/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2009-2010. 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 "erl_nif.h"
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <limits.h>
#include "nif_mod.h"
static int static_cntA; /* zero by default */
static int static_cntB = NIF_SUITE_LIB_VER * 100;
typedef struct
{
int ref_cnt;
CallInfo* call_history;
NifModPrivData* nif_mod;
union { ErlNifResourceType* t; long l; } rt_arr[2];
}PrivData;
void add_call(ErlNifEnv* env, PrivData* data, const char* func_name)
{
CallInfo* call = enif_alloc(env, sizeof(CallInfo)+strlen(func_name));
strcpy(call->func_name, func_name);
call->lib_ver = NIF_SUITE_LIB_VER;
call->next = data->call_history;
call->static_cntA = ++static_cntA;
call->static_cntB = ++static_cntB;
data->call_history = call;
call->arg = NULL;
call->arg_sz = 0;
}
#define ADD_CALL(FUNC_NAME) add_call(env, enif_get_data(env),FUNC_NAME)
static void* resource_dtor_last = NULL;
static unsigned resource_dtor_last_sz = 0;
static char resource_dtor_last_data[20];
static int resource_dtor_cnt = 0;
static void resource_dtor(ErlNifEnv* env, void* obj)
{
resource_dtor_last = obj;
resource_dtor_cnt++;
resource_dtor_last_sz = enif_sizeof_resource(env, obj);
assert(resource_dtor_last_sz <= sizeof(resource_dtor_last_data));
memcpy(resource_dtor_last_data, obj, resource_dtor_last_sz);
}
static int load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info)
{
/*ERL_NIF_TERM head, tail;*/
PrivData* data = enif_alloc(env, sizeof(PrivData));
assert(data != NULL);
data->ref_cnt = 1;
data->call_history = NULL;
data->nif_mod = NULL;
add_call(env, data, "load");
/*
head = load_info;
data->rt_cnt = 0;
for (head=load_info; enif_get_list_cell(env,load_info,&head,&tail);
head=tail) {
char buf[20];
int n = enif_get_string(env,head,buf,sizeof(buf));
assert(n > 0);
assert(i < sizeof(data->rt_arr)/sizeof(*data->rt_arr));
data->rt_arr[data->rt_cnt++].t = enif_create_resource_type(env,buf,resource_dtor,
ERL_NIF_RT_CREATE,NULL);
}
assert(enif_is_empty_list(env,head));
*/
data->rt_arr[0].t = enif_open_resource_type(env,"Gold",resource_dtor,
ERL_NIF_RT_CREATE,NULL);
data->rt_arr[1].t = enif_open_resource_type(env,"Silver",resource_dtor,
ERL_NIF_RT_CREATE,NULL);
*priv_data = data;
return 0;
}
static int reload(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info)
{
add_call(env, *priv_data, "reload");
return 0;
}
static int upgrade(ErlNifEnv* env, void** priv_data, void** old_priv_data, ERL_NIF_TERM load_info)
{
PrivData* data = *old_priv_data;
add_call(env, data, "upgrade");
data->ref_cnt++;
*priv_data = *old_priv_data;
return 0;
}
static void unload(ErlNifEnv* env, void* priv_data)
{
PrivData* data = priv_data;
add_call(env, data, "unload");
if (--data->ref_cnt == 0) {
enif_free(env, priv_data);
}
}
static ERL_NIF_TERM lib_version(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ADD_CALL("lib_version");
return enif_make_int(env, NIF_SUITE_LIB_VER);
}
static ERL_NIF_TERM make_call_history(ErlNifEnv* env, CallInfo** headp)
{
