automatic calling

svn path=/trunk/externals/iem/iemnet/; revision=13259

6 files changed, 686 insertions, 613 deletions

diff --git a/Makefile b/Makefile
index ce9b4e5..26e52b3 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ SOURCES_linux =
 SOURCES_windows = 
 
 # .c source files that will be statically linked to _all_ objects
-HELPERSOURCES = shared.c
+HELPERSOURCES = iemnet.c
 
 
 # list all pd objects (i.e. myobject.pd) files here, and their helpfiles will
diff --git a/iemnet.c b/iemnet.c
index c58c54d..2f87248 100644
--- a/iemnet.c
+++ b/iemnet.c
@@ -1,12 +1,617 @@
-#include "iemnet.h"

-

-void tcpclient_setup(void);

-void tcpserver_setup(void);

-

-

-IEMNET_EXTERN void iemnet_setup(void) {

-tcpserver_setup();

-tcpclient_setup();

-

-

-}
\ No newline at end of file
+/* iemnet
+ *  copyright (c) 2010 IOhannes m zmölnig, IEM
+ */
+
+#include "iemnet.h"
+
+#include "s_stuff.h"
+
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include <sys/types.h>
+
+#ifdef _WIN32
+# include <winsock2.h>
+# include <ws2tcpip.h> /* for socklen_t */
+#else
+# include <sys/socket.h>
+#endif
+
+#include <pthread.h>
+
+
+//#define INBUFSIZE 4096L /* was 4096: size of receiving data buffer */
+#define INBUFSIZE 65536L /* was 4096: size of receiving data buffer */
+
+
+/* data handling */
+
+typedef struct _iemnet_floatlist {
+  t_atom*argv;
+  size_t argc;
+
+  size_t size; // real size (might be bigger than argc)
+} t_iemnet_floatlist;
+
+t_iemnet_floatlist*iemnet__floatlist_init(t_iemnet_floatlist*cl) {
+  unsigned int i;
+  if(NULL==cl)return NULL;
+  for(i=0; i<cl->size; i++)
+    SETFLOAT((cl->argv+i), 0.f);
+
+  return cl;
+}
+
+void iemnet__floatlist_destroy(t_iemnet_floatlist*cl) {
+  if(NULL==cl)return;
+  if(cl->argv) freebytes(cl->argv, sizeof(t_atom)*cl->size);
+  cl->argv=NULL;
+  cl->argc=0;
+  cl->size=0;
+
+  freebytes(cl, sizeof(t_iemnet_floatlist));
+}
+
+t_iemnet_floatlist*iemnet__floatlist_create(unsigned int size) {
+  t_iemnet_floatlist*result=(t_iemnet_floatlist*)getbytes(sizeof(t_iemnet_floatlist));
+  if(NULL==result)return NULL;
+
+  result->argv = (t_atom*)getbytes(size*sizeof(t_atom));
+  if(NULL==result->argv) {
+    iemnet__floatlist_destroy(result);
+    return NULL;
+  }
+
+  result->argc=size;
+  result->size=size;
+
+  result=iemnet__floatlist_init(result);
+
+  return result;
+}
+
+t_iemnet_floatlist*iemnet__floatlist_resize(t_iemnet_floatlist*cl, unsigned int size) {
+  t_atom*tmp;
+  if(size<=cl->size) {
+    cl->argc=size;
+    return cl;
+  }
+
+  tmp=(t_atom*)getbytes(size*sizeof(t_atom));
+  if(NULL==tmp) return NULL;
+
+  freebytes(cl->argv, sizeof(t_atom)*cl->size);
+
+  cl->argv=tmp;
+  cl->argc=cl->size=size;
+
+  cl=iemnet__floatlist_init(cl);
+
+  return cl;
+}
+
+
+
+void iemnet__chunk_destroy(t_iemnet_chunk*c) {
+  if(NULL==c)return;
+
+  if(c->data)freebytes(c->data, c->size*sizeof(unsigned char));
+
+  c->data=NULL;
+  c->size=0;
+
+  freebytes(c, sizeof(t_iemnet_chunk));
+}
+
+t_iemnet_chunk* iemnet__chunk_create_empty(int size) {
+  t_iemnet_chunk*result=(t_iemnet_chunk*)getbytes(sizeof(t_iemnet_chunk));
+  if(result) {
+    result->size=size;
