mirror of
https://github.com/bytecodealliance/wasm-micro-runtime.git
synced 2024-10-16 13:02:32 +00:00
6c846acc59
Introduce module instance context APIs which can set one or more contexts created
by the embedder for a wasm module instance:
```C
wasm_runtime_create_context_key
wasm_runtime_destroy_context_key
wasm_runtime_set_context
wasm_runtime_set_context_spread
wasm_runtime_get_context
```
And make libc-wasi use it and set wasi context as the first context bound to the wasm
module instance.
Also add samples.
Refer to https://github.com/bytecodealliance/wasm-micro-runtime/issues/2460.
66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
/*
|
|
* Copyright (C) 2023 Midokura Japan KK. All rights reserved.
|
|
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include <pthread.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
|
|
void
|
|
set_context(int32_t n) __attribute__((import_module("env")))
|
|
__attribute__((import_name("set_context")));
|
|
|
|
int32_t
|
|
get_context() __attribute__((import_module("env")))
|
|
__attribute__((import_name("get_context")));
|
|
|
|
void *
|
|
start(void *vp)
|
|
{
|
|
int32_t v;
|
|
|
|
printf("thread started\n");
|
|
|
|
printf("confirming the initial state on thread\n");
|
|
v = get_context();
|
|
assert(v == -1);
|
|
|
|
printf("setting the context on thread\n");
|
|
set_context(1234);
|
|
|
|
printf("confirming the context on thread\n");
|
|
v = get_context();
|
|
assert(v == 1234);
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
main()
|
|
{
|
|
pthread_t t1;
|
|
int32_t v;
|
|
int ret;
|
|
|
|
printf("confirming the initial state on main\n");
|
|
v = get_context();
|
|
assert(v == -1);
|
|
|
|
printf("creating a thread\n");
|
|
ret = pthread_create(&t1, NULL, start, NULL);
|
|
assert(ret == 0);
|
|
void *val;
|
|
ret = pthread_join(t1, &val);
|
|
assert(ret == 0);
|
|
printf("joined the thread\n");
|
|
|
|
printf("confirming the context propagated from the thread on main\n");
|
|
v = get_context();
|
|
assert(v == 1234);
|
|
|
|
printf("success\n");
|
|
return 0;
|
|
}
|