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-rw-r--r--erts/emulator/beam/io.c355
1 files changed, 102 insertions, 253 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index 7cadd4aaad..01e130bd64 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -364,9 +364,8 @@ static Port *create_port(char *name,
ERTS_P_LINKS(prt) = NULL;
ERTS_P_MONITORS(prt) = NULL;
prt->linebuf = NULL;
- prt->bp = NULL;
prt->suspended = NULL;
- prt->data = am_undefined;
+ erts_init_port_data(prt);
prt->port_data_lock = NULL;
prt->control_flags = 0;
prt->bytes_in = 0;
@@ -1442,6 +1441,7 @@ erts_schedule_proc2port_signal(Process *c_p,
Eterm *refp,
ErtsProc2PortSigData *sigdp,
int task_flags,
+ ErtsPortTaskHandle *pthp,
ErtsProc2PortSigCallback callback)
{
int sched_res;
@@ -1491,7 +1491,7 @@ erts_schedule_proc2port_signal(Process *c_p,
/* Schedule port close call for later execution... */
sched_res = erts_port_task_schedule(prt->common.id,
- NULL,
+ pthp,
ERTS_PORT_TASK_PROC_SIG,
sigdp,
callback,
@@ -1629,6 +1629,7 @@ bad_port_signal(Process *c_p,
refp,
sigdp,
0,
+ NULL,
port_badsig);
}
@@ -1838,8 +1839,11 @@ erts_port_output(Process *c_p,
ErlIOVec *evp = NULL;
char *buf = NULL;
int force_immediate_call = (flags & ERTS_PORT_SIG_FLG_FORCE_IMM_CALL);
+ int async_nosuspend;
+ ErtsPortTaskHandle *ns_pthp;
ASSERT((flags & ~(ERTS_PORT_SIG_FLG_BANG_OP
+ | ERTS_PORT_SIG_FLG_ASYNC
| ERTS_PORT_SIG_FLG_NOSUSPEND
| ERTS_PORT_SIG_FLG_FORCE
| ERTS_PORT_SIG_FLG_FORCE_IMM_CALL)) == 0);
@@ -1861,6 +1865,12 @@ erts_port_output(Process *c_p,
? ERTS_PORT_OP_DROPPED
: ERTS_PORT_OP_BUSY);
+ async_nosuspend = ((flags & (ERTS_PORT_SIG_FLG_ASYNC
+ | ERTS_PORT_SIG_FLG_NOSUSPEND
+ | ERTS_PORT_SIG_FLG_FORCE))
+ == (ERTS_PORT_SIG_FLG_ASYNC
+ | ERTS_PORT_SIG_FLG_NOSUSPEND));
+
try_call = (force_immediate_call /* crash dumping */
|| !(sched_flags & (invalid_flags
| ERTS_PTS_FLGS_FORCE_SCHEDULE_OP)));
@@ -1995,6 +2005,15 @@ erts_port_output(Process *c_p,
return ERTS_PORT_OP_DONE;
case ERTS_TRY_IMM_DRV_CALL_INVALID_SCHED_FLAGS:
sched_flags = try_call_state.sched_flags;
+ if (async_nosuspend
+ && (sched_flags & (busy_flgs|ERTS_PTS_FLG_EXIT))) {
+ driver_free_binary(cbin);
+ if (evp != &ev)
+ erts_free(ERTS_ALC_T_TMP, evp);
+ return ((sched_flags & ERTS_PTS_FLG_EXIT)
+ ? ERTS_PORT_OP_DROPPED
+ : ERTS_PORT_OP_BUSY);
+ }
case ERTS_TRY_IMM_DRV_CALL_BUSY_LOCK:
/* Schedule outputv() call instead... */
break;
@@ -2142,6 +2161,13 @@ erts_port_output(Process *c_p,
return ERTS_PORT_OP_DONE;
case ERTS_TRY_IMM_DRV_CALL_INVALID_SCHED_FLAGS:
sched_flags = try_call_state.sched_flags;
+ if (async_nosuspend
+ && (sched_flags & (busy_flgs|ERTS_PTS_FLG_EXIT))) {
+ erts_free(ERTS_ALC_T_TMP, buf);
+ return ((sched_flags & ERTS_PTS_FLG_EXIT)
+ ? ERTS_PORT_OP_DROPPED
+ : ERTS_PORT_OP_BUSY);
+ }
case ERTS_TRY_IMM_DRV_CALL_BUSY_LOCK:
/* Schedule outputv() call instead... */
break;
@@ -2163,20 +2189,33 @@ erts_port_output(Process *c_p,
task_flags = ERTS_PT_FLG_WAIT_BUSY;
sigdp->flags |= flags;
+ ns_pthp = NULL;
if (flags & (ERTS_P2P_SIG_DATA_FLG_FORCE|ERTS_P2P_SIG_DATA_FLG_NOSUSPEND)) {
task_flags = 0;
if (flags & ERTS_P2P_SIG_DATA_FLG_FORCE)
sigdp->flags &= ~ERTS_P2P_SIG_DATA_FLG_NOSUSPEND;
+ else if (async_nosuspend) {
+ ErtsSchedulerData *esdp = (c_p
+ ? ERTS_PROC_GET_SCHDATA(c_p)
+ : erts_get_scheduler_data());
+ ASSERT(esdp);
+ ns_pthp = &esdp->nosuspend_port_task_handle;
+ sigdp->flags &= ~ERTS_P2P_SIG_DATA_FLG_NOSUSPEND;
+ }
else if (flags & ERTS_P2P_SIG_DATA_FLG_NOSUSPEND)
task_flags = ERTS_PT_FLG_NOSUSPEND;
}
+ ASSERT(ns_pthp || !async_nosuspend);
+ ASSERT(async_nosuspend || !ns_pthp);
+
res = erts_schedule_proc2port_signal(c_p,
prt,
c_p ? c_p->common.id : ERTS_INVALID_PID,
refp,
sigdp,
task_flags,
+ ns_pthp,
port_sig_callback);
if (res != ERTS_PORT_OP_SCHEDULED) {
@@ -2187,9 +2226,23 @@ erts_port_output(Process *c_p,
return res;
}
- if (!(sched_flags & ERTS_PTS_FLG_EXIT) && (sched_flags & busy_flgs))
- return ERTS_PORT_OP_BUSY_SCHEDULED;
-
+ if (!(flags & ERTS_PORT_SIG_FLG_FORCE)) {
+ sched_flags = erts_smp_atomic32_read_acqb(&prt->sched.flags);
+ if (!(sched_flags & ERTS_PTS_FLG_BUSY_PORT)) {
+ if (async_nosuspend)
+ erts_port_task_tmp_handle_detach(ns_pthp);
+ }
+ else {
+ if (!async_nosuspend)
+ return ERTS_PORT_OP_BUSY_SCHEDULED;
+ else {
+ if (erts_port_task_abort(ns_pthp) == 0)
+ return ERTS_PORT_OP_BUSY;
+ else
+ erts_port_task_tmp_handle_detach(ns_pthp);
+ }
+ }
+ }
return res;
bad_value:
@@ -2285,6 +2338,7 @@ erts_port_exit(Process *c_p,
ErlHeapFragment *bp = NULL;
ASSERT((flags & ~(ERTS_PORT_SIG_FLG_BANG_OP
+ | ERTS_PORT_SIG_FLG_ASYNC
| ERTS_PORT_SIG_FLG_BROKEN_LINK
| ERTS_PORT_SIG_FLG_FORCE_SCHED)) == 0);
@@ -2345,6 +2399,7 @@ erts_port_exit(Process *c_p,
refp,
sigdp,
0,
+ NULL,
port_sig_exit);
if (res == ERTS_PORT_OP_DROPPED) {
@@ -2460,7 +2515,8 @@ erts_port_connect(Process *c_p,
!refp,
am_connect);
- ASSERT((flags & ~ERTS_PORT_SIG_FLG_BANG_OP) == 0);
+ ASSERT((flags & ~(ERTS_PORT_SIG_FLG_BANG_OP
+ | ERTS_PORT_SIG_FLG_ASYNC)) == 0);
if (is_not_internal_pid(connect))
connect_id = NIL; /* Fail in op (for signal order) */