+    result->data=(unsigned char*)getbytes(sizeof(unsigned char)*size); 
+
+    if(NULL == result->data) {
+      result->size=0;
+      iemnet__chunk_destroy(result);
+      return NULL;
+    }
+
+    memset(result->data, 0, result->size);
+  }
+  return result;
+}
+
+t_iemnet_chunk* iemnet__chunk_create_data(int size, unsigned char*data) {
+  t_iemnet_chunk*result=(t_iemnet_chunk*)getbytes(sizeof(t_iemnet_chunk));
+  if(result) {
+    result->size=size;
+    result->data=(unsigned char*)getbytes(sizeof(unsigned char)*size); 
+
+    if(NULL == result->data) {
+      result->size=0;
+      iemnet__chunk_destroy(result);
+      return NULL;
+    }
+
+    memcpy(result->data, data, result->size);
+  }
+  return result;
+}
+
+
+t_iemnet_chunk* iemnet__chunk_create_list(int argc, t_atom*argv) {
+  t_iemnet_chunk*result=(t_iemnet_chunk*)getbytes(sizeof(t_iemnet_chunk));
+  int i;
+  if(NULL==result)return NULL;
+
+  result->size=argc;
+  result->data=(unsigned char*)getbytes(sizeof(unsigned char)*argc);
+
+  if(NULL == result->data) {
+    result->size=0;
+    iemnet__chunk_destroy(result);
+    return NULL;
+  }
+
+  for(i=0; i<argc; i++) {
+    unsigned char c = atom_getint(argv);
+    result->data[i]=c;
+    argv++;
+  }
+
+  return result;
+}
+
+t_iemnet_chunk*iemnet__chunk_create_chunk(t_iemnet_chunk*c) {
+  t_iemnet_chunk*result=NULL;
+  if(NULL==c)return NULL;
+
+  result=(t_iemnet_chunk*)getbytes(sizeof(t_iemnet_chunk));
+
+  result->size=c->size;
+  result->data=(unsigned char*)getbytes(sizeof(unsigned char)*(result->size));
+  if(NULL == result->data) {
+    result->size=0;
+    iemnet__chunk_destroy(result);
+    return NULL;
+  }
+
+  memcpy(result->data, c->data, result->size);
+
+  return result;
+}
+
+
+t_iemnet_floatlist*iemnet__chunk2list(t_iemnet_chunk*c, t_iemnet_floatlist*dest) {
+  unsigned int i;
+  if(NULL==c)return NULL;
+  dest=iemnet__floatlist_resize(dest, c->size);
+  if(NULL==dest)return NULL;
+
+  for(i=0; i<c->size; i++) {
+    dest->argv[i].a_w.w_float = c->data[i];
+  }
+
+  return dest;
+}
+
+
+/* queue handling */
+
+/*
+ *   using code found at http://newsgroups.derkeiler.com/Archive/Comp/comp.programming.threads/2008-02/msg00502.html
+ */
+
+
+
+typedef struct _node {
+  struct _node* next;
+  t_iemnet_chunk*data;
+} t_node;
+
+typedef struct _queue {
+  t_node* head; /* = 0 */
+  t_node* tail; /* = 0 */
+  pthread_mutex_t mtx;
+  pthread_cond_t cond;
+
+  int done; // in cleanup state
+  int size;
+} t_queue;
+
+
+int queue_push(
+                      t_queue* const _this,
+                      t_iemnet_chunk* const data
+                      ) {
+  t_node* tail;
+  t_node* n=NULL;
+  int size=_this->size;
+
+  if(NULL == data) return size;
+  //fprintf(stderr, "pushing %d bytes\n", data->size);
+
+  n=(t_node*)getbytes(sizeof(t_node));
+
+  n->next = 0;
+  n->data = data;
+  pthread_mutex_lock(&_this->mtx);
+  if (! (tail = _this->tail)) {
+    _this->head = n;
+  } else {
+    tail->next = n;
+  }
+  _this->tail = n;
+
+  _this->size+=data->size;
+  size=_this->size;
+
+
+  //fprintf(stderr, "pushed %d bytes\n", data->size);
+
+  pthread_mutex_unlock(&_this->mtx);
+  pthread_cond_signal(&_this->cond);
+
