1 files changed, 218 insertions, 0 deletions
diff --git a/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/wasm-c-api/src/table.c b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/wasm-c-api/src/table.c
new file mode 100644
index 000000000..c4a7da8bc
--- /dev/null
+++ b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/wasm-c-api/src/table.c
@@ -0,0 +1,218 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <inttypes.h>
+
+#include "wasm_c_api.h"
+
+#define own
+
+// A function to be called from Wasm code.
+own wasm_trap_t* neg_callback(
+  const wasm_val_vec_t* args, wasm_val_vec_t* results
+) {
+  printf("Calling back...\n");
+  results->data[0].kind = WASM_I32;
+  results->data[0].of.i32 = -args->data[0].of.i32;
+  return NULL;
+}
+
+
+wasm_table_t* get_export_table(const wasm_extern_vec_t* exports, size_t i) {
+  if (exports->size <= i || !wasm_extern_as_table(exports->data[i])) {
+    printf("> Error accessing table export %zu!\n", i);
+    exit(1);
+  }
+  return wasm_extern_as_table(exports->data[i]);
+}
+
+wasm_func_t* get_export_func(const wasm_extern_vec_t* exports, size_t i) {
+  if (exports->size <= i || !wasm_extern_as_func(exports->data[i])) {
+    printf("> Error accessing function export %zu!\n", i);
+    exit(1);
+  }
+  return wasm_extern_as_func(exports->data[i]);
+}
+
+
+void check(bool success) {
+  if (!success) {
+    printf("> Error, expected success\n");
+    exit(1);
+  }
+}
+
+void check_table(wasm_table_t* table, int32_t i, bool expect_set) {
+  own wasm_ref_t* ref = wasm_table_get(table, i);
+  check((ref != NULL) == expect_set);
+  if (ref) wasm_ref_delete(ref);
+}
+
+void check_call(wasm_func_t* func, int32_t arg1, int32_t arg2, int32_t expected) {
+  wasm_val_t vs[2] = { WASM_I32_VAL(arg1), WASM_I32_VAL(arg2) };
+  wasm_val_t r[1] = { WASM_INIT_VAL };
+  wasm_val_vec_t args = WASM_ARRAY_VEC(vs);
+  wasm_val_vec_t results = WASM_ARRAY_VEC(r);
+  wasm_trap_t *trap = wasm_func_call(func, &args, &results);
+  if (trap) {
+      printf("> Error on calling\n");
+      wasm_trap_delete(trap);
+      exit(1);
+  }
+
+  if (r[0].of.i32 != expected) {
+      printf("> Error on result\n");
+      exit(1);
+  }
+}
+
+void check_trap(wasm_func_t* func, int32_t arg1, int32_t arg2) {
+  wasm_val_t vs[2] = { WASM_I32_VAL(arg1), WASM_I32_VAL(arg2) };
+  wasm_val_t r[1] = { WASM_INIT_VAL };
+  wasm_val_vec_t args = WASM_ARRAY_VEC(vs);
+  wasm_val_vec_t results = WASM_ARRAY_VEC(r);
+  own wasm_trap_t* trap = wasm_func_call(func, &args, &results);
+  if (! trap) {
+    printf("> Error on result, expected trap\n");
+    exit(1);
+  }
+  wasm_trap_delete(trap);
+}
+
+
+int main(int argc, const char* argv[]) {
+  // Initialize.
+  printf("Initializing...\n");
+  wasm_engine_t* engine = wasm_engine_new();
+  wasm_store_t* store = wasm_store_new(engine);
+
+  // Load binary.
