trace bottom up time

.vscode/settings.json

@@ -5,6 +5,7 @@
     "files.associations": {
         "socket_wrapper.h": "c",
         "stdalign.h": "c",
-        "timerhelper.h": "c"
+        "timerhelper.h": "c",
+        "termio.h": "c"
     }
 }

Makefile

@@ -9,11 +9,13 @@ all:
 
 socket_wrapper.o: socket_wrapper.c socket_wrapper.h
 	$(CC) -c socket_wrapper.c -o socket_wrapper.o $(CFLAGS)
+display_bar.o: display_bar.c display_bar.h
+	$(CC) -c display_bar.c -o display_bar.o $(CFLAGS)
 
 client: socket_wrapper.o client.c
 	$(CC) -o client client.c socket_wrapper.o $(CFLAGS)
-server:  socket_wrapper.o server.c
+server:  socket_wrapper.o server.c display_bar.o
-	$(CC) -o server server.c socket_wrapper.o $(CFLAGS)
+	$(CC) -o server server.c socket_wrapper.o display_bar.o $(CFLAGS)
 p-server: socket_wrapper.o p-server.c
 	$(CC) -o p-server p-server.c socket_wrapper.o $(CFLAGS)
 p-client: socket_wrapper.o p-client.c

README.md

@@ -33,11 +33,13 @@ For server
 - DEFAULT_RESPONSE_REQUEST(p-server only): 3(-1 is INF)
 - USE_TRACE
 - USE_NO_QUEUE
+- SLOW_SERVER(microsecond unit): if turn on sendfile option, DEFAULT_SEND_FILE_CHUNK_SIZE/SLOW bytes/usec, otherwise (buf_size/SLOW_CLIENT) bytes/usec
 
 For client
 - MUL_CLIENT(second unit)
 - SLOW_CLIENT(microsecond unit, (buf_size/SLOW_CLIENT) bytes/usec)
-- DEFAULT_PROGRESS_BAR_WIDTH: 30
    
 For both
-- TIMEOUT: 5(second unit)
+- TIMEOUT: 5(second unit)
+- MAX_TERMINAL_ROW
+- DEFAULT_PROGRESS_BAR_WIDTH: 30

client.c

@@ -238,7 +238,7 @@ static bool init_queue_from_chararray(simple_queue_t * restrict q,const char **
 // q have lifetime of arg f.
 // do not close file f before queue closed.
 static bool init_queue_from_file(simple_queue_t * restrict q, FILE * f){
-    q->method = From_CharArray;
+    q->method = From_FileStream;
     q->fs = f;
     return true;
 }

