diff options
Diffstat (limited to 'erts/emulator/beam/erl_port_task.c')
| -rw-r--r-- | erts/emulator/beam/erl_port_task.c | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/erts/emulator/beam/erl_port_task.c b/erts/emulator/beam/erl_port_task.c index 0ed08bee01..f753de8f52 100644 --- a/erts/emulator/beam/erl_port_task.c +++ b/erts/emulator/beam/erl_port_task.c @@ -552,6 +552,19 @@ set_handle(ErtsPortTask *ptp, ErtsPortTaskHandle *pthp) } } +static ERTS_INLINE void +set_tmp_handle(ErtsPortTask *ptp, ErtsPortTaskHandle *pthp) +{ + ptp->u.alive.handle = NULL; + if (pthp) { + /* + * IMPORTANT! Task either need to be aborted, or task handle + * need to be detached before thread progress has been made. + */ + erts_smp_atomic_set_relb(pthp, (erts_aint_t) ptp); + } +} + /* * Busy port queue management @@ -1182,6 +1195,13 @@ erl_drv_consume_timeslice(ErlDrvPort dprt, int percent) return 1; } +void +erts_port_task_tmp_handle_detach(ErtsPortTaskHandle *pthp) +{ + ERTS_SMP_LC_ASSERT(erts_thr_progress_lc_is_delaying()); + reset_port_task_handle(pthp); +} + /* * Abort a scheduled task. */ @@ -1206,7 +1226,7 @@ erts_port_task_abort(ErtsPortTaskHandle *pthp) ERTS_SMP_READ_MEMORY_BARRIER; old_state = erts_smp_atomic32_read_nob(&ptp->state); if (old_state == ERTS_PT_STATE_SCHEDULED) { - ASSERT(saved_pthp == pthp); + ASSERT(!saved_pthp || saved_pthp == pthp); } #endif @@ -1227,9 +1247,6 @@ erts_port_task_abort(ErtsPortTaskHandle *pthp) &erts_port_task_outstanding_io_tasks) > 0); erts_smp_atomic_dec_relb(&erts_port_task_outstanding_io_tasks); break; - case ERTS_PORT_TASK_PROC_SIG: - ERTS_INTERNAL_ERROR("Aborted process to port signal"); - break; default: break; } @@ -1404,7 +1421,6 @@ erts_port_task_schedule(Eterm id, } case ERTS_PORT_TASK_PROC_SIG: { va_list argp; - ASSERT(!pthp); va_start(argp, type); sigdp = va_arg(argp, ErtsProc2PortSigData *); ptp = p2p_sig_data_to_task(sigdp); @@ -1412,7 +1428,7 @@ erts_port_task_schedule(Eterm id, ptp->u.alive.flags |= va_arg(argp, int); va_end(argp); if (!(ptp->u.alive.flags & ERTS_PT_FLG_NOSUSPEND)) - set_handle(ptp, pthp); + set_tmp_handle(ptp, pthp); else { ns_pthlp = erts_alloc(ERTS_ALC_T_PT_HNDL_LIST, sizeof(ErtsPortTaskHandleList)); @@ -1912,18 +1928,21 @@ begin_port_cleanup(Port *pp, ErtsPortTask **execqp, int *processing_busy_q_p) break; case ERTS_PORT_TASK_INPUT: erts_stale_drv_select(pp->common.id, + ERTS_Port2ErlDrvPort(pp), ptp->u.alive.td.io.event, DO_READ, 1); break; case ERTS_PORT_TASK_OUTPUT: erts_stale_drv_select(pp->common.id, + ERTS_Port2ErlDrvPort(pp), ptp->u.alive.td.io.event, DO_WRITE, 1); break; case ERTS_PORT_TASK_EVENT: erts_stale_drv_select(pp->common.id, + ERTS_Port2ErlDrvPort(pp), ptp->u.alive.td.io.event, 0, 1); |