ERL_NIF_TERM list = enif_make_list(env, 0); /* NIL */
while (*headp != NULL) {
CallInfo* call = *headp;
ERL_NIF_TERM func_term = enif_make_atom(env,call->func_name);
ERL_NIF_TERM tpl;
if (call->arg != NULL) {
ERL_NIF_TERM arg_bin;
memcpy(enif_make_new_binary(env, call->arg_sz, &arg_bin),
call->arg, call->arg_sz);
func_term = enif_make_tuple2(env, func_term, arg_bin);
}
tpl = enif_make_tuple4(env, func_term,
enif_make_int(env,call->lib_ver),
enif_make_int(env,call->static_cntA),
enif_make_int(env,call->static_cntB));
list = enif_make_list_cell(env, tpl, list);
*headp = call->next;
enif_free(env,call);
}
return list;
}
static ERL_NIF_TERM call_history(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
PrivData* data = (PrivData*) enif_get_data(env);
return make_call_history(env,&data->call_history);
}
static ERL_NIF_TERM hold_nif_mod_priv_data(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
PrivData* data = (PrivData*) enif_get_data(env);
unsigned long ptr_as_ulong;
if (!enif_get_ulong(env,argv[0],&ptr_as_ulong)) {
return enif_make_badarg(env);
}
if (data->nif_mod != NULL && --(data->nif_mod->ref_cnt) == 0) {
enif_free(env,data->nif_mod);
}
data->nif_mod = (NifModPrivData*) ptr_as_ulong;
return enif_make_int(env,++(data->nif_mod->ref_cnt));
}
static ERL_NIF_TERM nif_mod_call_history(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
PrivData* data = (PrivData*) enif_get_data(env);
ERL_NIF_TERM ret;
if (data->nif_mod == NULL) {
return enif_make_string(env,"nif_mod pointer is NULL", ERL_NIF_LATIN1);
}
enif_mutex_lock(data->nif_mod->mtx);
ret = make_call_history(env, &data->nif_mod->call_history);
enif_mutex_unlock(data->nif_mod->mtx);
return ret;
}
static ERL_NIF_TERM list_seq(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ERL_NIF_TERM list;
int n;
if (!enif_get_int(env, argv[0], &n)) {
return enif_make_badarg(env);
}
list = enif_make_list(env, 0); /* NIL */
while (n > 0) {
list = enif_make_list_cell(env, enif_make_int(env,n), list);
n--;
}
return list;
}
static int test_int(ErlNifEnv* env, int i1)
{
int i2 = 0;
ERL_NIF_TERM int_term = enif_make_int(env, i1);
if (!enif_get_int(env,int_term, &i2) || i1 != i2) {
fprintf(stderr, "test_int(%d) ...FAILED i2=%d\r\n", i1, i2);
return 0;
}
return 1;
}
static int test_uint(ErlNifEnv* env, unsigned i1)
{
unsigned i2 = 0;
ERL_NIF_TERM int_term = enif_make_uint(env, i1);
if (!enif_get_uint(env,int_term, &i2) || i1 != i2) {
fprintf(stderr, "test_uint(%u) ...FAILED i2=%u\r\n", i1, i2);
return 0;
}
return 1;
}
static int test_long(ErlNifEnv* env, long i1)
{
long i2 = 0;
ERL_NIF_TERM int_term = enif_make_long(env, i1);
if (!enif_get_long(env,int_term, &i2) || i1 != i2) {
fprintf(stderr, "test_long(%ld) ...FAILED i2=%ld\r\n", i1, i2);
return 0;
}
return 1;
}
static int test_ulong(ErlNifEnv* env, unsigned long i1)
{
unsigned long i2 = 0;
ERL_NIF_TERM int_term = enif_make_ulong(env, i1);
if (!enif_get_ulong(env,int_term, &i2) || i1 != i2) {
fprintf(stderr, "test_ulong(%lu) ...FAILED i2=%lu\r\n", i1, i2);
return 0;
}
return 1;
}
