/home/travis/build/MoarVM/MoarVM/src/core/nativecall.c
Line | Count | Source (jump to first uncovered line) |
1 | | #include "moar.h" |
2 | | #ifndef _WIN32 |
3 | | #include <dlfcn.h> |
4 | | #endif |
5 | | |
6 | | /* Grabs a NativeCall body. */ |
7 | 6 | MVMNativeCallBody * MVM_nativecall_get_nc_body(MVMThreadContext *tc, MVMObject *obj) { |
8 | 6 | if (REPR(obj)->ID == MVM_REPR_ID_MVMNativeCall) |
9 | 6 | return (MVMNativeCallBody *)OBJECT_BODY(obj); |
10 | 6 | else |
11 | 0 | return (MVMNativeCallBody *)REPR(obj)->box_funcs.get_boxed_ref(tc, |
12 | 0 | STABLE(obj), obj, OBJECT_BODY(obj), MVM_REPR_ID_MVMNativeCall); |
13 | 6 | } |
14 | | |
15 | | /* Gets the flag for whether to free a string after a call or not. */ |
16 | 2 | static MVMint16 get_str_free_flag(MVMThreadContext *tc, MVMObject *info) { |
17 | 2 | MVMString *flag = tc->instance->str_consts.free_str; |
18 | 2 | if (MVM_repr_exists_key(tc, info, flag)) |
19 | 2 | if (!MVM_repr_get_int(tc, MVM_repr_at_key_o(tc, info, flag))) |
20 | 0 | return MVM_NATIVECALL_ARG_NO_FREE_STR; |
21 | 2 | return MVM_NATIVECALL_ARG_FREE_STR; |
22 | 2 | } |
23 | | |
24 | | /* Gets the flag for whether to free a string after a call or not. */ |
25 | 2 | static MVMint16 get_rw_flag(MVMThreadContext *tc, MVMObject *info) { |
26 | 2 | MVMString *flag = tc->instance->str_consts.rw; |
27 | 2 | if (MVM_repr_exists_key(tc, info, flag)) { |
28 | 0 | if (MVM_repr_get_int(tc, MVM_repr_at_key_o(tc, info, flag))) |
29 | 0 | return MVM_NATIVECALL_ARG_RW; |
30 | 0 | } |
31 | 2 | return MVM_NATIVECALL_ARG_NO_RW; |
32 | 2 | } |
33 | | |
34 | | /* Takes a hash describing a type hands back an argument type code. */ |
35 | 6 | MVMint16 MVM_nativecall_get_arg_type(MVMThreadContext *tc, MVMObject *info, MVMint16 is_return) { |
36 | 6 | MVMString *typename = MVM_repr_get_str(tc, MVM_repr_at_key_o(tc, info, |
37 | 6 | tc->instance->str_consts.type)); |
38 | 6 | char *ctypename = MVM_string_utf8_encode_C_string(tc, typename); |
39 | 6 | MVMint16 result; |
40 | 6 | if (strcmp(ctypename, "void") == 0) { |
41 | 2 | if (!is_return) { |
42 | 0 | MVM_free(ctypename); |
43 | 0 | MVM_exception_throw_adhoc(tc, |
44 | 0 | "Cannot use 'void' type except for on native call return values"); |
45 | 0 | } |
46 | 2 | result = MVM_NATIVECALL_ARG_VOID; |
47 | 2 | } |
48 | 4 | else if (strcmp(ctypename, "char") == 0) |
49 | 0 | result = MVM_NATIVECALL_ARG_CHAR | get_rw_flag(tc, info); |
50 | 4 | else if (strcmp(ctypename, "short") == 0) |
51 | 0 | result = MVM_NATIVECALL_ARG_SHORT | get_rw_flag(tc, info); |
52 | 4 | else if (strcmp(ctypename, "int") == 0) |
53 | 0 | result = MVM_NATIVECALL_ARG_INT | get_rw_flag(tc, info); |
54 | 4 | else if (strcmp(ctypename, "long") == 0) |
55 | 0 | result = MVM_NATIVECALL_ARG_LONG | get_rw_flag(tc, info); |
56 | 4 | else if (strcmp(ctypename, "longlong") == 0) |
57 | 0 | result = MVM_NATIVECALL_ARG_LONGLONG | get_rw_flag(tc, info); |
58 | 4 | else if (strcmp(ctypename, "uchar") == 0) |
59 | 0 | result = MVM_NATIVECALL_ARG_UCHAR | get_rw_flag(tc, info); |
60 | 4 | else if (strcmp(ctypename, "ushort") == 0) |
61 | 0 | result = MVM_NATIVECALL_ARG_USHORT | get_rw_flag(tc, info); |
62 | 4 | else if (strcmp(ctypename, "uint") == 0) |
63 | 0 | result = MVM_NATIVECALL_ARG_UINT | get_rw_flag(tc, info); |
64 | 4 | else if (strcmp(ctypename, "ulong") == 0) |
65 | 0 | result = MVM_NATIVECALL_ARG_ULONG | get_rw_flag(tc, info); |
66 | 4 | else if (strcmp(ctypename, "ulonglong") == 0) |
67 | 0 | result = MVM_NATIVECALL_ARG_ULONGLONG | get_rw_flag(tc, info); |
68 | 4 | else if (strcmp(ctypename, "float") == 0) |
69 | 0 | result = MVM_NATIVECALL_ARG_FLOAT | get_rw_flag(tc, info); |
70 | 4 | else if (strcmp(ctypename, "double") == 0) |
71 | 0 | result = MVM_NATIVECALL_ARG_DOUBLE | get_rw_flag(tc, info); |
72 | 4 | else if (strcmp(ctypename, "asciistr") == 0) |
73 | 0 | result = MVM_NATIVECALL_ARG_ASCIISTR | get_str_free_flag(tc, info); |
74 | 4 | else if (strcmp(ctypename, "utf8str") == 0) |
75 | 2 | result = MVM_NATIVECALL_ARG_UTF8STR | get_str_free_flag(tc, info); |
76 | 2 | else if (strcmp(ctypename, "utf16str") == 0) |
77 | 0 | result = MVM_NATIVECALL_ARG_UTF16STR | get_str_free_flag(tc, info); |
78 | 2 | else if (strcmp(ctypename, "cstruct") == 0) |
79 | 0 | result = MVM_NATIVECALL_ARG_CSTRUCT; |
80 | 2 | else if (strcmp(ctypename, "cppstruct") == 0) |
81 | 0 | result = MVM_NATIVECALL_ARG_CPPSTRUCT; |
82 | 2 | else if (strcmp(ctypename, "cpointer") == 0) |
83 | 2 | result = MVM_NATIVECALL_ARG_CPOINTER | get_rw_flag(tc, info); |
84 | 0 | else if (strcmp(ctypename, "carray") == 0) |
85 | 0 | result = MVM_NATIVECALL_ARG_CARRAY; |
86 | 0 | else if (strcmp(ctypename, "cunion") == 0) |
87 | 0 | result = MVM_NATIVECALL_ARG_CUNION; |
88 | 0 | else if (strcmp(ctypename, "vmarray") == 0) |
89 | 0 | result = MVM_NATIVECALL_ARG_VMARRAY; |
90 | 0 | else if (strcmp(ctypename, "callback") == 0) |
91 | 0 | result = MVM_NATIVECALL_ARG_CALLBACK; |
92 | 0 | else { |
93 | 0 | char *waste[] = { ctypename, NULL }; |
94 | 0 | MVM_exception_throw_adhoc_free(tc, waste, "Unknown type '%s' used for native call", ctypename); |
95 | 0 | } |
96 | 6 | MVM_free(ctypename); |
97 | 6 | return result; |
98 | 6 | } |
99 | | |
100 | 0 | MVMObject * MVM_nativecall_make_int(MVMThreadContext *tc, MVMObject *type, MVMint64 value) { |
101 | 0 | return type ? MVM_repr_box_int(tc, type, value) : NULL; |
102 | 0 | } |
103 | | |
104 | 0 | MVMObject * MVM_nativecall_make_uint(MVMThreadContext *tc, MVMObject *type, MVMuint64 value) { |
105 | 0 | return type ? MVM_repr_box_int(tc, type, (MVMint64)value) : NULL; |
106 | 0 | } |
107 | | |
108 | 0 | MVMObject * MVM_nativecall_make_num(MVMThreadContext *tc, MVMObject *type, MVMnum64 value) { |
109 | 0 | return type ? MVM_repr_box_num(tc, type, value) : NULL; |
110 | 0 | } |
111 | | |
112 | 0 | MVMObject * MVM_nativecall_make_str(MVMThreadContext *tc, MVMObject *type, MVMint16 ret_type, char *cstring) { |
113 | 0 | MVMObject *result = type; |
114 | 0 | if (cstring && type) { |
115 | 0 | MVMString *value; |
116 | 0 |
|
117 | 0 | MVM_gc_root_temp_push(tc, (MVMCollectable **)&type); |
118 | 0 |
|
119 | 0 | switch (ret_type & MVM_NATIVECALL_ARG_TYPE_MASK) { |
120 | 0 | case MVM_NATIVECALL_ARG_ASCIISTR: |
121 | 0 | value = MVM_string_ascii_decode(tc, tc->instance->VMString, cstring, strlen(cstring)); |
122 | 0 | break; |
123 | 0 | case MVM_NATIVECALL_ARG_UTF8STR: |
124 | 0 | value = MVM_string_utf8_decode(tc, tc->instance->VMString, cstring, strlen(cstring)); |
125 | 0 | break; |
126 | 0 | case MVM_NATIVECALL_ARG_UTF16STR: |
127 | 0 | value = MVM_string_utf16_decode(tc, tc->instance->VMString, cstring, strlen(cstring)); |
128 | 0 | break; |
129 | 0 | default: |
130 | 0 | MVM_exception_throw_adhoc(tc, "Internal error: unhandled encoding"); |
131 | 0 | } |
132 | 0 |
|
133 | 0 | MVM_gc_root_temp_pop(tc); |
134 | 0 | result = MVM_repr_box_str(tc, type, value); |
135 | 0 | if (ret_type & MVM_NATIVECALL_ARG_FREE_STR) |
136 | 0 | MVM_free(cstring); |
137 | 0 | } |
138 | 0 |
|
139 | 0 | return result; |
140 | 0 | } |
141 | | |
142 | | /* Constructs a boxed result using a CStruct REPR type. */ |
143 | 0 | MVMObject * MVM_nativecall_make_cstruct(MVMThreadContext *tc, MVMObject *type, void *cstruct) { |
144 | 0 | MVMObject *result = type; |
145 | 0 | if (cstruct && type) { |
146 | 0 | MVMCStructREPRData *repr_data = (MVMCStructREPRData *)STABLE(type)->REPR_data; |
147 | 0 | if (REPR(type)->ID != MVM_REPR_ID_MVMCStruct) |
148 | 0 | MVM_exception_throw_adhoc(tc, |
149 | 0 | "Native call expected return type with CStruct representation, but got a %s (%s)", REPR(type)->name, STABLE(type)->debug_name); |
150 | 0 | result = REPR(type)->allocate(tc, STABLE(type)); |
151 | 0 | ((MVMCStruct *)result)->body.cstruct = cstruct; |
152 | 0 | if (repr_data->num_child_objs) |
153 | 0 | ((MVMCStruct *)result)->body.child_objs = MVM_calloc(repr_data->num_child_objs, sizeof(MVMObject *)); |
154 | 0 | } |
155 | 0 | return result; |
156 | 0 | } |
157 | | |
158 | | /* Constructs a boxed result using a CUnion REPR type. */ |
159 | 0 | MVMObject * MVM_nativecall_make_cunion(MVMThreadContext *tc, MVMObject *type, void *cunion) { |
160 | 0 | MVMObject *result = type; |
161 | 0 | if (cunion && type) { |
162 | 0 | MVMCUnionREPRData *repr_data = (MVMCUnionREPRData *)STABLE(type)->REPR_data; |
163 | 0 | if (REPR(type)->ID != MVM_REPR_ID_MVMCUnion) |
164 | 0 | MVM_exception_throw_adhoc(tc, |
165 | 0 | "Native call expected return type with CUnion representation, but got a %s (%s)", REPR(type)->name, STABLE(type)->debug_name); |
166 | 0 | result = REPR(type)->allocate(tc, STABLE(type)); |
167 | 0 | ((MVMCUnion *)result)->body.cunion = cunion; |
168 | 0 | if (repr_data->num_child_objs) |
169 | 0 | ((MVMCUnion *)result)->body.child_objs = MVM_calloc(repr_data->num_child_objs, sizeof(MVMObject *)); |
170 | 0 | } |
171 | 0 | return result; |
172 | 0 | } |
173 | | |
174 | 0 | MVMObject * MVM_nativecall_make_cppstruct(MVMThreadContext *tc, MVMObject *type, void *cppstruct) { |
175 | 0 | MVMObject *result = type; |
176 | 0 | if (cppstruct && type) { |
177 | 0 | MVMCPPStructREPRData *repr_data = (MVMCPPStructREPRData *)STABLE(type)->REPR_data; |
178 | 0 | if (REPR(type)->ID != MVM_REPR_ID_MVMCPPStruct) |
179 | 0 | MVM_exception_throw_adhoc(tc, |
180 | 0 | "Native call expected return type with CPPStruct representation, but got a %s (%s)", REPR(type)->name, STABLE(type)->debug_name); |
