diff options
| -rw-r--r-- | erts/emulator/test/driver_SUITE_data/otp_9302_drv.c | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/erts/emulator/test/driver_SUITE_data/otp_9302_drv.c b/erts/emulator/test/driver_SUITE_data/otp_9302_drv.c index 7c144d20cf..ad29d17f06 100644 --- a/erts/emulator/test/driver_SUITE_data/otp_9302_drv.c +++ b/erts/emulator/test/driver_SUITE_data/otp_9302_drv.c @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 2011-2013. All Rights Reserved. + * Copyright Ericsson AB 2011-2014. All Rights Reserved. * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in @@ -94,7 +94,7 @@ DRIVER_INIT(otp_9302_drv) static void stop(ErlDrvData drv_data) { Otp9302Data *data = (Otp9302Data *) drv_data; - if (!data->smp) + if (data->msgq.mtx) erl_drv_mutex_destroy(data->msgq.mtx); driver_free(data); } @@ -114,13 +114,16 @@ static ErlDrvData start(ErlDrvPort port, driver_system_info(&sys_info, sizeof(ErlDrvSysInfo)); data->smp = sys_info.smp_support; + data->msgq.mtx = NULL; if (!data->smp) { data->msgq.start = NULL; data->msgq.end = NULL; - data->msgq.mtx = erl_drv_mutex_create(""); - if (!data->msgq.mtx) { - driver_free(data); - return ERL_DRV_ERROR_GENERAL; + if (sys_info.thread_support) { + data->msgq.mtx = erl_drv_mutex_create(""); + if (!data->msgq.mtx) { + driver_free(data); + return ERL_DRV_ERROR_GENERAL; + } } } @@ -143,19 +146,22 @@ static void enqueue_reply(Otp9302AsyncData *adata) Otp9302MsgQ *msgq = adata->msgq; adata->next = NULL; adata->refc++; - erl_drv_mutex_lock(msgq->mtx); + if (msgq->mtx) + erl_drv_mutex_lock(msgq->mtx); if (msgq->end) msgq->end->next = adata; else msgq->end = msgq->start = adata; msgq->end = adata; - erl_drv_mutex_unlock(msgq->mtx); + if (msgq->mtx) + erl_drv_mutex_unlock(msgq->mtx); } static void dequeue_replies(Otp9302AsyncData *adata) { Otp9302MsgQ *msgq = adata->msgq; - erl_drv_mutex_lock(msgq->mtx); + if (msgq->mtx) + erl_drv_mutex_lock(msgq->mtx); if (--adata->refc == 0) driver_free(adata); while (msgq->start) { @@ -166,7 +172,8 @@ static void dequeue_replies(Otp9302AsyncData *adata) driver_free(adata); } msgq->start = msgq->end = NULL; - erl_drv_mutex_unlock(msgq->mtx); + if (msgq->mtx) + erl_drv_mutex_unlock(msgq->mtx); } static void async_invoke(void *data) |