+  return size;
+}
+
+t_iemnet_chunk* queue_pop_block(
+                   t_queue* const _this
+                   ) {
+  t_node* head=0;
+  t_iemnet_chunk*data=0;
+  pthread_mutex_lock(&_this->mtx);
+  while (! (head = _this->head)) {
+    if(_this->done) {
+      pthread_mutex_unlock(&_this->mtx);
+      return NULL;
+    }
+    else {
+      pthread_cond_wait(&_this->cond, &_this->mtx);
+    }
+  }
+
+  if (! (_this->head = head->next)) {
+    _this->tail = 0;
+  }
+  if(head && head->data) {
+    _this->size-=head->data->size;
+  }
+
+  pthread_mutex_unlock(&_this->mtx);
+  if(head) {
+    data=head->data;
+    freebytes(head, sizeof(t_node));
+    head=NULL;
+  }
+  return data;
+}
+
+t_iemnet_chunk* queue_pop_noblock(
+                   t_queue* const _this
+                   ) {
+  t_node* head=0;
+  t_iemnet_chunk*data=0;
+  pthread_mutex_lock(&_this->mtx);
+  if (! (head = _this->head)) {
+    // empty head
+    pthread_mutex_unlock(&_this->mtx);
+    return NULL;
+  }
+  if (! (_this->head = head->next)) {
+    _this->tail = 0;
+  }
+  if(head && head->data) {
+    _this->size-=head->data->size;
+  }
+
+  pthread_mutex_unlock(&_this->mtx);
+  if(head) {
+    data=head->data;
+    freebytes(head, sizeof(t_node));
+    head=NULL;
+  }
+  return data;
+}
+
+t_iemnet_chunk* queue_pop(t_queue* const _this) {
+  return queue_pop_block(_this);
+}
+
+
+void queue_finish(t_queue* q) {
+  if(NULL==q) 
+    return;
+  q->done=1;
+  pthread_cond_signal(&q->cond);
+}
+
+void queue_destroy(t_queue* q) {
+  t_iemnet_chunk*c=NULL;
+  if(NULL==q) 
+    return;
+
+  queue_finish(q);
+
+  /* remove all the chunks from the queue */
+  while(NULL!=(c=queue_pop_noblock(q))) {
+    iemnet__chunk_destroy(c);
+  }
+
+  q->head=NULL;
+  q->tail=NULL;
+
+  pthread_mutex_destroy(&q->mtx);
+  pthread_cond_destroy(&q->cond);
+
+  freebytes(q, sizeof(t_queue));
+  q=NULL;
+}
+
+t_queue* queue_create(void) {
+  static pthread_mutex_t mtx = PTHREAD_MUTEX_INITIALIZER;
+  static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+
+  t_queue*q=(t_queue*)getbytes(sizeof(t_queue));
+  if(NULL==q)return NULL;
+
+  q->head = NULL;
+  q->tail = NULL;
+
+  memcpy(&q->cond, &cond, sizeof(pthread_cond_t));
+  memcpy(&q->mtx , &mtx, sizeof(pthread_mutex_t));
+
+  q->done = 0;
+  q->size = 0;
+
+  return q;
+}
+
+
+
+
+ /* draft:
+  *   - there is a sender thread for each open connection
+  *   - the main thread just adds chunks to each sender threads processing queue
+  *   - the sender thread tries to send the queue as fast as possible
+  */
+
+struct _iemnet_sender {
+  pthread_t thread;
+
+  int sockfd; /* owned outside; must call iemnet__sender_destroy() before freeing socket yourself */
+  t_queue*queue;
+  int cont; // indicates whether we want to thread to continue or to terminate
+};
+
+/* the workhorse of the family */
+
+static int iemnet__sender_dosend(int sockfd, t_queue*q) {
+  t_iemnet_chunk*c=queue_pop(q);
+  if(c) {
+    unsigned char*data=c->data;
+    unsigned int size=c->size;
+    int result=-1;
+    //    fprintf(stderr, "sending %d bytes at %x to %d\n", size, data, sockfd);
+
+    result = send(sockfd, data, size, 0);
