1 files changed, 278 insertions, 0 deletions
diff --git a/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/wasm-c-api/src/global.c b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/wasm-c-api/src/global.c
new file mode 100644
index 000000000..91c8cb654
--- /dev/null
+++ b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/wasm-c-api/src/global.c
@@ -0,0 +1,278 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <inttypes.h>
+
+#include "wasm_c_api.h"
+
+#define own
+
+wasm_global_t* get_export_global(const wasm_extern_vec_t* exports, size_t i) {
+  if (exports->size <= i || !wasm_extern_as_global(exports->data[i])) {
+    printf("> Error accessing global export %zu!\n", i);
+    exit(1);
+  }
+  return wasm_extern_as_global(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]);
+}
+
+
+#define check(val, type, expected) \
+  if (val.of.type != expected) { \
+    printf("> Error reading value\n"); \
+    exit(1); \
+  }
+
+#define check_global(global, type, expected) \
+  { \
+    wasm_val_t val; \
+    wasm_global_get(global, &val); \
+    check(val, type, expected); \
+  }
+
+#define check_trap(trap)                      \
+    if (trap) {                               \
+        printf("> Error calling function\n"); \
+        wasm_trap_delete(trap);               \
+        exit(1);                              \
+    }
+
+#define check_call(func, type, expected)                           \
+    {                                                              \
+        wasm_val_t vs[1];                                          \
+        wasm_val_vec_t args = WASM_EMPTY_VEC;                      \
+        wasm_val_vec_t results = WASM_ARRAY_VEC(vs);               \
+        wasm_trap_t *trap = wasm_func_call(func, &args, &results); \
+        check_trap(trap);                                          \
+        check(vs[0], type, expected);                              \
+    }
+
+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("global.aot", "rb");
+#else
+  FILE* file = fopen("global.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);
+
+  // Create external globals.
+  printf("Creating globals...\n");
+  own wasm_globaltype_t* const_f32_type = wasm_globaltype_new(
+    wasm_valtype_new(WASM_F32), WASM_CONST);
+  own wasm_globaltype_t* const_i64_type = wasm_globaltype_new(
+    wasm_valtype_new(WASM_I64), WASM_CONST);
+  own wasm_globaltype_t* var_f32_type = wasm_globaltype_new(
+    wasm_valtype_new(WASM_F32), WASM_VAR);
+  own wasm_globaltype_t* var_i64_type = wasm_globaltype_new(
+    wasm_valtype_new(WASM_I64), WASM_VAR);
+
+  wasm_val_t val_f32_1 = WASM_F32_VAL(1);
+  own wasm_global_t* const_f32_import =
+    wasm_global_new(store, const_f32_type, &val_f32_1);
+  wasm_val_t val_i64_2 = WASM_I64_VAL(2);
+  own wasm_global_t* const_i64_import =
+    wasm_global_new(store, const_i64_type, &val_i64_2);
+  wasm_val_t val_f32_3 = WASM_F32_VAL(3);
+  own wasm_global_t* var_f32_import =
+    wasm_global_new(store, var_f32_type, &val_f32_3);
+  wasm_val_t val_i64_4 = WASM_I64_VAL(4);
+  own wasm_global_t* var_i64_import =
+    wasm_global_new(store, var_i64_type, &val_i64_4);
+
+  wasm_globaltype_delete(const_f32_type);
+  wasm_globaltype_delete(const_i64_type);
+  wasm_globaltype_delete(var_f32_type);
+  wasm_globaltype_delete(var_i64_type);
+
+  // Instantiate.
+  printf("Instantiating module...\n");
+  wasm_extern_t* externs[] = {
+    wasm_global_as_extern(const_f32_import),
+    wasm_global_as_extern(const_i64_import),
+    wasm_global_as_extern(var_f32_import),
+    wasm_global_as_extern(var_i64_import)
+  };
+  wasm_extern_vec_t imports = WASM_ARRAY_VEC(externs);
+  own wasm_instance_t* instance =
+    wasm_instance_new(store, module, &imports, NULL);
+  if (!instance) {
+    printf("> Error instantiating module!\n");
+    return 1;
+  }
+
+  wasm_module_delete(module);
+
+  // Extract export.
+  printf("Extracting exports...\n");
+  own wasm_extern_vec_t exports;
+  wasm_instance_exports(instance, &exports);
+  size_t i = 0;
+  wasm_global_t* const_f32_export = get_export_global(&exports, i++);
+  wasm_global_t* const_i64_export = get_export_global(&exports, i++);
+  wasm_global_t* var_f32_export = get_export_global(&exports, i++);
+  wasm_global_t* var_i64_export = get_export_global(&exports, i++);
+  wasm_func_t* get_const_f32_import = get_export_func(&exports, i++);
+  wasm_func_t* get_const_i64_import = get_export_func(&exports, i++);
+  wasm_func_t* get_var_f32_import = get_export_func(&exports, i++);
+  wasm_func_t* get_var_i64_import = get_export_func(&exports, i++);
+  wasm_func_t* get_const_f32_export = get_export_func(&exports, i++);
+  wasm_func_t* get_const_i64_export = get_export_func(&exports, i++);
+  wasm_func_t* get_var_f32_export = get_export_func(&exports, i++);
+  wasm_func_t* get_var_i64_export = get_export_func(&exports, i++);
+  wasm_func_t* set_var_f32_import = get_export_func(&exports, i++);
+  wasm_func_t* set_var_i64_import = get_export_func(&exports, i++);
+  wasm_func_t* set_var_f32_export = get_export_func(&exports, i++);
+  wasm_func_t* set_var_i64_export = get_export_func(&exports, i++);
+
+  // Try cloning.
