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samples/native-lib: Add a bit more complicated example (#1643)

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Add test_hello sample and update the document
This commit is contained in:
YAMAMOTO Takashi
2022-10-27 16:06:14 +09:00
committed by GitHub
parent 264fdfafed
commit bc58778c34
4 changed files with 56 additions and 2 deletions
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15
samples/native-lib/wasm-app/main.c
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@ -12,9 +12,15 @@ test_add(int x, int y);
int
test_sqrt(int x, int y);
int
test_hello(const char *name, char *buf, size_t buflen);
int
main(int argc, char **argv)
{
const char *name = __func__;
char *buf;
size_t buflen;
int x = 10, y = 20, res;
printf("Hello World!\n");
@ -25,5 +31,14 @@ main(int argc, char **argv)
res = test_sqrt(x, y);
printf("sqrt(%d, %d) = %d\n", x, y, res);
res = test_hello(name, NULL, 0);
printf("test_hello(\"%s\", %p, %zu) = %d\n", name, NULL, (size_t)0, res);
buflen = res + 1;
buf = malloc(buflen);
printf("malloc(%zu) = %p\n", buflen, buf);
res = test_hello(__func__, buf, buflen);
printf("test_hello(\"%s\", %p, %zu) = %d\n", name, buf, buflen, res);
printf("Message from test_hello: %s", buf);
return 0;
}