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how can i initialise the head with pthread_t tid ?

Posted on 2000-03-04
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Last Modified: 2013-12-26
In my project I have the structure defined like this.
/* Defining a structure for storing thread_id ,flag */
/* & expression */


typedef struct data
  {
    pthread_t tid;
    enum BOOLEAN flag;
    char *expr;
    struct data *next;
  }Tdinfo;

there is a finction called initialise_thread in which i am creating new node and initialising the values like this.

Tdinfo *initialise_thread()
{
        Tdinfo *head;
        head=(Tdinfo *)malloc(sizeof(Tdinfo));
        if(head==NULL) /* Null means memory was not allocated */
        {
                Log_Error(fp,"Memory allocation failed ");
                exit(EXIT_STATUS);
        }
        head->tid=0; /* here i want to initialise this tid value to be 0 */
        head->flag=False;
        head->expr=NULL;
        head->next=NULL;
        return(head);
}

The problem is that  the c compiler is giving me the error
error 1527: Incompatible types in cast: Must cas
t from scalar to scalar or to void type.

how to solve this problem ?


In my project I am creating a thread and i am storing the new thread id into the linked list.
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Question by:adinarayanak
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2 Comments
 
LVL 3

Accepted Solution

by:
ufolk123 earned 30 total points
ID: 2582915
Can not assume pthread_t to be an integer like this.
Use

pthread_t dummy;
memset(dummy,o,sizeof(pthread_t));
head->tid=dummy;
head->flag=False;
       
0
 

Author Comment

by:adinarayanak
ID: 2586945
but these are the compilation errors when i did like that.


cc: "Handle_thread.c", line 39: error 1718: Types are not assignment-compatible.
cc: "Handle_thread.c", line 39: warning 563: Argument #1 is not the correct type


here line 39 is :

memset(dummy,0,sizeof(pthread_t));

please do it.
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