+  own wasm_global_t* copy = wasm_global_copy(var_f32_import);
+  assert(wasm_global_same(var_f32_import, copy));
+  wasm_global_delete(copy);
+
+  // Interact.
+  printf("Accessing globals...\n");
+
+  // Check initial values.
+  check_global(const_f32_import, f32, 1);
+  check_global(const_i64_import, i64, 2);
+  check_global(var_f32_import, f32, 3);
+  check_global(var_i64_import, i64, 4);
+  check_global(const_f32_export, f32, 5);
+  check_global(const_i64_export, i64, 6);
+  check_global(var_f32_export, f32, 7);
+  check_global(var_i64_export, i64, 8);
+
+  check_call(get_const_f32_import, f32, 1);
+  check_call(get_const_i64_import, i64, 2);
+  check_call(get_var_f32_import, f32, 3);
+  check_call(get_var_i64_import, i64, 4);
+  check_call(get_const_f32_export, f32, 5);
+  check_call(get_const_i64_export, i64, 6);
+  check_call(get_var_f32_export, f32, 7);
+  check_call(get_var_i64_export, i64, 8);
+
+  // Modify variables through API and check again.
+  wasm_val_t val33 = WASM_F32_VAL(33);
+  wasm_global_set(var_f32_import, &val33);
+  wasm_val_t val34 = WASM_I64_VAL(34);
+  wasm_global_set(var_i64_import, &val34);
+  wasm_val_t val37 = WASM_F32_VAL(37);
+  wasm_global_set(var_f32_export, &val37);
+  wasm_val_t val38 = WASM_I64_VAL(38);
+  wasm_global_set(var_i64_export, &val38);
+
+  check_global(var_f32_import, f32, 33);
+  check_global(var_i64_import, i64, 34);
+  check_global(var_f32_export, f32, 37);
+  check_global(var_i64_export, i64, 38);
+
+  check_call(get_var_f32_import, f32, 33);
+  check_call(get_var_i64_import, i64, 34);
+  check_call(get_var_f32_export, f32, 37);
+  check_call(get_var_i64_export, i64, 38);
+
+  // Modify variables through calls and check again.
+  wasm_val_vec_t res = WASM_EMPTY_VEC;
+  wasm_val_t vs73[] = { WASM_F32_VAL(73) };
+  wasm_val_vec_t args73 = WASM_ARRAY_VEC(vs73);
+  wasm_trap_t *trap = wasm_func_call(set_var_f32_import, &args73, &res);
+  check_trap(trap);
+
+  wasm_val_t vs74[] = { WASM_I64_VAL(74) };
+  wasm_val_vec_t args74 = WASM_ARRAY_VEC(vs74);
+  trap = wasm_func_call(set_var_i64_import, &args74, &res);
+  check_trap(trap);
+
+  wasm_val_t vs77[] = { WASM_F32_VAL(77) };
+  wasm_val_vec_t args77 = WASM_ARRAY_VEC(vs77);
+  trap = wasm_func_call(set_var_f32_export, &args77, &res);
+  check_trap(trap);
+
+  wasm_val_t vs78[] = { WASM_I64_VAL(78) };
+  wasm_val_vec_t args78 = WASM_ARRAY_VEC(vs78);
+  trap = wasm_func_call(set_var_i64_export, &args78, &res);
+  check_trap(trap);
+
+  check_global(var_f32_import, f32, 73);
+  check_global(var_i64_import, i64, 74);
+  check_global(var_f32_export, f32, 77);
+  check_global(var_i64_export, i64, 78);
+
+  check_call(get_var_f32_import, f32, 73);
+  check_call(get_var_i64_import, i64, 74);
+  check_call(get_var_f32_export, f32, 77);
+  check_call(get_var_i64_export, i64, 78);
+
+  wasm_global_delete(const_f32_import);
+  wasm_global_delete(const_i64_import);
+  wasm_global_delete(var_f32_import);
+  wasm_global_delete(var_i64_import);
+  wasm_extern_vec_delete(&exports);
+  wasm_instance_delete(instance);
+
+  // Shut down.
+  printf("Shutting down...\n");
+  wasm_store_delete(store);
+  wasm_engine_delete(engine);
+
+  // All done.
+  printf("Done.\n");
+  return 0;
+}