181 | 0 | result = REPR(type)->allocate(tc, STABLE(type)); |
182 | 0 | ((MVMCPPStruct *)result)->body.cppstruct = cppstruct; |
183 | 0 | if (repr_data->num_child_objs) |
184 | 0 | ((MVMCPPStruct *)result)->body.child_objs = MVM_calloc(repr_data->num_child_objs, sizeof(MVMObject *)); |
185 | 0 | } |
186 | 0 | return result; |
187 | 0 | } |
188 | | |
189 | | /* Constructs a boxed result using a CPointer REPR type. */ |
190 | 1 | MVMObject * MVM_nativecall_make_cpointer(MVMThreadContext *tc, MVMObject *type, void *ptr) { |
191 | 1 | MVMObject *result = type; |
192 | 1 | if (ptr && type) { |
193 | 1 | if (REPR(type)->ID != MVM_REPR_ID_MVMCPointer) |
194 | 0 | MVM_exception_throw_adhoc(tc, |
195 | 0 | "Native call expected return type with CPointer representation, but got a %s (%s)", REPR(type)->name, STABLE(type)->debug_name); |
196 | 1 | result = REPR(type)->allocate(tc, STABLE(type)); |
197 | 1 | ((MVMCPointer *)result)->body.ptr = ptr; |
198 | 1 | } |
199 | 1 | return result; |
200 | 1 | } |
201 | | |
202 | | /* Constructs a boxed result using a CArray REPR type. */ |
203 | 0 | MVMObject * MVM_nativecall_make_carray(MVMThreadContext *tc, MVMObject *type, void *carray) { |
204 | 0 | MVMObject *result = type; |
205 | 0 | if (carray && type) { |
206 | 0 | if (REPR(type)->ID != MVM_REPR_ID_MVMCArray) |
207 | 0 | MVM_exception_throw_adhoc(tc, |
208 | 0 | "Native call expected return type with CArray representation, but got a %s (%s)", REPR(type)->name, STABLE(type)->debug_name); |
209 | 0 | result = REPR(type)->allocate(tc, STABLE(type)); |
210 | 0 | ((MVMCArray *)result)->body.storage = carray; |
211 | 0 | } |
212 | 0 | return result; |
213 | 0 | } |
214 | | |
215 | 0 | signed char MVM_nativecall_unmarshal_char(MVMThreadContext *tc, MVMObject *value) { |
216 | 0 | return (signed char)MVM_repr_get_int(tc, value); |
217 | 0 | } |
218 | | |
219 | 0 | signed short MVM_nativecall_unmarshal_short(MVMThreadContext *tc, MVMObject *value) { |
220 | 0 | return (signed short)MVM_repr_get_int(tc, value); |
221 | 0 | } |
222 | | |
223 | 0 | signed int MVM_nativecall_unmarshal_int(MVMThreadContext *tc, MVMObject *value) { |
224 | 0 | return (signed int)MVM_repr_get_int(tc, value); |
225 | 0 | } |
226 | | |
227 | 0 | signed long MVM_nativecall_unmarshal_long(MVMThreadContext *tc, MVMObject *value) { |
228 | 0 | return (signed long)MVM_repr_get_int(tc, value); |
229 | 0 | } |
230 | | |
231 | 0 | signed long long MVM_nativecall_unmarshal_longlong(MVMThreadContext *tc, MVMObject *value) { |
232 | 0 | return (signed long long)MVM_repr_get_int(tc, value); |
233 | 0 | } |
234 | | |
235 | 0 | unsigned char MVM_nativecall_unmarshal_uchar(MVMThreadContext *tc, MVMObject *value) { |
236 | 0 | return (unsigned char)MVM_repr_get_int(tc, value); |
237 | 0 | } |
238 | | |
239 | 0 | unsigned short MVM_nativecall_unmarshal_ushort(MVMThreadContext *tc, MVMObject *value) { |
240 | 0 | return (unsigned short)MVM_repr_get_int(tc, value); |
241 | 0 | } |
242 | | |
243 | 0 | unsigned int MVM_nativecall_unmarshal_uint(MVMThreadContext *tc, MVMObject *value) { |
244 | 0 | return (unsigned int)MVM_repr_get_int(tc, value); |
245 | 0 | } |
246 | | |
247 | 0 | unsigned long MVM_nativecall_unmarshal_ulong(MVMThreadContext *tc, MVMObject *value) { |
248 | 0 | return (unsigned long)MVM_repr_get_int(tc, value); |
249 | 0 | } |
250 | | |
251 | 0 | unsigned long long MVM_nativecall_unmarshal_ulonglong(MVMThreadContext *tc, MVMObject *value) { |
252 | 0 | return (unsigned long long)MVM_repr_get_int(tc, value); |
253 | 0 | } |
254 | | |
255 | 0 | float MVM_nativecall_unmarshal_float(MVMThreadContext *tc, MVMObject *value) { |
256 | 0 | return (float)MVM_repr_get_num(tc, value); |
257 | 0 | } |
258 | | |
259 | 0 | double MVM_nativecall_unmarshal_double(MVMThreadContext *tc, MVMObject *value) { |
260 | 0 | return (double)MVM_repr_get_num(tc, value); |
261 | 0 | } |
262 | | |
263 | 2 | char * MVM_nativecall_unmarshal_string(MVMThreadContext *tc, MVMObject *value, MVMint16 type, MVMint16 *free) { |
264 | 2 | if (IS_CONCRETE(value)) { |
265 | 2 | MVMString *value_str = MVM_repr_get_str(tc, value); |
266 | 2 | |
267 | 2 | /* Encode string. */ |
268 | 2 | char *str; |
269 | 2 | switch (type & MVM_NATIVECALL_ARG_TYPE_MASK) { |
270 | 0 | case MVM_NATIVECALL_ARG_ASCIISTR: |
271 | 0 | str = MVM_string_ascii_encode_any(tc, value_str); |
272 | 0 | break; |
273 | 0 | case MVM_NATIVECALL_ARG_UTF16STR: |
274 | 0 | str = MVM_string_utf16_encode(tc, value_str, 0); |
275 | 0 | break; |
276 | 2 | default: |
277 | 2 | str = MVM_string_utf8_encode_C_string(tc, value_str); |
278 | 2 | } |
279 | 2 | |
280 | 2 | /* Set whether to free it or not. */ |
281 | 2 | if (free) { |