+  printf("Loading binary...\n");
+#if WASM_ENABLE_AOT != 0 && WASM_ENABLE_INTERP == 0
+  FILE* file = fopen("table.aot", "rb");
+#else
+  FILE* file = fopen("table.wasm", "rb");
+#endif
+  if (!file) {
+    printf("> Error loading module!\n");
+    return 1;
+  }
+
+  int ret = fseek(file, 0L, SEEK_END);
+  if (ret == -1) {
+    printf("> Error loading module!\n");
+    fclose(file);
+    return 1;
+  }
+
+  long file_size = ftell(file);
+  if (file_size == -1) {
+    printf("> Error loading module!\n");
+    fclose(file);
+    return 1;
+  }
+
+  ret = fseek(file, 0L, SEEK_SET);
+  if (ret == -1) {
+    printf("> Error loading module!\n");
+    fclose(file);
+    return 1;
+  }
+
+  wasm_byte_vec_t binary;
+  wasm_byte_vec_new_uninitialized(&binary, file_size);
+  if (fread(binary.data, file_size, 1, file) != 1) {
+    printf("> Error loading module!\n");
+    fclose(file);
+    return 1;
+  }
+  fclose(file);
+
+  // Compile.
+  printf("Compiling module...\n");
+  own wasm_module_t* module = wasm_module_new(store, &binary);
+  if (!module) {
+    printf("> Error compiling module!\n");
+    return 1;
+  }
+
+  wasm_byte_vec_delete(&binary);
+
+  // Instantiate.
+  printf("Instantiating module...\n");
+  wasm_extern_vec_t imports = WASM_EMPTY_VEC;
+  own wasm_instance_t* instance =
+    wasm_instance_new(store, module, &imports, NULL);
+  if (!instance) {
+    printf("> Error instantiating module!\n");
+    return 1;
+  }
+
+  // Extract export.
+  printf("Extracting exports...\n");
+  own wasm_extern_vec_t exports;
+  wasm_instance_exports(instance, &exports);
+  size_t i = 0;
+  wasm_table_t* table = get_export_table(&exports, i++);
+  wasm_func_t* call_indirect = get_export_func(&exports, i++);
+  wasm_func_t* f = get_export_func(&exports, i++);
+  wasm_func_t* g = get_export_func(&exports, i++);
+
+  wasm_module_delete(module);
+
+  // Create external function.
+  printf("Creating callback...\n");
+  own wasm_functype_t* neg_type = wasm_functype_new_1_1(wasm_valtype_new_i32(), wasm_valtype_new_i32());
+  own wasm_func_t* h = wasm_func_new(store, neg_type, neg_callback);
+
+  wasm_functype_delete(neg_type);
+
+  // Try cloning.
+  own wasm_table_t* copy = wasm_table_copy(table);
+  assert(wasm_table_same(table, copy));
+  wasm_table_delete(copy);
+
+  // Check initial table.
+  printf("Checking table...\n");
+  check(wasm_table_size(table) == 2);
+  check_table(table, 0, false);
+  check_table(table, 1, true);
+  check_trap(call_indirect, 0, 0);
+  check_call(call_indirect, 7, 1, 7);
+  check_trap(call_indirect, 0, 2);
+
+  // Mutate table.
+  printf("Mutating table...\n");
+  check(wasm_table_set(table, 0, wasm_func_as_ref(g)));
+  check(wasm_table_set(table, 1, NULL));
+  wasm_ref_t *ref_f = wasm_func_as_ref(f);
+  check(! wasm_table_set(table, 2, ref_f));
+  wasm_ref_delete(ref_f);
+  check_table(table, 0, true);
+  check_table(table, 1, false);
+  check_call(call_indirect, 7, 0, 666);
+  check_trap(call_indirect, 0, 1);
+  check_trap(call_indirect, 0, 2);
+
+  // Grow table.
+  // DO NOT SUPPORT
+  printf("Bypass Growing table...\n");
+
+  wasm_func_delete(h);
+  wasm_extern_vec_delete(&exports);
+  wasm_instance_delete(instance);
+
+  // Create stand-alone table.
+  // DO NOT SUPPORT
+  // TODO(wasm+): Once Wasm allows multiple tables, turn this into import.
+  printf("Bypass Creating stand-alone table...\n");
+
+  // Shut down.
+  printf("Shutting down...\n");
+  wasm_store_delete(store);
+  wasm_engine_delete(engine);
+
+  // All done.
+  printf("Done.\n");
+  return 0;
+}