优化以下代码 /* 获取数据参数 */ pgdata->IsDisble = 0; pgdata->CurDataCount = 0; pgdata->PointBufCount = 0; // pgdata->pPointBuffer = pgdata->PointBuffer; pgdata->WaveColor = *wave_color; while (wave_count>0 && NULL!=pgdata) { pgdata->IsDisble = 0; pgdata->CurDataCount = 0; pgdata->LastDataCount = 0; pgdata->PointBufCount = 0; pgdata->pPointBuffer = *point_buf++; pgdata->WaveColor = *wave_color++; pgdata->PspnColor = *pspn_color++; pgdata->PointStatus = *pspn_status++; pgdata++; wave_count--; }
时间: 2024-02-24 16:57:03 浏览: 128
可以将重复的赋值语句提取出来,避免重复写多次,同时也可以将指针的自增操作放在赋值语句之后,简化代码,如下所示:
```
pgdata->IsDisble = 0;
pgdata->CurDataCount = 0;
pgdata->PointBufCount = 0;
pgdata->WaveColor = *wave_color;
while (wave_count > 0 && NULL != pgdata) {
pgdata->IsDisble = 0;
pgdata->CurDataCount = 0;
pgdata->LastDataCount = 0;
pgdata->PointBufCount = 0;
pgdata->pPointBuffer = *point_buf;
pgdata->WaveColor = *wave_color;
pgdata->PspnColor = *pspn_color;
pgdata->PointStatus = *pspn_status;
pgdata++;
wave_count--;
point_buf++;
wave_color++;
pspn_color++;
pspn_status++;
}
```
相关问题
pgdata->IsDisble = 0; pgdata->CurDataCount = 0; pgdata->PointBufCount = 0; pgdata->WaveColor = *wave_color; while (wave_count>0 && NULL!=pgdata) { pgdata->IsDisble = 0; pgdata->CurDataCount = 0; pgdata->LastDataCount = 0; pgdata->PointBufCount = 0; pgdata->pPointBuffer = *point_buf++; pgdata->WaveColor = *wave_color++; pgdata->PspnColor = *pspn_color++; pgdata->PointStatus = *pspn_status++; pgdata++; wave_count--; } 优化此代码,避免数据溢出
可以考虑使用指针运算代替逐个赋值的方式,从而提高效率和避免数据溢出的风险。具体地,可以使用以下代码来优化:
```c
pgdata->IsDisble = 0;
pgdata->CurDataCount = 0;
pgdata->PointBufCount = 0;
pgdata->WaveColor = *wave_color;
PGDATA* pgdata_end = pgdata + wave_count;
while (pgdata < pgdata_end) {
pgdata->IsDisble = 0;
pgdata->CurDataCount = 0;
pgdata->LastDataCount = 0;
pgdata->PointBufCount = 0;
pgdata->pPointBuffer = *point_buf++;
pgdata->WaveColor = *wave_color++;
pgdata->PspnColor = *pspn_color++;
pgdata->PointStatus = *pspn_status++;
++pgdata;
}
```
这里使用了指针加法 `pgdata + wave_count` 来计算 `pgdata` 的结束位置,然后用一个循环遍历 `pgdata` 到 `pgdata_end` 之间的所有元素,从而避免了逐个赋值的效率问题。指针加法和指针减法是常用的指针运算方式,在循环中使用指针运算可以提高代码的效率,并且避免了数据溢出的风险。
需要注意的是,由于 `pgdata + wave_count` 可能会指向不合法的内存位置,因此在使用指针运算时需要确保指针指向的内存空间是合法的。同时,由于指针运算可能会访问到未分配的内存空间,因此在使用指针运算时需要进行仔细的检查和测试。
优化代码 pgdata->IsDisble = 0; pgdata->CurDataCount = 0; pgdata->PointBufCount = 0; // pgdata->pPointBuffer = pgdata->PointBuffer; pgdata->WaveColor = *wave_color; while (wave_count>0 && NULL!=pgdata) { pgdata->IsDisble = 0; pgdata->CurDataCount = 0; pgdata->LastDataCount = 0; pgdata->PointBufCount = 0; pgdata->pPointBuffer = *point_buf++; pgdata->WaveColor = *wave_color++; pgdata->PspnColor = *pspn_color++; pgdata->PointStatus = *pspn_status++; pgdata++; wave_count--; }
可能的代码优化如下:
1. 可以将重复的代码提取出来,放到一个函数中,然后调用该函数即可。
2. 可以使用指针操作来代替数组下标操作,这样可以提高代码的运行效率。
3. 可以使用 for 循环代替 while 循环,这样可以使代码更加简洁。
优化后的代码如下:
```
void reset_pgdata(PGData* pgdata) {
pgdata->IsDisble = 0;
pgdata->CurDataCount = 0;
pgdata->LastDataCount = 0;
pgdata->PointBufCount = 0;
}
void update_pgdata(PGData* pgdata, PointBuf* point_buf, WaveColor* wave_color, PSPNColor* pspn_color, PSPNStatus* pspn_status) {
pgdata->pPointBuffer = point_buf;
pgdata->WaveColor = *wave_color;
pgdata->PspnColor = *pspn_color;
pgdata->PointStatus = *pspn_status;
}
void optimize_code(PGData* pgdata, PointBuf** point_buf, WaveColor* wave_color, PSPNColor* pspn_color, PSPNStatus* pspn_status, int wave_count) {
reset_pgdata(pgdata);
while (wave_count > 0 && NULL != pgdata) {
reset_pgdata(pgdata);
update_pgdata(pgdata, *point_buf++, wave_color++, pspn_color++, pspn_status++);
pgdata++;
wave_count--;
}
}
```
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