diff options
Diffstat (limited to 'erts/emulator/test/nif_SUITE_data')
| -rw-r--r-- | erts/emulator/test/nif_SUITE_data/nif_SUITE.c | 798 | ||||
| -rw-r--r-- | erts/emulator/test/nif_SUITE_data/nif_mod.c | 2 |
2 files changed, 792 insertions, 8 deletions
diff --git a/erts/emulator/test/nif_SUITE_data/nif_SUITE.c b/erts/emulator/test/nif_SUITE_data/nif_SUITE.c index 7331c5b2cd..d5dd379d76 100644 --- a/erts/emulator/test/nif_SUITE_data/nif_SUITE.c +++ b/erts/emulator/test/nif_SUITE_data/nif_SUITE.c @@ -25,10 +25,33 @@ #include <limits.h> #ifndef __WIN32__ #include <unistd.h> +#include <fcntl.h> +#include <errno.h> #endif #include "nif_mod.h" +#if 0 +static ErlNifMutex* dbg_trace_lock; +#define DBG_TRACE_INIT dbg_trace_lock = enif_mutex_create("nif_SUITE.DBG_TRACE") +#define DBG_TRACE_FINI enif_mutex_destroy(dbg_trace_lock) +#define DBG_TRACE_LOCK enif_mutex_lock(dbg_trace_lock) +#define DBG_TRACE_UNLOCK enif_mutex_unlock(dbg_trace_lock) +#define DBG_TRACE0(FMT) do {DBG_TRACE_LOCK; enif_fprintf(stderr, FMT); DBG_TRACE_UNLOCK; }while(0) +#define DBG_TRACE1(FMT, A) do {DBG_TRACE_LOCK; enif_fprintf(stderr, FMT, A); DBG_TRACE_UNLOCK; }while(0) +#define DBG_TRACE2(FMT, A, B) do {DBG_TRACE_LOCK; enif_fprintf(stderr, FMT, A, B); DBG_TRACE_UNLOCK; }while(0) +#define DBG_TRACE3(FMT, A, B, C) do {DBG_TRACE_LOCK; enif_fprintf(stderr, FMT, A, B, C); DBG_TRACE_UNLOCK; }while(0) +#define DBG_TRACE4(FMT, A, B, C, D) do {DBG_TRACE_LOCK; enif_fprintf(stderr, FMT, A, B, C, D); DBG_TRACE_UNLOCK; }while(0) +#else +#define DBG_TRACE_INIT +#define DBG_TRACE_FINI +#define DBG_TRACE0(FMT) +#define DBG_TRACE1(FMT, A) +#define DBG_TRACE2(FMT, A, B) +#define DBG_TRACE3(FMT, A, B, C) +#define DBG_TRACE4(FMT, A, B, C, D) +#endif + static int static_cntA; /* zero by default */ static int static_cntB = NIF_SUITE_LIB_VER * 100; @@ -42,7 +65,17 @@ static ERL_NIF_TERM atom_second; static ERL_NIF_TERM atom_millisecond; static ERL_NIF_TERM atom_microsecond; static ERL_NIF_TERM atom_nanosecond; - +static ERL_NIF_TERM atom_eagain; +static ERL_NIF_TERM atom_eof; +static ERL_NIF_TERM atom_error; +static ERL_NIF_TERM atom_fd_resource_stop; +static ERL_NIF_TERM atom_monitor_resource_type; +static ERL_NIF_TERM atom_monitor_resource_down; +static ERL_NIF_TERM atom_init; +static ERL_NIF_TERM atom_stats; +static ERL_NIF_TERM atom_done; +static ERL_NIF_TERM atom_stop; +static ERL_NIF_TERM atom_null; typedef struct { @@ -102,6 +135,41 @@ struct binary_resource { unsigned size; }; +static ErlNifResourceType* fd_resource_type; +static void fd_resource_dtor(ErlNifEnv* env, void* obj); +static void fd_resource_stop(ErlNifEnv* env, void* obj, ErlNifEvent, int); +static ErlNifResourceTypeInit fd_rt_init = { + fd_resource_dtor, + fd_resource_stop +}; +struct fd_resource { + int fd; + int was_selected; + ErlNifPid pid; +}; + +static ErlNifResourceType* monitor_resource_type; +static void monitor_resource_dtor(ErlNifEnv* env, void* obj); +static void monitor_resource_down(ErlNifEnv*, void* obj, ErlNifPid*, ErlNifMonitor*); +static ErlNifResourceTypeInit monitor_rt_init = { + monitor_resource_dtor, + NULL, + monitor_resource_down +}; +struct monitor_resource { + ErlNifPid receiver; + int use_msgenv; +}; + +static ErlNifResourceType* frenzy_resource_type; +static void frenzy_resource_dtor(ErlNifEnv* env, void* obj); +static void