The Tor Browser: js/src/jsapi-tests/testMappedArrayBuffer.cpp@6474c204b198 (annotated)

js/src/jsapi-tests/testMappedArrayBuffer.cpp@6474c204b198 (annotated)

js/src/jsapi-tests/testMappedArrayBuffer.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
  * vim: set ts=8 sts=4 et sw=4 tw=99:
  */
 #ifdef XP_UNIX
 #include <fcntl.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
 #include "jsfriendapi.h"
 #include "js/StructuredClone.h"
 #include "jsapi-tests/tests.h"
 #include "vm/ArrayBufferObject.h"
 const char test_data[] = "1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 const char test_filename[] = "temp-bug945152_MappedArrayBuffer";
 BEGIN_TEST(testMappedArrayBuffer_bug945152)
 {
     TempFile test_file;
     FILE *test_stream = test_file.open(test_filename);
     CHECK(fputs(test_data, test_stream) != EOF);
     test_file.close();
     // Offset 0.
     CHECK(TestCreateObject(0, 12));
     // Aligned offset.
     CHECK(TestCreateObject(8, 12));
     // Unaligned offset.
     CHECK(CreateNewObject(11, 12) == nullptr);
     // Offset + length greater than file size.
     CHECK(CreateNewObject(8, sizeof(test_data) - 7) == nullptr);
     // Release the mapped content.
     CHECK(TestReleaseContents());
     // Neuter mapped array buffer.
     CHECK(TestNeuterObject());
     // Clone mapped array buffer.
     CHECK(TestCloneObject());
     // Steal mapped array buffer contents.
     CHECK(TestStealContents());
     // Transfer mapped array buffer contents.
     CHECK(TestTransferObject());
     test_file.remove();
     return true;
 }
 JSObject *CreateNewObject(const int offset, const int length)
 {
     int fd = open(test_filename, O_RDONLY);
     void *ptr = JS_CreateMappedArrayBufferContents(fd, offset, length);
     close(fd);
     if (!ptr)
         return nullptr;
     JSObject *obj = JS_NewMappedArrayBufferWithContents(cx, length, ptr);
     if (!obj) {
         JS_ReleaseMappedArrayBufferContents(ptr, length);
         return nullptr;
     }
     return obj;
 }
 bool VerifyObject(JS::HandleObject obj, const int offset, const int length, const bool mapped)
 {
     CHECK(obj);
     CHECK(JS_IsArrayBufferObject(obj));
     CHECK_EQUAL(JS_GetArrayBufferByteLength(obj), length);
     if (mapped)
         CHECK(JS_IsMappedArrayBufferObject(obj));
     else
         CHECK(!JS_IsMappedArrayBufferObject(obj));
     const char *data = reinterpret_cast<const char *>(JS_GetArrayBufferData(obj));
     CHECK(data);
     CHECK(memcmp(data, test_data + offset, length) == 0);
     return true;
 }
 bool TestCreateObject(const int offset, const int length)
 {
     JS::RootedObject obj(cx, CreateNewObject(offset, length));
     CHECK(VerifyObject(obj, offset, length, true));
     return true;
 }
 bool TestReleaseContents()
 {
     int fd = open(test_filename, O_RDONLY);
     void *ptr = JS_CreateMappedArrayBufferContents(fd, 0, 12);
     close(fd);
     if (!ptr)
         return false;
     JS_ReleaseMappedArrayBufferContents(ptr, 12);
     return true;
 }
 bool TestNeuterObject()
 {
     JS::RootedObject obj(cx, CreateNewObject(8, 12));
     CHECK(obj);
     JS_NeuterArrayBuffer(cx, obj, ChangeData);
     CHECK(isNeutered(obj));
     return true;
 }
 bool TestCloneObject()
 {
     JS::RootedObject obj1(cx, CreateNewObject(8, 12));
     CHECK(obj1);
     JSAutoStructuredCloneBuffer cloned_buffer;
     JS::RootedValue v1(cx, OBJECT_TO_JSVAL(obj1));
     const JSStructuredCloneCallbacks *callbacks = js::GetContextStructuredCloneCallbacks(cx);
     CHECK(cloned_buffer.write(cx, v1, callbacks, nullptr));
     JS::RootedValue v2(cx);
     CHECK(cloned_buffer.read(cx, &v2, callbacks, nullptr));
     JS::RootedObject obj2(cx, JSVAL_TO_OBJECT(v2));
     CHECK(VerifyObject(obj2, 8, 12, false));
     return true;
 }
 bool TestStealContents()
 {
     JS::RootedObject obj(cx, CreateNewObject(8, 12));
     CHECK(obj);
     void *contents = JS_StealArrayBufferContents(cx, obj);
     CHECK(contents);
     CHECK(memcmp(contents, test_data + 8, 12) == 0);
     CHECK(isNeutered(obj));
     return true;
 }
 bool TestTransferObject()
 {
     JS::RootedObject obj1(cx, CreateNewObject(8, 12));
     CHECK(obj1);
     JS::RootedValue v1(cx, OBJECT_TO_JSVAL(obj1));
     // Create an Array of transferable values.
     JS::AutoValueVector argv(cx);
     argv.append(v1);
     JS::RootedObject obj(cx, JS_NewArrayObject(cx, JS::HandleValueArray::subarray(argv, 0, 1)));
     CHECK(obj);
     JS::RootedValue transferable(cx, OBJECT_TO_JSVAL(obj));
     JSAutoStructuredCloneBuffer cloned_buffer;
     const JSStructuredCloneCallbacks *callbacks = js::GetContextStructuredCloneCallbacks(cx);
     CHECK(cloned_buffer.write(cx, v1, transferable, callbacks, nullptr));
     JS::RootedValue v2(cx);
     CHECK(cloned_buffer.read(cx, &v2, callbacks, nullptr));
     JS::RootedObject obj2(cx, JSVAL_TO_OBJECT(v2));
     CHECK(VerifyObject(obj2, 8, 12, true));
     CHECK(isNeutered(obj1));
     return true;
 }
 bool isNeutered(JS::HandleObject obj)
 {
     JS::RootedValue v(cx);
     return JS_GetProperty(cx, obj, "byteLength", &v) && v.toInt32() == 0;
 }
 static void GC(JSContext *cx)
 {
     JS_GC(JS_GetRuntime(cx));
     // Trigger another to wait for background finalization to end.
     JS_GC(JS_GetRuntime(cx));
 }
 END_TEST(testMappedArrayBuffer_bug945152)
 #endif

The Tor Browser / annotate

js/src/jsapi-tests/testMappedArrayBuffer.cpp@6474c204b198 (annotated)

js/src/jsapi-tests/testMappedArrayBuffer.cpp