1 ;;;; foreign.test --- FFI. -*- mode: scheme; coding: utf-8; -*-
3 ;;;; Copyright (C) 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
5 ;;;; This library is free software; you can redistribute it and/or
6 ;;;; modify it under the terms of the GNU Lesser General Public
7 ;;;; License as published by the Free Software Foundation; either
8 ;;;; version 3 of the License, or (at your option) any later version.
10 ;;;; This library is distributed in the hope that it will be useful,
11 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 ;;;; Lesser General Public License for more details.
15 ;;;; You should have received a copy of the GNU Lesser General Public
16 ;;;; License along with this library; if not, write to the Free Software
17 ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 ;;; See also ../standalone/test-ffi for FFI tests.
23 (define-module (test-foreign)
24 #:use-module (system foreign)
25 #:use-module (rnrs bytevectors)
26 #:use-module (srfi srfi-1)
27 #:use-module (srfi srfi-26)
28 #:use-module (ice-9 format)
29 #:use-module (test-suite lib))
32 (with-test-prefix "dynamic-pointer"
36 '(misc-error . "^Symbol not found")
37 (dynamic-func "does_not_exist___" (dynamic-link))))
40 (with-test-prefix "null pointer"
43 (pointer? %null-pointer))
46 (= 0 (pointer-address %null-pointer)))
48 (pass-if "null pointer identity"
49 (eq? %null-pointer (make-pointer 0)))
51 (pass-if "null-pointer? %null-pointer"
52 (null-pointer? %null-pointer))
54 (pass-if-exception "pointer->bytevector %null-pointer"
55 exception:null-pointer-error
56 (pointer->bytevector %null-pointer 7)))
59 (with-test-prefix "make-pointer"
62 (pointer? (make-pointer 123)))
64 (pass-if "address preserved"
65 (= 123 (pointer-address (make-pointer 123))))
68 (equal? (make-pointer 123) (make-pointer 123)))
70 (pass-if "equal? modulo finalizer"
71 (let ((finalizer (false-if-exception
72 (dynamic-func "scm_is_pair" (dynamic-link)))))
74 (throw 'unresolved) ; Windows or a static build
75 (equal? (make-pointer 123)
76 (make-pointer 123 finalizer)))))
78 (pass-if "equal? modulo finalizer (set-pointer-finalizer!)"
79 (let ((finalizer (false-if-exception
80 (dynamic-func "scm_is_pair" (dynamic-link))))
81 (ptr (make-pointer 123)))
83 (throw 'unresolved) ; Windows or a static build
85 (set-pointer-finalizer! ptr finalizer)
86 (equal? (make-pointer 123) ptr)))))
89 (not (equal? (make-pointer 123) (make-pointer 456)))))
92 (with-test-prefix "pointer<->scm"
95 (equal? (pointer->scm (scm->pointer #\newline))
98 (pass-if "non-immediates"
99 (equal? (pointer->scm (scm->pointer "Hello, world!"))
