diff options
Diffstat (limited to 'erts/emulator/test')
| -rw-r--r-- | erts/emulator/test/Makefile | 1 | ||||
| -rw-r--r-- | erts/emulator/test/mtx_SUITE.erl | 473 | ||||
| -rw-r--r-- | erts/emulator/test/mtx_SUITE_data/Makefile.src | 30 | ||||
| -rw-r--r-- | erts/emulator/test/mtx_SUITE_data/mtx_SUITE.c | 692 |
4 files changed, 1196 insertions, 0 deletions
diff --git a/erts/emulator/test/Makefile b/erts/emulator/test/Makefile index a4c02da626..7259e1b84d 100644 --- a/erts/emulator/test/Makefile +++ b/erts/emulator/test/Makefile @@ -83,6 +83,7 @@ MODULES= \ receive_SUITE \ ref_SUITE \ register_SUITE \ + mtx_SUITE \ save_calls_SUITE \ send_term_SUITE \ sensitive_SUITE \ diff --git a/erts/emulator/test/mtx_SUITE.erl b/erts/emulator/test/mtx_SUITE.erl new file mode 100644 index 0000000000..ae77fe4d89 --- /dev/null +++ b/erts/emulator/test/mtx_SUITE.erl @@ -0,0 +1,473 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2010. 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% +%% + +%% +%% Stress tests of rwmutex implementation. +%% +%% Author: Rickard Green +%% +-module(mtx_SUITE). + +%%-define(line_trace,true). + +-include("test_server.hrl"). + +-export([all/1, init_per_suite/1, end_per_suite/1, init_per_testcase/2, fin_per_testcase/2]). + +-export([long_rwlock/1, + hammer_ets_rwlock/1, + hammer_rwlock/1, + hammer_rwlock_check/1, + hammer_tryrwlock/1, + hammer_tryrwlock_check/1, + hammer_sched_long_rwlock/1, + hammer_sched_long_rwlock_check/1, + hammer_sched_long_freqread_rwlock/1, + hammer_sched_long_freqread_rwlock_check/1, + hammer_sched_long_tryrwlock/1, + hammer_sched_long_tryrwlock_check/1, + hammer_sched_long_freqread_tryrwlock/1, + hammer_sched_long_freqread_tryrwlock_check/1, + hammer_sched_rwlock/1, + hammer_sched_rwlock_check/1, + hammer_sched_freqread_rwlock/1, + hammer_sched_freqread_rwlock_check/1, + hammer_sched_tryrwlock/1, + hammer_sched_tryrwlock_check/1, + hammer_sched_freqread_tryrwlock/1, + hammer_sched_freqread_tryrwlock_check/1]). + +init_per_suite(Config) when is_list(Config) -> + DataDir = ?config(data_dir, Config), + Lib = filename:join([DataDir, atom_to_list(?MODULE)]), + ok = erlang:load_nif(Lib, none), + Config. + +end_per_suite(Config) when is_list(Config) -> + Config. + +init_per_testcase(_Case, Config) -> + Dog = ?t:timetrap(?t:minutes(15)), + [{watchdog, Dog}|Config]. + +fin_per_testcase(_Func, Config) -> + Dog = ?config(watchdog, Config), + ?t:timetrap_cancel(Dog). + +all(suite) -> + [ + long_rwlock, + hammer_rwlock_check, + hammer_rwlock, + hammer_tryrwlock_check, + hammer_tryrwlock, + hammer_ets_rwlock, + hammer_sched_long_rwlock_check, + hammer_sched_long_rwlock, + hammer_sched_long_freqread_rwlock_check, + hammer_sched_long_freqread_rwlock, + hammer_sched_long_tryrwlock_check, + hammer_sched_long_tryrwlock, + hammer_sched_long_freqread_tryrwlock_check, + hammer_sched_long_freqread_tryrwlock, + hammer_sched_rwlock_check, + hammer_sched_rwlock, + hammer_sched_freqread_rwlock_check, + hammer_sched_freqread_rwlock, + hammer_sched_tryrwlock_check, + hammer_sched_tryrwlock, + hammer_sched_freqread_tryrwlock_check, + hammer_sched_freqread_tryrwlock + ]. + +long_rwlock(Config) when is_list(Config) -> + statistics(runtime), + LLRes = long_rw_test(), + {_, RunTime} = statistics(runtime), + %% A very short run time is expected, since + %% threads in the test mostly wait + ?t:format("RunTime=~p~n", [RunTime]), + ?line true = RunTime < 100, + ?line RunTimeStr = "Run-time during test was "++integer_to_list(RunTime)++" ms.", + case LLRes of + ok -> + {comment, RunTimeStr}; + {comment, Comment} -> + {comment, Comment ++ " " ++ RunTimeStr} + end. + +hammer_rwlock(Config) when is_list(Config) -> + hammer_rw_test(false). + +hammer_rwlock_check(Config) when is_list(Config) -> + hammer_rw_test(true). + +hammer_tryrwlock(Config) when is_list(Config) -> + hammer_tryrw_test(false). + +hammer_tryrwlock_check(Config) when is_list(Config) -> + hammer_tryrw_test(true). + +hammer_sched_rwlock(Config) when is_list(Config) -> + hammer_sched_rwlock_test(false, false, true, 0, 0). + +hammer_sched_rwlock_check(Config) when is_list(Config) -> + hammer_sched_rwlock_test(false, true, true, 0, 0). + +hammer_sched_freqread_rwlock(Config) when is_list(Config) -> + hammer_sched_rwlock_test(true, false, true, 0, 0). + +hammer_sched_freqread_rwlock_check(Config) when is_list(Config) -> + hammer_sched_rwlock_test(true, true, true, 0, 0). + +hammer_sched_tryrwlock(Config) when is_list(Config) -> + hammer_sched_rwlock_test(false, false, false, 0, 100). + +hammer_sched_tryrwlock_check(Config) when is_list(Config) -> + hammer_sched_rwlock_test(false, true, false, 0, 100). + +hammer_sched_freqread_tryrwlock(Config) when is_list(Config) -> + hammer_sched_rwlock_test(true, false, false, 0, 100). + +hammer_sched_freqread_tryrwlock_check(Config) when is_list(Config) -> + hammer_sched_rwlock_test(true, true, false, 0, 100). + +hammer_sched_long_rwlock(Config) when is_list(Config) -> + hammer_sched_rwlock_test(false, false, true, 100, 0). + +hammer_sched_long_rwlock_check(Config) when is_list(Config) -> + hammer_sched_rwlock_test(false, true, true, 100, 0). + +hammer_sched_long_freqread_rwlock(Config) when is_list(Config) -> + hammer_sched_rwlock_test(true, false, true, 100, 0). + +hammer_sched_long_freqread_rwlock_check(Config) when is_list(Config) -> + hammer_sched_rwlock_test(true, true, true, 100, 0). + +hammer_sched_long_tryrwlock(Config) when is_list(Config) -> + hammer_sched_rwlock_test(false, false, false, 100, 100). + +hammer_sched_long_tryrwlock_check(Config) when is_list(Config) -> + hammer_sched_rwlock_test(false, true, false, 100, 100). + +hammer_sched_long_freqread_tryrwlock(Config) when is_list(Config) -> + hammer_sched_rwlock_test(true, false, false, 100, 100). + +hammer_sched_long_freqread_tryrwlock_check(Config) when is_list(Config) -> + hammer_sched_rwlock_test(true, true, false, 100, 100). + +hammer_sched_rwlock_test(FreqRead, LockCheck, Blocking, WaitLocked, WaitUnlocked) -> + case create_rwlock(FreqRead, LockCheck) of + enotsup -> + {skipped, "Not supported."}; + RWLock -> + Onln = erlang:system_info(schedulers_online), + NWPs = case Onln div 3 of + 1 -> case Onln < 4 of + true -> 1; + false -> 2 + end; + X -> X + end, + NRPs = Onln - NWPs, + NoLockOps = ((((50000000 div Onln) + div case {Blocking, WaitLocked} of + {false, 0} -> 1; + _ -> 10 + end) + div (case WaitLocked == 0 of + true -> 1; + false -> WaitLocked*250 + end)) + div handicap()), + ?t:format("NoLockOps=~p~n", [NoLockOps]), + Sleep = case Blocking of + true -> NoLockOps; + false -> NoLockOps div 10 + end, + WPs = lists:map( + fun (Sched) -> + spawn_opt( + fun () -> + io:format("Writer on scheduler ~p.~n", + [Sched]), + Sched = erlang:system_info(scheduler_id), + receive go -> gone end, + hammer_sched_rwlock_proc(RWLock, + Blocking, + true, + WaitLocked, + WaitUnlocked, + NoLockOps, + Sleep), + Sched = erlang:system_info(scheduler_id) + end, + [link, {scheduler, Sched}]) + end, + lists:seq(1, NWPs)), + RPs = lists:map( + fun (Sched) -> + spawn_opt( + fun () -> + io:format("Reader on scheduler ~p.