Getting error while using OpenMP along with map in c++

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  • doijadss
    New Member
    • Dec 2012
    • 1
    #1

    Getting error while using OpenMP along with map in c++

    I am using map for assigning an identifiers for a line from file in c++.
    also i am using IDs for a pattern in line {name,operator, val} which is separated by ';'.
    I am using read_pub() for calculating how many patterns are there in a line.

    What is the problem in this code.?

    Code:
    #include<stdio.h>
#include<stdlib.h>
#include<iostream>
#include<fstream>
#include<omp.h>
#include<map>
#include <sstream>

using namespace std;
struct predicate
{
	string att_name;
	string op;
	int val;
};
stringstream convert1;
string whole="";

map<string,int> sub_map;
map<string,int>::iterator sub_i;

map<int,int> count_map;
map<int,int>::iterator count_i;

map<string,int> pred_map;
map<string,int>::iterator pred_i;

int subs_count=1;

void output()
{
	cout<<endl<<"----------Subs Map:--------"<<endl;
	for ( sub_i=sub_map.begin() ; sub_i!= sub_map.end(); sub_i++ )
    	{
    		cout<<sub_i->first<<"----->"<<sub_i->second<<endl;
    	}
	cout<<endl<<"----------Preds Map:--------"<<endl;
    	for ( pred_i=pred_map.begin() ; pred_i!= pred_map.end(); pred_i++ )
    	{
    		cout<<pred_i->first<<"----->"<<pred_i->second<<endl;
    	}
	cout<<endl<<"----------Count Map:--------"<<endl;
    	for ( count_i=count_map.begin() ; count_i!= count_map.end(); count_i++ )
    	{
    		cout<<count_i->first<<"----->"<<count_i->second<<endl;
    	}
    	
}

void map_sub(string name)
{
	sub_map[name]=subs_count;
	count_map[subs_count]=0;
	subs_count++;
}

void map_preds(string name)
{
	pred_map[name]=subs_count;
}

void inc2(int a)
{
	count_map[a]++;
}

void inc(string name)
{
	for ( pred_i=pred_map.begin() ; pred_i!= pred_map.end(); pred_i++ )
    	{
    		if(pred_i->first==name)
    			inc2(pred_i->second);
    	}
}

void inc3(string name,string op,int val,int z)
{
	#pragma omp critical
	{
		cout<<name<<":"<<op<<":"<<val<<":"<<z<<endl;
	}
	convert1 << val;
	whole=string(name)+string(op)+string(convert1.str());
	convert1.str("");
	inc(whole);
}

void read_sub()
{
	string attr;
  	string op;
  	string value;
	string event_line="";
	int len_event=0;
	int val=0;
	//int no_preds_sub=0;
	string whole_pred="";
	stringstream convert;
	//int pred_id=0;
	
	ifstream sub("/home/Suhas/Data/sub.txt");
	if(sub.is_open())
	{
		while ( sub.good() )
   	 	{
      		getline (sub,event_line);
      		if(event_line.length()==0)
      			break;
      
			len_event=event_line.length();
			attr="";
     	 	op="";
     	 	value="";
     	 	val=0;
     	 	//no_preds_sub=0;
     	 	for(int i=0;i<len_event;i++)
     	 	{
     	 		if(event_line[i]==';')
     	 		{
     	 			val=atoi(value.c_str()); //converting string to integer...    	 			
     	 			convert << val;
     	 			whole_pred=string(attr)+string(op)+string(convert.str());
     	 			convert.str("");
     	 			map_preds(whole_pred);
     	 			
     	 			attr=""; 	op="";  value="";
     	 			i++;
     	 		}
     	 		if(event_line[i]>='a' || event_line[i]>='A') //for alphabets...
     	 			attr+=event_line[i];
     	 				
     	 		else if(event_line[i]>=48 && event_line[i]<=57) //for value...
     	 			value+=event_line[i];
     	 				
     	 		else 				// for operator...
     	 			op+=event_line[i];
     	 	}//end for....
     	 	map_sub(event_line);
		}//end while....
	}
	else
		cout<<"Error";
		
	sub.close();	
	//h1.output();	
}


void read_pub()
{
	predicate preds_t[15];
	string attr="";
  	string op="";
  	string value="";
	string pub_line="";
	string whole="";
	int len_pub=0;
	stringstream convert;
	int val=0;
	//--------------------------------------/
	int no_preds=0;
	int j=0;
	//--------------------------------------/
	ifstream pub("/home/Suhas/Data/pub.txt");
	if(pub.is_open())
	{
		while ( pub.good() )
   	 	{
      		getline (pub,pub_line);
      		if(pub_line.length()==0)
      			break;	
			len_pub=pub_line.length();
			
