sci/src/threadlist.c

78 lines
2.4 KiB
C

/**
* sci - a simple ci system
Copyright (C) 2024 Asger Gitz-Johansen
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "threadlist.h"
#include <stdlib.h>
// TODO: mutex should really be per-list.
pthread_mutex_t threadlist_mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_list_node* create_thread_node(pthread_t thread) {
pthread_list_node* new = malloc(sizeof(pthread_list_node));
new->previous = NULL;
new->next = NULL;
new->thread = thread;
return new;
}
pthread_list_node* add_thread(pthread_t thread, pthread_list_node* root) {
pthread_mutex_lock(&threadlist_mutex);
pthread_list_node* cursor = root;
while(cursor->next != NULL)
cursor = cursor->next;
pthread_list_node* new = malloc(sizeof(pthread_list_node));
new->previous = cursor;
new->next = NULL;
new->thread = thread;
cursor->next = new;
pthread_mutex_unlock(&threadlist_mutex);
return new;
}
pthread_list_node* add_thread_node(pthread_list_node* root, pthread_list_node* node) {
pthread_mutex_lock(&threadlist_mutex);
pthread_list_node* cursor = root;
while(cursor->next != NULL)
cursor = cursor->next;
node->previous = cursor;
node->next = NULL;
cursor->next = node;
pthread_mutex_unlock(&threadlist_mutex);
return node;
}
void remove_thread_node(pthread_list_node* node) {
pthread_mutex_lock(&threadlist_mutex);
pthread_list_node* prev = node->previous;
pthread_list_node* next = node->next;
free(node);
if(prev != NULL)
prev->next = next;
if(next != NULL)
next->previous = prev;
pthread_mutex_unlock(&threadlist_mutex);
}
void clear_thread_list(pthread_list_node* root) {
pthread_list_node* cursor = root;
while(cursor != NULL) {
pthread_join(cursor->thread, NULL);
cursor = cursor->next;
free(cursor->previous);
}
}