~n", + [Sched]), + Sched = erlang:system_info(scheduler_id), + receive go -> gone end, + hammer_sched_rwlock_proc(RWLock, + Blocking, + false, + WaitLocked, + WaitUnlocked, + NoLockOps, + Sleep), + Sched = erlang:system_info(scheduler_id) + end, + [link, {scheduler, Sched}]) + end, + lists:seq(NWPs + 1, NWPs + NRPs)), + Procs = WPs ++ RPs, + case {Blocking, WaitLocked} of + {_, 0} -> ok; + {false, _} -> ok; + _ -> statistics(runtime) + end, + lists:foreach(fun (P) -> P ! go end, Procs), + lists:foreach(fun (P) -> + M = erlang:monitor(process, P), + receive + {'DOWN', M, process, P, _} -> + ok + end + end, + Procs), + case {Blocking, WaitLocked} of + {_, 0} -> ok; + {false, _} -> ok; + _ -> + {_, RunTime} = statistics(runtime), + ?t:format("RunTime=~p~n", [RunTime]), + ?line true = RunTime < 500, + {comment, + "Run-time during test was " + ++ integer_to_list(RunTime) + ++ " ms."} + end + end. + +hammer_sched_rwlock_proc(_RWLock, + _Blocking, + _WriteOp, + _WaitLocked, + _WaitUnlocked, + 0, + _Sleep) -> + ok; +hammer_sched_rwlock_proc(RWLock, + Blocking, + WriteOp, + WaitLocked, + WaitUnlocked, + Times, + Sleep) when Times rem Sleep == 0 -> + rwlock_op(RWLock, Blocking, WriteOp, WaitLocked, WaitUnlocked), + hammer_sched_rwlock_proc(RWLock, + Blocking, + WriteOp, + WaitLocked, + WaitUnlocked, + Times - 1, + Sleep); +hammer_sched_rwlock_proc(RWLock, + Blocking, + WriteOp, + WaitLocked, + WaitUnlocked, + Times, + Sleep) -> + rwlock_op(RWLock, Blocking, WriteOp, WaitLocked, 0), + hammer_sched_rwlock_proc(RWLock, + Blocking, + WriteOp, + WaitLocked, + WaitUnlocked, + Times - 1, + Sleep). + +-define(HAMMER_ETS_RWLOCK_REPEAT_TIMES, 1). +-define(HAMMER_ETS_RWLOCK_TSIZE, 500). + +hammer_ets_rwlock(Config) when is_list(Config) -> + {Ops, Procs} = case handicap() of + 1 -> {20000, 500}; + 2 -> {20000, 50}; + 3 -> {2000, 50}; + _ -> {200, 50} + end, + ?t:format("Procs=~p~nOps=~p~n", [Procs, Ops]), + lists:foreach(fun (XOpts) -> + ?t:format("Running with extra opts: ~p", [XOpts]), + hammer_ets_rwlock_test(XOpts, true, 2, Ops, + Procs, false) + end, + [[], + [{read_concurrency, true}], + [{write_concurrency, true}], + [{read_concurrency, true},{write_concurrency, true}]]), + ok. + +%% Aux funcs + +long_rw_test() -> + exit(no_nif_implementation). + +hammer_rw_test(_Arg) -> + exit(no_nif_implementation). + +hammer_tryrw_test(_Arg) -> + exit(no_nif_implementation). + +create_rwlock(_FreqRead, _LockCheck) -> + exit(no_nif_implementation). + +rwlock_op(_RWLock, _Blocking, _WriteOp, _WaitLocked, _WaitUnlocked) -> + exit(no_nif_implementation). + +hammer_ets_rwlock_put_data() -> + put(?MODULE, {"here are some", data, "to store", make_ref()}). + +hammer_ets_rwlock_get_data() -> + get(?MODULE). + +hammer_ets_rwlock_ops(_T, _UW, _N, _C, _SC, 0) -> + ok; +hammer_ets_rwlock_ops(T, UW, N, C, SC, Tot) when N >= ?HAMMER_ETS_RWLOCK_TSIZE -> + hammer_ets_rwlock_ops(T, UW, 0, C, SC, Tot); +hammer_ets_rwlock_ops(T, UW, N, 0, SC, Tot) -> + case UW of + true -> + true = ets:insert(T, {N, Tot, hammer_ets_rwlock_get_data()}); + false -> + [{N, _, _}] = ets:lookup(T, N) + end, + hammer_ets_rwlock_ops(T, UW, N+1, SC, SC, Tot-1); +hammer_ets_rwlock_ops(T, UW, N, C, SC, Tot) -> + case UW of + false -> + true = ets:insert(T, {N, Tot, hammer_ets_rwlock_get_data()}); + true -> + [{N, _, _}] = ets:lookup(T, N) + end, + hammer_ets_rwlock_ops(T, UW, N+1, C-1, SC, Tot-1). + +hammer_ets_rwlock_init(T, N) when N < ?HAMMER_ETS_RWLOCK_TSIZE -> + ets:insert(T, {N, N, N}), + hammer_ets_rwlock_init(T, N+1); +hammer_ets_rwlock_init(_T, _N) -> + ok. + +hammer_ets_rwlock_test(XOpts, UW, C, N, NP, SC) -> + receive