csu3_am335x/EVSE/Modularization/ocppfiles/TransactionQueue.c

#include <stdio.h> 
#include <stdlib.h> 
#include <string.h>

#if 0
struct node { 
	char *uuid;
    char *data;
    struct node *next; 
}; 

typedef struct node Node; 

#if 0
void createq(); 
int showfront(char *uuid, char *data);
void addq(char *uuid, char *data);
void delq(); 
void showqueue();
#endif

Node *front, *rear; 

void createq() { 
	printf("createq \n");
    front = rear = (Node*) malloc(sizeof(Node)); 
    front->next = rear->next = NULL; 

    if(front == NULL)
    {
    		printf("front is NULL \n");
    }
    else
    {
    	printf("front is not NULL \n");
    }


    printf(" front: (@%p)\n",&(front->next));
    if(front->next == NULL)
    {
       		printf("front->next is NULL \n");
    }
    else
    {
       	printf("front->next is not NULL \n");
    }
} 

int showfront(char *uuid, char *data){
	Node* tmpnode;

	front = rear = (Node*) malloc(sizeof(Node));
	front->next = rear->next = NULL;


    if(front->next == NULL)
    {

    	printf("\n queue is null");
    	strcpy(uuid,"");
    	strcpy(data,"");
    	return 0;
    }
    else 
    {
    	printf("test test 11111 !!! \n");

    	printf("\n uuid：%s", front->next->uuid);
    	printf("\n頂端值：%s", front->next->data);
    	strcpy(uuid,front->next->uuid);
    	strcpy(data,front->next->data);
    	return 1;
    }

} 

void addq(char *uuid, char *data) {
    Node *newnode; 

    newnode = (Node*) malloc(sizeof(Node)); 

    if(front->next == NULL)  
        front->next = newnode; 
    
    newnode->uuid = uuid;
    newnode->data = data; 
    newnode->next = NULL; 
    rear->next = newnode; 
    rear = newnode; 
} 

void delq() { 
    Node* tmpnode; 

    if(front->next == NULL) { 
        printf("\n佇列已空！"); 
        return; 
    } 

    tmpnode = front->next; 
    front->next = tmpnode->next; 
    free(tmpnode);    
} 

void showqueue() { 
    Node* tmpnode; 

    tmpnode = front->next; 

    printf("\n佇列內容："); 
    while(tmpnode != NULL) { 
        printf("%s ", tmpnode->data);
        tmpnode = tmpnode->next; 
    } 
} 

#endif