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samples/native-lib: Add an example to use wamr API from native lib (#1649)

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Real world native libs likely need to access the wasm_runtime_xxx API.
This example demonstrates it.

Build vmlib as a shared lib to make it straightforward to share a
single runtime instance between iwasm and native libs.
This commit is contained in:
YAMAMOTO Takashi
2022-10-28 20:31:21 +09:00
committed by GitHub
parent 84161fe084
commit 960b613d10
4 changed files with 100 additions and 5 deletions
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12
samples/native-lib/README.md
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@ -49,14 +49,14 @@ will be generated.
```bash
cd build
./iwasm --native-lib=./libtest_add.so --native-lib=./libtest_sqrt.so --native-lib=./libtest_hello.so wasm-app/test.wasm
./iwasm --native-lib=./libtest_add.so --native-lib=./libtest_sqrt.so --native-lib=./libtest_hello.so --native-lib=./libtest_hello2.so wasm-app/test.wasm
```
### macOS
```bash
cd build
./iwasm --native-lib=libtest_add.dylib --native-lib=libtest_sqrt.dylib --native-lib=libtest_hello.dylib wasm-app/test.wasm
./iwasm --native-lib=libtest_add.dylib --native-lib=libtest_sqrt.dylib --native-lib=libtest_hello.dylib --native-lib=libtest_hello2.dylib wasm-app/test.wasm
```
The output is:
@ -66,7 +66,11 @@ Hello World!
10 + 20 = 30
sqrt(10, 20) = 500
test_hello("main", 0x0, 0) = 41
malloc(42) = 0x24b8
test_hello("main", 0x24b8, 42) = 41
malloc(42) = 0x24e8
test_hello("main", 0x24e8, 42) = 41
Message from test_hello: Hello, main. This is test_hello_wrapper!
test_hello2("main", 0x0, 0) = 85
malloc(86) = 0x24e8
test_hello2("main", 0x24e8, 86) = 85
Message from test_hello2: Hello, main. This is test_hello2_wrapper! Your wasm_module_inst_t is 0x7fd443704990.
```