diff options
Diffstat (limited to 'erts/emulator/test/driver_SUITE_data/otp_9302_drv.c')
| -rw-r--r-- | erts/emulator/test/driver_SUITE_data/otp_9302_drv.c | 232 |
1 files changed, 232 insertions, 0 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 new file mode 100644 index 0000000000..beee1b735f --- /dev/null +++ b/erts/emulator/test/driver_SUITE_data/otp_9302_drv.c @@ -0,0 +1,232 @@ +/* + * %CopyrightBegin% + * + * Copyright Ericsson AB 2011. 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 + * compliance with the License. You should have received a copy of the + * Erlang Public License along with this software. If not, it can be + * retrieved online at http://www.erlang.org/. + * + * Software distributed under the License is distributed on an "AS IS" + * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See + * the License for the specific language governing rights and limitations + * under the License. + * + * %CopyrightEnd% + */ +#ifdef __WIN32__ +#include <windows.h> +#endif +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#include "erl_driver.h" + +static void stop(ErlDrvData drv_data); +static ErlDrvData start(ErlDrvPort port, + char *command); +static void output(ErlDrvData drv_data, + char *buf, int len); +static void ready_async(ErlDrvData drv_data, + ErlDrvThreadData thread_data); + +static ErlDrvEntry otp_9302_drv_entry = { + NULL /* init */, + start, + stop, + output, + NULL /* ready_input */, + NULL /* ready_output */, + "otp_9302_drv", + NULL /* finish */, + NULL /* handle */, + NULL /* control */, + NULL /* timeout */, + NULL /* outputv */, + ready_async, + NULL /* flush */, + NULL /* call */, + NULL /* event */, + ERL_DRV_EXTENDED_MARKER, + ERL_DRV_EXTENDED_MAJOR_VERSION, + ERL_DRV_EXTENDED_MINOR_VERSION, + ERL_DRV_FLAG_USE_PORT_LOCKING, + NULL /* handle2 */, + NULL /* handle_monitor */ +}; + +typedef struct Otp9302AsyncData_ Otp9302AsyncData; + +typedef struct { + ErlDrvMutex *mtx; + Otp9302AsyncData *start; + Otp9302AsyncData *end; +} Otp9302MsgQ; + +typedef struct { + ErlDrvPort port; + int smp; + Otp9302MsgQ msgq; +} Otp9302Data; + +struct Otp9302AsyncData_ { + Otp9302AsyncData *next; + ErlDrvPort port; + int smp; + int refc; + int block; + struct { + ErlDrvTermData port; + ErlDrvTermData receiver; + ErlDrvTermData msg; + } term_data; + Otp9302MsgQ *msgq; +}; + + +DRIVER_INIT(otp_9302_drv) +{ + return &otp_9302_drv_entry; +} + +static void stop(ErlDrvData drv_data) +{ + Otp9302Data *data = (Otp9302Data *) drv_data; + if (!data->smp) + erl_drv_mutex_destroy(data->msgq.mtx); + driver_free(data); +} + +static ErlDrvData start(ErlDrvPort port, + char *command) +{ + Otp9302Data *data; + ErlDrvSysInfo sys_info; + + data = driver_alloc(sizeof(Otp9302Data)); + if (!data) + return ERL_DRV_ERROR_GENERAL; + + data->port = port; + + driver_system_info(&sys_info, sizeof(ErlDrvSysInfo)); + data->smp = sys_info.smp_support; + + 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; + } + } + + return (ErlDrvData) data; +} + +static void send_reply(Otp9302AsyncData *adata) +{ + ErlDrvTermData spec[] = { + ERL_DRV_PORT, adata->term_data.port, + ERL_DRV_ATOM, adata->term_data.msg, + ERL_DRV_TUPLE, 2 + }; + driver_send_term(adata->port, adata->term_data.receiver, + spec, sizeof(spec)/sizeof(spec[0])); +} + +static void enqueue_reply(Otp9302AsyncData *adata) +{ + Otp9302MsgQ *msgq = adata->msgq; + adata->next = NULL; + adata->refc++; + 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); +} + +static void dequeue_replies(Otp9302AsyncData *adata) +{ + Otp9302MsgQ *msgq = adata->msgq; + erl_drv_mutex_lock(msgq->mtx); + if (--adata->refc == 0) + driver_free(adata); + while (msgq->start) { + send_reply(msgq->start); + adata = msgq->start; + msgq->start = msgq->start->next; + if (--adata->refc == 0) + driver_free(adata); + } + msgq->start = msgq->end = NULL; + erl_drv_mutex_unlock(msgq->mtx); +} + +static void async_invoke(void *data) +{ + Otp9302AsyncData *adata = (Otp9302AsyncData *) data; + if (adata->block) { +#ifdef __WIN32__ + Sleep((DWORD) 2000); +#else + sleep(2); +#endif + } + if (adata->smp) + send_reply(adata); + else + enqueue_reply(adata); +} + +static void ready_async(ErlDrvData drv_data, + ErlDrvThreadData thread_data) +{ + Otp9302AsyncData *adata = (Otp9302AsyncData *) thread_data; + if (adata->smp) + driver_free(adata); + else + dequeue_replies(adata); +} + +static void output(ErlDrvData drv_data, + char *buf, int len) +{ + Otp9302Data *data = (Otp9302Data *) drv_data; + ErlDrvTermData td_port = driver_mk_port(data->port); + ErlDrvTermData td_receiver = driver_caller(data->port); + ErlDrvTermData td_job = driver_mk_atom("job"); + unsigned int key = (unsigned int) data->port; + long id[5]; + Otp9302AsyncData *ad[5]; + int i; + + for (i = 0; i < sizeof(ad)/sizeof(ad[0]); i++) { + ad[i] = driver_alloc(sizeof(Otp9302AsyncData)); + if (!ad[i]) + abort(); + + ad[i]->smp = data->smp; + ad[i]->port = data->port; + ad[i]->block = 0; + ad[i]->refc = 1; + ad[i]->term_data.port = td_port; + ad[i]->term_data.receiver = td_receiver; + ad[i]->term_data.msg = td_job; + ad[i]->msgq = &data->msgq; + } + ad[0]->block = 1; + ad[0]->term_data.msg = driver_mk_atom("block"); + ad[2]->term_data.msg = driver_mk_atom("cancel"); + ad[4]->term_data.msg = driver_mk_atom("end_of_jobs"); + for (i = 0; i < sizeof(id)/sizeof(id[0]); i++) + id[i] = driver_async(data->port, &key, async_invoke, ad[i], driver_free); + if (id[2] > 0) + driver_async_cancel(id[2]); +} |