1 files changed, 235 insertions, 0 deletions
diff --git a/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/wasm-c-api/src/memory.c b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/wasm-c-api/src/memory.c
new file mode 100644
index 000000000..737dd8501
--- /dev/null
+++ b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/wasm-c-api/src/memory.c
@@ -0,0 +1,235 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <inttypes.h>
+
+#include "wasm_c_api.h"
+
+#define own
+
+
+wasm_memory_t* get_export_memory(const wasm_extern_vec_t* exports, size_t i) {
+  if (exports->size <= i || !wasm_extern_as_memory(exports->data[i])) {
+    printf("> Error accessing memory export %zu!\n", i);
+    exit(1);
+  }
+  return wasm_extern_as_memory(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_call(wasm_func_t* func, int i, wasm_val_t args[], int32_t expected) {
+  wasm_val_t r[] = {WASM_INIT_VAL};
+  wasm_val_vec_t args_ = {i, args, i, sizeof(wasm_val_t), NULL};
+  wasm_val_vec_t results = WASM_ARRAY_VEC(r);
+  wasm_trap_t *trap = wasm_func_call(func, &args_, &results);
+  if (trap) {
+      printf("> Error on result\n");
+      wasm_trap_delete(trap);
+      exit(1);
+  }
+
+  if (r[0].of.i32 != expected) {
+      printf("> Error on result\n");
+      exit(1);
+  }
+}
+
+void check_call0(wasm_func_t* func, int32_t expected) {
+  check_call(func, 0, NULL, expected);
+}
+
+void check_call1(wasm_func_t* func, int32_t arg, int32_t expected) {
+  wasm_val_t args[] = { WASM_I32_VAL(arg) };
+  check_call(func, 1, args, expected);
+}
+
+void check_call2(wasm_func_t* func, int32_t arg1, int32_t arg2, int32_t expected) {
+  wasm_val_t args[] = { WASM_I32_VAL(arg1), WASM_I32_VAL(arg2) };
+  check_call(func, 2, args, expected);
+}
+
+void check_ok(wasm_func_t* func, int i, wasm_val_t args[]) {
+  wasm_val_vec_t args_ = {i, args, i, sizeof(wasm_val_t), NULL};
+  wasm_val_vec_t results = WASM_EMPTY_VEC;
+  wasm_trap_t *trap = wasm_func_call(func, &args_, &results);
+  if (trap) {
+      printf("> Error on result, expected empty\n");
+      wasm_trap_delete(trap);
+      exit(1);
+  }
+}
+
+void check_ok2(wasm_func_t* func, int32_t arg1, int32_t arg2) {
+  wasm_val_t args[] = { WASM_I32_VAL(arg1), WASM_I32_VAL(arg2) };
+  check_ok(func, 2, args);
+}
+
+void check_trap(wasm_func_t* func, int i, wasm_val_t args[]) {
+  wasm_val_t r[] = {WASM_INIT_VAL};
+  wasm_val_vec_t args_ = {i, args, i, sizeof(wasm_val_t), NULL};
+  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);
+}
+
+void check_trap1(wasm_func_t* func, int32_t arg) {
+  wasm_val_t args[] = { WASM_I32_VAL(arg) };
+  check_trap(func, 1, args);
+}
+
+void check_trap2(wasm_func_t* func, int32_t arg1, int32_t arg2) {
+  wasm_val_t args[] = { WASM_I32_VAL(arg1), WASM_I32_VAL(arg2) };
+  check_trap(func, 2, args);
+}
+
+
+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("memory.aot", "rb");
+#else
+  FILE* file = fopen("memory.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_with_args(
+      store, module, &imports, NULL, KILOBYTE(32), 0);
+  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_memory_t* memory = get_export_memory(&exports, i++);
+  wasm_func_t* size_func = get_export_func(&exports, i++);
+  wasm_func_t* load_func = get_export_func(&exports, i++);
+  wasm_func_t* store_func = get_export_func(&exports, i++);
+
+  wasm_module_delete(module);
+
+  // Try cloning.
+  own wasm_memory_t* copy = wasm_memory_copy(memory);
+  assert(wasm_memory_same(memory, copy));
+  wasm_memory_delete(copy);
+
+  // Check initial memory.
+  printf("Checking memory...\n");
+  check(wasm_memory_size(memory) == 2);
+  check(wasm_memory_data_size(memory) == 0x20000);
+  check(wasm_memory_data(memory)[0] == 0);
+  check(wasm_memory_data(memory)[0x1000] == 1);
+  check(wasm_memory_data(memory)[0x1003] == 4);
+
+  check_call0(size_func, 2);
+  check_call1(load_func, 0, 0);
+  check_call1(load_func, 0x1000, 1);
+  check_call1(load_func, 0x1003, 4);
+  check_call1(load_func, 0x1ffff, 0);
+  check_trap1(load_func, 0x20000);
+
+  // Mutate memory.
+  printf("Mutating memory...\n");
+  wasm_memory_data(memory)[0x1003] = 5;
+  check_ok2(store_func, 0x1002, 6);
+  check_trap2(store_func, 0x20000, 0);
+
+  check(wasm_memory_data(memory)[0x1002] == 6);
+  check(wasm_memory_data(memory)[0x1003] == 5);
+  check_call1(load_func, 0x1002, 6);
+  check_call1(load_func, 0x1003, 5);
+
+  // Grow memory.
+  // DO NOT SUPPORT
+  printf("Bypass Growing memory...\n");
+  wasm_extern_vec_delete(&exports);
+  wasm_instance_delete(instance);
+
+  // Create stand-alone memory.
+  // DO NOT SUPPORT
+  // TODO(wasm+): Once Wasm allows multiple memories, turn this into import.
+  printf("Bypass Creating stand-alone memory...\n");
+
+  // Shut down.
+  printf("Shutting down...\n");
+  wasm_store_delete(store);
+  wasm_engine_delete(engine);
+
+  // All done.
+  printf("Done.\n");
+  return 0;
+}