StoreObjectFieldNoWriteBarrier(buffer, JSArrayBuffer::kByteLengthOffset, byte_length); // 设置 buffer 为 nullptr StoreJSArrayBufferBackingStore(buffer, EncodeExternalPointer(ReinterpretCast<RawPtrT>(IntPtrConstant(0))); StoreObjectFieldNoWriteBarrier(buffer, JSArrayBuffer::kExtensionOffset, IntPtrConstant(0)...
_buffers[i] = nullptr; } }std::free(_buffers); _buffers = nullptr; }voidBoundedBuffer::Produce(std::function<void(void*)> func){std::unique_lock<std::mutex>buffers_lock(_buffers_mtx);// 等待可写 slot。要确保本次写入后,下次有写入位置,所以 +1。_buffers_not_full_cond.wait(buffers_l...
该类型下,recv_no_ibuf_operations为false(没有进行crash recovery),并且目标页面不是ibuf的层次结构中的2层或者3层页面(ibuf_page函数范围false),则返回nullptr。 如果page_size是压缩页面,而请求的是非压缩页面,并且没有进行crash recovery时,将block设置为nullptr。否则使用buf_LRU_get_free_block获取一个free_blo...
data(), -1, // We are certain that `data` is sufficiently large nullptr, String::NO_NULL_TERMINATION | String::REPLACE_INVALID_UTF8); // 基于上面申请的 buf 内存新建一个 Uint8Array auto array = Uint8Array::New(buf.ToArrayBuffer(), 0, length); args.GetReturnValue().Set(array);} ...
uboLayoutBinding.pImmutableSamplers = nullptr;//Optional ThepImmutableSamplersfield is only relevant for image sampling related descriptors, which we'll look at later. You can leave this to its default value. pImmutableSamplers字段只与image采样相关的描述符有关,我们以后再说。让它保持默认值就好。
void BufferQueue::createBufferQueue(sp<IGraphicBufferProducer>* outProducer, sp<IGraphicBufferConsumer>* outConsumer, bool consumerIsSurfaceFlinger) { LOG_ALWAYS_FATAL_IF(outProducer == nullptr, "BufferQueue: outProducer must not be NULL"); LOG_ALWAYS_FATAL_IF(outConsumer == nullptr, "BufferQueue:...
if (dest == nullptr || src == nullptr) return; std::strncpy(dest, src, dest_size - 1); dest[dest_size - 1] = '\0'; // 确保字符串以空字符结尾 } int main() { char buffer[10]; const char* data = "This is a very long string that will cause buffer overflow if not handled...
BeginCommand(const RenderPass* renderPass = nullptr, const FrameBuffer* frameBuffer = nullptr) = 0 开始执行渲染指令。 virtual void EndCommand() = 0 渲染指令执行结束。 virtual void BindViewport(const Viewport& viewport) = 0 视口绑定。 virtual void BindScissorRect(s32 x, s32 y, u32 width, ...
if (listener != nullptr) { listener->onBufferReleased(); //调用Producer的onBufferReleased回调通知Producer完成释放。 } return NO_ERROR; } 3.BufferQueueProducer关键流程分析 (1). dequeuebuffer的流程 dequeuebuffer是生产者端从BufferQueueCore上获取一个GraphicBuffer进行生产的过程,生产者BufferQueueProducer 会...
(device, &bufferInfo, nullptr, &buffer) !=VK_SUCCESS) {9throwstd::runtime_error("failed to create buffer!");10}1112VkMemoryRequirements memRequirements;13vkGetBufferMemoryRequirements(device, buffer, &memRequirements);1415VkMemoryAllocateInfo allocInfo ={};16allocInfo.sType =VK_STRUCTURE_TYPE_...