(why to submit this PR) serial_v2驱动框架,rt_serial_tx_enable()函数,在 DMA阻塞发送(RT_DEVICE_FLAG_DMA_TX and RT_SERIAL_TX_BLOCKING) 的时候,使用rt_malloc分配了tx_fifo内存,但是并未对tx_fifo->rb.buffer_ptr指针进行初始化(rt_malloc不会自动初始
HW buffer的硬件逻辑指针(hw_ptr)主要由snd_pcm_update_hw_ptr0函数跟新。 1 DMA传输完成一个period_size之后通过在中断函数里snd_pcm_period_elapsed调用snd_pcm_update_hw_ptr0跟新。 2 数据读/写/重置(snd_pcm_lib_read1/snd_pcm_lib_write1/snd_pcm_lib_ioctl_reset)时通过snd_pcm_update_hw_ptr调...
同时自己把双buffer的存储对象声明成了std::shared_ptr<type>类型。上线后,当数据更新后,会导致crash。core文件发现是踩内存 双buffer的代码如下: template<typenameType>classDoubleBuf{TypeGet(){intidx=ver.load(std::memory_order_acquire);returnbuffer[idx];}// 这里主要考虑到有些场景下,词典占用内存很大,...
GraphicsBuffer.GetNativeBufferPtr public IntPtr GetNativeBufferPtr (); 返回 IntPtr 指向底层图形 API 缓冲区的指针。 描述 获取指向该缓冲区的原生(底层图形 API)指针。 使用此函数可获取与图形缓冲区/对应的指针句柄,因为它以原生图形 API 表示。这可用于通过原生代码插件 启用图形缓冲区数据操作。注意:使...
public IntPtrGetNativeBufferPtr(); 戻り値 IntPtrPointer to the underlying graphics API buffer. 説明 Retrieve a native (underlying graphics API) pointer to the buffer. Use this function to retrieve a pointer/handle corresponding to the compute buffer, as it is represented in the native graphics...
protected Buffer (IntPtr javaReference, Android.Runtime.JniHandleOwnership transfer); Parameters javaReference IntPtr A IntPtrcontaining a Java Native Interface (JNI) object reference. transfer JniHandleOwnership A JniHandleOwnershipindicating how to handle javaReference Remarks Portions of this page ...
Releases an AudioQueue buffer. C# 复制 public void FreeBuffer(IntPtr audioQueueBuffer); Parameters audioQueueBuffer IntPtr AudioQueue buffer previously allocated with AllocateBuffer. Applies to 产品版本 Xamarin.Mac SDK 14 本文内容 Definition Applies to ...
Reason for revert: Crash in android, see crbug.com/389957875 Original change's description: > [Code Health] Replace raw pointer Buffer::data_ with raw_ptr > > Bug: 346694189 > Change-Id: I67f9f686d206e52916e7f674b21837043d09545f > Reviewed-on: https://chromium-review.googlesource.com...
百度试题 题目buffer指向一个字符串缓冲区,bufsize是一个符号常量,指令“mov dword ptr buffer+bufsize-13, ebx”的目的操作数的寻址方式是: A.立即数寻址B.寄存器寻址C.直接寻址D.间接寻址相关知识点: 试题来源: 解析 C 反馈 收藏
public static IntPtr GetDirectBufferAddress(IntPtr buf); Parameters buf IntPtr Returns IntPtr Remarks Portions of this page are modifications based on work created and shared by theAndroid Open Source Projectand used according to terms described in theCreative Commons 2.5 Attribution License. ...