103 (define-wrapped-pointer-type foo
107 (format p "#<foo! ~a>" (pointer-address (unwrap-foo x)))))
109 (with-test-prefix "define-wrapped-pointer-type"
112 (foo? (wrap-foo %null-pointer)))
114 (pass-if "unwrap-foo"
115 (let ((p (make-pointer 123)))
116 (eq? p (unwrap-foo (wrap-foo p)))))
119 (let ((p1 (make-pointer 123))
120 (p2 (make-pointer 123)))
125 (string=? "#<foo! 123>"
126 (with-output-to-string
128 (write (wrap-foo (make-pointer 123))))))))
131 (with-test-prefix "pointer<->bytevector"
134 (let ((bv #vu8(0 1 2 3 4 5 6 7)))
135 (equal? (pointer->bytevector (bytevector->pointer bv)
136 (bytevector-length bv))
139 (pass-if "pointer from bits"
140 (let* ((bytes (iota (sizeof '*)))
141 (bv (u8-list->bytevector bytes))
142 (fold (case (native-endianness)
143 ((little) fold-right)
145 (else (error "unsupported endianness")))))
147 (make-pointer (bytevector-uint-ref bv 0 (native-endianness)
149 (fold (lambda (byte address)
150 (+ byte (* 256 address)))
154 (pass-if "dereference-pointer"
155 (let* ((bytes (iota (sizeof '*)))
156 (bv (u8-list->bytevector bytes))
157 (fold (case (native-endianness)
158 ((little) fold-right)
160 (else (error "unsupported endianness")))))
162 (dereference-pointer (bytevector->pointer bv)))
163 (fold (lambda (byte address)
164 (+ byte (* 256 address)))
169 (with-test-prefix "pointer<->string"
171 (pass-if-exception "%default-port-conversion-strategy is error"
172 exception:encoding-error
174 (with-fluids ((%default-port-conversion-strategy 'error))
175 (string->pointer s "ISO-8859-1"))))
177 (pass-if "%default-port-conversion-strategy is escape"
179 (equal? (with-fluids ((%default-port-conversion-strategy 'escape))
180 (pointer->string (string->pointer s "ISO-8859-1")))
181 (format #f "te\\u~4,'0xniko"
182 (char->integer #\ĥ)))))
184 (pass-if "%default-port-conversion-strategy is substitute"
186 (member (negate (negate member))))
187 (member (with-fluids ((%default-port-conversion-strategy 'substitute))
188 (pointer->string (string->pointer s "ISO-8859-1")))
191 ;; This form is found on FreeBSD 8.2 and Darwin 10.8.0.
195 (let ((s "hello, world"))
196 (string=? s (pointer->string (string->pointer s)))))
198 (pass-if "bijection [latin1]"
200 (let ((s "Szép jó napot!"))
201 (string=? s (pointer->string (string->pointer s))))))
203 (pass-if "bijection, utf-8"
204 (let ((s "hello, world"))
205 (string=? s (pointer->string (string->pointer s "utf-8")
208 (pass-if "bijection, utf-8 [latin1]"
209 (let ((s "Szép jó napot!"))
210 (string=? s (pointer->string (string->pointer s "utf-8")
215 (with-test-prefix "pointer->procedure"
217 (pass-if-exception "object instead of pointer"
218 exception:wrong-type-arg
219 (let ((p (pointer->procedure '* %null-pointer '(*))))
223 (with-test-prefix "procedure->pointer"
226 ;; Bindings for libc's `qsort' function.
227 ;; On some platforms, such as MinGW, `qsort' is visible only if
228 ;; linking with `-export-dynamic'. Just skip these tests when it's
231 (pointer->procedure void
232 (dynamic-func "qsort" (dynamic-link))
233 (list '* size_t size_t '*))))
235 (define (dereference-pointer-to-byte ptr)
236 (let ((b (pointer->bytevector ptr 1)))
237 (bytevector-u8-ref b 0)))
240 '(7 1 127 3 5 4 77 2 9 0))
243 (if (and qsort (defined? 'procedure->pointer))
247 (- (dereference-pointer-to-byte x)
248 (dereference-pointer-to-byte y))))
249 (ptr (procedure->pointer int cmp (list '* '*)))
250 (bv (u8-list->bytevector input)))
251 (qsort (bytevector->pointer bv) (bytevector-length bv) 1
252 (procedure->pointer int cmp (list '* '*)))
254 (equal? (bytevector->u8-list bv)
256 (throw 'unresolved)))
258 (pass-if-exception "qsort, wrong return type"
259 exception:wrong-type-arg
261 (if (and qsort (defined? 'procedure->pointer))
262 (let* ((cmp (lambda (x y) #f)) ; wrong return type
