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Add trampoline-related functions to C API.

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This commit is contained in:
losfair
2019-06-03 21:59:33 +08:00
committed by Syrus
parent 7808c68cb2
commit d70cb9695e
5 changed files with 134 additions and 1 deletions
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25
lib/runtime-c-api/tests/test-import-function.c
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@ -14,8 +14,15 @@ typedef struct {
int value;
} context_data;
struct print_str_context {
int call_count;
};
void print_str(wasmer_instance_context_t *ctx, int32_t ptr, int32_t len)
{
struct print_str_context *local_context = wasmer_trampoline_get_context();
local_context->call_count++;
const wasmer_memory_t *memory = wasmer_instance_context_memory(ctx, 0);
uint32_t mem_len = wasmer_memory_length(memory);
uint8_t *mem_bytes = wasmer_memory_data(memory);
@ -36,9 +43,22 @@ int main()
{
wasmer_value_tag params_sig[] = {WASM_I32, WASM_I32};
wasmer_value_tag returns_sig[] = {};
struct print_str_context local_context = {
.call_count = 0
};
printf("Creating trampoline buffer\n");
wasmer_trampoline_buffer_builder_t *tbb = wasmer_trampoline_buffer_builder_new();
unsigned long print_str_idx = wasmer_trampoline_buffer_builder_add_function(
tbb,
(wasmer_trampoline_callable_t *) print_str,
(void *) &local_context
);
wasmer_trampoline_buffer_t *tb = wasmer_trampoline_buffer_builder_build(tbb);
const wasmer_trampoline_callable_t *print_str_callable = wasmer_trampoline_buffer_get_trampoline(tb, print_str_idx);
printf("Creating new func\n");
wasmer_import_func_t *func = wasmer_import_func_new((void (*)(void *)) print_str, params_sig, 2, returns_sig, 0);
wasmer_import_func_t *func = wasmer_import_func_new((void (*)(void *)) print_str_callable, params_sig, 2, returns_sig, 0);
wasmer_import_t import;
char *module_name = "env";
@ -95,7 +115,10 @@ int main()
assert(ptr_len == 13);
assert(0 == strcmp(actual_str, "Hello, World!"));
assert(context_data_value == actual_context_data_value);
assert(local_context.call_count == 1);
printf("Destroying trampoline buffer\n");
wasmer_trampoline_buffer_destroy(tb);
printf("Destroying func\n");
wasmer_import_func_destroy(func);
printf("Destroy instance\n");