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iwasm: call native lib init/deinit if exists (#2439)

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YAMAMOTO Takashi 2023-08-10 10:26:52 +09:00 committed by GitHub
parent 490fa2ddac
commit a550f4d9f7
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 36 additions and 1 deletions
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20
product-mini/platforms/posix/main.c
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@ -284,6 +284,8 @@ validate_env_str(char *env)
#if BH_HAS_DLFCN
typedef uint32 (*get_native_lib_func)(char **p_module_name,
NativeSymbol **p_native_symbols);
typedef int (*init_native_lib_func)(void);
typedef void (*deinit_native_lib_func)(void);
static uint32
load_and_register_native_libs(const char **native_lib_list,
@ -304,6 +306,18 @@ load_and_register_native_libs(const char **native_lib_list,
continue;
}
init_native_lib_func init_native_lib = dlsym(handle, "init_native_lib");
if (init_native_lib) {
int ret = init_native_lib();
if (ret != 0) {
LOG_WARNING("warning: `init_native_lib` function from native "
"lib %s failed with %d",
native_lib_list[i], ret);
dlclose(handle);
continue;
}
}
/* lookup get_native_lib func */
get_native_lib_func get_native_lib = dlsym(handle, "get_native_lib");
if (!get_native_lib) {
@ -368,6 +382,12 @@ unregister_and_unload_native_libs(uint32 native_lib_count,
continue;
}
deinit_native_lib_func deinit_native_lib =
dlsym(handle, "deinit_native_lib");
if (deinit_native_lib) {
deinit_native_lib();
}
dlclose(handle);
}
}

4
samples/native-lib/README.md
View File

@ -62,6 +62,7 @@ cd build
The output is:
```bash
init_native_lib in test_hello2.c called
Hello World!
10 + 20 = 30
sqrt(10, 20) = 500
@ -72,5 +73,6 @@ 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.
Message from test_hello2: Hello, main. This is test_hello2_wrapper! Your wasm_module_inst_t is 0x7fe0e6804280.
deinit_native_lib in test_hello2.c called
```

13
samples/native-lib/test_hello2.c
View File

@ -57,3 +57,16 @@ get_native_lib(char **p_module_name, NativeSymbol **p_native_symbols)
*p_native_symbols = native_symbols;
return sizeof(native_symbols) / sizeof(NativeSymbol);
}
int
init_native_lib()
{
printf("%s in test_hello2.c called\n", __func__);
return 0;
}
void
deinit_native_lib()
{
printf("%s in test_hello2.c called\n", __func__);
}