static int test_double(ErlNifEnv* env, double d1)
{
double d2 = 0;
ERL_NIF_TERM term = enif_make_double(env, d1);
if (!enif_get_double(env,term, &d2) || d1 != d2) {
fprintf(stderr, "test_double(%e) ...FAILED i2=%e\r\n", d1, d2);
return 0;
}
return 1;
}
#define TAG_BITS 4
#define SMALL_BITS (sizeof(void*)*8 - TAG_BITS)
#define MAX_SMALL ((1L << (SMALL_BITS-1))-1)
#define MIN_SMALL (-(1L << (SMALL_BITS-1)))
static ERL_NIF_TERM type_test(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
int i;
int sint;
unsigned uint;
long slong;
unsigned long ulong;
double d;
ERL_NIF_TERM atom, ref1, ref2;
sint = INT_MIN;
do {
if (!test_int(env,sint)) {
goto error;
}
sint += ~sint / 3 + 1;
} while (sint < 0);
sint = INT_MAX;
do {
if (!test_int(env,sint)) {
goto error;
}
sint -= sint / 3 + 1;
} while (sint >= 0);
slong = LONG_MIN;
do {
if (!test_long(env,slong)) {
goto error;
}
slong += ~slong / 3 + 1;
} while (slong < 0);
slong = LONG_MAX;
do {
if (!test_long(env,slong)) {
goto error;
}
slong -= slong / 3 + 1;
} while (slong >= 0);
uint = UINT_MAX;
for (;;) {
if (!test_uint(env,uint)) {
}
if (uint == 0) break;
uint -= uint / 3 + 1;
}
ulong = ULONG_MAX;
for (;;) {
if (!test_ulong(env,ulong)) {
}
if (ulong == 0) break;
ulong -= ulong / 3 + 1;
}
if (MAX_SMALL < INT_MAX) { /* 32-bit */
for (i=-10 ; i <= 10; i++) {
if (!test_int(env,MAX_SMALL+i)) {
goto error;
}
}
for (i=-10 ; i <= 10; i++) {
if (!test_int(env,MIN_SMALL+i)) {
goto error;
}
}
for (i=-10 ; i <= 10; i++) {
if (!test_uint(env,MAX_SMALL+i)) {
goto error;
}
}
}
assert((MAX_SMALL < INT_MAX) == (MIN_SMALL > INT_MIN));
for (i=-10 ; i < 10; i++) {
if (!test_long(env,MAX_SMALL+i) || !test_ulong(env,MAX_SMALL+i) ||
!test_long(env,MIN_SMALL+i)) {
goto error;
}
}
for (d=3.141592e-100 ; d < 1e100 ; d *= 9.97) {
if (!test_double(env,d) || !test_double(env,-d)) {
goto error;
}
}
if (!enif_make_existing_atom(env,"nif_SUITE", &atom)
|| !enif_is_identical(env,atom,enif_make_atom(env,"nif_SUITE"))) {
fprintf(stderr, "nif_SUITE not an atom?\r\n");
goto error;
}
for (i=2; i; i--) {
if (enif_make_existing_atom(env,"nif_SUITE_pink_unicorn", &atom)) {
fprintf(stderr, "pink unicorn exist?\r\n");
goto error;
}
}
ref1 = enif_make_ref(env);
ref2 = enif_make_ref(env);
if (!enif_is_ref(env,ref1) || !enif_is_ref(env,ref2)
|| enif_is_identical(env,ref1,ref2) || enif_compare(env,ref1,ref2)==0) {
fprintf(stderr, "strange refs?\r\n");
goto error;
}
return enif_make_atom(env,"ok");
error:
return enif_make_atom(env,"error");
}
static ERL_NIF_TERM tuple_2_list(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
int arity = -1;
const ERL_NIF_TERM* ptr;
ERL_NIF_TERM list = enif_make_list(env,0);
if (argc!=1 || !enif_get_tuple(env,argv[0],&arity,&ptr)) {
return enif_make_badarg(env);
}
while (--arity >= 0) {
list = enif_make_list_cell(env,ptr[arity],list);
}
return list;
}
static ERL_NIF_TERM is_identical(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
if (argc != 2) {
return enif_make_badarg(env);
}
return enif_make_atom(env, (enif_is_identical(env,argv[0],argv[1]) ?