@@ -2499,6 +2555,7 @@ erts_port_connect(Process *c_p,
refp,
sigdp,
0,
+ NULL,
port_sig_connect);
}
@@ -2555,6 +2612,7 @@ erts_port_unlink(Process *c_p, Port *prt, Eterm from, Eterm *refp)
refp,
sigdp,
0,
+ NULL,
port_sig_unlink);
}
@@ -2644,11 +2702,13 @@ erts_port_link(Process *c_p, Port *prt, Eterm to, Eterm *refp)
refp,
sigdp,
0,
+ NULL,
port_sig_link);
}
void erts_init_io(int port_tab_size,
- int port_tab_size_ignore_files)
+ int port_tab_size_ignore_files,
+ int legacy_port_tab)
{
ErlDrvEntry** dp;
UWord common_element_size;
@@ -2691,7 +2751,8 @@ void erts_init_io(int port_tab_size,
(ErtsPTabElementCommon *) &erts_invalid_port.common,
port_tab_size,
common_element_size, /* Doesn't need to be excact */
- "port_table");
+ "port_table",
+ legacy_port_tab);
erts_smp_atomic_init_nob(&erts_bytes_out, 0);
erts_smp_atomic_init_nob(&erts_bytes_in, 0);
@@ -3371,11 +3432,8 @@ terminate_port(Port *prt)
erts_free(ERTS_ALC_T_LINEBUF, (void *) prt->linebuf);
prt->linebuf = NULL;
}
- if (prt->bp != NULL) {
- free_message_buffer(prt->bp);
- prt->bp = NULL;
- prt->data = am_undefined;
- }
+
+ erts_cleanup_port_data(prt);
if (prt->psd)
erts_free(ERTS_ALC_T_PRTSD, prt->psd);
@@ -3625,6 +3683,10 @@ erts_port_command(Process *c_p,
ASSERT(port);
flags |= ERTS_PORT_SIG_FLG_BANG_OP;
+ if (!erts_port_synchronous_ops) {
+ flags |= ERTS_PORT_SIG_FLG_ASYNC;
+ refp = NULL;
+ }
if (is_tuple_arity(command, 2)) {
Eterm cntd;
@@ -3632,21 +3694,14 @@ erts_port_command(Process *c_p,
cntd = tp[1];
if (is_internal_pid(cntd)) {
if (tp[2] == am_close) {
- if (!erts_port_synchronous_ops)
- refp = NULL;
flags &= ~ERTS_PORT_SIG_FLG_NOSUSPEND;
return erts_port_exit(c_p, flags, port, cntd, am_normal, refp);
} else if (is_tuple_arity(tp[2], 2)) {
tp = tuple_val(tp[2]);
if (tp[1] == am_command) {
- if (!(flags & ERTS_PORT_SIG_FLG_NOSUSPEND)
- && !erts_port_synchronous_ops)
- refp = NULL;
return erts_port_output(c_p, flags, port, cntd, tp[2], refp);
}
else if (tp[1] == am_connect) {
- if (!erts_port_synchronous_ops)
- refp = NULL;
flags &= ~ERTS_PORT_SIG_FLG_NOSUSPEND;
return erts_port_connect(c_p, flags, port, cntd, tp[2], refp);
}
@@ -3655,8 +3710,6 @@ erts_port_command(Process *c_p,
}
/* badsig */
- if (!erts_port_synchronous_ops)
- refp = NULL;
flags &= ~ERTS_PORT_SIG_FLG_NOSUSPEND;
return bad_port_signal(c_p, flags, port, c_p->common.id, refp, am_command);
}
@@ -4053,6 +4106,7 @@ erts_port_control(Process* c_p,
retvalp,
sigdp,
0,
+ NULL,
port_sig_control);
if (res != ERTS_PORT_OP_SCHEDULED) {