+    // shouldn't we do something with the result here?
+    iemnet__chunk_destroy(c);
+  } else {
+    return 0;
+  }
+  return 1;
+}
+
+static void*iemnet__sender_sendthread(void*arg) {
+  t_iemnet_sender*sender=(t_iemnet_sender*)arg;
+
+  int sockfd=sender->sockfd;
+  t_queue*q=sender->queue;
+
+  while(sender->cont) {
+    if(!iemnet__sender_dosend(sockfd, q))break;
+  }
+  //fprintf(stderr, "write thread terminated\n");
+  return NULL;
+}
+
+int iemnet__sender_send(t_iemnet_sender*s, t_iemnet_chunk*c) {
+  t_queue*q=s->queue;
+  int size=0;
+  if(q) {
+    t_iemnet_chunk*chunk=iemnet__chunk_create_chunk(c);
+    size = queue_push(q, chunk);
+  }
+  return size;
+}
+
+void iemnet__sender_destroy(t_iemnet_sender*s) {
+  s->cont=0;
+  queue_finish(s->queue);
+  s->sockfd = -1;
+  pthread_join(s->thread, NULL);
+  queue_destroy(s->queue);
+
+  freebytes(s, sizeof(t_iemnet_sender));
+  s=NULL;
+}
+t_iemnet_sender*iemnet__sender_create(int sock) {
+  t_iemnet_sender*result=(t_iemnet_sender*)getbytes(sizeof(t_iemnet_sender));
+  int res=0;
+
+  if(NULL==result)return NULL;
+
+  result->queue = queue_create();
+  result->sockfd = sock;
+  result->cont =1;
+
+  res=pthread_create(&result->thread, 0, iemnet__sender_sendthread, result);
+
+  if(0==res) {
+
+  } else {
+    // something went wrong
+  }
+
+  return result;
+}
+
+int iemnet__sender_getlasterror(t_iemnet_sender*x) {
+  x=NULL;
+#ifdef _WIN32
+  return WSAGetLastError();
+#endif
+  return errno;
+}
+
+
+int iemnet__sender_getsockopt(t_iemnet_sender*s, int level, int optname, void      *optval, socklen_t*optlen) {
+  int result=getsockopt(s->sockfd, level, optname, optval, optlen);
+  if(result!=0) {
+    post("%s: getsockopt returned %d", __FUNCTION__, iemnet__sender_getlasterror(s));
+  }
+  return result;
+}
+int iemnet__sender_setsockopt(t_iemnet_sender*s, int level, int optname, const void*optval, socklen_t optlen) {
+  int result=setsockopt(s->sockfd, level, optname, optval, optlen);
+  if(result!=0) {
+    post("%s: setsockopt returned %d", __FUNCTION__, iemnet__sender_getlasterror(s));
+  }
+  return result;
+
+}
+
+
+
+struct _iemnet_receiver {
+  pthread_t thread;
+  int sockfd; /* owned outside; you must call iemnet__receiver_destroy() before freeing socket yourself */
+  void*owner;
+  t_iemnet_chunk*data;
+  t_iemnet_receivecallback callback;
+  t_queue*queue;
+  int running;
+  t_clock *clock;
+  t_iemnet_floatlist*flist;
+};
+
+
+/* the workhorse of the family */
+static void*iemnet__receiver_readthread(void*arg) {
+  int result = 0;
+  t_iemnet_receiver*receiver=(t_iemnet_receiver*)arg;
+
+  int sockfd=receiver->sockfd;
+  t_queue*q=receiver->queue;
+
+  unsigned char data[INBUFSIZE];
+  unsigned int size=INBUFSIZE;
+
+  unsigned int i=0;
+  for(i=0; i<size; i++)data[i]=0;
+  receiver->running=1;
+  while(1) {
+    t_iemnet_chunk*c=NULL;
+    //fprintf(stderr, "reading %d bytes...\n", size);
+    result = recv(sockfd, data, size, 0);
+    //fprintf(stderr, "read %d bytes...\n", result);
+
+    if(result<=0)break;
+    c= iemnet__chunk_create_data(result, data);
+
+    queue_push(q, c);
+
+    if(receiver->clock)clock_delay(receiver->clock, 0);
+  }
+
+
+  if(result>=0)