282 | 2 | if (REPR(value)->ID == MVM_REPR_ID_MVMCStr) |
283 | 0 | *free = 0; /* Manually managed. */ |
284 | 2 | else if (free && type & MVM_NATIVECALL_ARG_FREE_STR_MASK) |
285 | 2 | *free = 1; |
286 | 2 | else |
287 | 0 | *free = 0; |
288 | 2 | } |
289 | 2 | |
290 | 2 | return str; |
291 | 2 | } |
292 | 0 | else { |
293 | 0 | return NULL; |
294 | 0 | } |
295 | 2 | } |
296 | | |
297 | 0 | void * MVM_nativecall_unmarshal_cstruct(MVMThreadContext *tc, MVMObject *value) { |
298 | 0 | if (!IS_CONCRETE(value)) |
299 | 0 | return NULL; |
300 | 0 | else if (REPR(value)->ID == MVM_REPR_ID_MVMCStruct) |
301 | 0 | return ((MVMCStruct *)value)->body.cstruct; |
302 | 0 | else |
303 | 0 | MVM_exception_throw_adhoc(tc, |
304 | 0 | "Native call expected return type with CStruct representation, but got a %s (%s)", REPR(value)->name, STABLE(value)->debug_name); |
305 | 0 | } |
306 | | |
307 | 0 | void * MVM_nativecall_unmarshal_cppstruct(MVMThreadContext *tc, MVMObject *value) { |
308 | 0 | if (!IS_CONCRETE(value)) |
309 | 0 | return NULL; |
310 | 0 | else if (REPR(value)->ID == MVM_REPR_ID_MVMCPPStruct) |
311 | 0 | return ((MVMCPPStruct *)value)->body.cppstruct; |
312 | 0 | else |
313 | 0 | MVM_exception_throw_adhoc(tc, |
314 | 0 | "Native call expected return type with CPPStruct representation, but got a %s (%s)", REPR(value)->name, STABLE(value)->debug_name); |
315 | 0 | } |
316 | | |
317 | 4 | void * MVM_nativecall_unmarshal_cpointer(MVMThreadContext *tc, MVMObject *value) { |
318 | 4 | if (!IS_CONCRETE(value)) |
319 | 3 | return NULL; |
320 | 1 | else if (REPR(value)->ID == MVM_REPR_ID_MVMCPointer) |
321 | 1 | return ((MVMCPointer *)value)->body.ptr; |
322 | 1 | else |
323 | 0 | MVM_exception_throw_adhoc(tc, |
324 | 0 | "Native call expected return type with CPointer representation, but got a %s (%s)", REPR(value)->name, STABLE(value)->debug_name); |
325 | 4 | } |
326 | | |
327 | 0 | void * MVM_nativecall_unmarshal_carray(MVMThreadContext *tc, MVMObject *value) { |
328 | 0 | if (!IS_CONCRETE(value)) |
329 | 0 | return NULL; |
330 | 0 | else if (REPR(value)->ID == MVM_REPR_ID_MVMCArray) |
331 | 0 | return ((MVMCArray *)value)->body.storage; |
332 | 0 | else |
333 | 0 | MVM_exception_throw_adhoc(tc, |
334 | 0 | "Native call expected return type with CArray representation, but got a %s (%s)", REPR(value)->name, STABLE(value)->debug_name); |
335 | 0 | } |
336 | | |
337 | 0 | void * MVM_nativecall_unmarshal_vmarray(MVMThreadContext *tc, MVMObject *value) { |
338 | 0 | if (!IS_CONCRETE(value)) |
339 | 0 | return NULL; |
340 | 0 | else if (REPR(value)->ID == MVM_REPR_ID_VMArray) { |
341 | 0 | MVMArrayBody *body = &((MVMArray *)value)->body; |
342 | 0 | MVMArrayREPRData *repr_data = (MVMArrayREPRData *)STABLE(value)->REPR_data; |
343 | 0 | size_t start_pos = body->start * repr_data->elem_size; |
344 | 0 | return ((char *)body->slots.any) + start_pos; |
345 | 0 | } |
346 | 0 | else |
347 | 0 | MVM_exception_throw_adhoc(tc, |
348 | 0 | "Native call expected object with Array representation, but got a %s (%s)", REPR(value)->name, STABLE(value)->debug_name); |
349 | 0 | } |
350 | | |
351 | 0 | void * MVM_nativecall_unmarshal_cunion(MVMThreadContext *tc, MVMObject *value) { |
352 | 0 | if (!IS_CONCRETE(value)) |
353 | 0 | return NULL; |
354 | 0 | else if (REPR(value)->ID == MVM_REPR_ID_MVMCUnion) |
355 | 0 | return ((MVMCUnion *)value)->body.cunion; |
356 | 0 | else |
357 | 0 | MVM_exception_throw_adhoc(tc, |
358 | 0 | "Native call expected return type with CUnion representation, but got a %s (%s)", REPR(value)->name, STABLE(value)->debug_name); |
359 | 0 | } |
360 | | |
361 | | #ifdef _WIN32 |
362 | | static const char *dlerror(void) |
363 | | { |
364 | | static char buf[32]; |
365 | | DWORD dw = GetLastError(); |
366 | | if (dw == 0) |
367 | | return NULL; |
368 | | sprintf(buf, "error 0x%x", (unsigned int)dw); |
369 | | return buf; |
370 | | } |
371 | | #endif |
372 | | |
373 | | /* Builds up a native call site out of the supplied arguments. */ |
374 | | void MVM_nativecall_build(MVMThreadContext *tc, MVMObject *site, MVMString *lib, |
375 | 3 | MVMString *sym, MVMString *conv, MVMObject *arg_info, MVMObject *ret_info) { |
376 | 3 | char *lib_name = MVM_string_utf8_c8_encode_C_string(tc, lib); |
377 | 3 | char *sym_name = MVM_string_utf8_c8_encode_C_string(tc, sym); |
378 | 3 | MVMint8 keep_sym_name = 0; |
379 | 3 | MVMint16 i; |
380 | 3 | |
381 | 3 | MVMObject *entry_point_o = (MVMObject *)MVM_repr_at_key_o(tc, ret_info, |
382 | 3 | tc->instance->str_consts.entry_point); |
383 | 3 | |
384 | 3 | /* Initialize the object; grab native call part of its body. */ |
385 | 3 | MVMNativeCallBody *body = MVM_nativecall_get_nc_body(tc, site); |
386 | 3 | |
387 | 3 | /* Try to load the library. */ |
