diff options
Diffstat (limited to 'erts/emulator/sys/common')
| -rw-r--r-- | erts/emulator/sys/common/erl_check_io.c | 42 |
1 files changed, 25 insertions, 17 deletions
diff --git a/erts/emulator/sys/common/erl_check_io.c b/erts/emulator/sys/common/erl_check_io.c index 474408ae7c..c16831a07d 100644 --- a/erts/emulator/sys/common/erl_check_io.c +++ b/erts/emulator/sys/common/erl_check_io.c @@ -481,6 +481,7 @@ ERTS_CIO_EXPORT(driver_select)(ErlDrvPort ix, int on) { void (*stop_select_fn)(ErlDrvEvent, void*) = NULL; + Port *prt = erts_drvport2port(ix); Eterm id = erts_drvport2id(ix); ErtsSysFdType fd = (ErtsSysFdType) e; ErtsPollEvents ctl_events = (ErtsPollEvents) 0; @@ -491,9 +492,11 @@ ERTS_CIO_EXPORT(driver_select)(ErlDrvPort ix, #ifdef USE_VM_PROBES DTRACE_CHARBUF(name, 64); #endif - - ERTS_SMP_LC_ASSERT(erts_drvport2port(ix, NULL) - && erts_lc_is_port_locked(erts_drvport2port(ix, NULL))); + + if (prt == ERTS_INVALID_ERL_DRV_PORT) + return -1; + + ERTS_SMP_LC_ASSERT(erts_lc_is_port_locked(prt)); #ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS if ((unsigned)fd >= (unsigned)erts_smp_atomic_read_nob(&drv_ev_state_len)) { @@ -519,9 +522,9 @@ ERTS_CIO_EXPORT(driver_select)(ErlDrvPort ix, if (!on && (mode&ERL_DRV_USE_NO_CALLBACK) == ERL_DRV_USE) { if (IS_FD_UNKNOWN(state)) { /* fast track to stop_select callback */ - stop_select_fn = erts_drvport2port(ix, NULL)->drv_ptr->stop_select; + stop_select_fn = prt->drv_ptr->stop_select; #ifdef USE_VM_PROBES - strncpy(name, erts_drvport2port(ix, NULL)->drv_ptr->name, sizeof(name)-1); + strncpy(name, prt->drv_ptr->name, sizeof(name)-1); name[sizeof(name)-1] = '\0'; #endif ret = 0; @@ -654,14 +657,14 @@ ERTS_CIO_EXPORT(driver_select)(ErlDrvPort ix, } } if ((mode & ERL_DRV_USE_NO_CALLBACK) == ERL_DRV_USE) { - erts_driver_t* drv_ptr = erts_drvport2port(ix, NULL)->drv_ptr; + erts_driver_t* drv_ptr = prt->drv_ptr; ASSERT(new_events==0); if (state->remove_cnt == 0 || !wake_poller) { /* Safe to close fd now as it is not in pollset or there was no need to eject fd (kernel poll) */ stop_select_fn = drv_ptr->stop_select; #ifdef USE_VM_PROBES - strncpy(name, erts_drvport2port(ix, NULL)->drv_ptr->name, sizeof(name)-1); + strncpy(name, prt->drv_ptr->name, sizeof(name)-1); name[sizeof(name)-1] = '\0'; #endif } @@ -712,9 +715,12 @@ ERTS_CIO_EXPORT(driver_event)(ErlDrvPort ix, ErtsDrvEventState *state; int do_wake = 0; int ret; + Port *prt = erts_drvport2port(ix); + + if (prt == ERTS_INVALID_ERL_DRV_PORT) + return -1; - ERTS_SMP_LC_ASSERT(erts_drvport2port(ix, NULL) - && erts_lc_is_port_locked(erts_drvport2port(ix, NULL))); + ERTS_SMP_LC_ASSERT(erts_lc_is_port_locked(prt)); #ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS if ((unsigned)fd >= (unsigned)erts_smp_atomic_read_nob(&drv_ev_state_len)) { @@ -949,7 +955,7 @@ static void print_select_op(erts_dsprintf_buf_t *dsbufp, ErlDrvPort ix, ErtsSysFdType fd, int mode, int on) { - Port *pp = erts_drvport2port(ix, NULL); + Port *pp = erts_drvport2port(ix); erts_dsprintf(dsbufp, "driver_select(%p, %d,%s%s%s%s, %d) " "by ", @@ -960,8 +966,8 @@ print_select_op(erts_dsprintf_buf_t *dsbufp, mode & ERL_DRV_USE ? " ERL_DRV_USE" : "", mode & (ERL_DRV_USE_NO_CALLBACK & ~ERL_DRV_USE) ? "_NO_CALLBACK" : "", on); - print_driver_name(dsbufp, pp->common.id); - erts_dsprintf(dsbufp, "driver %T ", pp ? pp->common.id : NIL); + print_driver_name(dsbufp, pp != ERTS_INVALID_ERL_DRV_PORT ? pp->common.id : NIL); + erts_dsprintf(dsbufp, "driver %T ", pp != ERTS_INVALID_ERL_DRV_PORT ? pp->common.id : NIL); } static void @@ -1020,8 +1026,9 @@ steal_pending_stop_select(erts_dsprintf_buf_t *dsbufp, ErlDrvPort ix, state->driver.drv_ptr = NULL; } else if ((mode & ERL_DRV_USE_NO_CALLBACK) == ERL_DRV_USE) { - erts_driver_t* drv_ptr = erts_drvport2port(ix, NULL)->drv_ptr; - if (drv_ptr != state->driver.drv_ptr) { + Port *prt = erts_drvport2port(ix); + erts_driver_t* drv_ptr = prt != ERTS_INVALID_ERL_DRV_PORT ? prt->drv_ptr : NULL; + if (drv_ptr && drv_ptr != state->driver.drv_ptr) { /* Some other driver wants the stop_select callback */ if (state->driver.drv_ptr->handle) { erts_ddll_dereference_driver(state->driver.drv_ptr->handle); @@ -1042,7 +1049,7 @@ static void print_event_op(erts_dsprintf_buf_t *dsbufp, ErlDrvPort ix, ErtsSysFdType fd, ErlDrvEventData event_data) { - Port *pp = erts_drvport2port(ix, NULL); + Port *pp = erts_drvport2port(ix); erts_dsprintf(dsbufp, "driver_event(%p, %d, ", ix, (int) fd); if (!event_data) erts_dsprintf(dsbufp, "NULL"); @@ -1051,8 +1058,9 @@ print_event_op(erts_dsprintf_buf_t *dsbufp, (unsigned int) event_data->events, (unsigned int) event_data->revents); erts_dsprintf(dsbufp, ") by "); - print_driver_name(dsbufp, pp->common.id); - erts_dsprintf(dsbufp, "driver %T ", pp ? pp->common.id : NIL); + if (pp != ERTS_INVALID_ERL_DRV_PORT) + print_driver_name(dsbufp, pp->common.id); + erts_dsprintf(dsbufp, "driver %T ", pp != ERTS_INVALID_ERL_DRV_PORT ? pp->common.id : NIL); } static void |