after 100 -> ok end, + {TP, TM} = spawn_monitor( + fun () -> + _L = repeat_list( + fun () -> + Caller = self(), + T = fun () -> + Parent = self(), + hammer_ets_rwlock_put_data(), + T=ets:new(x, [public | XOpts]), + hammer_ets_rwlock_init(T, 0), + Ps0 = repeat_list( + fun () -> + spawn_link( + fun () -> + hammer_ets_rwlock_put_data(), + receive go -> ok end, + hammer_ets_rwlock_ops(T, UW, N, C, C, N), + Parent ! {done, self()}, + receive after infinity -> ok end + end) + end, + NP - case SC of + false -> 0; + _ -> 1 + end), + Ps = case SC of + false -> Ps0; + _ -> [spawn_link(fun () -> + hammer_ets_rwlock_put_data(), + receive go -> ok end, + hammer_ets_rwlock_ops(T, UW, N, SC, SC, N), + Parent ! {done, self()}, + receive after infinity -> ok end + end) | Ps0] + end, + Start = now(), + lists:foreach(fun (P) -> P ! go end, Ps), + lists:foreach(fun (P) -> receive {done, P} -> ok end end, Ps), + Stop = now(), + lists:foreach(fun (P) -> + unlink(P), + exit(P, bang), + M = erlang:monitor(process, P), + receive + {'DOWN', M, process, P, _} -> ok + end + end, Ps), + Res = timer:now_diff(Stop, Start)/1000000, + Caller ! {?MODULE, self(), Res} + end, + TP = spawn_link(T), + receive + {?MODULE, TP, Res} -> + Res + end + end, + ?HAMMER_ETS_RWLOCK_REPEAT_TIMES) + end), + receive + {'DOWN', TM, process, TP, _} -> ok + end. + +repeat_list(Fun, N) -> + repeat_list(Fun, N, []). + +repeat_list(_Fun, 0, Acc) -> + Acc; +repeat_list(Fun, N, Acc) -> + repeat_list(Fun, N-1, [Fun()|Acc]). + + +handicap() -> + X0 = case catch (erlang:system_info(logical_processors_available) >= + erlang:system_info(schedulers_online)) of + true -> 1; + _ -> 2 + end, + case erlang:system_info(build_type) of + opt -> + X0; + ReallySlow when ReallySlow == debug; + ReallySlow == valgrind; + ReallySlow == purify -> + X0*3; + _Slow -> + X0*2 + end. + diff --git a/erts/emulator/test/mtx_SUITE_data/Makefile.src b/erts/emulator/test/mtx_SUITE_data/Makefile.src new file mode 100644 index 0000000000..b6c843269c --- /dev/null +++ b/erts/emulator/test/mtx_SUITE_data/Makefile.src @@ -0,0 +1,30 @@ +# +# %CopyrightBegin% +# +# Copyright Ericsson AB 2010. 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% +# + +include @erts_lib_include_internal_generated@@[email protected] +include @erts_lib_include_internal_generated@@DS@erts_internal.mk + +NIF_LIBS = mtx_SUITE@dll@ + +SHLIB_EXTRA_CFLAGS = $(ETHR_DEFS) -I@erts_lib_include_internal@ -I@erts_lib_include_internal_generated@ +LIBS = @ERTS_LIBS@ + +all: $(NIF_LIBS) + +@SHLIB_RULES@ diff --git a/erts/emulator/test/mtx_SUITE_data/mtx_SUITE.c b/erts/emulator/test/mtx_SUITE_data/mtx_SUITE.c new file mode 100644 index 0000000000..818023211c --- /dev/null +++ b/erts/emulator/test/mtx_SUITE_data/mtx_SUITE.c @@ -0,0 +1,692 @@ +/* + * %CopyrightBegin% + * + * Copyright Ericsson AB 2010. 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% + */ + +/* + * Stress tests of rwmutex implementation. + * + * Author: Rickard Green + */ + +#include "erl_nif.h" + +#ifdef __WIN32__ +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include <windows.h> +#else +# include "ethread.h" +# include "erl_misc_utils.h" +# include <unistd.h> +#endif + +#include <errno.h> +#include <stdio.h> + +static int +fail(const char *file, int line, const char *function, const char *assertion); + +#undef ASSERT +#define ASSERT(X) ((void) ((X) ? 