+    if(receiver->clock)clock_delay(receiver->clock, 0);
+
+  receiver->running=0;
+
+  //fprintf(stderr, "read thread terminated\n");
+  return NULL;
+}
+
+static void iemnet__receiver_tick(t_iemnet_receiver *x)
+{
+  // received data
+  t_iemnet_chunk*c=queue_pop_noblock(x->queue);
+  while(NULL!=c) {
+    x->flist = iemnet__chunk2list(c, x->flist);
+    (x->callback)(x->owner, x->sockfd, x->flist->argc, x->flist->argv);
+    iemnet__chunk_destroy(c);
+    c=queue_pop_noblock(x->queue);
+  }
+  if(!x->running) {
+    // read terminated
+    x->callback(x->owner, x->sockfd, 0, NULL);
+  }
+}
+
+
+t_iemnet_receiver*iemnet__receiver_create(int sock, void*owner, t_iemnet_receivecallback callback) {
+  t_iemnet_receiver*rec=(t_iemnet_receiver*)getbytes(sizeof(t_iemnet_receiver));
+  //fprintf(stderr, "new receiver for %d\t%x\t%x\n", sock, owner, callback);
+  if(rec) {
+    t_iemnet_chunk*data=iemnet__chunk_create_empty(INBUFSIZE);
+    int res=0;
+    if(NULL==data) {
+      iemnet__receiver_destroy(rec);
+      return NULL;
+    }
+    rec->sockfd=sock;
+    rec->owner=owner;
+    rec->data=data;
+    rec->callback=callback;
+    rec->flist=iemnet__floatlist_create(1024);
+
+    rec->queue = queue_create();
+    rec->clock = clock_new(rec, (t_method)iemnet__receiver_tick);
+    rec->running=1;
+    res=pthread_create(&rec->thread, 0, iemnet__receiver_readthread, rec);
+  }
+  //fprintf(stderr, "new receiver created\n");
+
+  return rec;
+}
+void iemnet__receiver_destroy(t_iemnet_receiver*rec) {
+  if(NULL==rec)return;
+  if(rec->data)iemnet__chunk_destroy(rec->data);
+  if(rec->flist)iemnet__floatlist_destroy(rec->flist);
+  clock_free(rec->clock);
+  rec->clock=NULL;
+
+  shutdown(rec->sockfd, 2); /* needed on linux, since the recv won't shutdown on sys_closesocket() alone */
+  sys_closesocket(rec->sockfd); 
+
+  rec->sockfd=0;
+  pthread_join(rec->thread, NULL);
+  rec->owner=NULL;
+  rec->data=NULL;
+  rec->callback=NULL;
+  rec->clock=NULL;
+  rec->flist=NULL;
+
+  freebytes(rec, sizeof(t_iemnet_receiver));
+  rec=NULL;
+}
+
+
+
+
+
+
+
+
+
+
+
+
+IEMNET_EXTERN void iemnet_setup(void) {
+
+
+}
diff --git a/iemnet.h b/iemnet.h
index 6bc7190..58d98bb 100644
--- a/iemnet.h
+++ b/iemnet.h
@@ -1,11 +1,43 @@
+/* *********************************************+
+ * iemnet
+ *     networking for Pd
+ *
+ *  (c) 2010 IOhannes m zmölnig
+ *           Institute of Electronic Music and Acoustics (IEM)
+ *           University of Music and Dramatic Arts (KUG), Graz, Austria
+ *
+ * based on net/ library by Martin Peach
+ * based on maxlib by Olaf Matthes
+ */
+
+/* ---------------------------------------------------------------------------- */
+
+/* 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 2               */
+/* 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, write to the Free Software                  */
+/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.  */
+/*                                                                              */
+
+/* ---------------------------------------------------------------------------- */
+
+#ifndef INCLUDE_IEMNET_H_
+#define INCLUDE_IEMNET_H_
+
 #include "m_pd.h"
 