cleanup_scheduled_control(binp, bufp);
@@ -4147,7 +4201,7 @@ port_sig_call(Port *prt,
ErlOffHeap *ohp;
Process *rp;
ErtsProcLocks rp_locks = 0;
- Uint hsz;
+ Sint hsz;
rp = erts_proc_lookup_raw(sigdp->caller);
if (!rp)
@@ -4264,7 +4318,7 @@ erts_port_call(Process* c_p,
switch (try_call_res) {
case ERTS_TRY_IMM_DRV_CALL_OK: {
Eterm *hp, *hp_end;
- Uint hsz;
+ Sint hsz;
unsigned ret_flags = 0U;
Eterm term;
@@ -4333,6 +4387,7 @@ erts_port_call(Process* c_p,
retvalp,
sigdp,
0,
+ NULL,
port_sig_call);
if (res != ERTS_PORT_OP_SCHEDULED) {
cleanup_scheduled_call(bufp);
@@ -4499,228 +4554,10 @@ erts_port_info(Process* c_p,
retvalp,
sigdp,
0,
+ NULL,
port_sig_info);
}
-static int
-port_sig_set_data(Port *prt,
- erts_aint32_t state,
- int op,
- ErtsProc2PortSigData *sigdp)
-{
- ASSERT(sigdp->flags & ERTS_P2P_SIG_DATA_FLG_REPLY);
-
- if (op == ERTS_PROC2PORT_SIG_EXEC) {
- if (prt->bp)
- free_message_buffer(prt->bp);
- prt->bp = sigdp->u.set_data.bp;
- prt->data = sigdp->u.set_data.data;
- port_sched_op_reply(sigdp->caller, sigdp->ref, am_true);
- }
- else {
- if (sigdp->u.set_data.bp)
- free_message_buffer(sigdp->u.set_data.bp);
- port_sched_op_reply(sigdp->caller, sigdp->ref, am_badarg);
- }
- return ERTS_PORT_REDS_SET_DATA;
-}
-
-ErtsPortOpResult
-erts_port_set_data(Process* c_p,
- Port *prt,
- Eterm data,
- Eterm *refp)
-{
- ErtsPortOpResult res;
- Eterm set_data;
- ErlHeapFragment *bp;
- ErtsProc2PortSigData *sigdp;
- ErtsTryImmDrvCallResult try_call_res;
- ErtsTryImmDrvCallState try_call_state
- = ERTS_INIT_TRY_IMM_DRV_CALL_STATE(
- c_p,
- prt,
- ERTS_PORT_SFLGS_INVALID_LOOKUP,
- 0,
- !refp,
- am_set_data);
-
- if (is_immed(data)) {
- set_data = data;
- bp = NULL;
- }
- else {
- Eterm *hp;
- Uint sz = size_object(data);
- bp = new_message_buffer(sz);
- hp = bp->mem;
- set_data = copy_struct(data, sz, &hp, &bp->off_heap);
- }
-
- try_call_res = try_imm_drv_call(&try_call_state);
- switch (try_call_res) {
- case ERTS_TRY_IMM_DRV_CALL_OK:
- if (prt->bp)
- free_message_buffer(prt->bp);
- prt->bp = bp;
- prt->data = set_data;
- finalize_imm_drv_call(&try_call_state);
- BUMP_REDS(c_p, ERTS_PORT_REDS_SET_DATA);
- return ERTS_PORT_OP_DONE;
- case ERTS_TRY_IMM_DRV_CALL_INVALID_PORT:
- return ERTS_PORT_OP_DROPPED;
- case ERTS_TRY_IMM_DRV_CALL_INVALID_SCHED_FLAGS:
- case ERTS_TRY_IMM_DRV_CALL_BUSY_LOCK:
- /* Schedule call instead... */
- break;
- }
-
- sigdp = erts_port_task_alloc_p2p_sig_data();
- sigdp->flags = ERTS_P2P_SIG_TYPE_SET_DATA;
- sigdp->u.set_data.data = set_data;