1 : fail(__FILE__, __LINE__, __func__, #X))) + +#ifdef __WIN32__ +/* + * We cannot access the ethread symbols directly; test + * what we got in the nif api instead... + */ +#define HAVE_FREQREAD_SUPPORT 0 +#define RWMUTEX_T ErlNifRWLock +#define RWMUTEX_CREATE(FR) enif_rwlock_create("dummy") +#define RWMUTEX_DESTROY enif_rwlock_destroy +#define RWMUTEX_WLOCK enif_rwlock_rwlock +#define RWMUTEX_TRYWLOCK enif_rwlock_tryrwlock +#define RWMUTEX_WUNLOCK enif_rwlock_rwunlock +#define RWMUTEX_TRYRLOCK enif_rwlock_tryrlock +#define RWMUTEX_RLOCK enif_rwlock_rlock +#define RWMUTEX_RUNLOCK enif_rwlock_runlock +#define THR_ID ErlNifTid +#define THR_CREATE(A, B, C, D) enif_thread_create("dummy", (A), (B), (C), (D)) +#define THR_JOIN enif_thread_join +#define ATOMIC_T volatile LONG +#define ATOMIC_INIT(VarP, Val) (*(VarP) = (Val)) +#define ATOMIC_SET(VarP, Val) (*(VarP) = (Val)) +#define ATOMIC_READ(VarP) (*(VarP)) +#define ATOMIC_INC InterlockedIncrement +#define ATOMIC_DEC InterlockedDecrement + +#else + +#ifdef ETHR_USE_OWN_RWMTX_IMPL__ +# define HAVE_FREQREAD_SUPPORT 1 +#else +# define HAVE_FREQREAD_SUPPORT 0 +#endif + +#define RWMUTEX_T ethr_rwmutex +static ethr_rwmutex * +RWMUTEX_CREATE(int freqread) +{ + ethr_rwmutex *rwmtx = enif_alloc(sizeof(ethr_rwmutex)); + ethr_rwmutex_opt rwmtx_opt = ETHR_RWMUTEX_OPT_DEFAULT_INITER; + if (freqread) + rwmtx_opt.type = ETHR_RWMUTEX_TYPE_FREQUENT_READ; + ASSERT(rwmtx); + ASSERT(ethr_rwmutex_init_opt(rwmtx, &rwmtx_opt) == 0); + return rwmtx; +} +static void +RWMUTEX_DESTROY(ethr_rwmutex *rwmtx) +{ + ASSERT(ethr_rwmutex_destroy(rwmtx) == 0); + enif_free(rwmtx); +} +#define RWMUTEX_TRYWLOCK ethr_rwmutex_tryrwlock +#define RWMUTEX_WLOCK ethr_rwmutex_rwlock +#define RWMUTEX_WUNLOCK ethr_rwmutex_rwunlock +#define RWMUTEX_TRYRLOCK ethr_rwmutex_tryrlock +#define RWMUTEX_RLOCK ethr_rwmutex_rlock +#define RWMUTEX_RUNLOCK ethr_rwmutex_runlock +#define THR_ID ethr_tid +#define THR_CREATE ethr_thr_create +#define THR_JOIN ethr_thr_join +#define ATOMIC_T ethr_atomic_t +#define ATOMIC_INIT ethr_atomic_init +#define ATOMIC_SET ethr_atomic_set +#define ATOMIC_READ ethr_atomic_read +#define ATOMIC_INC ethr_atomic_inc +#define ATOMIC_DEC ethr_atomic_dec + +#endif + + +#if !defined(__func__) +# if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L +# if !defined(__GNUC__) || __GNUC__ < 2 +# define __func__ "[unknown_function]" +# else +# define __func__ __FUNCTION__ +# endif +# endif +#endif + +static void milli_sleep(int ms); +static int get_bool(ErlNifEnv* env, ERL_NIF_TERM term); + +/* + * Long rwlock testcase + */ + +#define LONG_RW_NO_W_THREADS 6 +#define LONG_RW_NO_THREADS 20 +#define LONG_RW_NO_WLOCK_COUNT 100 + +typedef struct { + RWMUTEX_T *rwlock; + ATOMIC_T *is_wlocked; + ATOMIC_T *is_rlocked; + int *stop; + int *count; + int sleep; +} long_rw_t; + +static void * +long_rw_w(void *varg) +{ + long_rw_t *arg = varg; + int stop = 0; + do { + RWMUTEX_WLOCK(arg->rwlock); + ASSERT(!ATOMIC_READ(arg->is_wlocked)); + ATOMIC_SET(arg->is_wlocked, 1); + ASSERT(!ATOMIC_READ(arg->is_rlocked)); + milli_sleep(arg->sleep); + if (++(*arg->count) > LONG_RW_NO_WLOCK_COUNT) + stop = *arg->stop = 1; + ATOMIC_SET(arg->is_wlocked, 0); + ASSERT(!ATOMIC_READ(arg->is_rlocked)); + RWMUTEX_WUNLOCK(arg->rwlock); + } while (!stop); + return NULL; +} + +static void * +long_rw_r(void *varg) +{ + long_rw_t *arg = varg; + int stop; + do { + RWMUTEX_RLOCK(arg->rwlock); + ASSERT(!ATOMIC_READ(arg->is_wlocked)); + ATOMIC_INC(arg->is_rlocked); + milli_sleep(arg->sleep); + stop = *arg->stop; + ATOMIC_DEC(arg->is_rlocked); + ASSERT(!ATOMIC_READ(arg->is_wlocked)); + RWMUTEX_RUNLOCK(arg->rwlock); + } while (!stop); + return NULL; +} + + +static ERL_NIF_TERM long_rw_test(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) +{ + int