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Diffstat (limited to 'erts/emulator/beam/erl_async.c')
-rw-r--r--erts/emulator/beam/erl_async.c80
1 files changed, 2 insertions, 78 deletions
diff --git a/erts/emulator/beam/erl_async.c b/erts/emulator/beam/erl_async.c
index 9a93034fcb..3ceb2fd368 100644
--- a/erts/emulator/beam/erl_async.c
+++ b/erts/emulator/beam/erl_async.c
@@ -34,9 +34,6 @@
#define ERTS_ASYNC_PRINT_JOB 0
-#if !defined(ERTS_SMP) && defined(USE_THREADS) && !ERTS_USE_ASYNC_READY_Q
-# error "Need async ready queue in non-smp case"
-#endif
typedef struct _erl_async {
DE_Handle* hndl; /* The DE_Handle is needed when port is gone */
@@ -46,16 +43,13 @@ typedef struct _erl_async {
ErlDrvPDL pdl;
void (*async_invoke)(void*);
void (*async_free)(void*);
-#if ERTS_USE_ASYNC_READY_Q
Uint sched_id;
union {
ErtsThrQPrepEnQ_t *prep_enq;
ErtsThrQFinDeQ_t fin_deq;
} q;
-#endif
} ErtsAsync;
-#if ERTS_USE_ASYNC_READY_Q
/*
* We can do without the enqueue mutex since it isn't needed for
@@ -94,7 +88,6 @@ typedef union {
char align__[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(ErtsAsyncReadyQ))];
} ErtsAlgndAsyncReadyQ;
-#endif /* ERTS_USE_ASYNC_READY_Q */
typedef struct {
ErtsThrQ_t thr_q;
@@ -119,12 +112,10 @@ typedef struct {
char align__[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(ErtsAsyncInit))];
} init;
ErtsAlgndAsyncQ *queue;
-#if ERTS_USE_ASYNC_READY_Q
ErtsAlgndAsyncReadyQ *ready_queue;
-#endif
} ErtsAsyncData;
-#if defined(USE_THREADS) && defined(USE_VM_PROBES)
+#if defined(USE_VM_PROBES)
/*
* Some compilers, e.g. GCC 4.2.1 and -O3, will optimize away DTrace
@@ -140,15 +131,6 @@ int erts_async_thread_suggested_stack_size; /* Initialized by erl_init.c */
static ErtsAsyncData *async;
-#ifndef USE_THREADS
-
-void
-erts_init_async(void)
-{
-
-}
-
-#else
static void *async_main(void *);
@@ -158,7 +140,6 @@ async_q(int i)
return &async->queue[i].aq;
}
-#if ERTS_USE_ASYNC_READY_Q
static ERTS_INLINE ErtsAsyncReadyQ *
async_ready_q(Uint sched_id)
@@ -166,16 +147,13 @@ async_ready_q(Uint sched_id)
return &async->ready_queue[((int)sched_id)-1].arq;
}
-#endif
void
erts_init_async(void)
{
async = NULL;
if (erts_async_max_threads > 0) {
-#if ERTS_USE_ASYNC_READY_Q
ErtsThrQInit_t qinit = ERTS_THR_Q_INIT_DEFAULT;
-#endif
erts_thr_opts_t thr_opts = ERTS_THR_OPTS_DEFAULT_INITER;
char *ptr, thr_name[16];
size_t tot_size = 0;
@@ -183,9 +161,7 @@ erts_init_async(void)
tot_size += ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(ErtsAsyncData));
tot_size += sizeof(ErtsAlgndAsyncQ)*erts_async_max_threads;
-#if ERTS_USE_ASYNC_READY_Q
tot_size += sizeof(ErtsAlgndAsyncReadyQ)*erts_no_schedulers;
-#endif
ptr = erts_alloc_permanent_cache_aligned(ERTS_ALC_T_ASYNC_DATA,
tot_size);
@@ -202,7 +178,6 @@ erts_init_async(void)
async->queue = (ErtsAlgndAsyncQ *) ptr;
ptr += sizeof(ErtsAlgndAsyncQ)*erts_async_max_threads;
-#if ERTS_USE_ASYNC_READY_Q
qinit.live.queue = ERTS_THR_Q_LIVE_LONG;
qinit.live.objects = ERTS_THR_Q_LIVE_SHORT;
@@ -222,7 +197,6 @@ erts_init_async(void)
erts_thr_q_initialize(&arq->thr_q, &qinit);
}
-#endif