- sigdp->u.set_data.bp = bp;
-
- res = erts_schedule_proc2port_signal(c_p,
- prt,
- c_p->common.id,
- refp,
- sigdp,
- 0,
- port_sig_set_data);
- if (res != ERTS_PORT_OP_SCHEDULED && bp)
- free_message_buffer(bp);
- return res;
-}
-
-static int
-port_sig_get_data(Port *prt,
- erts_aint32_t state,
- int op,
- ErtsProc2PortSigData *sigdp)
-{
- ASSERT(sigdp->flags & ERTS_P2P_SIG_DATA_FLG_REPLY);
- if (op != ERTS_PROC2PORT_SIG_EXEC)
- port_sched_op_reply(sigdp->caller, sigdp->ref, am_badarg);
- else {
- Process *rp;
- ErtsProcLocks rp_locks = 0;
-
- rp = erts_proc_lookup_raw(sigdp->caller);
- if (rp) {
- Uint hsz;
- Eterm *hp, *hp_start;
- Eterm data, msg;
- ErlHeapFragment *bp;
- ErlOffHeap *ohp;
-
- hsz = ERTS_QUEUE_PORT_SCHED_OP_REPLY_SIZE;
- hsz += 3;
- if (prt->bp)
- hsz += prt->bp->used_size;
-
- hp_start = hp = erts_alloc_message_heap(hsz,
- &bp,
- &ohp,
- rp,
- &rp_locks);
-
- if (is_immed(prt->data))
- data = prt->data;
- else
- data = copy_struct(prt->data,
- prt->bp->used_size,
- &hp,
- &bp->off_heap);
-
-
-
- msg = TUPLE2(hp, am_ok, data);
- hp += 3;
-
- queue_port_sched_op_reply(rp,
- &rp_locks,
- hp_start,
- hp,
- hsz,
- bp,
- sigdp->ref,
- msg);
- if (rp_locks)
- erts_smp_proc_unlock(rp, rp_locks);
- }
- }
- return ERTS_PORT_REDS_GET_DATA;
-}
-
-ErtsPortOpResult
-erts_port_get_data(Process* c_p,
- Port *prt,
- Eterm *retvalp)
-{
- ErtsProc2PortSigData *sigdp;
- ErtsTryImmDrvCallResult try_call_res;
- ErtsTryImmDrvCallState try_call_state
- = ERTS_INIT_TRY_IMM_DRV_CALL_STATE(
- c_p,
- prt,
- ERTS_PORT_SFLGS_INVALID_LOOKUP,
- 0,
- 0,
- am_get_data);
-
- try_call_res = try_imm_drv_call(&try_call_state);
- switch (try_call_res) {
- case ERTS_TRY_IMM_DRV_CALL_OK: {
- Eterm *hp;
- Eterm data;
- ErlHeapFragment *bp;
- Uint sz;
- if (is_immed(prt->data)) {
- bp = NULL;
- data = prt->data;
- }
- else {
- bp = new_message_buffer(prt->bp->used_size);
- data = copy_struct(prt->data,
- prt->bp->used_size,
- &hp,
- &bp->off_heap);
- }
- finalize_imm_drv_call(&try_call_state);
- if (is_immed(data))
- sz = 0;
- else
- sz = bp->used_size;
-
- hp = HAlloc(c_p, sz + 3);
- if (is_not_immed(data)) {
- data = copy_struct(data, bp->used_size, &hp, &MSO(c_p));
- free_message_buffer(bp);
- }
- *retvalp = TUPLE2(hp, am_ok, data);
- BUMP_REDS(c_p, ERTS_PORT_REDS_GET_DATA);
- return ERTS_PORT_OP_DONE;
- }
- case ERTS_TRY_IMM_DRV_CALL_INVALID_PORT:
- return ERTS_PORT_OP_DROPPED;
- case ERTS_TRY_IMM_DRV_CALL_INVALID_SCHED_FLAGS:
- case ERTS_TRY_IMM_DRV_CALL_BUSY_LOCK:
- /* Schedule call instead... */