263 (ptr (procedure->pointer int cmp (list '* '*)))
264 (bv (u8-list->bytevector input)))
265 (qsort (bytevector->pointer bv) (bytevector-length bv) 1
266 (procedure->pointer int cmp (list '* '*)))
268 (throw 'unresolved)))
270 (pass-if-exception "qsort, wrong arity"
271 exception:wrong-num-args
273 (if (and qsort (defined? 'procedure->pointer))
274 (let* ((cmp (lambda (x y z) #f)) ; wrong arity
275 (ptr (procedure->pointer int cmp (list '* '*)))
276 (bv (u8-list->bytevector input)))
277 (qsort (bytevector->pointer bv) (bytevector-length bv) 1
278 (procedure->pointer int cmp (list '* '*)))
280 (throw 'unresolved)))
283 (if (defined? 'procedure->pointer)
284 (let* ((proc (lambda (x y z)
287 (args (list float int16 double))
288 (proc* (pointer->procedure ret
289 (procedure->pointer ret proc args)
291 (arg1 (map (cut / <> 2.0) (iota 123)))
292 (arg2 (iota 123 32000))
293 (arg3 (map (cut / <> 4.0) (iota 123 100 4))))
294 (equal? (map proc arg1 arg2 arg3)
295 (map proc* arg1 arg2 arg3)))
296 (throw 'unresolved)))
298 (pass-if "procedures returning a pointer"
299 (if (defined? 'procedure->pointer)
301 (proc (lambda (i) (set! called? #t) (make-pointer i)))
302 (pointer (procedure->pointer '* proc (list int)))
303 (proc* (pointer->procedure '* pointer (list int)))
304 (result (proc* 777)))
305 (and called? (equal? result (make-pointer 777))))
306 (throw 'unresolved)))
308 (pass-if "procedures returning void"
309 (if (defined? 'procedure->pointer)
311 (proc (lambda () (set! called? #t)))
312 (pointer (procedure->pointer void proc '()))
313 (proc* (pointer->procedure void pointer '())))
316 (throw 'unresolved)))
318 (pass-if "procedure is retained"
319 ;; The lambda passed to `procedure->pointer' must remain live.
320 (if (defined? 'procedure->pointer)
321 (let* ((ptr (procedure->pointer int
324 (procs (unfold (cut >= <> 10000)
326 (pointer->procedure int ptr (list int)))
331 (map (lambda (f) (f 2)) procs)))
332 (throw 'unresolved))))
335 (with-test-prefix "structs"
337 (pass-if "sizeof { int8, double }"
338 (= (sizeof (list int8 double))
339 (+ (alignof double) (sizeof double))))
341 (pass-if "sizeof { double, int8 }"
342 (= (sizeof (list double int8))
343 (+ (alignof double) (sizeof double))))
345 (pass-if "sizeof { short, int, long, pointer }"
346 (let ((layout (list short int long '*)))
348 (reduce + 0.0 (map sizeof layout)))))
350 (pass-if "alignof { int8, double, int8 }"
351 ;; alignment of the most strictly aligned component
352 (let ((layout (list int8 double int8)))
353 (= (alignof layout) (alignof double))))
355 (pass-if "parse-c-struct"
356 (let ((layout (list int64 uint8))
357 (data (list -300 43)))
358 (equal? (parse-c-struct (make-c-struct layout data)
362 (pass-if "alignment constraints honored"
363 (let ((layout (list int8 double))
364 (data (list -7 3.14)))
365 (equal? (parse-c-struct (make-c-struct layout data)
369 (pass-if "int8, pointer"
370 (let ((layout (list uint8 '*))
371 (data (list 222 (make-pointer 7777))))
372 (equal? (parse-c-struct (make-c-struct layout data)
376 (pass-if "unsigned-long, int8, size_t"
377 (let ((layout (list unsigned-long int8 size_t))
378 (data (list (expt 2 17) -128 (expt 2 18))))
379 (equal? (parse-c-struct (make-c-struct layout data)
383 (pass-if "long, int, pointer"
384 (let ((layout (list long int '*))
385 (data (list (- (expt 2 17)) -222 (make-pointer 777))))
386 (equal? (parse-c-struct (make-c-struct layout data)
390 (pass-if "int8, pointer, short, double"
391 (let ((layout (list int8 '* short double))
392 (data (list 77 %null-pointer -42 3.14)))
393 (equal? (parse-c-struct (make-c-struct layout data)
397 (pass-if "int8, { int8, double, int8 }, int16"
398 (let ((layout (list int8 (list int8 double int8) int16))
399 (data (list 77 (list 42 4.2 55) 88)))
400 (equal? (parse-c-struct (make-c-struct layout data)