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https://github.com/bytecodealliance/wasm-micro-runtime.git
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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.
33 lines
857 B
C
33 lines
857 B
C
/*
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* Copyright (C) 2023 Midokura Japan KK. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include <stddef.h>
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#include <stdio.h>
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#include "wasm_export.h"
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#include "my_context.h"
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void
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set_context(wasm_exec_env_t exec_env, int32_t n)
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{
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wasm_module_inst_t inst = wasm_runtime_get_module_inst(exec_env);
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printf("%s called on module inst %p\n", __func__, inst);
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struct my_context *ctx = &my_context;
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ctx->x = n;
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wasm_runtime_set_context_spread(inst, my_context_key, ctx);
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}
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int32_t
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get_context(wasm_exec_env_t exec_env)
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{
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wasm_module_inst_t inst = wasm_runtime_get_module_inst(exec_env);
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printf("%s called on module inst %p\n", __func__, inst);
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struct my_context *ctx = wasm_runtime_get_context(inst, my_context_key);
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if (ctx == NULL) {
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return -1;
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}
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return ctx->x;
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}
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