/* Create async threads... */
@@ -253,7 +227,6 @@ erts_init_async(void)
}
}
-#if ERTS_USE_ASYNC_READY_Q
void *
erts_get_async_ready_queue(Uint sched_id)
@@ -261,7 +234,6 @@ erts_get_async_ready_queue(Uint sched_id)
return (void *) async ? async_ready_q(sched_id) : NULL;
}
-#endif
static ERTS_INLINE void async_add(ErtsAsync *a, ErtsAsyncQ* q)
{
@@ -270,10 +242,8 @@ static ERTS_INLINE void async_add(ErtsAsync *a, ErtsAsyncQ* q)
#endif
if (is_internal_port(a->port)) {
-#if ERTS_USE_ASYNC_READY_Q
ErtsAsyncReadyQ *arq = async_ready_q(a->sched_id);
a->q.prep_enq = erts_thr_q_prepare_enqueue(&arq->thr_q);
-#endif
/* make sure the driver will stay around */
if (a->hndl)
erts_ddll_reference_referenced_driver(a->hndl);
@@ -309,10 +279,8 @@ static ERTS_INLINE ErtsAsync *async_get(ErtsThrQ_t *q,
erts_tse_t *tse,
ErtsThrQPrepEnQ_t **prep_enq)
{
-#if ERTS_USE_ASYNC_READY_Q
int saved_fin_deq = 0;
ErtsThrQFinDeQ_t fin_deq;
-#endif
#ifdef USE_VM_PROBES
int len;
#endif
@@ -321,12 +289,10 @@ static ERTS_INLINE ErtsAsync *async_get(ErtsThrQ_t *q,
ErtsAsync *a = (ErtsAsync *) erts_thr_q_dequeue(q);
if (a) {
-#if ERTS_USE_ASYNC_READY_Q
*prep_enq = a->q.prep_enq;
erts_thr_q_get_finalize_dequeue_data(q, &a->q.fin_deq);
if (saved_fin_deq)
erts_thr_q_append_finalize_dequeue_data(&a->q.fin_deq, &fin_deq);
-#endif
#ifdef USE_LTTNG_VM_TRACEPOINTS
if (LTTNG_ENABLED(aio_pool_get)) {
lttng_decl_portbuf(port_str);
@@ -354,7 +320,6 @@ static ERTS_INLINE ErtsAsync *async_get(ErtsThrQ_t *q,
erts_tse_reset(tse);
-#if ERTS_USE_ASYNC_READY_Q
chk_fin_deq:
if (erts_thr_q_get_finalize_dequeue_data(q, &tmp_fin_deq)) {
if (!saved_fin_deq) {
@@ -364,13 +329,11 @@ static ERTS_INLINE ErtsAsync *async_get(ErtsThrQ_t *q,
erts_thr_q_append_finalize_dequeue_data(&fin_deq,
&tmp_fin_deq);
}
-#endif
switch (erts_thr_q_inspect(q, 1)) {
case ERTS_THR_Q_DIRTY:
break;
case ERTS_THR_Q_NEED_THR_PRGR:
-#ifdef ERTS_SMP
{
ErtsThrPrgrVal prgr = erts_thr_q_need_thr_progress(q);
erts_thr_progress_wakeup(NULL, prgr);
@@ -382,17 +345,14 @@ static ERTS_INLINE ErtsAsync *async_get(ErtsThrQ_t *q,
erts_tse_wait(tse);
break;
}
-#endif
case ERTS_THR_Q_CLEAN:
-#if ERTS_USE_ASYNC_READY_Q
if (saved_fin_deq) {
if (erts_thr_q_finalize_dequeue(&fin_deq))
goto chk_fin_deq;
else
saved_fin_deq = 0;
}
-#endif
erts_tse_wait(tse);
break;
@@ -408,15 +368,10 @@ static ERTS_INLINE ErtsAsync *async_get(ErtsThrQ_t *q,
static ERTS_INLINE void call_async_ready(ErtsAsync *a)
{
-#if ERTS_USE_ASYNC_READY_Q
Port *p = erts_id2port_sflgs(a->port,
NULL,
0,
ERTS_PORT_SFLGS_INVALID_DRIVER_LOOKUP);
-#else
- Port *p = erts_thr_id2port_sflgs(a->port,
- ERTS_PORT_SFLGS_INVALID_DRIVER_LOOKUP);
-#endif
if (!p) {
if (a->async_free) {
ERTS_MSACC_PUSH_AND_SET_STATE(ERTS_MSACC_STATE_PORT);
@@ -432,11 +387,7 @@ static ERTS_INLINE void call_async_ready(ErtsAsync *a)
ERTS_MSACC_POP_STATE();
}
}
-#if ERTS_USE_ASYNC_READY_Q
erts_port_release(p);
-#else
- erts_thr_port_release(p);
-#endif
}
if (a->pdl)
driver_pdl_dec_refc(a->pdl);
@@ -446,7 +397,6 @@ static ERTS_INLINE void call_async_ready(ErtsAsync *a)
static ERTS_INLINE void async_reply(ErtsAsync *a, ErtsThrQPrepEnQ_t *prep_enq)