res, freqread, i, count, stop; + ATOMIC_T is_wlocked, is_rlocked; + THR_ID tid[LONG_RW_NO_THREADS]; + long_rw_t arg; + long_rw_t targ[LONG_RW_NO_THREADS]; + + ATOMIC_INIT(&is_wlocked, 0); + ATOMIC_INIT(&is_rlocked, 0); + + freqread = 0; + + arg.is_wlocked = &is_wlocked; + arg.is_rlocked = &is_rlocked; + arg.count = &count; + arg.stop = &stop; + + restart: + + stop = 0; + count = 0; + + arg.rwlock = RWMUTEX_CREATE(freqread); + + ASSERT(arg.rwlock); + + for (i = 0; i < LONG_RW_NO_W_THREADS; i++) { + targ[i] = arg; + targ[i].sleep = 100 + i*10; + ASSERT(THR_CREATE(&tid[i], long_rw_w, &targ[i], NULL) == 0); + } + for (; i < LONG_RW_NO_THREADS; i++) { + targ[i] = arg; + targ[i].sleep = 100; + ASSERT(THR_CREATE(&tid[i], long_rw_r, &targ[i], NULL) == 0); + } + for (i = 0; i < LONG_RW_NO_THREADS; i++) + ASSERT(THR_JOIN(tid[i], NULL) == 0); + + ASSERT(!ATOMIC_READ(arg.is_wlocked)); + ASSERT(!ATOMIC_READ(arg.is_rlocked)); + + RWMUTEX_DESTROY(arg.rwlock); + + if (HAVE_FREQREAD_SUPPORT && !freqread) { + freqread = 1; + goto restart; + } + + if (freqread) + return enif_make_atom(env, "ok"); + else + return enif_make_tuple2(env, + enif_make_atom(env, + "comment"), + enif_make_string(env, + "No frequent read test made.", + ERL_NIF_LATIN1)); +} + +/* + * Hammer rwlock testcase + */ + +#define HAMMER_RW_NO_W_THREADS 6 +#define HAMMER_RW_NO_THREADS 20 +#define HAMMER_RW_NO_WLOCK_COUNT 1000000 + +typedef struct { + RWMUTEX_T *rwlock; + ATOMIC_T is_locked; + int lock_check; + int stop; + int count; +} hammer_rw_t; + +static void * +hammer_rw_w(void *varg) +{ + hammer_rw_t *arg = varg; + int stop = 0; + do { + RWMUTEX_WLOCK(arg->rwlock); + if (arg->lock_check) { + ASSERT(!ATOMIC_READ(&arg->is_locked)); + ATOMIC_SET(&arg->is_locked, -1); + } + if (++arg->count > HAMMER_RW_NO_WLOCK_COUNT) + stop = arg->stop = 1; + if (arg->lock_check) { + ASSERT(ATOMIC_READ(&arg->is_locked) == -1); + ATOMIC_SET(&arg->is_locked, 0); + } + RWMUTEX_WUNLOCK(arg->rwlock); + } while (!stop); + return NULL; +} + +static void * +hammer_rw_r(void *varg) +{ + hammer_rw_t *arg = varg; + int stop; + do { + RWMUTEX_RLOCK(arg->rwlock); + if (arg->lock_check) { + ASSERT(ATOMIC_READ(&arg->is_locked) >= 0); + ATOMIC_INC(&arg->is_locked); + } + stop = arg->stop; + if (arg->lock_check) { + ASSERT(ATOMIC_READ(&arg->is_locked) > 0); + ATOMIC_DEC(&arg->is_locked); + } + RWMUTEX_RUNLOCK(arg->rwlock); + } while (!stop); + return NULL; +} + + +static ERL_NIF_TERM hammer_rw_test(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) +{ + hammer_rw_t arg; + char buf[10]; + int res, freqread, i; + THR_ID tid[HAMMER_RW_NO_THREADS]; + + if (argc != 1) + goto badarg; + + arg.lock_check = get_bool(env, argv[0]); + if (arg.lock_check < 0) + goto badarg; + + ATOMIC_INIT(&arg.is_locked, 0); + + freqread = 0; + + restart: + arg.stop = 0; + arg.count = 0; + + arg.rwlock = RWMUTEX_CREATE(freqread); + + ASSERT(arg.rwlock); + + for (i = 0; i < HAMMER_RW_NO_W_THREADS; i++) + ASSERT(THR_CREATE(&tid[i], hammer_rw_w, &arg, NULL) == 0); + for (; i < HAMMER_RW_NO_THREADS; i++) + ASSERT(THR_CREATE(&tid[i], hammer_rw_r, &arg, NULL) == 0); + for (i = 0; i < HAMMER_RW_NO_THREADS; i++) + ASSERT(THR_JOIN(tid[i], NULL) == 0); + + ASSERT(!ATOMIC_READ(&arg.is_locked)); + + RWMUTEX_DESTROY(arg.rwlock); + + if (HAVE_FREQREAD_SUPPORT && !freqread) { + freqread = 1; + goto restart; + } + + if (freqread) + return enif_make_atom(env, "ok"); + else + return enif_make_tuple2(env, + enif_make_atom(env, + "comment"), + enif_make_string(env, + "No frequent read test made.", + ERL_NIF_LATIN1)); + badarg: + return