 #ifdef _WIN32
-# define IEMNET_EXTERN __declspec(dllexport) extern
 # include <winsock2.h>
 # include <ws2tcpip.h>
 #else
-# define IEMNET_EXTERN extern
 # include <sys/socket.h>
 #endif
 
@@ -46,3 +78,23 @@ typedef void (*t_iemnet_receivecallback)(void*x, int sockfd, int argc, t_atom*ar
  */
 t_iemnet_receiver*iemnet__receiver_create(int sock, void*owner, t_iemnet_receivecallback callback);
 void iemnet__receiver_destroy(t_iemnet_receiver*);
+
+
+#if defined(_MSC_VER)
+# define IEMNET_EXTERN __declspec(dllexport) extern
+# define CCALL __cdecl
+# pragma section(".CRT$XCU",read)
+# define IEMNET_INITIALIZER(f) \
+   static void __cdecl f(void); \
+   __declspec(allocate(".CRT$XCU")) void (__cdecl*f##_)(void) = f; \
+   static void __cdecl f(void)
+#elif defined(__GNUC__)
+# define IEMNET_EXTERN extern
+# define CCALL
+# define IEMNET_INITIALIZER(f) \
+  static void autoinit ## f(void) __attribute__((constructor)); \
+  static void autoinit ## f(void) { f(); }
+#endif
+
+
+#endif /* INCLUDE_IEMNET_H_ */
diff --git a/shared.c b/shared.c
deleted file mode 100644
index 8ed2111..0000000
--- a/shared.c
+++ /dev/null
@@ -1,596 +0,0 @@
-/* queue.c
- *  copyright (c) 2010 IOhannes m zmölnig, IEM
- *   using code found at http://newsgroups.derkeiler.com/Archive/Comp/comp.programming.threads/2008-02/msg00502.html
- */
-
-
-#include "iemnet.h"
-
-#include "s_stuff.h"
-
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-
-#include <sys/types.h>
-
-#ifdef _WIN32
-# include <winsock2.h>
-# include <ws2tcpip.h> /* for socklen_t */
-#else
-# include <sys/socket.h>
-#endif
-
-#include <pthread.h>
-
-
-//#define INBUFSIZE 4096L /* was 4096: size of receiving data buffer */
-#define INBUFSIZE 65536L /* was 4096: size of receiving data buffer */
-
-
-/* data handling */
-
-typedef struct _iemnet_floatlist {
-  t_atom*argv;
-  size_t argc;
-
-  size_t size; // real size (might be bigger than argc)
-} t_iemnet_floatlist;
-
-t_iemnet_floatlist*iemnet__floatlist_init(t_iemnet_floatlist*cl) {
-  unsigned int i;
-  if(NULL==cl)return NULL;
-  for(i=0; i<cl->size; i++)
-    SETFLOAT((cl->argv+i), 0.f);
-
-  return cl;
-}
-
-void iemnet__floatlist_destroy(t_iemnet_floatlist*cl) {
-  if(NULL==cl)return;
-  if(cl->argv) freebytes(cl->argv, sizeof(t_atom)*cl->size);
-  cl->argv=NULL;
-  cl->argc=0;
-  cl->size=0;
-
-  freebytes(cl, sizeof(t_iemnet_floatlist));
-}
-
-t_iemnet_floatlist*iemnet__floatlist_create(unsigned int size) {
-  t_iemnet_floatlist*result=(t_iemnet_floatlist*)getbytes(sizeof(t_iemnet_floatlist));
-  if(NULL==result)return NULL;
-
-  result->argv = (t_atom*)getbytes(size*sizeof(t_atom));
-  if(NULL==result->argv) {
-    iemnet__floatlist_destroy(result);
-    return NULL;
-  }
-
-  result->argc=size;
-  result->size=size;
-
-  result=iemnet__floatlist_init(result);
-
-  return result;
-}
-
-t_iemnet_floatlist*iemnet__floatlist_resize(t_iemnet_floatlist*cl, unsigned int size) {
-  t_atom*tmp;
-  if(size<=cl->size) {
-    cl->argc=size;
-    return cl;
-  }
-
-  tmp=(t_atom*)getbytes(size*sizeof(t_atom));
-  if(NULL==tmp) return NULL;
-
-  freebytes(cl->argv, sizeof(t_atom)*cl->size);
-
-  cl->argv=tmp;
-  cl->argc=cl->size=size;
-
-  cl=iemnet__floatlist_init(cl);
-
-  return cl;
-}
-
-
-
-void iemnet__chunk_destroy(t_iemnet_chunk*c) {
-  if(NULL==c)return;
-
-  if(c->data)freebytes(c->data, c->size*sizeof(unsigned char));
-
-  c->data=NULL;
-  c->size=0;
-
-  freebytes(c, sizeof(t_iemnet_chunk));
-}
-
-t_iemnet_chunk* iemnet__chunk_create_empty(int size) {
-  t_iemnet_chunk*result=(t_iemnet_chunk*)getbytes(sizeof(t_iemnet_chunk));
-  if(result) {
-    result->size=size;
-    result->data=(unsigned char*)getbytes(sizeof(unsigned char)*size); 
