_equal ( pthread_self(), sim_asynch_main_threadid )) { \
@@ -1093,7 +1093,7 @@ extern int32 sim_asynch_inst_latency;
/* This approach uses a pthread mutex to manage access to the link list */
/* head sim_asynch_queue. It will always work, but may be slower than the */
/* lock free approach when using USE_AIO_INTRINSICS */
#define AIO_QUEUE_MODE "Lock based asynchronous event queue access"
#define AIO_QUEUE_MODE "Lock based asynchronous event queue"
#define AIO_INIT \
do { \
int tmr; \
@@ -1123,7 +1123,7 @@ extern int32 sim_asynch_inst_latency;
#define AIO_ILOCK AIO_LOCK
#define AIO_IUNLOCK AIO_UNLOCK
#define AIO_QUEUE_VAL sim_asynch_queue
#define AIO_QUEUE_SET(val, queue) (sim_asynch_queue = val)
#define AIO_QUEUE_SET(newval, oldval) ((sim_asynch_queue = newval),oldval)
#define AIO_UPDATE_QUEUE sim_aio_update_queue ()
#define AIO_ACTIVATE(caller, uptr, event_time) \
if (!pthread_equal ( pthread_self(), sim_asynch_main_threadid )) { \