Fork of the Android NDK crazy linker.

third_party/android_crazy_linker/src/tests/test_load_library_callbacks.cpp

+// Copyright (c) 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// A crazy linker test to test callbacks for delayed execution.
+
+#include <stdio.h>
+#include <crazy_linker.h>
+
+#include "test_util.h"
+
+typedef void (*FunctionPtr)();
+
+namespace {
+
+bool PostCallback(crazy_callback_t* callback, void* poster_opaque) {
+  printf("Post callback, poster_opaque %p, handler %p, opaque %p\n",
+         poster_opaque,
+         callback->handler,
+         callback->opaque);
+
+  // Copy callback to the address given in poster_opaque.
+  crazy_callback_t* request =
+      reinterpret_cast<crazy_callback_t*>(poster_opaque);
+  *request = *callback;
+
+  return true;
+}
+
+void CheckAndRunCallback(crazy_callback_t* callback) {
+  printf("Run callback, handler %p, opaque %p\n",
+         callback->handler,
+         callback->opaque);
+
+  if (!callback->handler) {
+    Panic("Post for delayed execution not invoked\n");
+  }
+
+  // Run the callback, then clear it for re-use.
+  crazy_callback_run(callback);
+  memset(callback, 0, sizeof(*callback));
+}
+
+}  // namespace
+
+int main() {
+  crazy_context_t* context = crazy_context_create();
+  crazy_library_t* library;
+
+  // DEBUG
+  crazy_context_set_load_address(context, 0x20000000);
+
+  // Create a new callback, initialized to NULLs.
+  crazy_callback_t callback = {NULL, NULL};
+
+  // Set a callback poster that copies its callback to &callback.
+  crazy_context_set_callback_poster(context, &PostCallback, &callback);
+
+  crazy_callback_poster_t poster;
+  void* poster_opaque;
+
+  // Check that the API returns the values we set.
+  crazy_context_get_callback_poster(context, &poster, &poster_opaque);
+  if (poster != &PostCallback || poster_opaque != &callback) {
+    Panic("Get callback poster error\n");
+  }
+
+  // Load libfoo.so.
+  if (!crazy_library_open(&library, "libfoo.so", context)) {
+    Panic("Could not open library: %s\n", crazy_context_get_error(context));
+  }
+  CheckAndRunCallback(&callback);
+
+  // Find the "Foo" symbol.
+  FunctionPtr foo_func;
+  if (!crazy_library_find_symbol(
+           library, "Foo", reinterpret_cast<void**>(&foo_func))) {
+    Panic("Could not find 'Foo' in libfoo.so\n");
+  }
+
+  // Call it.
+  (*foo_func)();
+
+  // Close the library.
+  crazy_library_close_with_context(library, context);
+  CheckAndRunCallback(&callback);
+
+  crazy_context_destroy(context);
+
+  return 0;
+}