			//--------------------------------------/
			
			no_preds=0;
			for(int i=0;i<len_pub;i++)
			{
				if(pub_line[i]==';')
					no_preds++;
			}
			cout<<endl<<no_preds<<endl;
			j=0;		
			attr="";
     	 	op="";
     	 	value="";
     	 	for(int i=0;i<len_pub;i++)
     	 	{
     	 		if(pub_line[i]==';')
     	 		{
     	 			val=atoi(value.c_str()); //converting string to integer...
     	 			preds_t[j].att_name=attr;
     	 			preds_t[j].op=op;
     	 			preds_t[j].val=val;
     	 			j++;     	 			
     	 			attr=""; 	op="";  value="";
     	 			i++;
     	 		}
     	 		if(pub_line[i]>='a' || pub_line[i]>='A') //for alphabets...
     	 			attr+=pub_line[i];
     	 				
     	 		else if(pub_line[i]>=48 && pub_line[i]<=57) //for value...
     	 			value+=pub_line[i];
     	 				
     	 		else 				// for operator...
     	 			op+=pub_line[i];
     	 	}//end for....
     	 	
     	 	
			for(int i=0;i<j;i++)
			{
				cout<<preds_t[i].att_name<<"	:	"<<preds_t[i].op<<" :	"<<preds_t[i].val<<endl;
			}
			
			
			
			#pragma omp parallel for
			for(int i=0;i<j;i++)
			{
				inc3(preds_t[i].att_name,preds_t[i].op,preds_t[i].val,omp_get_thread_num());
			}	
			
				

		#pragma omp barrier		
		}//end while....
	}
	else
		cout<<"Error";
	pub.close();	
}


int main()
{
	read_sub();
	output();
	read_pub();
	cout<<endl<<endl<<"-:SDASDASDAD:-"<<endl;
	output();
}

    Both files sub.txt and pub.txt contains:--

    ABLS=8;ALS=3;AS L=12;Ab=6;Abnak i=3;Abutilon=5; Ac=8;Acanthophi s=13;Acanthurus =5;Accra=4;

    AEC=10;ANSI=6;A SCII=9;AZ=5;Abe naki=3;Abib=4;A bkhazian=1;Abor =14;Acalypha=15 ;Acarina=7;

    ABLS=11;ADR=8;A EC=4;APC=2;ATP= 10;Abkhas=12;Ab naki=4;Abo=4;Ab raham=4;Acantho cybium=12;

    AA=8;ALS=15;ANS I=8;ATM=13;Ab=1 1;Abib=13;Abies =13;Aborigine=1 4;Ac=2;Accadian =2;



    I am getting output/error as:-
    ----------Subs Map:--------
    AA=8;ALS=15;ANS I=8;ATM=13;Ab=1 1;Abib=13;Abies =13;Aborigine=1 4;Ac=2;Accadian =2;----->4
    ABLS=11;ADR=8;A EC=4;APC=2;ATP= 10;Abkhas=12;Ab naki=4;Abo=4;Ab raham=4;Acantho cybium=12;----->3
    ABLS=8;ALS=3;AS L=12;Ab=6;Abnak i=3;Abutilon=5; Ac=8;Acanthophi s=13;Acanthurus =5;Accra=4;----->1
    AEC=10;ANSI=6;A SCII=9;AZ=5;Abe naki=3;Abib=4;A bkhazian=1;Abor =14;Acalypha=15 ;Acarina=7;----->2

    ----------Preds Map:--------
    AA=8----->4
    ABLS=11----->3
    ABLS=8----->1
    ADR=8----->3
    AEC=10----->2
    AEC=4----->3
    ALS=15----->4
    ALS=3----->1
    ANSI=6----->2
    ANSI=8----->4
    APC=2----->3
    ASCII=9----->2
    ASL=12----->1
    ATM=13----->4
    ATP=10----->3
    AZ=5----->2
    Ab=11----->4
    Ab=6----->1
    Abenaki=3----->2
    Abib=13----->4
    Abib=4----->2
    Abies=13----->4
    Abkhas=12----->3
    Abkhazian=1----->2
    Abnaki=3----->1
    Abnaki=4----->3
    Abo=4----->3
    Abor=14----->2
    Aborigine=14----->4
    Abraham=4----->3
    Abutilon=5----->1
    Ac=2----->4
    Ac=8----->1
    Acalypha=15----->2
    Acanthocybium=1 2----->3
    Acanthophis=13----->1
    Acanthurus=5----->1
    Acarina=7----->2
    Accadian=2----->4
    Accra=4----->1