frenzy_resource_down(ErlNifEnv*, void* obj, ErlNifPid*, ErlNifMonitor*); +static ErlNifResourceTypeInit frenzy_rt_init = { + frenzy_resource_dtor, + NULL, + frenzy_resource_down +}; + static int get_pointer(ErlNifEnv* env, ERL_NIF_TERM term, void** pp) { ErlNifBinary bin; @@ -129,6 +197,8 @@ static int load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info) data->call_history = NULL; data->nif_mod = NULL; + DBG_TRACE_INIT; + add_call(env, data, "load"); data->rt_arr[0].t = enif_open_resource_type(env,NULL,"Gold",resource_dtor, @@ -143,6 +213,16 @@ static int load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info) msgenv_resource_type = enif_open_resource_type(env,NULL,"nif_SUITE.msgenv", msgenv_dtor, ERL_NIF_RT_CREATE, NULL); + fd_resource_type = enif_open_resource_type_x(env, "nif_SUITE.fd", + &fd_rt_init, + ERL_NIF_RT_CREATE, NULL); + monitor_resource_type = enif_open_resource_type_x(env, "nif_SUITE.monitor", + &monitor_rt_init, + ERL_NIF_RT_CREATE, NULL); + frenzy_resource_type = enif_open_resource_type_x(env, "nif_SUITE.monitor_frenzy", + &frenzy_rt_init, + ERL_NIF_RT_CREATE, NULL); + atom_false = enif_make_atom(env,"false"); atom_true = enif_make_atom(env,"true"); atom_self = enif_make_atom(env,"self"); @@ -153,6 +233,17 @@ static int load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info) atom_millisecond = enif_make_atom(env,"millisecond"); atom_microsecond = enif_make_atom(env,"microsecond"); atom_nanosecond = enif_make_atom(env,"nanosecond"); + atom_eagain = enif_make_atom(env, "eagain"); + atom_eof = enif_make_atom(env, "eof"); + atom_error = enif_make_atom(env, "error"); + atom_fd_resource_stop = enif_make_atom(env, "fd_resource_stop"); + atom_monitor_resource_type = enif_make_atom(env, "monitor_resource_type"); + atom_monitor_resource_down = enif_make_atom(env, "monitor_resource_down"); + atom_init = enif_make_atom(env,"init"); + atom_stats = enif_make_atom(env,"stats"); + atom_done = enif_make_atom(env,"done"); + atom_stop = enif_make_atom(env,"stop"); + atom_null = enif_make_atom(env,"null"); *priv_data = data; return 0; @@ -206,6 +297,7 @@ static void unload(ErlNifEnv* env, void* priv_data) } enif_free(priv_data); } + DBG_TRACE_FINI; } static ERL_NIF_TERM lib_version(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) @@ -829,6 +921,9 @@ static ERL_NIF_TERM get_resource(ErlNifEnv* env, int argc, const ERL_NIF_TERM ar if (enif_is_identical(argv[0], atom_binary_resource_type)) { type.t = binary_resource_type; } + else if (enif_is_identical(argv[0], atom_monitor_resource_type)) { + type.t = monitor_resource_type; + } else { get_pointer(env, argv[0], &type.vp); } @@ -1107,10 +1202,6 @@ static ERL_NIF_TERM make_term_string(struct make_term_info* mti, int n) { return enif_make_string(mti->dst_env, "Hello!", ERL_NIF_LATIN1); } -static ERL_NIF_TERM make_term_ref(struct make_term_info* mti, int n) -{ - return enif_make_ref(mti->dst_env); -} static ERL_NIF_TERM make_term_sub_binary(struct make_term_info* mti, int n) { ERL_NIF_TERM orig; @@ -1213,7 +1304,6 @@ static Make_term_Func* make_funcs[] = { make_term_atom, make_term_existing_atom, make_term_string, - //make_term_ref, make_term_sub_binary, make_term_uint, make_term_long, @@ -1493,7 +1583,6 @@ static ERL_NIF_TERM send_term(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[ static ERL_NIF_TERM