- break;
- }
-
- sigdp = erts_port_task_alloc_p2p_sig_data();
- sigdp->flags = ERTS_P2P_SIG_TYPE_GET_DATA;
-
- return erts_schedule_proc2port_signal(c_p,
- prt,
- c_p->common.id,
- retvalp,
- sigdp,
- 0,
- port_sig_get_data);
-}
-
typedef struct {
int to;
void *arg;
@@ -4977,7 +4814,8 @@ int async_ready(Port *p, void* data)
static void
report_missing_drv_callback(Port *p, char *drv_type, char *callback)
{
- ErtsPortNames *pnp = erts_get_port_names(p->common.id);
+ ErtsPortNames *pnp = erts_get_port_names(p->common.id,
+ ERTS_Port2ErlDrvPort(p));
char *unknown = "<unknown>";
char *drv_name = pnp->driver_name ? pnp->driver_name : unknown;
char *prt_name = pnp->name ? pnp->name : unknown;
@@ -4992,15 +4830,25 @@ report_missing_drv_callback(Port *p, char *drv_type, char *callback)
void
erts_stale_drv_select(Eterm port,
+ ErlDrvPort drv_port,
ErlDrvEvent hndl,
int mode,
int deselect)
{
char *type;
- ErlDrvPort drv_port = ERTS_Port2ErlDrvPort(erts_port_lookup_raw(port));
- ErtsPortNames *pnp = erts_get_port_names(port);
+ ErtsPortNames *pnp;
erts_dsprintf_buf_t *dsbufp;
+ if (drv_port == ERTS_INVALID_ERL_DRV_PORT) {
+ Port *prt = erts_port_lookup_raw(port);
+ if (prt)
+ drv_port = ERTS_Port2ErlDrvPort(port);
+ else
+ drv_port = ERTS_INVALID_ERL_DRV_PORT;
+ }
+
+ pnp = erts_get_port_names(port, drv_port);
+
switch (mode) {
case ERL_DRV_READ | ERL_DRV_WRITE:
type = "Input/Output";
@@ -5035,12 +4883,16 @@ erts_stale_drv_select(Eterm port,
}
ErtsPortNames *
-erts_get_port_names(Eterm id)
+erts_get_port_names(Eterm id, ErlDrvPort drv_port)
{
- Port *prt = erts_port_lookup_raw(id);
+ Port *prt;
ErtsPortNames *pnp;
ASSERT(is_nil(id) || is_internal_port(id));
+ prt = ERTS_ErlDrvPort2Port(drv_port);
+ if (prt == ERTS_INVALID_ERL_DRV_PORT)
+ prt = erts_port_lookup_raw(id);
+
if (!prt) {
pnp = erts_alloc(ERTS_ALC_T_PORT_NAMES, sizeof(ErtsPortNames));
pnp->name = NULL;
@@ -5052,6 +4904,7 @@ erts_get_port_names(Eterm id)
size_t pnp_len = sizeof(ErtsPortNames);
#ifndef DEBUG
pnp_len += 100; /* In most cases 100 characters will be enough... */
+ ASSERT(prt->common.id == id);
#endif
pnp = erts_alloc(ERTS_ALC_T_PORT_NAMES, pnp_len);
do {
@@ -5941,10 +5794,6 @@ int driver_outputv(ErlDrvPort ix, char* hbuf, ErlDrvSizeT hlen,
return driver_output2(ix, hbuf, hlen, NULL, 0);
size = vec->size - skip; /* Size of remaining bytes in vector */
- ASSERT(hlen >= 0); /* debug only */
- if (hlen < 0)
- hlen = 0;
-
prt = erts_drvport2port_state(ix, &state);
if (prt == ERTS_INVALID_ERL_DRV_PORT)
return -1;