    ----------Count Map:--------
    1----->0
    2----->0
    3----->0
    4----->0

    10
    ABLS : = : 8
    ALS : = : 3
    ASL : = : 12
    Ab : = : 6
    Abnaki : = : 3
    Abutilon : = : 5
    Ac : = : 8
    Acanthophis : = : 13
    Acanthurus : = : 5
    Accra : = : 4
    ABLS:=:8:0
    Acanthurus:=:5: 4
    Ac:=:8:3
    Abnaki:=:3:2
    ASL:=:12:1
    ALS:=:3:0
    Accra:=:4:4
    Ab:=:6:1
    Acanthophis:=:1 3:3
    *** glibc detected *** ./a.out: double free or corruption (fasttop): 0x00007f4458000 920 ***
    ======= Backtrace: =========
    /lib64/libc.so.6(+0x75 916)[0x7f4470ecf916]
    /usr/lib64/libstdc++.so.6( _ZNSsD1Ev+0x39)[0x3cd629d4a9]
    ./a.out[0x402195]
    ./a.out[0x403527]
    /usr/lib64/libgomp.so.1[0x3cd6e08502]
    /lib64/libpthread.so.0 (+0x7851)[0x7f44711f4851]
    /lib64/libc.so.6(clone +0x6d)[0x7f4470f4211d]
    ======= Memory map: ========
    00400000-00408000 r-xp 00000000 fd:02 5377450 /home/Suhas/Desktop/Total Dissertation/cpp programs/try parellel/a.out
    00608000-00609000 rw-p 00008000 fd:02 5377450 /home/Suhas/Desktop/Total Dissertation/cpp programs/try parellel/a.out
    0189b000-018bc000 rw-p 00000000 00:00 0 [heap]
    3cd2600000-3cd2616000 r-xp 00000000 fd:00 36502 /lib64/libgcc_s-4.4.6-20120305.so.1
    3cd2616000-3cd2815000 ---p 00016000 fd:00 36502 /lib64/libgcc_s-4.4.6-20120305.so.1
    3cd2815000-3cd2816000 rw-p 00015000 fd:00 36502 /lib64/libgcc_s-4.4.6-20120305.so.1
    3cd6200000-3cd62e8000 r-xp 00000000 fd:00 76870 /usr/lib64/libstdc++.so.6. 0.13
    3cd62e8000-3cd64e8000 ---p 000e8000 fd:00 76870 /usr/lib64/libstdc++.so.6. 0.13
    3cd64e8000-3cd64ef000 r--p 000e8000 fd:00 76870 /usr/lib64/libstdc++.so.6. 0.13
    3cd64ef000-3cd64f1000 rw-p 000ef000 fd:00 76870 /usr/lib64/libstdc++.so.6. 0.13
    3cd64f1000-3cd6506000 rw-p 00000000 00:00 0
    3cd6e00000-3cd6e0d000 r-xp 00000000 fd:00 40701 /usr/lib64/libgomp.so.1.0. 0
    3cd6e0d000-3cd700c000 ---p 0000d000 fd:00 40701 /usr/lib64/libgomp.so.1.0. 0
    3cd700c000-3cd700d000 rw-p 0000c000 fd:00 40701 /usr/lib64/libgomp.so.1.0. 0
    7f4458000000-7f4458021000 rw-p 00000000 00:00 0
    7f4458021000-7f445c000000 ---p 00000000 00:00 0
    7f4460000000-7f4460021000 rw-p 00000000 00:00 0
    7f4460021000-7f4464000000 ---p 00000000 00:00 0
    7f4464000000-7f4464021000 rw-p 00000000 00:00 0
    7f4464021000-7f4468000000 ---p 00000000 00:00 0
    7f4468000000-7f4468021000 rw-p 00000000 00:00 0
    7f4468021000-7f446c000000 ---p 00000000 00:00 0
    7f446c64b000-7f446c64c000 ---p 00000000 00:00 0
    7f446c64c000-7f446d04c000 rw-p 00000000 00:00 0
    7f446d04c000-7f446d04d000 ---p 00000000 00:00 0
    7f446d04d000-7f446da4d000 rw-p 00000000 00:00 0
    7f446da4d000-7f446da4e000 ---p 00000000 00:00 0
    7f446da4e000-7f446e44e000 rw-p 00000000 00:00 0
    7f446e44e000-7f446e44f000 ---p 00000000 00:00 0
    7f446e44f000-7f446ee4f000 rw-p 00000000 00:00 0