send_copy_term(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) { - ErlNifEnv* menv; ErlNifPid pid; int ret; if (!enif_get_local_pid(env, argv[0], &pid)) { @@ -2037,6 +2126,688 @@ static ERL_NIF_TERM format_term(ErlNifEnv* env, int argc, const ERL_NIF_TERM arg } +static int get_fd(ErlNifEnv* env, ERL_NIF_TERM term, struct fd_resource** rsrc) +{ + if (!enif_get_resource(env, term, fd_resource_type, (void**)rsrc)) { + return 0; + } + return 1; +} + +static ERL_NIF_TERM select_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + struct fd_resource* fdr; + enum ErlNifSelectFlags mode; + void* obj; + ErlNifPid nifpid, *pid = NULL; + ERL_NIF_TERM ref; + int retval; + + if (!get_fd(env, argv[0], &fdr) + || !enif_get_uint(env, argv[1], &mode) + || !enif_get_resource(env, argv[2], fd_resource_type, &obj)) + { + return enif_make_badarg(env); + } + + if (argv[3] != atom_null) { + if (!enif_get_local_pid(env, argv[3], &nifpid)) + return enif_make_badarg(env); + pid = &nifpid; + } + ref = argv[4]; + + fdr->was_selected = 1; + enif_self(env, &fdr->pid); + retval = enif_select(env, fdr->fd, mode, obj, pid, ref); + + return enif_make_int(env, retval); +} + +static ERL_NIF_TERM pipe_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + struct fd_resource* read_rsrc; + struct fd_resource* write_rsrc; + ERL_NIF_TERM read_fd, write_fd; + int fds[2], flags; + + if (pipe(fds) < 0) + return enif_make_string(env, "pipe failed", ERL_NIF_LATIN1); + + if ((flags = fcntl(fds[0], F_GETFL, 0)) < 0 + || fcntl(fds[0], F_SETFL, flags|O_NONBLOCK) < 0 + || (flags = fcntl(fds[1], F_GETFL, 0)) < 0 + || fcntl(fds[1], F_SETFL, flags|O_NONBLOCK) < 0) { + close(fds[0]); + close(fds[1]); + return enif_make_string(env, "fcntl failed on pipe", ERL_NIF_LATIN1); + } + + read_rsrc = enif_alloc_resource(fd_resource_type, sizeof(struct fd_resource)); + write_rsrc = enif_alloc_resource(fd_resource_type, sizeof(struct fd_resource)); + read_rsrc->fd = fds[0]; + read_rsrc->was_selected = 0; + write_rsrc->fd = fds[1]; + write_rsrc->was_selected = 0; + read_fd = enif_make_resource(env, read_rsrc); + write_fd = enif_make_resource(env, write_rsrc); + enif_release_resource(read_rsrc); + enif_release_resource(write_rsrc); + + return enif_make_tuple2(env, + enif_make_tuple2(env, read_fd, make_pointer(env, read_rsrc)), + enif_make_tuple2(env, write_fd, make_pointer(env, write_rsrc))); +} + +static ERL_NIF_TERM write_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + struct fd_resource* fdr; + ErlNifBinary bin; + int n, written = 0; + + if (!get_fd(env, argv[0], &fdr) + || !enif_inspect_binary(env, argv[1], &bin)) + return enif_make_badarg(env); + + for (;;) { + n = write(fdr->fd, bin.data + written, bin.size - written); + if (n >= 0) { + written += n; + if (written == bin.size) { + return atom_ok; + } + } + else if (errno == EAGAIN) { + return enif_make_tuple2(env, atom_eagain, enif_make_int(env, written)); + } + else if (errno == EINTR) { + continue; + } + else { + return enif_make_tuple2(env, atom_error, enif_make_int(env, errno)); + } + } +} + +static ERL_NIF_TERM read_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + struct fd_resource* fdr; + unsigned char* buf; + int n, count; + ERL_NIF_TERM res; + + if (!get_fd(env, argv[0], &fdr) + || !enif_get_int(env, argv[1], &count) || count < 1) + return enif_make_badarg(env); + + buf = enif_make_new_binary(env, count, &res); + + for (;;) { + n = read(fdr->fd, buf, count); + if (n > 0) { + if (n < count) { + res = enif_make_sub_binary(env, res, 0, n); + } + return res; + } + else if (n == 0) { + return atom_eof; + } + else if (errno == EAGAIN) { + return atom_eagain; + } + else if (errno == EINTR) { + continue; + } + else { + return enif_make_tuple2(env, atom_error, enif_make_int(env, errno)); + } + } +} + +static ERL_NIF_TERM is_closed_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + struct fd_resource* fdr; + + if (!get_fd(env, argv[0], &fdr)) + return enif_make_badarg(env); + + return fdr->fd < 0 ? atom_true : atom_false; +} + +static void fd_resource_dtor(ErlNifEnv* env, void* obj) +{ + struct fd_resource* fdr = (struct fd_resource*)obj; + resource_dtor(env, obj); + if (fdr->fd >= 0) { + assert(!fdr->was_selected); + close(fdr->fd); + } +} + +static struct { + void* obj; + int was_direct_call; +}last_fd_stop; +int fd_stop_cnt = 0; + +static void fd_resource_stop(ErlNifEnv* env, void* obj, ErlNifEvent fd, + int is_direct_call) +{ + struct fd_resource* fdr = (struct fd_resource*)obj; + assert(fd == fdr->fd); + assert(fd >= 0); + + last_fd_stop.obj = obj; + last_fd_stop.was_direct_call = is_direct_call; + fd_stop_cnt++; + + close(fd); + fdr->fd = -1; /* thread safety ? */ + fdr->was_selected = 0; + + { + ErlNifEnv* msg_env = enif_alloc_env(); + ERL_NIF_TERM msg; + msg = enif_make_tuple3(msg_env, + atom_fd_resource_stop, + make_pointer(msg_env, obj), + enif_make_int(msg_env, is_direct_call)); + + enif_send(env, &fdr->pid, msg_env, msg); + enif_free_env(msg_env); + } +} + +static ERL_NIF_TERM last_fd_stop_call(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + ERL_NIF_TERM last, ret; + last = enif_make_tuple2(env, make_pointer(env, last_fd_stop.obj), + enif_make_int(env, last_fd_stop.was_direct_call)); + ret = enif_make_tuple2(env, enif_make_int(env, fd_stop_cnt), last); + fd_stop_cnt = 0; + return ret; +} + + +static void monitor_resource_dtor(ErlNifEnv* env, void* obj) +{ + resource_dtor(env, obj); +} + +static ERL_NIF_TERM make_monitor(ErlNifEnv* env, const ErlNifMonitor* mon) +{ + ERL_NIF_TERM mon_bin; + memcpy(enif_make_new_binary(env, sizeof(ErlNifMonitor), &mon_bin), + mon, sizeof(ErlNifMonitor)); + return mon_bin; +} + +static int get_monitor(ErlNifEnv* env, ERL_NIF_TERM term, ErlNifMonitor* mon) +{ + ErlNifBinary bin; + if (!enif_inspect_binary(env, term, &bin) + || bin.size != sizeof(ErlNifMonitor)) + return 0; + memcpy(mon, bin.data, bin.size); + return 1; +} + +static void monitor_resource_down(ErlNifEnv* env, void* obj, ErlNifPid* pid, + ErlNifMonitor* mon) +{ + struct monitor_resource* rsrc = (struct monitor_resource*)obj; + ErlNifEnv* build_env; + ErlNifEnv* msg_env; + ERL_NIF_TERM msg; + + if (rsrc->use_msgenv) { + msg_env = enif_alloc_env(); + build_env = msg_env; + } + else { + msg_env = NULL; + build_env = env; + } + + msg = enif_make_tuple4(build_env, + atom_monitor_resource_down, + make_pointer(build_env, obj), + enif_make_pid(build_env, pid), + make_monitor(build_env, mon)); + + enif_send(env, &rsrc->receiver, msg_env, msg); + if (msg_env) + enif_free_env(msg_env); +} + +static ERL_NIF_TERM alloc_monitor_resource_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + struct monitor_resource* rsrc; + + rsrc = enif_alloc_resource(monitor_resource_type, sizeof(struct monitor_resource)); + + return