display_bar.c

@@ -0,0 +1,118 @@
+#include<stdio.h>
+#include<stdbool.h>
+#include<stdarg.h>
+#include<string.h>
+#include<errno.h>
+#include<unistd.h>
+#include<termio.h>
+#include<pthread.h>
+
+#include "display_bar.h"
+#include "timerhelper.h"
+
+enum{
+#ifndef DEFAULT_PROGRESS_BAR_WIDTH
+    PROGRESS_BAR_WIDTH = 30,
+#else
+    PROGRESS_BAR_WIDTH = DEFAULT_PROGRESS_BAR_WIDTH;
+#endif
+#ifndef DEFAULT_MAX_TERMINAL_ROW
+    MAX_TERMINAL_ROW = 1000,
+#else
+    MAX_TERMINAL_ROW = MAX_TERMINAL_ROW;
+#endif
+};
+
+static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+static raw_progress_bar_t scrolled = 1;
+
+void ready_progress_bar(){
+    fflush(stdout);
+}
+
+void lock_scrolled(){
+    pthread_mutex_lock(&mutex);
+}
+void unlock_scrolled(){
+    pthread_mutex_unlock(&mutex);
+}
+
+void add_scrolled_unlocked(unsigned int i){
+    scrolled += i;
+}
+raw_progress_bar_t create_raw_progress_bar(){
+    int ret;
+    lock_scrolled();
+    ret = scrolled;
+    //make space for progress bar
+    fprintf(stdout,"\n");
+    scrolled++;
+    unlock_scrolled();
+    return ret;
+}
+
+void RawDisplayProgressBar(raw_progress_bar_t bar,size_t offset,size_t total,const char * filename){
+    char buf[PROGRESS_BAR_WIDTH];
+    size_t i;
+    double cur_progress = ((double)offset)/(double)total *100.f;
+    size_t cur_pos = (cur_progress / 100.0 * PROGRESS_BAR_WIDTH); //must be less than SIZE_MAX. other value is undefined behavior.
+    int pos;
+    struct winsize wnd_size;
+    if (offset == total)
+        cur_pos = PROGRESS_BAR_WIDTH;
+    for (i = 0; i < PROGRESS_BAR_WIDTH; i++){
+        if (i < cur_pos)
+            buf[i] = '=';
+        else if(i == cur_pos)
+            buf[i] = '>';
+        else buf[i] = '.';
+    }
+    lock_scrolled();
+    pos = scrolled - bar;
+    if (pos > MAX_TERMINAL_ROW) {
+        unlock_scrolled();
+        return;
+    }//optimization.
+    //if ioctl failed? what should i do...
+    ioctl(STDIN_FILENO,TIOCGWINSZ,(char *)&wnd_size);
+    if (wnd_size.ws_row < pos) return;
+    fprintf(stdout,"\x1b[%dA[%s]: %.2f%% %s bytes: %ld/%ld \x1b[%dB\r",pos,buf,cur_progress,filename,total,offset,pos);
+    fflush(stdout);
+    unlock_scrolled();
+}
+bool isatty_file(FILE * file){
+    return isatty(fileno(file));
+}
+void myd_perror(const char * msg){
+    char buf[1024];
+    int err = errno;
+    strerror_r(errno,buf,sizeof(buf));
+    errno = err;
+    if (isatty(STDERR_FILENO)){
+        lock_scrolled();
+        scrolled++;
+        fprintf(stderr,"%s: %s\n",msg,buf);
+        unlock_scrolled();
+    }
+}
+
+void init_progress_bar(progress_bar_t * bar,int update_rate){
+    memset(bar,0,sizeof(*bar));
+    bar->bar = create_raw_progress_bar();
+    bar->update_rate = update_rate;
+}
+
+void DisplayProgressBar(progress_bar_t * bar,size_t offset,size_t total,const char * filename, bool sync){
+    unsigned diff;
+    struct timespec ts,dif;
+    clock_gettime(CLOCK_REALTIME,&ts);
+    if (!sync){
+        dif = timespec_sub(ts,bar->last_update);
+        diff = dif.tv_nsec / 1000000 + dif.tv_sec;
+        if (diff < bar->update_rate){
+            return;
+        }
+    }
+    bar->last_update = ts;
+    RawDisplayProgressBar(bar->bar,offset,total,filename);
+}

display_bar.h

@@ -0,0 +1,37 @@
+#include<stdio.h>
+#include<time.h>
+#include<stdbool.h>
+
+#ifndef _DISPLAY_BAR_H_
+#define _DISPLAY_BAR_H_
+
+typedef unsigned raw_progress_bar_t;
+
+void lock_scrolled();
+
+void unlock_scrolled();
+
+void ready_progress_bar();
+
+void add_scrolled_unlocked(unsigned int i);
+
+raw_progress_bar_t create_raw_progress_bar();
+
+void RawDisplayProgressBar(raw_progress_bar_t bar,size_t offset,size_t total,const char * filename);
+
+bool isatty_file(FILE * file);
+
+void myd_perror(const char * msg);
+
+typedef struct {
+    raw_progress_bar_t bar;
+    //millisecond unit
+    int update_rate;
+    struct timespec last_update;
+} progress_bar_t;
+
+void init_progress_bar(progress_bar_t * bar,int update_rate);
+
+void DisplayProgressBar(progress_bar_t * bar,size_t offset,size_t total,const char * filename, bool sync);
+
+#endif

p-server.c

@@ -52,15 +52,25 @@ static const int RESPONSE_REQUEST = 3;
 static const int RESPONSE_REQUEST = DEFAULT_RESPONSE_REQUEST;
 #endif
 
