use single thread scheduler and worker

Makefile

@@ -33,7 +33,7 @@ httpd: lib $(SERVER_O)
 
 relay: lib $(SERVER_O)
 	$(CC) $(CFLAGS)  $(SERVER_O)    -o $(BUILDIRD)/relay relay.c $(SERVERLIB)
-	cp relayd $(BUILDIRD)
+	cp forward $(BUILDIRD)
 lib: $(LIBOBJS)
 	$(CC) $(CFLAGS)  $(DB_LIB) $(SSL_LIB)  -shared -o $(LIB_NAME).$(EXT) $(LIBOBJS)
 	cp $(LIB_NAME).$(EXT) $(LIB_PATH$)/

libs/scheduler.c

@@ -80,28 +80,6 @@ static int available_workers()
     pthread_mutex_unlock(&scheduler.server_lock);
     return n;
 }
-
-static void work(void* data)
-{
-    antd_task_item_t it;
-    antd_worker_t* worker = (antd_worker_t*)data;
-    while(working())
-    {
-        pthread_mutex_lock(&scheduler.server_lock);
-        worker->status = 0;
-        pthread_mutex_unlock(&scheduler.server_lock);
-        // fetch the next in queue
-        it = next_task();
-        if(!it) continue;
-        //LOG("worker processing \n");
-        pthread_mutex_lock(&scheduler.server_lock);
-        worker->status = 1;
-        pthread_mutex_unlock(&scheduler.server_lock);
-        // execute the task
-        antd_execute_task(it);
-    }
-}
-
 static antd_callback_t* callback_of( void* (*callback)(void*) )
 {
     antd_callback_t* cb = NULL;
@@ -151,33 +129,64 @@ static void execute_callback(antd_task_t* task)
         free(task);
     }
 }
-
+static void work(void* data)
+{
+    antd_worker_t* worker = (antd_worker_t*)data;
+    while(working())
+    {
+       antd_attach_task(worker);
+    }
+}
 
 /*
     Main API methods
     init the main scheduler
 */
+
+/*
+* assign task to a worker
+*/
+void antd_attach_task(antd_worker_t* worker)
+{
+    antd_task_item_t it;
+    pthread_mutex_lock(&scheduler.server_lock);
+    worker->status = 0;
+    pthread_mutex_unlock(&scheduler.server_lock);
+    // fetch the next in queue
+    it = next_task();
+    if(!it) return;
+    //LOG("worker processing \n");
+    pthread_mutex_lock(&scheduler.server_lock);
+    worker->status = 1;
+    pthread_mutex_unlock(&scheduler.server_lock);
+    // execute the task
+    antd_execute_task(it);
+}
+
 void antd_scheduler_init(int n)
 {
     time_t t;
     srand((unsigned) time(&t));
     scheduler.n_workers = n;
     scheduler.status = 1;
-    scheduler.workers = (antd_worker_t*)malloc(n*(sizeof(antd_worker_t)));
-    if(!scheduler.workers)
-    {
-        LOG("Cannot allocate memory for worker\n");
-        exit(-1);
-    }
     for(int i = 0; i < N_PRIORITY; i++) scheduler.task_queue[i] = NULL;
     // create scheduler.workers
-    for(int i = 0; i < scheduler.n_workers;i++)
+    if(n > 0)
     {
-        scheduler.workers[i].status = 0;
-        if (pthread_create(&scheduler.workers[i].pid , NULL,(void *(*)(void *))work, (void*)&scheduler.workers[i]) != 0)
+        scheduler.workers = (antd_worker_t*)malloc(n*(sizeof(antd_worker_t)));
+        if(!scheduler.workers)
         {
-            scheduler.workers[i].status = -1;
-            perror("pthread_create: cannot create worker\n");
+            LOG("Cannot allocate memory for worker\n");
+            exit(-1);
+        }
+        for(int i = 0; i < scheduler.n_workers;i++)
+        {
+            scheduler.workers[i].status = 0;
+            if (pthread_create(&scheduler.workers[i].pid , NULL,(void *(*)(void *))work, (void*)&scheduler.workers[i]) != 0)
+            {
+                scheduler.workers[i].status = -1;
+                perror("pthread_create: cannot create worker\n");
+            }
         }
     }
     LOG("Antd scheduler initialized with %d worker\n", scheduler.n_workers);
@@ -197,6 +206,7 @@ void antd_scheduler_destroy()
 {
     // free all the chains
     antd_task_item_t it, curr;
+    stop();
     for(int i=0; i < N_PRIORITY; i++)
     {
         it = scheduler.task_queue[i];
@@ -211,7 +221,6 @@ void antd_scheduler_destroy()
             free(curr);
         }
     }
-    stop();
 }
 
 /*

libs/scheduler.h

@@ -94,4 +94,5 @@ int antd_scheduler_status();
 void antd_execute_task(antd_task_item_t);
 
 int antd_scheduler_busy();
+void antd_attach_task(antd_worker_t* worker);
 #endif

relay.c

@@ -1,5 +1,6 @@
 #include "http_server.h"
 #include "libs/scheduler.h"
+#include <fcntl.h>
 /*
 this node is a relay from the http
 to https
@@ -65,7 +66,7 @@ void* antd_get_host(void * client)
     void** data = (void**)malloc(2*(sizeof *data));
     data[0] = client;
     data[1] = (void*)host;
-    LOG("Host is %s\n", host);
+    LOG("[%s] Request for: %s --> https://%s\n", ((antd_client_t*)client)->ip, host, host);
     return antd_create_task(antd_redirect,data, NULL);
 }
 
@@ -84,23 +85,28 @@ int main(int argc, char* argv[])
 	signal(SIGABRT, SIG_IGN);
 	signal(SIGINT, stop_serve);
 	server_sock = startup(&port);
-    // 1 worker is
-    antd_scheduler_init(1);
-	LOG("httpd running on port %d\n", port);
+    struct timeval timeout;      
+    timeout.tv_sec = 0;
+    timeout.tv_usec = 500;
+    // 0 worker
+    antd_scheduler_init(0);
+    antd_worker_t worker;
+    worker.status = 0;
+    // set server socket to non blocking
+    fcntl(server_sock, F_SETFL, O_NONBLOCK); /* Change the socket into non-blocking state	*/
+	LOG("relayd running on port %d\n", port);
 
 	while (antd_scheduler_status())
 	{
+        // execute task
+        antd_attach_task(&worker);
 		client_sock = accept(server_sock,(struct sockaddr *)&client_name,&client_name_len);
 		if (client_sock == -1)
 		{
-			perror("Cannot accept client request\n");
 			continue;
 		}
         antd_client_t* client = (antd_client_t*)malloc(sizeof(antd_client_t));
 		// set timeout to socket
-		struct timeval timeout;      
-		timeout.tv_sec = 0;
-		timeout.tv_usec = 500;
 
 		if (setsockopt (client_sock, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout,sizeof(timeout)) < 0)
 			perror("setsockopt failed\n");