enif_make_badarg(env); +} + +/* + * Hammer try rwlock testcase + */ + +#define HAMMER_TRYRW_NO_W_THREADS 10 +#define HAMMER_TRYRW_NO_THREADS 20 +#define HAMMER_TRYRW_NO_WLOCK_COUNT 10000000 +#define HAMMER_TRYRW_NO_RLOCK_COUNT 10000000 +#define HAMMER_TRYRW_NO_WLOCK_WAIT_COUNT ((10*HAMMER_TRYRW_NO_WLOCK_COUNT)/8) +#define HAMMER_TRYRW_NO_RLOCK_WAIT_COUNT ((10*HAMMER_TRYRW_NO_RLOCK_COUNT)/8) + +typedef struct { + RWMUTEX_T *rwlock; + ATOMIC_T is_locked; + int lock_check; + int w_count; + ATOMIC_T r_count; +} hammer_tryrw_t; + +static void * +hammer_tryrw_w(void *varg) +{ + hammer_tryrw_t *arg = varg; + int stop = 0; + int wait = 0; + do { + while (EBUSY == RWMUTEX_TRYWLOCK(arg->rwlock)); + if (arg->lock_check) { + ASSERT(!ATOMIC_READ(&arg->is_locked)); + ATOMIC_SET(&arg->is_locked, -1); + } + if (++arg->w_count > HAMMER_TRYRW_NO_WLOCK_COUNT) + stop = 1; + else if (arg->w_count > HAMMER_TRYRW_NO_RLOCK_WAIT_COUNT) + wait = 1; + if (arg->lock_check) { + ASSERT(ATOMIC_READ(&arg->is_locked) == -1); + ATOMIC_SET(&arg->is_locked, 0); + } + RWMUTEX_WUNLOCK(arg->rwlock); + if (wait) + milli_sleep(1); + } while (!stop); + return NULL; +} + +static void * +hammer_tryrw_r(void *varg) +{ + hammer_tryrw_t *arg = varg; + long r_count; + int stop = 0; + int wait = 0; + do { + while (EBUSY == RWMUTEX_TRYRLOCK(arg->rwlock)); + if (arg->lock_check) { + ASSERT(ATOMIC_READ(&arg->is_locked) >= 0); + ATOMIC_INC(&arg->is_locked); + } + ATOMIC_INC(&arg->r_count); + r_count = ATOMIC_READ(&arg->r_count); + if (r_count > HAMMER_TRYRW_NO_RLOCK_COUNT) + stop = 1; + else if (r_count > HAMMER_TRYRW_NO_RLOCK_WAIT_COUNT) + wait = 1; + if (arg->lock_check) { + ASSERT(ATOMIC_READ(&arg->is_locked) > 0); + ATOMIC_DEC(&arg->is_locked); + } + RWMUTEX_RUNLOCK(arg->rwlock); + if (wait) + milli_sleep(1); + } while (!stop); + return NULL; +} + + +static ERL_NIF_TERM hammer_tryrw_test(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) +{ + hammer_tryrw_t arg; + char buf[10]; + int res, freqread, i; + THR_ID tid[HAMMER_TRYRW_NO_THREADS]; + + if (argc != 1) + goto badarg; + + arg.lock_check = get_bool(env, argv[0]); + if (arg.lock_check < 0) + goto badarg; + + ATOMIC_INIT(&arg.is_locked, 0); + freqread = 0; + + restart: + + arg.w_count = 0; + ATOMIC_INIT(&arg.r_count, 0); + + arg.rwlock = RWMUTEX_CREATE(freqread); + + ASSERT(arg.rwlock); + + for (i = 0; i < HAMMER_TRYRW_NO_W_THREADS; i++) + ASSERT(THR_CREATE(&tid[i], hammer_tryrw_w, &arg, NULL) == 0); + for (; i < HAMMER_TRYRW_NO_THREADS; i++) + ASSERT(THR_CREATE(&tid[i], hammer_tryrw_r, &arg, NULL) == 0); + for (i = 0; i < HAMMER_TRYRW_NO_THREADS; i++) + ASSERT(THR_JOIN(tid[i], NULL) == 0); + + ASSERT(!ATOMIC_READ(&arg.is_locked)); + + RWMUTEX_DESTROY(arg.rwlock); + + if (HAVE_FREQREAD_SUPPORT && !freqread) { + freqread = 1; + goto restart; + } + + if (freqread) + return enif_make_atom(env, "ok"); + else + return enif_make_tuple2(env, + enif_make_atom(env, + "comment"), + enif_make_string(env, + "No frequent read test made.", + ERL_NIF_LATIN1)); + badarg: + return enif_make_badarg(env); +} + +typedef struct { + int lock_check; + ATOMIC_T is_locked; + RWMUTEX_T *rwlock; +} rwlock_resource_t; + +static void +rwlock_destructor(ErlNifEnv* env, void* obj) +{ + rwlock_resource_t *rwlr = obj; + if (rwlr->lock_check) + ASSERT(!ATOMIC_READ(&rwlr->is_locked)); + RWMUTEX_DESTROY(rwlr->rwlock); +} + +/* + * create_rwlock(FreqRead, LockCheck) + */ + +static ERL_NIF_TERM +create_rwlock(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) +{ + int lock_check, freqread; + ERL_NIF_TERM rwlock_term; + rwlock_resource_t *rwlr; + char buf[100]; + + if (argc != 2) + goto badarg; + + freqread = get_bool(env, argv[0]); + if (freqread < 0) + goto badarg; + + if (!HAVE_FREQREAD_SUPPORT && freqread) + return enif_make_atom(env, "enotsup"); + + lock_check = get_bool(env, argv[1]); + if (lock_check < 0) + goto badarg; + + rwlr = enif_alloc_resource(enif_priv_data(env), sizeof(rwlock_resource_t)); + rwlr->lock_check = lock_check; + ATOMIC_INIT(&rwlr->is_locked, 0); + rwlr->rwlock = RWMUTEX_CREATE(freqread); + rwlock_term = enif_make_resource(env, rwlr); + enif_release_resource(rwlr); + return rwlock_term; + + badarg: + return enif_make_badarg(env); +} + +/* + * rwlock_op(RWLock, Blocking, WriteOp, WaitTime) + */ + +static ERL_NIF_TERM +rwlock_op(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) +{ + rwlock_resource_t *rwlr; + int blocking, write, wait_locked, wait_unlocked; + + if (argc != 5) + goto badarg; + + if (!enif_get_resource(env, argv[0], enif_priv_data(env), (void **) &rwlr)) + goto badarg; + + blocking = get_bool(env, argv[1]); + if (blocking < 0) + goto badarg; + + write = get_bool(env, argv[2]); + if (write < 0) + goto badarg; + + if (!enif_get_int(env, argv[3], &wait_locked)) + goto badarg; + if (wait_locked < 0) + goto badarg; + + if (!enif_get_int(env, argv[4], &wait_unlocked)) + goto badarg; + if (wait_unlocked < 0) + goto badarg; + + if (write) { + if (blocking) + RWMUTEX_WLOCK(rwlr->rwlock); + else + while (EBUSY == RWMUTEX_TRYWLOCK(rwlr->rwlock)); + if (rwlr->lock_check) { + ASSERT(!ATOMIC_READ(&rwlr->is_locked)); + ATOMIC_SET(&rwlr->is_locked, -1); + } + } + else { + if (blocking) + RWMUTEX_RLOCK(rwlr->rwlock); + else + while (EBUSY == RWMUTEX_TRYRLOCK(rwlr->rwlock)); + if (rwlr->lock_check) { + ASSERT(ATOMIC_READ(&rwlr->is_locked) >= 0); + ATOMIC_INC(&rwlr->is_locked); + } + } + + if (wait_locked) + milli_sleep(wait_locked); + + if (write) { + if (rwlr->lock_check) { + ASSERT(ATOMIC_READ(&rwlr->is_locked) == -1); + ATOMIC_SET(&rwlr->is_locked, 0); + } + RWMUTEX_WUNLOCK(rwlr->rwlock); + } + else { + if (rwlr->lock_check) { + ASSERT(ATOMIC_READ(&rwlr->is_locked) > 0); + ATOMIC_DEC(&rwlr->is_locked); + } + RWMUTEX_RUNLOCK(rwlr->rwlock); + } + + if (wait_unlocked) + milli_sleep(wait_unlocked); + + return enif_make_atom(env, "ok"); + badarg: + return enif_make_badarg(env); +} + +static int load_nif_lib(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info) +{ + *priv_data = enif_open_resource_type(env, + NULL, + "rwlock_resource", + rwlock_destructor, + ERL_NIF_RT_CREATE, + NULL); + if (*priv_data) + return 0; + else + return -1; +} + +/* + * 0 -> false + * >0 -> true + * <0 -> error + */ + +static int +get_bool(ErlNifEnv* env, ERL_NIF_TERM term) +{ + int res; + char buf[10]; + + res = enif_get_atom(env, term, buf, sizeof(buf), ERL_NIF_LATIN1); + if (res == 0) + return -1; + if (strcmp("false", buf) == 0) + return 0; + else if (strcmp("true", buf) == 0) + return 1; + else + return -1; +} + +static int +fail(const char *file, int line, const char *function, const char *assertion) +{ + fprintf(stderr, "%s:%d: Assertion failed in %s(): %s\n", + file, line, function, assertion); + abort(); +} + +static void +milli_sleep(int ms) +{ +#ifdef __WIN32__ + Sleep(ms); +#else + while (erts_milli_sleep(ms) != 0); +#endif +} + +static ErlNifFunc nif_funcs[] = { + {"long_rw_test", 0, long_rw_test}, + {"hammer_rw_test", 1, hammer_rw_test}, + {"hammer_tryrw_test", 1, hammer_tryrw_test}, + {"create_rwlock", 2, create_rwlock}, + {"rwlock_op", 5, rwlock_op} +}; + +ERL_NIF_INIT(mtx_SUITE, nif_funcs, load_nif_lib, NULL, NULL, NULL) |