{
-#if ERTS_USE_ASYNC_READY_Q
ErtsAsyncReadyQ *arq;
#if ERTS_ASYNC_PRINT_JOB
@@ -465,12 +415,6 @@ static ERTS_INLINE void async_reply(ErtsAsync *a, ErtsThrQPrepEnQ_t *prep_enq)
erts_mtx_unlock(&arq->x.data.enq_mtx);
#endif
-#else /* ERTS_USE_ASYNC_READY_Q */
-
- call_async_ready(a);
- erts_free(ERTS_ALC_T_ASYNC, (void *) a);
-
-#endif /* ERTS_USE_ASYNC_READY_Q */
}
@@ -486,7 +430,6 @@ static erts_tse_t *async_thread_init(ErtsAsyncQ *aq)
erts_tse_t *tse = erts_tse_fetch();
ERTS_DECLARE_DUMMY(Uint no);
-#ifdef ERTS_SMP
ErtsThrPrgrCallbacks callbacks;
callbacks.arg = (void *) tse;
@@ -495,15 +438,12 @@ static erts_tse_t *async_thread_init(ErtsAsyncQ *aq)
callbacks.wait = NULL;
erts_thr_progress_register_unmanaged_thread(&callbacks);
-#endif
qinit.live.queue = ERTS_THR_Q_LIVE_LONG;
qinit.live.objects = ERTS_THR_Q_LIVE_SHORT;
qinit.arg = (void *) tse;
qinit.notify = async_wakeup;
-#if ERTS_USE_ASYNC_READY_Q
qinit.auto_finalize_dequeue = 0;
-#endif
erts_thr_q_initialize(&aq->thr_q, &qinit);
@@ -545,12 +485,10 @@ static void *async_main(void* arg)
return NULL;
}
-#endif /* USE_THREADS */
void
erts_exit_flush_async(void)
{
-#ifdef USE_THREADS
int i;
ErtsAsync a;
a.port = NIL;
@@ -564,11 +502,8 @@ erts_exit_flush_async(void)
async_add(&a, async_q(i));
for (i = 0; i < erts_async_max_threads; i++)
erts_thr_join(async->queue[i].aq.thr_id, NULL);
-#endif
}
-#if defined(USE_THREADS) && ERTS_USE_ASYNC_READY_Q
-
int erts_check_async_ready(void *varq)
{
ErtsAsyncReadyQ *arq = (ErtsAsyncReadyQ *) varq;
@@ -609,18 +544,15 @@ int erts_async_ready_clean(void *varq, void *val)
case ERTS_THR_Q_DIRTY:
return ERTS_ASYNC_READY_DIRTY;
case ERTS_THR_Q_NEED_THR_PRGR:
-#ifdef ERTS_SMP
*((ErtsThrPrgrVal *) val)
= erts_thr_q_need_thr_progress(&arq->thr_q);
return ERTS_ASYNC_READY_NEED_THR_PRGR;
-#endif
case ERTS_THR_Q_CLEAN:
break;
}
return ERTS_ASYNC_READY_CLEAN;
}
-#endif
/*
** Generate a fair async key prom an ErlDrvPort
@@ -658,28 +590,22 @@ long driver_async(ErlDrvPort ix, unsigned int* key,
Port* prt;
long id;
unsigned int qix;
-#if ERTS_USE_ASYNC_READY_Q
Uint sched_id;
ERTS_MSACC_PUSH_STATE();
sched_id = erts_get_scheduler_id();
if (!sched_id)
sched_id = 1;
-#else
- ERTS_MSACC_PUSH_STATE();
-#endif
prt = erts_drvport2port(ix);
if (prt == ERTS_INVALID_ERL_DRV_PORT)
return -1;
- ERTS_SMP_LC_ASSERT(erts_lc_is_port_locked(prt));
+ ERTS_LC_ASSERT(erts_lc_is_port_locked(prt));
a = (ErtsAsync*) erts_alloc(ERTS_ALC_T_ASYNC, sizeof(ErtsAsync));
-#if ERTS_USE_ASYNC_READY_Q
a->sched_id = sched_id;
-#endif
a->hndl = (DE_Handle*)prt->drv_ptr->handle;
a->port = prt->common.id;
a->pdl = NULL;
@@ -709,7 +635,6 @@ long driver_async(ErlDrvPort ix, unsigned int* key,
(*key % erts_async_max_threads) : 0;
*key = qix;
}
-#ifdef USE_THREADS
if (erts_async_max_threads > 0) {
if (prt->port_data_lock) {
driver_pdl_inc_refc(prt->port_data_lock);
@@ -718,7 +643,6 @@ long driver_async(ErlDrvPort ix, unsigned int* key,
async_add(a, async_q(qix));
return id;
}
-#endif
ERTS_MSACC_SET_STATE_CACHED(ERTS_MSACC_STATE_PORT);
(*a->async_invoke)(a->async_data);