-#define USE_TRACE
+#ifdef USE_TRACE
-
 #include <sys/time.h>
 #include <time.h>
 #include "timerhelper.h"
+
 enum{
-    Trace_Timer_ID = CLOCK_REALTIME
+    Top_Trace_Timer_ID = CLOCK_REALTIME,
+    Bottom_Trace_Timer_ID = CLOCK_THREAD_CPUTIME_ID
 };
 
+static inline void report_resolution()
+{
+    struct timespec top_res,bottom_res;
+    clock_getres(Top_Trace_Timer_ID,&top_res);
+    clock_getres(Bottom_Trace_Timer_ID,&bottom_res);
+    fprintf(stderr,"top res: %ld, bottom res: %ld\n",top_res.tv_nsec,bottom_res.tv_nsec);
+}
+#endif
+
 /*========
  *Operation
  *========*/
@@ -243,6 +253,9 @@ int main(int argc, const char *argv[]){
         int d = parse_args(argc,argv,&binding_port_number);
         if(d != 0 ) return d;
     }
+    #ifdef USE_TRACE
+    report_resolution();
+    #endif
     sock = socket(AF_INET,SOCK_STREAM,0);
     atexit(safe_exit);
     if(sock < 0){
@@ -286,7 +299,7 @@ int main(int argc, const char *argv[]){
         char ip_buf[INET_ADDRSTRLEN];
         const char * msg;
         int retval = 0;
-        struct timespec ts,tsmiddle,tsend;
+        struct timespec ts_top_begin,ts_top_end, ts_bottom_begin, ts_bottom_end;
         if((csock = accept(sock, (struct sockaddr *)&client_addr,&client_addr_len)) < 0){
             free(buf);
             perror("accept error");
@@ -294,13 +307,14 @@ int main(int argc, const char *argv[]){
         }
         msg = inet_ntop(AF_INET,&client_addr.sin_addr,ip_buf,sizeof(ip_buf));
     #ifdef USE_TRACE
-        clock_gettime(Trace_Timer_ID,&ts);
+        clock_gettime(Top_Trace_Timer_ID,&ts_top_begin);
     #endif
         fprintf(stderr,"Connected on : %s:%d\n",msg == NULL ? "(null)" : msg , ntohs(client_addr.sin_port));
         pid = fork();
         if(pid == 0){
     #ifdef USE_TRACE
-            clock_gettime(Trace_Timer_ID,&tsmiddle);
+            clock_gettime(Top_Trace_Timer_ID,&ts_top_end);
+            clock_gettime(Bottom_Trace_Timer_ID,&ts_bottom_begin);
     #endif
             if((fd = read_request(csock,buf,bufsize)) > 0){
                 retval = send_response(csock,fd,buf,bufsize);
@@ -310,12 +324,10 @@ int main(int argc, const char *argv[]){
             if(close(csock) < 0)
                 perror("csock close error");
     #ifdef USE_TRACE
-            clock_gettime(Trace_Timer_ID,&tsend);
+            clock_gettime(Bottom_Trace_Timer_ID,&ts_bottom_end);
-            struct timespec tophalf = timespec_sub(tsmiddle,ts);
+            struct timespec tophalf = timespec_sub(ts_top_end,ts_top_begin);
-            struct timespec bottomhelf = timespec_sub(tsend,tsmiddle);
+            struct timespec bottomhelf = timespec_sub(ts_bottom_end,ts_bottom_end);
-            struct timespec resolution;
+            fprintf(stderr,"top: %ld ns, bottom: %ld ns\n",tophalf.tv_nsec,bottomhelf.tv_nsec);
-            clock_getres(Trace_Timer_ID,&resolution);
-            fprintf(stderr,"top: %ld ns, bottom: %ld ns, res: %ld\n",tophalf.tv_nsec,bottomhelf.tv_nsec,resolution.tv_nsec);
     #endif
             free(buf);
             return retval;

server.c

@@ -16,7 +16,7 @@
 
 #include "socket_wrapper.h"
 #include "simple_circular_buffer.h"
-#include "timerhelper.h"
+#include "display_bar.h"
 