388 | 3 | body->lib_name = lib_name; |
389 | 3 | body->lib_handle = MVM_nativecall_load_lib(strlen(lib_name) ? lib_name : NULL); |
390 | 3 | |
391 | 3 | if (!body->lib_handle) { |
392 | 0 | char *waste[] = { lib_name, NULL }; |
393 | 0 | MVM_free(sym_name); |
394 | 0 | MVM_exception_throw_adhoc_free(tc, waste, "Cannot locate native library '%s': %s", lib_name, dlerror()); |
395 | 0 | } |
396 | 3 | |
397 | 3 | /* Try to locate the symbol. */ |
398 | 3 | if (entry_point_o) { |
399 | 3 | body->entry_point = MVM_nativecall_unmarshal_cpointer(tc, entry_point_o); |
400 | 3 | body->sym_name = sym_name; |
401 | 3 | keep_sym_name = 1; |
402 | 3 | } |
403 | 3 | |
404 | 3 | if (!body->entry_point) { |
405 | 3 | body->entry_point = MVM_nativecall_find_sym(body->lib_handle, sym_name); |
406 | 3 | if (!body->entry_point) { |
407 | 0 | char *waste[] = { sym_name, lib_name, NULL }; |
408 | 0 | MVM_exception_throw_adhoc_free(tc, waste, "Cannot locate symbol '%s' in native library '%s'", |
409 | 0 | sym_name, lib_name); |
410 | 0 | } |
411 | 3 | body->sym_name = sym_name; |
412 | 3 | keep_sym_name = 1; |
413 | 3 | } |
414 | 3 | |
415 | 3 | if (keep_sym_name == 0) { |
416 | 0 | MVM_free(sym_name); |
417 | 0 | } |
418 | 3 | |
419 | 3 | /* Set calling convention, if any. */ |
420 | 3 | body->convention = MVM_nativecall_get_calling_convention(tc, conv); |
421 | 3 | |
422 | 3 | /* Transform each of the args info structures into a flag. */ |
423 | 3 | body->num_args = MVM_repr_elems(tc, arg_info); |
424 | 3 | body->arg_types = MVM_malloc(sizeof(MVMint16) * (body->num_args ? body->num_args : 1)); |
425 | 3 | body->arg_info = MVM_malloc(sizeof(MVMObject *) * (body->num_args ? body->num_args : 1)); |
426 | 3 | #ifdef HAVE_LIBFFI |
427 | | body->ffi_arg_types = MVM_malloc(sizeof(ffi_type *) * (body->num_args ? body->num_args : 1)); |
428 | | #endif |
429 | 6 | for (i = 0; i < body->num_args; i++) { |
430 | 3 | MVMObject *info = MVM_repr_at_pos_o(tc, arg_info, i); |
431 | 3 | body->arg_types[i] = MVM_nativecall_get_arg_type(tc, info, 0); |
432 | 3 | #ifdef HAVE_LIBFFI |
433 | | body->ffi_arg_types[i] = MVM_nativecall_get_ffi_type(tc, body->arg_types[i]); |
434 | | #endif |
435 | 3 | if(body->arg_types[i] == MVM_NATIVECALL_ARG_CALLBACK) { |
436 | 0 | MVM_ASSIGN_REF(tc, &(site->header), body->arg_info[i], |
437 | 0 | MVM_repr_at_key_o(tc, info, tc->instance->str_consts.callback_args)); |
438 | 0 | } |
439 | 3 | else { |
440 | 3 | body->arg_info[i] = NULL; |
441 | 3 | } |
442 | 3 | } |
443 | 3 | |
444 | 3 | /* Transform return argument type info a flag. */ |
445 | 3 | body->ret_type = MVM_nativecall_get_arg_type(tc, ret_info, 1); |
446 | 3 | #ifdef HAVE_LIBFFI |
447 | | body->ffi_ret_type = MVM_nativecall_get_ffi_type(tc, body->ret_type); |
448 | | #endif |
449 | 3 | } |
450 | | |
451 | 0 | static MVMObject * nativecall_cast(MVMThreadContext *tc, MVMObject *target_spec, MVMObject *target_type, void *cpointer_body) { |
452 | 0 | MVMObject *result = NULL; |
453 | 0 |
|
454 | 0 | MVMROOT(tc, target_spec, { |
455 | 0 | MVMROOT(tc, target_type, { |
456 | 0 | switch (REPR(target_type)->ID) { |
457 | 0 | case MVM_REPR_ID_P6opaque: { |
458 | 0 | const MVMStorageSpec *ss = REPR(target_spec)->get_storage_spec(tc, STABLE(target_spec)); |
459 | 0 | if(ss->can_box & MVM_STORAGE_SPEC_CAN_BOX_INT) { |
460 | 0 | MVMint64 value = 0; |
461 | 0 | if (ss->is_unsigned) |
462 | 0 | switch(ss->bits) { |
463 | 0 | case 8: |
464 | 0 | value = *(MVMuint8 *)cpointer_body; |
465 | 0 | break; |
466 | 0 | case 16: |
467 | 0 | value = *(MVMuint16 *)cpointer_body; |
468 | 0 | break; |
469 | 0 | case 32: |
470 | 0 | value = *(MVMuint32 *)cpointer_body; |
471 | 0 | break; |
472 | 0 | case 64: |
473 | 0 | default: |
474 | 0 | value = *(MVMuint64 *)cpointer_body; |
475 | 0 | } |
476 | 0 | else |
477 | 0 | switch(ss->bits) { |
478 | 0 | case 8: |
479 | 0 | value = *(MVMint8 *)cpointer_body; |
480 | 0 | break; |
481 | 0 | case 16: |
482 | 0 | value = *(MVMint16 *)cpointer_body; |
483 | 0 | break; |
484 | 0 | case 32: |
485 | 0 | value = *(MVMint32 *)cpointer_body; |
486 | 0 | break; |
487 | 0 | case 64: |
488 | 0 | default: |
489 | 0 | value = *(MVMint64 *)cpointer_body; |
490 | 0 | } |
491 | 0 |
|
492 | 0 | result = MVM_nativecall_make_int(tc, target_type, value); |
493 | 0 | } |
494 | 0 | else if(ss->can_box & MVM_STORAGE_SPEC_CAN_BOX_NUM) { |
495 | 0 | MVMnum64 value; |
496 | 0 |
|
497 | 0 | switch(ss->bits) { |
498 | 0 | case 32: |
499 | 0 | value = *(MVMnum32 *)cpointer_body; |
500 | 0 | break; |
501 | 0 | case 64: |
502 | 0 | default: |
503 | 0 | value = *(MVMnum64 *)cpointer_body; |
504 | 0 | } |
505 | 0 |
|
506 | 0 | result = MVM_nativecall_make_num(tc, target_type, value); |
