diff options
Diffstat (limited to 'erts/emulator/beam/io.c')
| -rw-r--r-- | erts/emulator/beam/io.c | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c index fbcb0c31fc..538015b242 100644 --- a/erts/emulator/beam/io.c +++ b/erts/emulator/beam/io.c @@ -5767,16 +5767,20 @@ deliver_term_check_port(ErlDrvTermData port_id, Eterm *connected_p) ErtsThrPrgrDelayHandle dhndl = erts_thr_progress_unmanaged_delay(); #endif erts_aint32_t state; + int res = 1; Port *prt = erts_port_lookup_raw((Eterm) port_id); - if (!prt) - return -1; + if (!prt) { + res = -1; + goto done; + } state = erts_atomic32_read_nob(&prt->state); if (state & (ERTS_PORT_SFLGS_INVALID_DRIVER_LOOKUP | ERTS_PORT_SFLG_CLOSING)) { if (state & ERTS_PORT_SFLGS_INVALID_DRIVER_LOOKUP) - return -1; + res = -1; else - return 0; + res = 0; + goto done; } if (connected_p) { #ifdef ERTS_SMP @@ -5785,22 +5789,25 @@ deliver_term_check_port(ErlDrvTermData port_id, Eterm *connected_p) #endif *connected_p = ERTS_PORT_GET_CONNECTED(prt); } + +done: + #ifdef ERTS_SMP if (dhndl != ERTS_THR_PRGR_DHANDLE_MANAGED) { + ERTS_SMP_LC_ASSERT(!prt || !erts_lc_is_port_locked(prt)); erts_thr_progress_unmanaged_continue(dhndl); ETHR_MEMBAR(ETHR_LoadLoad|ETHR_LoadStore); - } + } else #endif - ERTS_SMP_LC_ASSERT(dhndl == ERTS_THR_PRGR_DHANDLE_MANAGED - ? erts_lc_is_port_locked(prt) - : !erts_lc_is_port_locked(prt)); - return 1; + ERTS_SMP_LC_ASSERT(res != 1 || erts_lc_is_port_locked(prt)); + + return res; } int erl_drv_output_term(ErlDrvTermData port_id, ErlDrvTermData* data, int len) { /* May be called from arbitrary thread */ - Eterm connected; + Eterm connected = NIL; /* Shut up faulty warning... */ int res = deliver_term_check_port(port_id, &connected); if (res <= 0) return res; |