 #ifndef DEFAULT_MAX_LISTEN_SOCKET
 static const int MAX_LISTEN_SOCKET = 16;
@@ -60,8 +60,35 @@ enum{
  MAX_THREAD_NUMBER = DEFAULT_MAX_THREAD_NUMBER
 #endif
 };
-#define USE_TRACE
+#ifdef SLOW_SERVER
-#define USE_NO_QUEUE
+//micro second unit
+static const int SLOW_SERVER_TIME = SLOW_SERVER;
+#endif
+//#define USE_TRACE
+#ifdef USE_TRACE
+#include "timerhelper.h"
+enum{
+    Top_Trace_Timer_ID = CLOCK_REALTIME,
+    Bottom_Trace_Timer_ID = CLOCK_THREAD_CPUTIME_ID
+};
+
+static inline void report_resolution()
+{
+    struct timespec top_res,bottom_res;
+    clock_getres(Top_Trace_Timer_ID,&top_res);
+    clock_getres(Bottom_Trace_Timer_ID,&bottom_res);
+    fprintf(stderr,"top res: %ld, bottom res: %ld\n",top_res.tv_nsec,bottom_res.tv_nsec);
+}
+#endif
+
+static bool use_gui = false;
+
+static inline void server_perror(const char * msg){
+    if(use_gui)
+        myd_perror(msg);
+    else
+        perror(msg);
+}
 