507 | 0 | } |
508 | 0 | else if(ss->can_box & MVM_STORAGE_SPEC_CAN_BOX_STR) { |
509 | 0 | result = MVM_nativecall_make_str(tc, target_type, MVM_NATIVECALL_ARG_UTF8STR, |
510 | 0 | (char *)cpointer_body); |
511 | 0 | } |
512 | 0 | else |
513 | 0 | MVM_exception_throw_adhoc(tc, "Internal error: unhandled target type"); |
514 | 0 |
|
515 | 0 | break; |
516 | 0 | } |
517 | 0 | case MVM_REPR_ID_P6int: { |
518 | 0 | const MVMStorageSpec *ss = REPR(target_spec)->get_storage_spec(tc, STABLE(target_spec)); |
519 | 0 | MVMint64 value; |
520 | 0 | if (ss->is_unsigned) |
521 | 0 | switch(ss->bits) { |
522 | 0 | case 8: |
523 | 0 | value = *(MVMuint8 *)cpointer_body; |
524 | 0 | break; |
525 | 0 | case 16: |
526 | 0 | value = *(MVMuint16 *)cpointer_body; |
527 | 0 | break; |
528 | 0 | case 32: |
529 | 0 | value = *(MVMuint32 *)cpointer_body; |
530 | 0 | break; |
531 | 0 | case 64: |
532 | 0 | default: |
533 | 0 | value = *(MVMuint64 *)cpointer_body; |
534 | 0 | } |
535 | 0 | else |
536 | 0 | switch(ss->bits) { |
537 | 0 | case 8: |
538 | 0 | value = *(MVMint8 *)cpointer_body; |
539 | 0 | break; |
540 | 0 | case 16: |
541 | 0 | value = *(MVMint16 *)cpointer_body; |
542 | 0 | break; |
543 | 0 | case 32: |
544 | 0 | value = *(MVMint32 *)cpointer_body; |
545 | 0 | break; |
546 | 0 | case 64: |
547 | 0 | default: |
548 | 0 | value = *(MVMint64 *)cpointer_body; |
549 | 0 | } |
550 | 0 | result = MVM_nativecall_make_int(tc, target_type, value); |
551 | 0 | break; |
552 | 0 | } |
553 | 0 | case MVM_REPR_ID_P6num: { |
554 | 0 | const MVMStorageSpec *ss = REPR(target_spec)->get_storage_spec(tc, STABLE(target_spec)); |
555 | 0 | MVMnum64 value; |
556 | 0 |
|
557 | 0 | switch(ss->bits) { |
558 | 0 | case 32: |
559 | 0 | value = *(MVMnum32 *)cpointer_body; |
560 | 0 | break; |
561 | 0 | case 64: |
562 | 0 | default: |
563 | 0 | value = *(MVMnum64 *)cpointer_body; |
564 | 0 | } |
565 | 0 |
|
566 | 0 | result = MVM_nativecall_make_num(tc, target_type, value); |
567 | 0 | break; |
568 | 0 | } |
569 | 0 | case MVM_REPR_ID_MVMCStr: |
570 | 0 | case MVM_REPR_ID_P6str: |
571 | 0 | result = MVM_nativecall_make_str(tc, target_type, MVM_NATIVECALL_ARG_UTF8STR, |
572 | 0 | (char *)cpointer_body); |
573 | 0 | break; |
574 | 0 | case MVM_REPR_ID_MVMCStruct: |
575 | 0 | result = MVM_nativecall_make_cstruct(tc, target_type, (void *)cpointer_body); |
576 | 0 | break; |
577 | 0 | case MVM_REPR_ID_MVMCUnion: |
578 | 0 | result = MVM_nativecall_make_cunion(tc, target_type, (void *)cpointer_body); |
579 | 0 | break; |
580 | 0 | case MVM_REPR_ID_MVMCPointer: |
581 | 0 | result = MVM_nativecall_make_cpointer(tc, target_type, (void *)cpointer_body); |
582 | 0 | break; |
583 | 0 | case MVM_REPR_ID_MVMCArray: { |
584 | 0 | result = MVM_nativecall_make_carray(tc, target_type, (void *)cpointer_body); |
585 | 0 | break; |
586 | 0 | } |
587 | 0 | default: |
588 | 0 | MVM_exception_throw_adhoc(tc, "Internal error: unhandled target type"); |
589 | 0 | } |
590 | 0 | }); |
591 | 0 | }); |
592 | 0 |
|
593 | 0 | return result; |
594 | 0 | } |
595 | | |
596 | 0 | MVMObject * MVM_nativecall_global(MVMThreadContext *tc, MVMString *lib, MVMString *sym, MVMObject *target_spec, MVMObject *target_type) { |
597 | 0 | char *lib_name = MVM_string_utf8_c8_encode_C_string(tc, lib); |
598 | 0 | char *sym_name = MVM_string_utf8_c8_encode_C_string(tc, sym); |
599 | 0 | DLLib *lib_handle; |
600 | 0 | void *entry_point; |
601 | 0 | MVMObject *ret = NULL; |
602 | 0 |
|
603 | 0 | /* Try to load the library. */ |
604 | 0 | lib_handle = MVM_nativecall_load_lib(strlen(lib_name) ? lib_name : NULL); |
605 | 0 | if (!lib_handle) { |
606 | 0 | char *waste[] = { lib_name, NULL }; |
607 | 0 | MVM_free(sym_name); |
608 | 0 | MVM_exception_throw_adhoc_free(tc, waste, "Cannot locate native library '%s': %s", lib_name, dlerror()); |
609 | 0 | } |
610 | 0 |
|
611 | 0 | /* Try to locate the symbol. */ |
612 | 0 | entry_point = MVM_nativecall_find_sym(lib_handle, sym_name); |
613 | 0 | if (!entry_point) { |
614 | 0 | char *waste[] = { sym_name, lib_name, NULL }; |
615 | 0 | MVM_exception_throw_adhoc_free(tc, waste, "Cannot locate symbol '%s' in native library '%s'", |
616 | 0 | sym_name, lib_name); |
617 | 0 | } |
618 | 0 | MVM_free(sym_name); |
619 | 0 | MVM_free(lib_name); |
620 | 0 |
|
621 | 0 | if (REPR(target_type)->ID == MVM_REPR_ID_MVMCStr |
622 | 0 | || REPR(target_type)->ID == MVM_REPR_ID_P6str |
623 | 0 | || (REPR(target_type)->ID == MVM_REPR_ID_P6opaque |
624 | 0 | && REPR(target_spec)->get_storage_spec(tc, STABLE(target_spec))->can_box & MVM_STORAGE_SPEC_CAN_BOX_STR)) { |
625 | 0 | entry_point = *(void **)entry_point; |
626 | 0 | } |
627 | 0 |
|
628 | 0 | ret = nativecall_cast(tc, target_spec, target_type, entry_point); |
