Question

我正在尝试解析以下区域文件以获得总组合区域，非组合区域和总单元区域，但是我没有成功并且觉得我不知道如何执行此操作。我尝试读取每个值，但我一直收到错误：

所以我希望能够将以下值存储在三个独立的数组中：

20368.919640， 2050.360019， 22419.279659

这是我的档案：

****************************************
Report : area
Design : mymodule
Version: F-2011.09-SP1
Date   : Sat Mar 28 17:00:30 2015
****************************************

Library(s) Used:

    PLEXPVT (File: /bin/comp/temp/tech.2.1/PLEXPVT-PLEXPVT-CDS_4.1/libs/PLEXPVT.25C.db)
    PLEXPVT (File: /bin/comp/temp/tech.2.1/PLEXPVT-PLEXPVT-CDS_6.0/libs/PLEXPVT.25C.db)

Number of ports:                          277
Number of nets:                          5905
Number of cells:                         5341
Number of combinational cells:           5092
Number of sequential cells:               249
Number of macros:                           0
Number of buf/inv:                        606
Number of references:                     212

Combinational area:       20368.919640
Noncombinational area:    2050.360019
Net Interconnect area:      undefined  (Wire load has zero net area)

Total cell area:          22419.279659
Total area:                 undefined

Hierarchical area distribution
------------------------------

                                  Global cell area            Local cell area
                                  -------------------  ----------------------------- 
Hierarchical cell                 Absolute    Percent  Combi-      Noncombi-  Black
                                  Total       Total    national    national   boxes   Design--------------------------------  ----------  -------  ----------  ---------  ------  ---------
mymodule                          22419.2797    100.0  20368.9196  2050.3600  0.0000  mymodule
--------------------------------  ----------  -------  ----------  ---------  ------  ---------
Total                                                  20368.9196  2050.3600  0.0000

Answer 1

一种简单的方法不是试图理解所有内容，而只关注包含所需数据的行;例如：

double comb=0, ncomb=0, tcell=0;
int comb_count=0, ncomb_count=0, tcell_count=0;

std::ifstream input(filename);
for (std::string L; std::getline(input, L);) {
    if (get_data(L, "Combinational area", &comb)) comb_count++;
    if (get_data(L, "Noncombinational area", &ncomb)) ncomb_count++;
    if (get_data(L, "Total cell area", &tcell)) tcell_count++;
}

if (comb_count==1 && ncomb_count==1 && tcell_count==1) {
    // The file contained exactly one of each
    vcomb.push_back(comb);
    vncomb.push_back(ncomb);
    vtcell.push_back(tcell);
} else {
    // Something was missing or data repeated
    ...
}

其中get_data只是

bool get_data(const std::string L,
              const std::string& prefix,
              double *v) {
    return (sscanf(L.c_str(), (prefix + ": %lf").c_str(), v) == 1);
}

如何解析这个文件？

1 个答案: