# wasm-c-api introduction

All samples come from the commit 340fd9528cc3b26d22fe30ee1628c8c3f2b8c53b
of [wasm-c-api](https://github.com/WebAssembly/wasm-c-api).

Developer can learn these *APIs* from
[wasm.h](https://github.com/WebAssembly/wasm-c-api/blob/master/include/wasm.h).

And here are [examples](https://github.com/WebAssembly/wasm-c-api/tree/master/example) which
are helpful.

Currently WAMR supports most of the APIs, the unsupported APIs are listed as below:

- References

``` c
WASM_API_EXTERN own wasm_shared_##name##_t* wasm_##name##_share(const wasm_##name##_t*);
WASM_API_EXTERN own wasm_##name##_t* wasm_##name##_obtain(wasm_store_t*, const wasm_shared_##name##_t*);
```

- Several Module APIs

``` c
WASM_API_EXTERN void wasm_module_serialize(const wasm_module_t*, own wasm_byte_vec_t* out);
WASM_API_EXTERN own wasm_module_t* wasm_module_deserialize(wasm_store_t*, const wasm_byte_vec_t*);
```

Currently growing a table or memory by wasm opcode is supported and it is not supported to grow them
by host-side function callings.

- Table Grow APIs

``` c
WASM_API_EXTERN bool wasm_table_grow(wasm_table_t*, wasm_table_size_t delta, wasm_ref_t* init);
```

- Memory Grow APIs

``` c
WASM_API_EXTERN bool wasm_memory_grow(wasm_memory_t*, wasm_memory_pages_t delta);
```