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// NewProcess.cpp : 定义控制台应用程序的入口点。//#include "stdafx.h"#include <iostream>#include <stdarg.h>using
namespace std;typedef
unsigned int(*_do_sth)();typedef
void(*_fail_call)(unsigned int);typedef
void(*_success_call)(unsigned int);unsigned int
gResult = 0;void
_process_start();void
_transation_start();void
_fail_rollback(_success_call a, _fail_call b, unsigned int
result);void
_fail_rollback_call(unsigned int
result);void
_success_submit_call(unsigned int
result);void
_transation_end(void(*_fail_rollback)(_success_call, _fail_call, unsigned int), _success_call a, _fail_call b, unsigned int
result);void
_sequence(_do_sth a, ...);unsigned int
_do_A();unsigned int
_do_B();#define _RESULTBITMAP gResult#define __process_start _process_start();#define __fail_rollback _fail_rollback#define __transation_start _transation_start();#define __transation_end(submitcall,rollbackcall) _transation_end(__fail_rollback,##submitcall,##rollbackcall,_RESULTBITMAP);#define __sequence _sequence#define __sequence_end ;#define __process_end ;/* DSL */int
_tmain(int
argc, _TCHAR* argv[]){ __process_start { __transation_start { __sequence ( _do_A, _do_B ) __sequence_end } __transation_end(_success_submit_call, _fail_rollback_call) } __process_end return
0;}/* 业务函数*/unsigned int
_do_A(){ cout << "Do A."
<< endl; return
0; /* ok */ //return 1; /* fail */}unsigned int
_do_B(){ cout << "Do B."
<< endl; return
0; /* ok */ //return 1; /* fail */}/* 执行框架相关函数 */void
_process_start(){ cout << "Process start."
<< endl;}void
_transation_start(){ cout << "Transation start!"
<< endl;}void
_transation_end(void(*_fail_rollback)(_success_call,_fail_call, unsigned int), _success_call a, _fail_call b, unsigned int
result){ _fail_rollback(a, b, result); cout << "Transation end!"
<< endl;}void
_fail_rollback(_success_call a, _fail_call b, unsigned int
result){ /* 0-ok !0-fail */ if
((result>>31)) { cout << "Transation fail rollback..."
<< endl; b(result); } else { a(result); cout << "Transation ok!"
<< result << endl; }}void
_fail_rollback_call(unsigned int
result){ cout << "Trancation fail and rollback called."
<< endl;}void
_success_submit_call(unsigned int
result){ cout << "Trancation success and submit called."
<< endl;}void
_sequence(_do_sth a, ...){ va_list
ap; _do_sth do_it; va_start(ap, a); if
(!a) { return; } if
(!a()) { _RESULTBITMAP |= 1; } else { _RESULTBITMAP |= (1 << 31); return; } do_it = va_arg(ap, _do_sth); if
(!do_it) { va_end(ap); return; } if
(!do_it()) { _RESULTBITMAP |= (1 << 1); } else { _RESULTBITMAP |= (1 << 31); return; } do_it = va_arg(ap, _do_sth); if
(!do_it) { va_end(ap); return; } if
(!do_it()) { _RESULTBITMAP |= (1 << 2); } else { _RESULTBITMAP |= (1 << 31); return; } do_it = va_arg(ap, _do_sth); if
(!do_it) { va_end(ap); return; } if
(!do_it()) { _RESULTBITMAP |= (1 << 3); } else { _RESULTBITMAP |= (1 << 31); return; } do_it = va_arg(ap, _do_sth); if
(!do_it) { va_end(ap); return; } if
(!do_it()) { _RESULTBITMAP |= (1 << 4); } else { _RESULTBITMAP |= (1 << 31); return; } do_it = va_arg(ap, _do_sth); if
(!do_it) { va_end(ap); return; } if
(!do_it()) { _RESULTBITMAP |= (1 << 5); } else { _RESULTBITMAP |= (1 << 31); return; } do_it = va_arg(ap, _do_sth); if
(!do_it) { va_end(ap); return; } if
(!do_it()) { _RESULTBITMAP |= (1 << 6); } else { _RESULTBITMAP |= (1 << 31); return; } va_end(ap); cout << "Sequence do!"
<< endl;} |
原文：http://www.cnblogs.com/xumng/p/3587471.html