"true" : "false"));
}
static ERL_NIF_TERM compare(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
if (argc != 2) {
return enif_make_badarg(env);
}
return enif_make_int(env, enif_compare(env,argv[0],argv[1]));
}
static ERL_NIF_TERM many_args_100(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
int i, k;
if (argc == 100) {
for (i=1; i<=100; i++) {
if (!enif_get_int(env,argv[i-1],&k) || k!=i) {
goto badarg;
}
}
return enif_make_atom(env,"ok");
}
badarg:
return enif_make_badarg(env);
}
static ERL_NIF_TERM clone_bin(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ErlNifBinary ibin;
if (enif_inspect_binary(env,argv[0],&ibin)) {
ERL_NIF_TERM obin;
memcpy(enif_make_new_binary(env, ibin.size, &obin),
ibin.data, ibin.size);
return obin;
}
else {
return enif_make_badarg(env);
}
}
static ERL_NIF_TERM make_sub_bin(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
int pos, size;
if (!enif_get_int(env,argv[1],&pos) || !enif_get_int(env,argv[2],&size)) {
return enif_make_badarg(env);
}
return enif_make_sub_binary(env,argv[0],pos,size);
}
static ERL_NIF_TERM string_to_bin(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ErlNifBinary obin;
unsigned size;
int n;
if (!enif_get_int(env,argv[1],(int*)&size)
|| !enif_alloc_binary(env,size,&obin)) {
return enif_make_badarg(env);
}
n = enif_get_string(env, argv[0], (char*)obin.data, size, ERL_NIF_LATIN1);
return enif_make_tuple(env, 2, enif_make_int(env,n),
enif_make_binary(env,&obin));
}
static ERL_NIF_TERM atom_to_bin(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ErlNifBinary obin;
unsigned size;
int n;
if (!enif_get_int(env,argv[1],(int*)&size)
|| !enif_alloc_binary(env,size,&obin)) {
return enif_make_badarg(env);
}
n = enif_get_atom(env, argv[0], (char*)obin.data, size);
return enif_make_tuple(env, 2, enif_make_int(env,n),
enif_make_binary(env,&obin));
}
static ERL_NIF_TERM macros(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
const ERL_NIF_TERM* a;
ERL_NIF_TERM lists, tuples;
int arity;
if (!enif_get_tuple(env, argv[0], &arity, &a) || arity != 9) {
return enif_make_badarg(env);
}
lists = enif_make_list(env,9,
enif_make_list1(env,a[0]),
enif_make_list2(env,a[0],a[1]),
enif_make_list3(env,a[0],a[1],a[2]),
enif_make_list4(env,a[0],a[1],a[2],a[3]),
enif_make_list5(env,a[0],a[1],a[2],a[3],a[4]),
enif_make_list6(env,a[0],a[1],a[2],a[3],a[4],a[5]),
enif_make_list7(env,a[0],a[1],a[2],a[3],a[4],a[5],a[6]),
enif_make_list8(env,a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]),
enif_make_list9(env,a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]));
tuples = enif_make_list(env,9,
enif_make_tuple1(env,a[0]),
enif_make_tuple2(env,a[0],a[1]),
enif_make_tuple3(env,a[0],a[1],a[2]),
enif_make_tuple4(env,a[0],a[1],a[2],a[3]),
enif_make_tuple5(env,a[0],a[1],a[2],a[3],a[4]),
enif_make_tuple6(env,a[0],a[1],a[2],a[3],a[4],a[5]),
enif_make_tuple7(env,a[0],a[1],a[2],a[3],a[4],a[5],a[6]),
enif_make_tuple8(env,a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]),
enif_make_tuple9(env,a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]));
return enif_make_tuple2(env,lists,tuples);
}
static ERL_NIF_TERM tuple_2_list_and_tuple(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
const ERL_NIF_TERM* arr;
int arity;
if (!enif_get_tuple(env,argv[0],&arity,&arr)) {
return enif_make_badarg(env);
}
return enif_make_tuple2(env,
enif_make_list_from_array(env, arr, arity),
enif_make_tuple_from_array(env, arr, arity));
}
static ERL_NIF_TERM iolist_2_bin(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ErlNifBinary obin;
if (!enif_inspect_iolist_as_binary(env, argv[0], &obin)) {
return enif_make_badarg(env);
}
return enif_make_binary(env,&obin);
}
static ERL_NIF_TERM last_resource_dtor_call(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ERL_NIF_TERM ret;
if (resource_dtor_last != NULL) {
ERL_NIF_TERM bin;
memcpy(enif_make_new_binary(env, resource_dtor_last_sz, &bin),
resource_dtor_last_data, resource_dtor_last_sz);
ret = enif_make_tuple3(env,
enif_make_long(env, (long)resource_dtor_last),
bin,
enif_make_int(env, resource_dtor_cnt));
}
else {
ret = enif_make_list(env,0);
}
resource_dtor_last = NULL;
resource_dtor_last_sz = 0;
resource_dtor_cnt = 0;
return ret;
}
static ERL_NIF_TERM get_resource_type(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
PrivData* data = (PrivData*) enif_get_data(env);
int ix;
if (!enif_get_int(env, argv[0], &ix) || ix >= 2) {
return enif_make_badarg(env);
}
return enif_make_long(env, data->rt_arr[ix].l);
}
static ERL_NIF_TERM alloc_resource(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ErlNifBinary data_bin;
union { ErlNifResourceType* t; long l;} type;
union { void* p; long l;} data;
if (!enif_get_long(env, argv[0], &type.l)
|| !enif_inspect_binary(env, argv[1], &data_bin)
|| (data.p = enif_alloc_resource(env, type.t, data_bin.size))==NULL) {
return enif_make_badarg(env);
}
memcpy(data.p, data_bin.data, data_bin.size);
return enif_make_long(env, data.l);
}
static ERL_NIF_TERM make_resource(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
union { void* p; long l; } data;
if (!enif_get_long(env, argv[0], &data.l)) {
return enif_make_badarg(env);
}
return enif_make_resource(env, data.p);
}
static ERL_NIF_TERM make_new_resource(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ErlNifBinary data_bin;
union { ErlNifResourceType* t; long l;} type;
void* data;
ERL_NIF_TERM ret;
if (!enif_get_long(env, argv[0], &type.l)
|| !enif_inspect_binary(env, argv[1], &data_bin)
|| (data = enif_alloc_resource(env, type.t, data_bin.size))==NULL) {
return enif_make_badarg(env);
}
ret = enif_make_resource(env, data);
memcpy(data, data_bin.data, data_bin.size);
enif_release_resource(env, data);
return ret;
}
static ERL_NIF_TERM get_resource(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ErlNifBinary data_bin;
union { ErlNifResourceType* t; long l; } type;
union { void* p; long l; } data;
if (!enif_get_long(env, argv[0], &type.l)
|| !enif_get_resource(env, argv[1], type.t, &data.p)) {
return enif_make_badarg(env);
}
enif_alloc_binary(env, enif_sizeof_resource(env,data.p), &data_bin);
memcpy(data_bin.data, data.p, data_bin.size);
return enif_make_tuple2(env, enif_make_long(env,data.l),
enif_make_binary(env, &data_bin));
}
static ERL_NIF_TERM release_resource(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
union { void* p; long l; } data;
if (!enif_get_long(env, argv[0], &data.l)) {
return enif_make_badarg(env);
}
enif_release_resource(env, data.p);
return enif_make_atom(env,"ok");
}
static ErlNifFunc nif_funcs[] =
{
{"lib_version", 0, lib_version},
{"call_history", 0, call_history},
{"hold_nif_mod_priv_data", 1, hold_nif_mod_priv_data},
{"nif_mod_call_history", 0, nif_mod_call_history},
{"list_seq", 1, list_seq},
{"type_test", 0, type_test},
{"tuple_2_list", 1, tuple_2_list},
{"is_identical",2,is_identical},
{"compare",2,compare},
{"many_args_100", 100, many_args_100},
{"clone_bin", 1, clone_bin},
{"make_sub_bin", 3, make_sub_bin},
{"string_to_bin", 2, string_to_bin},
{"atom_to_bin", 2, atom_to_bin},
{"macros", 1, macros},
{"tuple_2_list_and_tuple",1,tuple_2_list_and_tuple},
{"iolist_2_bin", 1, iolist_2_bin},
{"get_resource_type", 1, get_resource_type},
{"alloc_resource", 2, alloc_resource},
{"make_resource", 1, make_resource},
{"get_resource", 2, get_resource},
{"release_resource", 1, release_resource},
{"last_resource_dtor_call", 0, last_resource_dtor_call},
{"make_new_resource", 2, make_new_resource}
};
ERL_NIF_INIT(nif_SUITE,nif_funcs,load,reload,upgrade,unload)