    7f446ee4f000-7f446ee50000 ---p 00000000 00:00 0
    7f446ee50000-7f446f850000 rw-p 00000000 00:00 0
    7f446f850000-7f446f851000 ---p 00000000 00:00 0
    7f446f851000-7f4470251000 rw-p 00000000 00:00 0
    7f4470251000-7f4470252000 ---p 00000000 00:00 0
    7f4470252000-7f4470c52000 rw-p 00000000 00:00 0
    7f4470c52000-7f4470c59000 r-xp 00000000 fd:00 75980 /lib64/librt-2.12.so
    7f4470c59000-7f4470e58000 ---p 00007000 fd:00 75980 /lib64/librt-2.12.so
    7f4470e58000-7f4470e59000 r--p 00006000 fd:00 75980 /lib64/librt-2.12.so
    7f4470e59000-7f4470e5a000 rw-p 00007000 fd:00 75980 /lib64/librt-2.12.so
    7f4470e5a000-7f4470fe3000 r-xp 00000000 fd:00 30952 /lib64/libc-2.12.so
    7f4470fe3000-7f44711e3000 ---p 00189000 fd:00 30952 /lib64/libc-2.12.so
    7f44711e3000-7f44711e7000 r--p 00189000 fd:00 30952 /lib64/libc-2.12.so
    7f44711e7000-7f44711e8000 rw-p 0018d000 fd:00 30952 /lib64/libc-2.12.so
    7f44711e8000-7f44711ed000 rw-p 00000000 00:00 0
    7f44711ed000-7f4471204000 r-xp 00000000 fd:00 30976 /lib64/libpthread-2.12.so
    7f4471204000-7f4471404000 ---p 00017000 fd:00 30976 /lib64/libpthread-2.12.so
    7f4471404000-7f4471405000 r--p 00017000 fd:00 30976 /lib64/libpthread-2.12.so
    7f4471405000-7f4471406000 rw-p 00018000 fd:00 30976 /lib64/libpthread-2.12.so
    7f4471406000-7f447140a000 rw-p 00000000 00:00 0
    7f447140a000-7f447148d000 r-xp 00000000 fd:00 75974 /lib64/libm-2.12.so
    7f447148d000-7f447168c000 ---p 00083000 fd:00 75974 /lib64/libm-2.12.so
    7f447168c000-7f447168d000 r--p 00082000 fd:00 75974 /lib64/libm-2.12.so
    7f447168d000-7f447168e000 rw-p 00083000 fd:00 75974 /lib64/libm-2.12.so
    7f447168e000-7f44716ae000 r-xp 00000000 fd:00 30945 /lib64/ld-2.12.so
    7f4471893000-7f4471899000 rw-p 00000000 00:00 0
    7f44718aa000-7f44718ad000 rw-p 00000000 00:00 0
    7f44718ad000-7f44718ae000 r--p 0001f000 fd:00 30945 /lib64/ld-2.12.so
    7f44718ae000-7f44718af000 rw-p 00020000 fd:00 30945 /lib64/ld-2.12.so
    7f44718af000-7f44718b0000 rw-p 00000000 00:00 0
    7fff47604000-7fff47619000 rw-p 00000000 00:00 0 [stack]
    7fff476ed000-7fff476ee000 r-xp 00000000 00:00 0 [vdso]
    ffffffffff60000 0-ffffffffff60100 0 r-xp 00000000 00:00 0 [vsyscall]
    Aborted
    Tags: None
    • zmbd
      Recognized Expert Moderator Expert
      • Mar 2012
      • 5501
      #2
      When I look up your error (*** glibc detected *** ./a.out: double free or corruption (fasttop): 0x00007f4458000 920 ***) I get the impression that some how either you freed the same thing twice or you corrupted its data structures, perhaps by over running a buffer.

      Sorry, I'm not able to dig thru some 150+ lines of code right now to determine which or what; however, hopfully this will get you on the correct path to debuging your code.

        Comment

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