629 | 0 | MVM_nativecall_free_lib(lib_handle); |
630 | 0 | return ret; |
631 | 0 | } |
632 | | |
633 | 0 | MVMObject * MVM_nativecall_cast(MVMThreadContext *tc, MVMObject *target_spec, MVMObject *target_type, MVMObject *source) { |
634 | 0 | void *data_body; |
635 | 0 |
|
636 | 0 | if (!source) |
637 | 0 | return target_type; |
638 | 0 |
|
639 | 0 | if (REPR(source)->ID == MVM_REPR_ID_MVMCStruct) |
640 | 0 | data_body = MVM_nativecall_unmarshal_cstruct(tc, source); |
641 | 0 | else if (REPR(source)->ID == MVM_REPR_ID_MVMCPPStruct) |
642 | 0 | data_body = MVM_nativecall_unmarshal_cppstruct(tc, source); |
643 | 0 | else if (REPR(source)->ID == MVM_REPR_ID_MVMCUnion) |
644 | 0 | data_body = MVM_nativecall_unmarshal_cunion(tc, source); |
645 | 0 | else if (REPR(source)->ID == MVM_REPR_ID_MVMCPointer) |
646 | 0 | data_body = MVM_nativecall_unmarshal_cpointer(tc, source); |
647 | 0 | else if (REPR(source)->ID == MVM_REPR_ID_MVMCArray) |
648 | 0 | data_body = MVM_nativecall_unmarshal_carray(tc, source); |
649 | 0 | else if (REPR(source)->ID == MVM_REPR_ID_VMArray) |
650 | 0 | data_body = MVM_nativecall_unmarshal_vmarray(tc, source); |
651 | 0 | else |
652 | 0 | MVM_exception_throw_adhoc(tc, |
653 | 0 | "Native call expected return type with CPointer, CStruct, CArray, or VMArray representation, but got a %s (%s)", REPR(source)->name, STABLE(source)->debug_name); |
654 | 0 | return nativecall_cast(tc, target_spec, target_type, data_body); |
655 | 0 | } |
656 | | |
657 | 0 | MVMint64 MVM_nativecall_sizeof(MVMThreadContext *tc, MVMObject *obj) { |
658 | 0 | if (REPR(obj)->ID == MVM_REPR_ID_MVMCStruct) |
659 | 0 | return ((MVMCStructREPRData *)STABLE(obj)->REPR_data)->struct_size; |
660 | 0 | else if (REPR(obj)->ID == MVM_REPR_ID_MVMCPPStruct) |
661 | 0 | return ((MVMCPPStructREPRData *)STABLE(obj)->REPR_data)->struct_size; |
662 | 0 | else if (REPR(obj)->ID == MVM_REPR_ID_MVMCUnion) |
663 | 0 | return ((MVMCUnionREPRData *)STABLE(obj)->REPR_data)->struct_size; |
664 | 0 | else if (REPR(obj)->ID == MVM_REPR_ID_P6int) |
665 | 0 | return ((MVMP6intREPRData *)STABLE(obj)->REPR_data)->bits / 8; |
666 | 0 | else if (REPR(obj)->ID == MVM_REPR_ID_P6num) |
667 | 0 | return ((MVMP6numREPRData *)STABLE(obj)->REPR_data)->bits / 8; |
668 | 0 | else if (REPR(obj)->ID == MVM_REPR_ID_MVMCPointer |
669 | 0 | || REPR(obj)->ID == MVM_REPR_ID_MVMCArray |
670 | 0 | || REPR(obj)->ID == MVM_REPR_ID_MVMCStr |
671 | 0 | || REPR(obj)->ID == MVM_REPR_ID_P6str) |
672 | 0 | return sizeof(void *); |
673 | 0 | else |
674 | 0 | MVM_exception_throw_adhoc(tc, |
675 | 0 | "NativeCall op sizeof expected type with CPointer, CStruct, CArray, P6int or P6num representation, but got a %s (%s)", |
676 | 0 | REPR(obj)->name, STABLE(obj)->debug_name); |
677 | 0 | } |
678 | | |
679 | | /* Write-barriers a dyncall object so that delayed changes to the C-side of |
680 | | * objects are propagated to the HLL side. All CArray and CStruct arguments to |
681 | | * C functions are write-barriered automatically, so this should be necessary |
682 | | * only in the rarest of cases. */ |
683 | 3 | void MVM_nativecall_refresh(MVMThreadContext *tc, MVMObject *cthingy) { |
684 | 3 | if (!IS_CONCRETE(cthingy)) |
685 | 0 | return; |
686 | 3 | if (REPR(cthingy)->ID == MVM_REPR_ID_MVMCArray) { |
687 | 0 | MVMCArrayBody *body = (MVMCArrayBody *)OBJECT_BODY(cthingy); |
688 | 0 | MVMCArrayREPRData *repr_data = (MVMCArrayREPRData *)STABLE(cthingy)->REPR_data; |
689 | 0 | void **storage = (void **) body->storage; |
690 | 0 | MVMint64 i; |
691 | 0 |
|
692 | 0 | /* No need to check for numbers. They're stored directly in the array. */ |
693 | 0 | if (repr_data->elem_kind == MVM_CARRAY_ELEM_KIND_NUMERIC) |
694 | 0 | return; |
695 | 0 |
|
696 | 0 | for (i = 0; i < body->elems; i++) { |
697 | 0 | void *cptr; /* The pointer in the C storage. */ |
698 | 0 | void *objptr; /* The pointer in the object representing the C object. */ |
699 | 0 |
|
700 | 0 | /* Ignore elements where we haven't generated an object. */ |
701 | 0 | if (!body->child_objs[i]) |
702 | 0 | continue; |
703 | 0 |
|
704 | 0 | cptr = storage[i]; |
705 | 0 | if (IS_CONCRETE(body->child_objs[i])) { |
706 | 0 | switch (repr_data->elem_kind) { |
707 | 0 | case MVM_CARRAY_ELEM_KIND_CARRAY: |
708 | 0 | objptr = ((MVMCArrayBody *)OBJECT_BODY(body->child_objs[i]))->storage; |
709 | 0 | break; |
710 | 0 | case MVM_CARRAY_ELEM_KIND_CPOINTER: |
711 | 0 | objptr = ((MVMCPointerBody *)OBJECT_BODY(body->child_objs[i]))->ptr; |
712 | 0 | break; |
713 | 0 | case MVM_CARRAY_ELEM_KIND_CSTRUCT: |
714 | 0 | objptr = ((MVMCStructBody *)OBJECT_BODY(body->child_objs[i]))->cstruct; |
715 | 0 | break; |
716 | 0 | case MVM_CARRAY_ELEM_KIND_CUNION: |