 /*========
  *Operation
@@ -80,11 +107,11 @@ int send_fail(int sock,const char * msg){
     res.error_msg_size = strlen(msg);
     //os will be combining if tcp_autocorking emabled.
     if(send(sock,&res,sizeof(res),0) < 0){
-        perror("error msg send");
+        server_perror("error msg send");
         return -1;
     }
     if (send(sock,msg,res.error_msg_size,0) < 0){
-        perror("error msg send");
+        server_perror("error msg send");
         return -1;
     }
     return 0;
@@ -100,7 +127,7 @@ int send_errno(int sock){
     r.file_size = 0;
     r.error_msg_size = 0;
     if(send(sock,&r,sizeof(r),0)){
-        perror("errno send");
+        server_perror("errno send");
         return -1;
     }
     return 0;
@@ -115,7 +142,7 @@ int read_request(int sock,uint8_t * buf,size_t bufsize){
     ssize_t n = recv_until_byte(sock,&p,sizeof(p),TIMEOUT);
     if (n < 0){
         if (n == -2) fprintf(stderr,"timeout!");
-        else perror("receive fail"); 
+        else server_perror("receive fail"); 
         return -1;
     }
     if(bufsize <= ((size_t)p.file_url_size) + sizeof(p) + 1){
@@ -132,7 +159,13 @@ int read_request(int sock,uint8_t * buf,size_t bufsize){
     }
     n = recv_until_byte(sock,buf,p.file_url_size,TIMEOUT);
     buf[p.file_url_size] = '\0';    //truncate
-    fprintf(stdout,"str size: %d, request %s\n",p.file_url_size,buf);
+    if(use_gui&&isatty_file(stdout)){
+        lock_scrolled();
+        add_scrolled_unlocked(1);
+        fprintf(stdout,"str size: %d, request %s\n",p.file_url_size,buf);
+        unlock_scrolled();
+    }
+    else fprintf(stdout,"str size: %d, request %s\n",p.file_url_size,buf);
     if(strchr((char *)buf,'/') != NULL){
         send_fail(sock,"Illegal character /");
         return -1;
@@ -154,6 +187,7 @@ int send_response(int sock,int fd, uint8_t * buf, size_t bufsize){
     struct stat st;
     off_t offset = 0;
     ssize_t readed = 0;
+    progress_bar_t pbar;
     r.res = RES_OK;
     r.err_number = 0;
     r.error_msg_size = 0;
@@ -165,33 +199,46 @@ int send_response(int sock,int fd, uint8_t * buf, size_t bufsize){
     }
     r.file_size = st.st_size;
     if(send(sock,&r,sizeof(r),0)<0){
-        perror("send fail");
+        server_perror("send fail");
         return -1;
     }
+    if(use_gui)
+        init_progress_bar(&pbar,10);
 #ifdef USE_SENDFILE
     while (r.file_size != offset)
     {
         size_t count = SEND_FILE_CHUNK_SIZE < (r.file_size - offset) ? SEND_FILE_CHUNK_SIZE : (r.file_size - offset);
         if((readed = sendfile(sock,fd,&offset,count)) < 0){
-            perror("send file fail");
+            server_perror("send file fail");
             return -1;
         }
+        if(use_gui)
+            DisplayProgressBar(&pbar,offset,r.file_size,"",false);
+        #ifdef SLOW_SERVER
+            usleep(SLOW_SERVER_TIME);
+        #endif
     }
 #else
     while (offset < r.file_size)
     {
         readed = bufsize < (r.file_size - offset) ? bufsize : r.file_size - offset;
         if(read(fd,buf,readed)<0){
-            perror("send response read fail");
+            server_perror("send response read fail");
             return -1;
         }
         if(send(sock,buf,readed,0)<0){
-            perror("send response send fail");
+            server_perror("send response send fail");
             return -1;
         }
         offset += readed;
+        if(use_gui)
+            DisplayProgressBar(&pbar,offset,r.file_size,"",false);
+    #ifdef SLOW_SERVER
+        usleep(SLOW_SERVER_TIME);
+    #endif
     }
-    
+    if(use_gui)
+        DisplayProgressBar(&pbar,offset,r.file_size,"",true);
 #endif
     return 0;
 }
@@ -199,7 +246,8 @@ const char * help(const char * n){
     const char * msg = "USASE : %s [Option] ...\n"
     "Options and arguments: \n"
     "-p port\t:set to port binding. couldn't set to 0\n"
-    "-h\t:print help message.\n";
+    "-h\t:print help message.\n"
+    "--progress_bar\t: show pretty progress bar";
     printf(msg,n);
     return msg;
 }
@@ -207,11 +255,9 @@ const char * help(const char * n){
 int parse_args(int argc,const char * argv[] , in_port_t * port){
     int pos = 1;
     const char * opt;
-    while (pos < argc)
+    while (pos < argc){
-    {
         opt = argv[pos++];
-        if (strcmp(opt,"-h") == 0 || strcmp(opt,"--help") == 0)
+        if (strcmp(opt,"-h") == 0 || strcmp(opt,"--help") == 0){
-        {
             help(argv[0]);
             return 0;
         }
@@ -229,18 +275,20 @@ int parse_args(int argc,const char * argv[] , in_port_t * port){
                 return 2; //failed to find argument.
             }
         }
+        else if(strcmp(opt,"--progress_bar") == 0){
+            use_gui = true;
+        }
+        else{
+            fprintf(stderr,"unknown option\n");
+            help(argv[0]);
+            return 2;
+        }
     }
     return 0;
 }
 //============
 //Simple Thread Pool
 //============
-#ifdef USE_TRACE
-enum{
-    Trace_Timer_ID = CLOCK_REALTIME
-};
-#endif
-
 #ifndef USE_NO_QUEUE
 typedef struct SharedState{
     //empty if less than 0
@@ -305,34 +353,39 @@ void * worker_proc(void * data){
     worker_argument_t * args = (worker_argument_t *)data;
     int fd, csock;
     #ifdef USE_TRACE
-    struct timespec ts,ts_middle,ts_end;
+    struct timespec ts_top_begin,ts_top_end, ts_bottom_begin, ts_bottom_end;
     #endif
     for(;;){
-
         pthread_mutex_lock(&globalState.sock_mutex);
         while (queue_isempty(&globalState.socks)){
             pthread_cond_wait(&globalState.ready,&globalState.sock_mutex);
         }
         csock = dequeue(&globalState.socks);
     #ifdef USE_TRACE
-        ts = dequeue(&globalState.trace_timer);
+        ts_top_begin = dequeue(&globalState.trace_timer);
     #endif
         pthread_mutex_unlock(&globalState.sock_mutex);
     #ifdef USE_TRACE    
-        clock_gettime(Trace_Timer_ID,&ts_middle);
+        clock_gettime(Top_Trace_Timer_ID,&ts_top_end);
+        clock_gettime(Bottom_Trace_Timer_ID,&ts_bottom_begin);
     #endif
         if((fd = read_request(csock,args->buf,args->bufsize)) > 0){
             send_response(csock,fd,args->buf,args->bufsize);
             close(fd);
         }
     #ifdef USE_TRACE
-        clock_gettime(Trace_Timer_ID,&ts_end);
+        clock_gettime(Bottom_Trace_Timer_ID,&ts_bottom_end);
-        struct timespec tophalf = timespec_sub(ts_middle,ts);
+        struct timespec tophalf = timespec_sub(ts_top_end,ts_top_end);
-        struct timespec bottomhelf = timespec_sub(ts_end,ts_middle);
+        struct timespec bottomhelf = timespec_sub(ts_bottom_end,ts_bottom_begin);
-        fprintf(stderr,"top : %ld ns, bottom : %ld ns\n",tophalf.tv_nsec,bottomhelf.tv_nsec);
+        if(use_gui&&isatty_file(stderr)){
+            lock_scrolled();
+            add_scrolled_unlocked(1);
+            fprintf(stderr,"top : %ld ns, bottom : %ld ns\n",tophalf.tv_nsec,bottomhelf.tv_nsec);
+            unlock_scrolled();
+        }
     #endif
         if(close(csock) < 0)
-            perror("csock close error");
+            server_perror("csock close error");
     }
     destory_worker_argument(args);
     return NULL;
@@ -344,22 +397,29 @@ void * worker_proc(void * data){
     int fd, csock;
     csock = args->csock;
     #ifdef USE_TRACE
-    struct timespec ts,ts_middle,ts_end;
+    struct timespec ts_top_begin,ts_top_end, ts_bottom_begin, ts_bottom_end;
-    ts = args->ts; 
+    ts_top_begin = args->ts; 
-    clock_gettime(Trace_Timer_ID,&ts_middle);
+    clock_gettime(Top_Trace_Timer_ID,&ts_top_end);
+    clock_gettime(Bottom_Trace_Timer_ID,&ts_bottom_begin);
     #endif
     if((fd = read_request(csock,args->buf,args->bufsize)) > 0){
         send_response(csock,fd,args->buf,args->bufsize);
         close(fd);
     }
     #ifdef USE_TRACE
-    clock_gettime(Trace_Timer_ID,&ts_end);
+    clock_gettime(Bottom_Trace_Timer_ID,&ts_bottom_end);
-    struct timespec tophalf = timespec_sub(ts_middle,ts);
+    struct timespec tophalf = timespec_sub(ts_top_end,ts_top_begin);
-    struct timespec bottomhelf = timespec_sub(ts_end,ts_middle);
+    struct timespec bottomhelf = timespec_sub(ts_bottom_end,ts_bottom_begin);
-    fprintf(stderr,"top : %ld ns, bottom : %ld ns\n",tophalf.tv_nsec,bottomhelf.tv_nsec);
+    if(use_gui&&isatty_file(stderr)){
+        lock_scrolled();
+        add_scrolled_unlocked(1);
+        fprintf(stderr,"top : %ld ns, bottom : %ld ns\n",tophalf.tv_nsec,bottomhelf.tv_nsec);
+        unlock_scrolled();
+    }
+    else fprintf(stderr,"top : %ld ns, bottom : %ld ns\n",tophalf.tv_nsec,bottomhelf.tv_nsec);
     #endif
     if(close(csock) < 0)
-        perror("csock close error");
+        server_perror("csock close error");
     destory_worker_argument(args);
     return NULL;
 }
@@ -382,17 +442,21 @@ int main(int argc, const char *argv[]){
         int d = parse_args(argc,argv,&binding_port_number);
         if(d != 0 ) return d;
     }
-    
+    if(use_gui)
+        ready_progress_bar();
+    #ifdef USE_TRACE
+        report_resolution();
+    #endif
     sock = socket(AF_INET,SOCK_STREAM,0);
     atexit(safe_exit);
     if(sock < 0){
-        perror("sock create fail");
+        server_perror("sock create fail");
         return 1;
     }
     else {
         int option = 1;
         if(setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,&option,sizeof(option)) < 0){
-            perror("setsockopt");
+            server_perror("setsockopt");
         }
     }
     bufsize = getBufferSizeFrom(sock);
@@ -412,17 +476,23 @@ int main(int argc, const char *argv[]){
     addr.sin_port = htons(binding_port_number);
 