make_pointer(env,rsrc); +} + +static ERL_NIF_TERM monitor_process_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + struct monitor_resource* rsrc; + ErlNifPid target; + ErlNifMonitor mon; + int res; + + if (!get_pointer(env, argv[0], (void**)&rsrc) + || !enif_get_local_pid(env, argv[1], &target) + || !enif_get_local_pid(env, argv[3], &rsrc->receiver)) { + return enif_make_badarg(env); + } + + rsrc->use_msgenv = (argv[2] == atom_true); + res = enif_monitor_process(env, rsrc, &target, &mon); + + return enif_make_tuple2(env, enif_make_int(env, res), make_monitor(env, &mon)); +} + +static ERL_NIF_TERM demonitor_process_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + struct monitor_resource* rsrc; + ErlNifMonitor mon; + int res; + + if (!get_pointer(env, argv[0], (void**)&rsrc) + || !get_monitor(env, argv[1], &mon)) { + return enif_make_badarg(env); + } + + res = enif_demonitor_process(env, rsrc, &mon); + + return enif_make_int(env, res); +} + +static ERL_NIF_TERM compare_monitors_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + ErlNifMonitor m1, m2; + if (!get_monitor(env, argv[0], &m1) + || !get_monitor(env, argv[1], &m2)) { + return enif_make_badarg(env); + } + + return enif_make_int(env, enif_compare_monitors(&m1, &m2)); +} + + +/*********** monitor_frenzy ************/ + +struct frenzy_rand_bits +{ + unsigned int source; + unsigned int bits_consumed; +}; + +static unsigned int frenzy_rand_bits_max; + +unsigned rand_bits(struct frenzy_rand_bits* rnd, unsigned int nbits) +{ + unsigned int res; + + rnd->bits_consumed += nbits; + assert(rnd->bits_consumed <= frenzy_rand_bits_max); + res = rnd->source & ((1 << nbits)-1); + rnd->source >>= nbits; + return res; +} + +#define FRENZY_PROCS_MAX_BITS 4 +#define FRENZY_PROCS_MAX (1 << FRENZY_PROCS_MAX_BITS) + +#define FRENZY_RESOURCES_MAX_BITS 4 +#define FRENZY_RESOURCES_MAX (1 << FRENZY_RESOURCES_MAX_BITS) + +#define FRENZY_MONITORS_MAX_BITS 4 +#define FRENZY_MONITORS_MAX (1 << FRENZY_MONITORS_MAX_BITS) + +struct frenzy_monitor { + ErlNifMutex* lock; + enum { + MON_FREE, MON_FREE_DOWN, MON_FREE_DEMONITOR, + MON_TRYING, MON_ACTIVE, MON_PENDING + } state; + ErlNifMonitor mon; + ErlNifPid pid; + unsigned int use_cnt; +}; + +struct frenzy_resource { + unsigned int rix; + struct frenzy_monitor monv[FRENZY_MONITORS_MAX]; +}; +struct frenzy_reslot { + ErlNifMutex* lock; + struct frenzy_resource* obj; + unsigned long alloc_cnt; + unsigned long release_cnt; +}; +static struct frenzy_reslot resv[FRENZY_RESOURCES_MAX]; + +static ERL_NIF_TERM monitor_frenzy_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + struct frenzy_proc { + ErlNifPid pid; + int is_free; + }; + static struct frenzy_proc procs[FRENZY_PROCS_MAX]; + static struct frenzy_proc* proc_refs[FRENZY_PROCS_MAX]; + static unsigned int nprocs, old_nprocs; + static ErlNifMutex* procs_lock; + static unsigned long spawn_cnt = 0; + static unsigned long kill_cnt = 0; + static unsigned long proc_histogram[FRENZY_PROCS_MAX]; + + static const unsigned int primes[] = {7, 13, 17, 19}; + + struct frenzy_resource* r; + struct frenzy_rand_bits rnd; + unsigned int op, inc, my_nprocs; + unsigned int mix; /* r->monv[] index */ + unsigned int rix; /* resv[] index */ + unsigned int pix; /* procs[] index */ + unsigned int ref_ix; /* proc_refs[] index */ + int self_pix, rv; + ERL_NIF_TERM retval = atom_error; + const ERL_NIF_TERM Op = argv[0]; + const ERL_NIF_TERM Rnd = argv[1]; + const ERL_NIF_TERM SelfPix = argv[2]; + const ERL_NIF_TERM NewPid = argv[3]; + + if (enif_is_atom(env, Op)) { + if (Op == atom_init) { + if (procs_lock || !enif_get_uint(env, Rnd, &frenzy_rand_bits_max)) + return enif_make_badarg(env); + + procs_lock = enif_mutex_create("nif_SUITE:monitor_frenzy.procs"); + nprocs = 0; + old_nprocs = 0; + for (pix = 0; pix < FRENZY_PROCS_MAX; pix++) { + proc_refs[pix] = &procs[pix]; + procs[pix].is_free = 1; + proc_histogram[pix] = 0; + } + for (rix = 0; rix < FRENZY_RESOURCES_MAX; rix++) { + resv[rix].lock = enif_mutex_create("nif_SUITE:monitor_frenzy.resv.lock"); + resv[rix].obj = NULL; + resv[rix].alloc_cnt = 0; + resv[rix].release_cnt = 0; + } + + /* Add self as first process */ + enif_self(env, &procs[0].pid); + procs[0].is_free = 0; + old_nprocs = ++nprocs; + + spawn_cnt = 1; + kill_cnt = 0; + return enif_make_uint(env, 0); /* SelfPix */ + } + else if (Op == atom_stats) { + ERL_NIF_TERM hist[FRENZY_PROCS_MAX]; + unsigned long res_alloc_cnt = 0; + unsigned long res_release_cnt = 0; + for (ref_ix = 0; ref_ix < FRENZY_PROCS_MAX; ref_ix++) { + hist[ref_ix] = enif_make_ulong(env, proc_histogram[ref_ix]); + } + for (rix = 0; rix < FRENZY_RESOURCES_MAX; rix++) { + res_alloc_cnt += resv[rix].alloc_cnt; + res_release_cnt += resv[rix].release_cnt; + } + + return + enif_make_list4(env, + enif_make_tuple2(env, enif_make_string(env, "proc_histogram", ERL_NIF_LATIN1), + enif_make_list_from_array(env, hist, FRENZY_PROCS_MAX)), + enif_make_tuple2(env, enif_make_string(env, "spawn_cnt", ERL_NIF_LATIN1), + enif_make_ulong(env, spawn_cnt)), + enif_make_tuple2(env, enif_make_string(env, "kill_cnt", ERL_NIF_LATIN1), + enif_make_ulong(env, kill_cnt)), + enif_make_tuple3(env, enif_make_string(env, "resource_alloc", ERL_NIF_LATIN1), + enif_make_ulong(env, res_alloc_cnt), + enif_make_ulong(env, res_release_cnt))); + + } + else if (Op == atom_stop && procs_lock) { /* stop all */ + retval = enif_make_list(env, 0); + enif_mutex_lock(procs_lock); + for (ref_ix = 0; ref_ix < nprocs; ref_ix++) { + assert(!proc_refs[ref_ix]->is_free); + retval = enif_make_list_cell(env, enif_make_pid(env, &proc_refs[ref_ix]->pid), + retval); + proc_refs[ref_ix]->is_free = 1; + } + kill_cnt += nprocs; + nprocs = 0; + old_nprocs = 0; + enif_mutex_unlock(procs_lock); + return retval; + } + return enif_make_badarg(env); + } + + if (!enif_get_int(env, SelfPix, &self_pix) || + !enif_get_uint(env, Op, &op) || + !enif_get_uint(env, Rnd, &rnd.source)) + return enif_make_badarg(env); + + rnd.bits_consumed = 0; + switch (op) { + case 0: { /* add/remove process */ + ErlNifPid self; + enif_self(env, &self); + + ref_ix = rand_bits(&rnd, FRENZY_PROCS_MAX_BITS) % FRENZY_PROCS_MAX; + enif_mutex_lock(procs_lock); + if (procs[self_pix].is_free || procs[self_pix].pid.pid != self.pid) { + /* Some one already removed me */ + enif_mutex_unlock(procs_lock); + return atom_done; + } + if (ref_ix >= nprocs || nprocs < 2) { /* add process */ + ref_ix = nprocs++; + pix = proc_refs[ref_ix] - procs; + assert(procs[pix].is_free); + if (!enif_get_local_pid(env, NewPid, &procs[pix].pid)) + abort(); + procs[pix].is_free = 0; + spawn_cnt++; + proc_histogram[ref_ix]++; + old_nprocs = nprocs; + enif_mutex_unlock(procs_lock); + DBG_TRACE2("Add pid %T, nprocs = %u\n", NewPid, nprocs); + retval = enif_make_uint(env, pix); + } + else { /* remove process */ + pix = proc_refs[ref_ix] - procs; + if (pix == self_pix) { + ref_ix = (ref_ix + 1) % nprocs; + pix = proc_refs[ref_ix] - procs; + } + assert(procs[pix].pid.pid != self.pid); + assert(!procs[pix].is_free); + retval = enif_make_pid(env, &procs[pix].pid); + --nprocs; + assert(!proc_refs[nprocs]->is_free); + if (ref_ix != nprocs) { + struct frenzy_proc* tmp = proc_refs[ref_ix]; + proc_refs[ref_ix] = proc_refs[nprocs]; + proc_refs[nprocs] = tmp; + } + procs[pix].is_free = 1; + proc_histogram[nprocs]++; + kill_cnt++; + enif_mutex_unlock(procs_lock); + DBG_TRACE2("Removed pid %T, nprocs = %u\n", retval, nprocs); + } + break; + } + case 1: + case 2: /* create/delete/lookup resource */ + rix = rand_bits(&rnd, FRENZY_RESOURCES_MAX_BITS) % FRENZY_RESOURCES_MAX; + inc = primes[rand_bits(&rnd, 2)]; + while (enif_mutex_trylock(resv[rix].lock) == EBUSY) { + rix = (rix + inc) % FRENZY_RESOURCES_MAX; + } + if (resv[rix].obj == NULL) { + r = enif_alloc_resource(frenzy_resource_type, + sizeof(struct frenzy_resource)); + resv[rix].obj = r; + resv[rix].alloc_cnt++; + r->rix = rix; + for (mix = 0; mix < FRENZY_MONITORS_MAX; mix++) { + r->monv[mix].lock = enif_mutex_create("nif_SUITE:monitor_frenzy.monv.lock"); + r->monv[mix].state = MON_FREE; + r->monv[mix].use_cnt = 0; + r->monv[mix].pid.pid = 0; /* null-pid */ + } + DBG_TRACE2("New resource at r=%p rix=%u\n", r, rix); + } + else if (rand_bits(&rnd, 3) == 0) { + r = resv[rix].obj; + resv[rix].obj = NULL; + resv[rix].release_cnt++; + enif_mutex_unlock(resv[rix].lock); + DBG_TRACE2("Delete resource at r=%p rix=%u\n", r, rix); + enif_release_resource(r); + retval = atom_ok; + break; + } + else { + r = resv[rix].obj; + } + enif_keep_resource(r); + enif_mutex_unlock(resv[rix].lock); + + /* monitor/demonitor */ + + mix = rand_bits(&rnd, FRENZY_MONITORS_MAX_BITS) % FRENZY_MONITORS_MAX; + inc = primes[rand_bits(&rnd, 2)]; + while (enif_mutex_trylock(r->monv[mix].lock) == EBUSY) { + mix = (mix + inc) % FRENZY_MONITORS_MAX; + } + switch (r->monv[mix].state) { + case MON_FREE: + case MON_FREE_DOWN: + case MON_FREE_DEMONITOR: { /* do monitor */ + /* + * Use an old possibly larger value of 'nprocs', to increase + * probability of monitoring an already terminated process + */ + my_nprocs = old_nprocs; + if (my_nprocs > 0) { + int save_state = r->monv[mix].state; + ref_ix = rand_bits(&rnd, FRENZY_PROCS_MAX_BITS) % my_nprocs; + pix = proc_refs[ref_ix] - procs; + r->monv[mix].pid.pid = procs[pix].pid.pid; /* "atomic" */ + r->monv[mix].state = MON_TRYING; + rv = enif_monitor_process(env, r, &r->monv[mix].pid, &r->monv[mix].mon); + if (rv == 0) { + r->monv[mix].state = MON_ACTIVE; + r->monv[mix].use_cnt++; + DBG_TRACE3("Monitor from r=%p rix=%u to %T\n", + r, r->rix, r->monv[mix].pid.pid); + } + else { + r->monv[mix].state = save_state; + DBG_TRACE4("Monitor from r=%p rix=%u to %T FAILED with %d\n", + r, r->rix, r->monv[mix].pid.pid, rv); + } + retval = enif_make_int(env,rv); + } + else { + DBG_TRACE0("No pids to monitor\n"); + retval = atom_ok; + } + break; + } + case MON_ACTIVE: /* do demonitor */ + rv = enif_demonitor_process(env, r, &r->monv[mix].mon); + if (rv == 0) { + DBG_TRACE3("Demonitor from r=%p rix=%u to %T\n", + r, r->rix, r->monv[mix].pid.pid); + r->monv[mix].state = MON_FREE_DEMONITOR; + } + else { + DBG_TRACE4("Demonitor from r=%p rix=%u to %T FAILED with %d\n", + r, r->rix, r->monv[mix].pid.pid, rv); + r->monv[mix].state = MON_PENDING; + } + retval = enif_make_int(env,rv); + break; + + case MON_PENDING: /* waiting for 'down' callback, do nothing */ + retval = atom_ok; + break; + default: + abort(); + break; + } + enif_mutex_unlock(r->monv[mix].lock); + enif_release_resource(r); + break; + + case 3: /* no-op */ + retval = atom_ok; + break; + } + + { + int percent = (rand_bits(&rnd, 6) + 1) * 2; /* 2 to 128 */ + if (percent <= 100) + enif_consume_timeslice(env, percent); + } + + return retval; +} + +static void frenzy_resource_dtor(ErlNifEnv* env, void* obj) +{ + struct frenzy_resource* r = (struct frenzy_resource*) obj; + unsigned int mix; + + DBG_TRACE2("DTOR r=%p rix=%u\n", r, r->rix); + + for (mix = 0; mix < FRENZY_MONITORS_MAX; mix++) { + assert(r->monv[mix].state != MON_PENDING); + enif_mutex_destroy(r->monv[mix].lock); + r->monv[mix].lock = NULL; + } + +} + +static void frenzy_resource_down(ErlNifEnv* env, void* obj, ErlNifPid* pid, + ErlNifMonitor* mon) +{ + struct frenzy_resource* r = (struct frenzy_resource*) obj; + unsigned int mix; + + DBG_TRACE3("DOWN pid=%T, r=%p rix=%u\n", pid->pid, r, r->rix); + + for (mix = 0; mix < FRENZY_MONITORS_MAX; mix++) { + if (r->monv[mix].pid.pid == pid->pid && r->monv[mix].state >= MON_TRYING) { + enif_mutex_lock(r->monv[mix].lock); + if (enif_compare_monitors(mon, &r->monv[mix].mon) == 0) { + assert(r->monv[mix].state >= MON_ACTIVE); + r->monv[mix].state = MON_FREE_DOWN; + enif_mutex_unlock(r->monv[mix].lock); + return; + } + enif_mutex_unlock(r->monv[mix].lock); + } + } + enif_fprintf(stderr, "DOWN called for unknown monitor\n"); + abort(); +} + + + static ErlNifFunc nif_funcs[] = { {"lib_version", 0, lib_version}, @@ -2113,7 +2884,18 @@ static ErlNifFunc nif_funcs[] = {"term_to_binary_nif", 2, term_to_binary}, {"binary_to_term_nif", 3, binary_to_term}, {"port_command_nif", 2, port_command}, - {"format_term_nif", 2, format_term} + {"format_term_nif", 2, format_term}, + {"select_nif", 5, select_nif}, + {"pipe_nif", 0, pipe_nif}, + {"write_nif", 2, write_nif}, + {"read_nif", 2, read_nif}, + {"is_closed_nif", 1, is_closed_nif}, + {"last_fd_stop_call", 0, last_fd_stop_call}, + {"alloc_monitor_resource_nif", 0, alloc_monitor_resource_nif}, + {"monitor_process_nif", 4, monitor_process_nif}, + {"demonitor_process_nif", 2, demonitor_process_nif}, + {"compare_monitors_nif", 2, compare_monitors_nif}, + {"monitor_frenzy_nif", 4, monitor_frenzy_nif} }; ERL_NIF_INIT(nif_SUITE,nif_funcs,load,NULL,upgrade,unload) diff --git a/erts/emulator/test/nif_SUITE_data/nif_mod.c b/erts/emulator/test/nif_SUITE_data/nif_mod.c index e6106b6036..04699d3327 100644 --- a/erts/emulator/test/nif_SUITE_data/nif_mod.c +++ b/erts/emulator/test/nif_SUITE_data/nif_mod.c @@ -176,6 +176,7 @@ static void do_load_info(ErlNifEnv* env, ERL_NIF_TERM load_info, int* retvalp) CHECK(enif_is_empty_list(env, head)); } +#if NIF_LIB_VER != 3 static int load(ErlNifEnv* env, void** priv, ERL_NIF_TERM load_info) { NifModPrivData* data; @@ -230,6 +231,7 @@ static void unload(ErlNifEnv* env, void* priv) add_call(env, data, "unload"); NifModPrivData_release(data); } +#endif /* NIF_LIB_VER != 3 */ static ERL_NIF_TERM lib_version(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) { |