717 | 0 | objptr = ((MVMCUnionBody *)OBJECT_BODY(body->child_objs[i]))->cunion; |
718 | 0 | break; |
719 | 0 | case MVM_CARRAY_ELEM_KIND_STRING: |
720 | 0 | objptr = NULL; /* TODO */ |
721 | 0 | break; |
722 | 0 | default: |
723 | 0 | MVM_exception_throw_adhoc(tc, |
724 | 0 | "Fatal error: bad elem_kind (%d) in CArray write barrier", |
725 | 0 | repr_data->elem_kind); |
726 | 0 | } |
727 | 0 | } |
728 | 0 | else { |
729 | 0 | objptr = NULL; |
730 | 0 | } |
731 | 0 |
|
732 | 0 | if (objptr != cptr) |
733 | 0 | body->child_objs[i] = NULL; |
734 | 0 | else |
735 | 0 | MVM_nativecall_refresh(tc, body->child_objs[i]); |
736 | 0 | } |
737 | 0 | } |
738 | 3 | else if (REPR(cthingy)->ID == MVM_REPR_ID_MVMCStruct) { |
739 | 0 | MVMCStructBody *body = (MVMCStructBody *)OBJECT_BODY(cthingy); |
740 | 0 | MVMCStructREPRData *repr_data = (MVMCStructREPRData *)STABLE(cthingy)->REPR_data; |
741 | 0 | char *storage = (char *) body->cstruct; |
742 | 0 | MVMint64 i; |
743 | 0 |
|
744 | 0 | for (i = 0; i < repr_data->num_attributes; i++) { |
745 | 0 | MVMint32 kind = repr_data->attribute_locations[i] & MVM_CSTRUCT_ATTR_MASK; |
746 | 0 | MVMint32 slot = repr_data->attribute_locations[i] >> MVM_CSTRUCT_ATTR_SHIFT; |
747 | 0 | void *cptr; /* The pointer in the C storage. */ |
748 | 0 | void *objptr; /* The pointer in the object representing the C object. */ |
749 | 0 |
|
750 | 0 | if (kind == MVM_CSTRUCT_ATTR_IN_STRUCT || !body->child_objs[slot]) |
751 | 0 | continue; |
752 | 0 |
|
753 | 0 | cptr = *((void **)(storage + repr_data->struct_offsets[i])); |
754 | 0 | if (IS_CONCRETE(body->child_objs[slot])) { |
755 | 0 | switch (kind) { |
756 | 0 | case MVM_CSTRUCT_ATTR_CARRAY: |
757 | 0 | objptr = ((MVMCArrayBody *)OBJECT_BODY(body->child_objs[slot]))->storage; |
758 | 0 | break; |
759 | 0 | case MVM_CSTRUCT_ATTR_CPTR: |
760 | 0 | objptr = ((MVMCPointerBody *)OBJECT_BODY(body->child_objs[slot]))->ptr; |
761 | 0 | break; |
762 | 0 | case MVM_CSTRUCT_ATTR_CSTRUCT: |
763 | 0 | objptr = (MVMCStructBody *)OBJECT_BODY(body->child_objs[slot]); |
764 | 0 | break; |
765 | 0 | case MVM_CSTRUCT_ATTR_CUNION: |
766 | 0 | objptr = (MVMCUnionBody *)OBJECT_BODY(body->child_objs[slot]); |
767 | 0 | break; |
768 | 0 | case MVM_CSTRUCT_ATTR_STRING: |
769 | 0 | objptr = NULL; |
770 | 0 | break; |
771 | 0 | default: |
772 | 0 | MVM_exception_throw_adhoc(tc, |
773 | 0 | "Fatal error: bad kind (%d) in CStruct write barrier", |
774 | 0 | kind); |
775 | 0 | } |
776 | 0 | } |
777 | 0 | else { |
778 | 0 | objptr = NULL; |
779 | 0 | } |
780 | 0 |
|
781 | 0 | if (objptr != cptr) |
782 | 0 | body->child_objs[slot] = NULL; |
783 | 0 | else |
784 | 0 | MVM_nativecall_refresh(tc, body->child_objs[slot]); |
785 | 0 | } |
786 | 0 | } |
787 | 3 | else if (REPR(cthingy)->ID == MVM_REPR_ID_MVMCPPStruct) { |
788 | 0 | MVMCPPStructBody *body = (MVMCPPStructBody *)OBJECT_BODY(cthingy); |
789 | 0 | MVMCPPStructREPRData *repr_data = (MVMCPPStructREPRData *)STABLE(cthingy)->REPR_data; |
790 | 0 | char *storage = (char *) body->cppstruct; |
791 | 0 | MVMint64 i; |
792 | 0 |
|
793 | 0 | for (i = 0; i < repr_data->num_attributes; i++) { |
794 | 0 | MVMint32 kind = repr_data->attribute_locations[i] & MVM_CPPSTRUCT_ATTR_MASK; |
795 | 0 | MVMint32 slot = repr_data->attribute_locations[i] >> MVM_CPPSTRUCT_ATTR_SHIFT; |
796 | 0 | void *cptr; /* The pointer in the C storage. */ |
797 | 0 | void *objptr; /* The pointer in the object representing the C object. */ |
798 | 0 |
|
799 | 0 | if (kind == MVM_CPPSTRUCT_ATTR_IN_STRUCT || !body->child_objs[slot]) |
800 | 0 | continue; |
801 | 0 |
|
802 | 0 | cptr = *((void **)(storage + repr_data->struct_offsets[i])); |
803 | 0 | if (IS_CONCRETE(body->child_objs[slot])) { |
804 | 0 | switch (kind) { |
805 | 0 | case MVM_CPPSTRUCT_ATTR_CARRAY: |
806 | 0 | objptr = ((MVMCArrayBody *)OBJECT_BODY(body->child_objs[slot]))->storage; |
807 | 0 | break; |
808 | 0 | case MVM_CPPSTRUCT_ATTR_CPTR: |
809 | 0 | objptr = ((MVMCPointerBody *)OBJECT_BODY(body->child_objs[slot]))->ptr; |
810 | 0 | break; |
811 | 0 | case MVM_CPPSTRUCT_ATTR_CSTRUCT: |
812 | 0 | objptr = (MVMCStructBody *)OBJECT_BODY(body->child_objs[slot]); |
813 | 0 | break; |
814 | 0 | case MVM_CPPSTRUCT_ATTR_STRING: |
815 | 0 | objptr = NULL; |
816 | 0 | break; |
817 | 0 | default: |
818 | 0 | MVM_exception_throw_adhoc(tc, |
819 | 0 | "Fatal error: bad kind (%d) in CPPStruct write barrier", |
820 | 0 | kind); |
821 | 0 | } |
822 | 0 | } |
823 | 0 | else { |
824 | 0 | objptr = NULL; |
825 | 0 | } |
826 | 0 |
|
827 | 0 | if (objptr != cptr) |
828 | 0 | body->child_objs[slot] = NULL; |
829 | 0 | else |
830 | 0 | MVM_nativecall_refresh(tc, body->child_objs[slot]); |
831 | 0 | } |
832 | 0 | } |
833 | 3 | } |