ACE_InputCDR的数据对齐问题
测试程序如下#include <ace/ACE.h>
#include <ace/CDR_Stream.h>
#include <ace/Message_Block.h>
#include <ace/Log_Msg.h>
#include <ace/OS.h>
#pragma pack(1)
typedef struct tagMsgHeader
{
unsigned int startFlag;
unsigned short bodyLength;
unsigned int messageSequence;
unsigned char messageCmdCode;
}MsgHeader;
#pragma pack()
int ACE_TMAIN(int, ACE_TCHAR *[])
{
MsgHeader h;
memset(&h, 0, sizeof(MsgHeader));
h.startFlag = 0xdbdbdbdb;
h.bodyLength = 0xeeff;
h.messageSequence = 0xadcdef;
h.messageCmdCode = 0x08;
int hlen = sizeof(h);
int slen = sizeof(MsgHeader);
ACE_InputCDR cdr((const char *)&h, sizeof(h));
ACE_CDR::ULong startFlag;
ACE_CDR::Short bodyLength;
ACE_CDR::ULong messageSequence;
ACE_CDR::Char messageCmdCode;
cdr >> startFlag;
cdr >> bodyLength;
cdr >> messageSequence;
cdr >> messageCmdCode;
MsgHeader h2;
h2.startFlag = startFlag;
h2.bodyLength = bodyLength;
h2.messageCmdCode = messageCmdCode;
h2.messageSequence = messageSequence;
return 0;
}
调试时
cdr >> messageSequence;
出现问题，得不到正确的结果0xadcdef，而是无效的0xcccccccc，跟踪进去，发电 good_bit()返回值为false，而
h2.messageSequence = messageSequence;
却得到了messageCmdCode的首字节0xef,这是怎么回事？是不是在字节对齐方面ACE_InputCdr需要做特殊的处理？ :),在编译ACE时在config.h中加上‘#define ACE_LACKS_CDR_ALIGNMENT’
页:
[1]