     if(bind(sock, (struct sockaddr *)&addr,sizeof(addr)) < 0){
-        perror("bind failed");
+        server_perror("bind failed");
         return 1;
     } else {
         char ip_buf[INET_ADDRSTRLEN];
         const char * msg = inet_ntop(AF_INET,&addr.sin_addr,ip_buf,sizeof(ip_buf));
         assert(msg != NULL);
-        fprintf(stdout,"server bind on %s:%d\n",msg ,binding_port_number);
+        if(use_gui&&isatty_file(stdout)){
+            lock_scrolled();
+            add_scrolled_unlocked(1);
+            fprintf(stdout,"server bind on %s:%d\n",msg ,binding_port_number);
+            unlock_scrolled();
+        }
+        else fprintf(stdout,"server bind on %s:%d\n",msg ,binding_port_number);
     }
 
     if(listen(sock,MAX_LISTEN_SOCKET) < 0){
-        perror("listen failed");
+        server_perror("listen failed");
         return 1;
     }
 
@@ -430,10 +500,16 @@ int main(int argc, const char *argv[]){
     {
         char ip_buf[INET_ADDRSTRLEN];
         const char * msg = inet_ntop(AF_INET,&client_addr.sin_addr,ip_buf,sizeof(ip_buf));
-        fprintf(stdout,"Connected on : %s:%d\n",msg == NULL ? "(null)" : msg , ntohs(addr.sin_port));
+        if(use_gui&&isatty_file(stdout)){
+            lock_scrolled();
+            add_scrolled_unlocked(1);
+            fprintf(stdout,"Connected on : %s:%d\n",msg == NULL ? "(null)" : msg , ntohs(addr.sin_port));
+            unlock_scrolled();
+        }
+        else fprintf(stdout,"Connected on : %s:%d\n",msg == NULL ? "(null)" : msg , ntohs(addr.sin_port));
 #ifdef USE_TRACE
-        struct timespec ts;
+        struct timespec ts_top_begin;
-        clock_gettime(Trace_Timer_ID, &ts);    
+        clock_gettime(Top_Trace_Timer_ID, &ts_top_begin);    
 #endif
 #ifndef USE_NO_QUEUE
         for(;;){
@@ -450,7 +526,7 @@ int main(int argc, const char *argv[]){
             else {
                 enqueue(&globalState.socks,csock);
     #ifdef USE_TRACE
-                enqueue(&globalState.trace_timer,ts);    
+                enqueue(&globalState.trace_timer,ts_top_begin);    
     #endif
             }
             break;
@@ -461,7 +537,7 @@ int main(int argc, const char *argv[]){
         pthread_t thread_a;
         worker_argument_t * args = create_worker_argument(i++,bufsize,csock);
     #ifdef USE_TRACE
-        args->ts = ts;
+        args->ts = ts_top_begin;
     #endif
         pthread_create(&thread_a,NULL,worker_proc,args);
         pthread_detach(thread_a);