wasm-micro-runtime/samples/multi-module/wasm-apps/mD.cpp
liang.he 50b6474f54
Add WASI ABI compatibility check for multi-module (#913)
Refer to https://github.com/WebAssembly/WASI/blob/main/design/application-abi.md
to check the WASI ABI compatibility:
- Command (main module) may export _start function with signature "()"
- Reactor (sub module) may export _initialize function with signature "()"
- _start and _initialize can not be exported at the same time
- Reactor cannot export _start function
- Command and Reactor must export memory

And
- Rename module->is_wasi_module to module->import_wasi_api
- Refactor wasm_loader_find_export()
- Remove MULTI_MODULE related codes from mini_loader
- Update multi-module samples
- Fix a "use-after-free" issue. Since we reuse the memory instance of sub module,
   just to protect it from freeing an imported memory instance
2021-12-29 11:04:36 +08:00

75 lines
1.2 KiB
C++

#include <cstdlib>
#include <cstdio>
#include <iostream>
static void
bye_main()
{
std::cout << "mD " << __FUNCTION__ << std::endl;
}
static void
bye_setup()
{
std::cout << "mD " << __FUNCTION__ << std::endl;
}
static void
bye_func()
{
std::cout << "mD " << __FUNCTION__ << std::endl;
}
void
func3() __attribute__((__import_module__("mE"), __import_name__("func1")));
void
func4() __attribute__((__import_module__("mE"), __import_name__("func2")));
void
func1()
{
std::printf("mD %s\n", __FUNCTION__);
if (std::atexit(bye_func) != 0) {
std::perror("register an atexit handler failed");
}
func3();
}
void
func2()
{
std::printf("mD %s\n", __FUNCTION__);
func4();
}
__attribute__((constructor)) void
setup()
{
std::cout << "mD " << __FUNCTION__ << std::endl;
if (std::atexit(bye_setup) != 0) {
std::perror("register an atexit handler failed");
}
}
__attribute__((destructor)) void
teardown()
{
std::cout << "mD " << __FUNCTION__ << std::endl;
}
int
main()
{
std::printf("mD %s\n", __FUNCTION__);
if (std::atexit(bye_main) != 0) {
std::perror("register an atexit handler failed");
return EXIT_FAILURE;
}
func1();
func2();
return EXIT_SUCCESS;
}