From e9764b843477d2a502560e3c696a1512b0eac009 Mon Sep 17 00:00:00 2001 From: Lukas Larsson Date: Mon, 22 Oct 2012 15:44:59 +0200 Subject: Add testcases for strange port scheduling scenarios --- .../test/busy_port_SUITE_data/Makefile.src | 3 +- .../test/busy_port_SUITE_data/scheduling_drv.c | 190 +++++++++++++++++++++ 2 files changed, 192 insertions(+), 1 deletion(-) create mode 100644 erts/emulator/test/busy_port_SUITE_data/scheduling_drv.c (limited to 'erts/emulator/test/busy_port_SUITE_data') diff --git a/erts/emulator/test/busy_port_SUITE_data/Makefile.src b/erts/emulator/test/busy_port_SUITE_data/Makefile.src index 664909db71..b5fcf25176 100644 --- a/erts/emulator/test/busy_port_SUITE_data/Makefile.src +++ b/erts/emulator/test/busy_port_SUITE_data/Makefile.src @@ -17,9 +17,10 @@ # %CopyrightEnd% # -all: busy_drv@dll@ hard_busy_drv@dll@ soft_busy_drv@dll@ +all: busy_drv@dll@ hard_busy_drv@dll@ soft_busy_drv@dll@ scheduling_drv@dll@ @SHLIB_RULES@ hard_busy_drv@obj@: hard_busy_drv.c hs_busy_drv.c soft_busy_drv@obj@: soft_busy_drv.c hs_busy_drv.c +scheduling_drv@obj@: scheduling_drv.c diff --git a/erts/emulator/test/busy_port_SUITE_data/scheduling_drv.c b/erts/emulator/test/busy_port_SUITE_data/scheduling_drv.c new file mode 100644 index 0000000000..57be9b6392 --- /dev/null +++ b/erts/emulator/test/busy_port_SUITE_data/scheduling_drv.c @@ -0,0 +1,190 @@ +/* + * %CopyrightBegin% + * + * Copyright Ericsson AB 2009-2011. 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 +#else +#include +#endif +#include +#include +#include "erl_driver.h" + +#define get_int32(s) ((((unsigned char*) (s))[0] << 24) | \ + (((unsigned char*) (s))[1] << 16) | \ + (((unsigned char*) (s))[2] << 8) | \ + (((unsigned char*) (s))[3])) + +#define ERTS_TEST_SCHEDULING_DRV_NAME "scheduling_drv" +#define ERTS_TEST_SCHEDULING_DRV_FLAGS \ + ERL_DRV_FLAG_USE_PORT_LOCKING | ERL_DRV_FLAG_SOFT_BUSY + +ErlDrvData start(ErlDrvPort port, char *command); +void output(ErlDrvData drv_data, char *buf, ErlDrvSizeT len); +ErlDrvSSizeT control(ErlDrvData drv_data, unsigned int command, char *buf, + ErlDrvSizeT len, char **rbuf, ErlDrvSizeT rlen); +void stop(ErlDrvData drv_data); +void timeout(ErlDrvData drv_data); + +static void delay(unsigned ms); + +static ErlDrvEntry busy_drv_entry = { + NULL /* init */, + start, + stop, + output, + NULL /* ready_input */, + NULL /* ready_output */, + ERTS_TEST_SCHEDULING_DRV_NAME, + NULL /* finish */, + NULL /* handle */, + control, + timeout, + NULL /* outputv */, + NULL /* ready_async */, + NULL /* flush */, + NULL /* call */, + NULL /* event */, + ERL_DRV_EXTENDED_MARKER, + ERL_DRV_EXTENDED_MAJOR_VERSION, + ERL_DRV_EXTENDED_MINOR_VERSION, + ERTS_TEST_SCHEDULING_DRV_FLAGS, + NULL /* handle2 */, + NULL /* handle_monitor */, + NULL /* stop_select */ +}; + +#define DBG(data,FMT) +/* #define DBG(data,FMT) printf("0x%.8lx: %s",driver_caller(data->port),FMT); */ + +typedef struct SchedDrvData { + ErlDrvPort port; + char data[255]; + int curr; + int use_auto_busy; +} SchedDrvData; + +DRIVER_INIT(busy_drv) +{ + return &busy_drv_entry; +} + +ErlDrvData start(ErlDrvPort port, char *command) +{ + SchedDrvData *d = driver_alloc(sizeof(SchedDrvData)); + d->port = port; + d->curr = 0; + d->use_auto_busy = 0; + DBG(d,"start\r\n"); + return (ErlDrvData) d; +} + +void stop(ErlDrvData drv_data) { + SchedDrvData *d = (SchedDrvData*)drv_data; + driver_output(d->port,d->data,d->curr); + DBG(d,"close\r\n"); + driver_free(d); + return; +} + +void timeout(ErlDrvData drv_data) { + SchedDrvData *d = (SchedDrvData*)drv_data; + set_busy_port(d->port, 0); + DBG(d,"timeout\r\n"); +} + +void output(ErlDrvData drv_data, char *buf, ErlDrvSizeT len) +{ + int res; + unsigned int command = *buf; + SchedDrvData *d = (SchedDrvData*)drv_data; + + switch (command) { + case 'B': /* busy */ + DBG(d,"busy: "); + set_busy_port(d->port, 1); + break; + case 'L': /* busy long call */ + DBG(d,"long: "); + delay(buf[5]*100); + set_busy_port(d->port, 1); + break; + case 'D': /* delay call */ + DBG(d,"delay: "); + delay(buf[5]*100); + break; + case 'N': /* not busy */ + DBG(d,"not"); + set_busy_port(d->port, 0); + goto done; + case 'C': /* change state */ + DBG(d,"chang: "); + break; + case 'G': /* get state */ + DBG(d,"get : "); + driver_output(d->port,d->data,d->curr); + return; + default: + driver_failure_posix((ErlDrvPort) drv_data, EINVAL); + break; + } + if (len > 1) { + unsigned int val = get_int32(buf+1); + fprintf(stderr,"%u",val); + d->data[d->curr++] = val; + } + done: + fprintf(stderr,"\r\n"); +} + +ErlDrvSSizeT control(ErlDrvData drv_data, unsigned int command, char *buf, + ErlDrvSizeT len, char **rbuf, ErlDrvSizeT rlen) +{ + switch (command) { + case 'B': /* busy */ + set_busy_port((ErlDrvPort) drv_data, 1); + break; + case 'N': /* not busy */ + set_busy_port((ErlDrvPort) drv_data, 0); + break; + default: + driver_failure_posix((ErlDrvPort) drv_data, EINVAL); + break; + } + return 0; +} + + +/* + * Delays (sleeps) the given number of milli-seconds. + */ + +static void delay(unsigned ms) +{ + fprintf(stderr,"delay(%u)",ms); +#ifdef __WIN32__ + Sleep(ms); +#else + struct timeval t; + t.tv_sec = ms/1000; + t.tv_usec = (ms % 1000) * 1000; + + select(0, NULL, NULL, NULL, &t); +#endif +} -- cgit v1.2.3