-
-    if(NULL == result->data) {
-      result->size=0;
-      iemnet__chunk_destroy(result);
-      return NULL;
-    }
-
-    memset(result->data, 0, result->size);
-  }
-  return result;
-}
-
-t_iemnet_chunk* iemnet__chunk_create_data(int size, unsigned char*data) {
-  t_iemnet_chunk*result=(t_iemnet_chunk*)getbytes(sizeof(t_iemnet_chunk));
-  if(result) {
-    result->size=size;
-    result->data=(unsigned char*)getbytes(sizeof(unsigned char)*size); 
-
-    if(NULL == result->data) {
-      result->size=0;
-      iemnet__chunk_destroy(result);
-      return NULL;
-    }
-
-    memcpy(result->data, data, result->size);
-  }
-  return result;
-}
-
-
-t_iemnet_chunk* iemnet__chunk_create_list(int argc, t_atom*argv) {
-  t_iemnet_chunk*result=(t_iemnet_chunk*)getbytes(sizeof(t_iemnet_chunk));
-  int i;
-  if(NULL==result)return NULL;
-
-  result->size=argc;
-  result->data=(unsigned char*)getbytes(sizeof(unsigned char)*argc);
-
-  if(NULL == result->data) {
-    result->size=0;
-    iemnet__chunk_destroy(result);
-    return NULL;
-  }
-
-  for(i=0; i<argc; i++) {
-    unsigned char c = atom_getint(argv);
-    result->data[i]=c;
-    argv++;
-  }
-
-  return result;
-}
-
-t_iemnet_chunk*iemnet__chunk_create_chunk(t_iemnet_chunk*c) {
-  t_iemnet_chunk*result=NULL;
-  if(NULL==c)return NULL;
-
-  result=(t_iemnet_chunk*)getbytes(sizeof(t_iemnet_chunk));
-
-  result->size=c->size;
-  result->data=(unsigned char*)getbytes(sizeof(unsigned char)*(result->size));
-  if(NULL == result->data) {
-    result->size=0;
-    iemnet__chunk_destroy(result);
-    return NULL;
-  }
-
-  memcpy(result->data, c->data, result->size);
-
-  return result;
-}
-
-
-t_iemnet_floatlist*iemnet__chunk2list(t_iemnet_chunk*c, t_iemnet_floatlist*dest) {
-  unsigned int i;
-  if(NULL==c)return NULL;
-  dest=iemnet__floatlist_resize(dest, c->size);
-  if(NULL==dest)return NULL;
-
-  for(i=0; i<c->size; i++) {
-    dest->argv[i].a_w.w_float = c->data[i];
-  }
-
-  return dest;
-}
-
-
-/* queue handling */
-typedef struct _node {
-  struct _node* next;
-  t_iemnet_chunk*data;
-} t_node;
-
-typedef struct _queue {
-  t_node* head; /* = 0 */
-  t_node* tail; /* = 0 */
-  pthread_mutex_t mtx;
-  pthread_cond_t cond;
-
-  int done; // in cleanup state
-  int size;
-} t_queue;
-
-
-int queue_push(
-                      t_queue* const _this,
-                      t_iemnet_chunk* const data
-                      ) {
-  t_node* tail;
-  t_node* n=NULL;
-  int size=_this->size;
-
-  if(NULL == data) return size;
-  //fprintf(stderr, "pushing %d bytes\n", data->size);
-
-  n=(t_node*)getbytes(sizeof(t_node));
-
-  n->next = 0;
-  n->data = data;
-  pthread_mutex_lock(&_this->mtx);
-  if (! (tail = _this->tail)) {
-    _this->head = n;
-  } else {
-    tail->next = n;
-  }
-  _this->tail = n;
-
-  _this->size+=data->size;
-  size=_this->size;
-
-
-  //fprintf(stderr, "pushed %d bytes\n", data->size);
-
-  pthread_mutex_unlock(&_this->mtx);
-  pthread_cond_signal(&_this->cond);
-
-  return size;
-}
-
-t_iemnet_chunk* queue_pop_block(
-                   t_queue* const _this
-                   ) {
-  t_node* head=0;
-  t_iemnet_chunk*data=0;
-  pthread_mutex_lock(&_this->mtx);
-  while (! (head = _this->head)) {
-    if(_this->done) {
-      pthread_mutex_unlock(&_this->mtx);
-      return NULL;
-    }
-    else {
-      pthread_cond_wait(&_this->cond, &_this->mtx);
-    }
-  }
-
-  if (! (_this->head = head->next)) {
-    _this->tail = 0;
-  }
-  if(head && head->data) {
-    _this->size-=head->data->size;
-  }
-
-  pthread_mutex_unlock(&_this->mtx);
-  if(head) {
-    data=head->data;
-    freebytes(head, sizeof(t_node));
-    head=NULL;
-  }
-  return data;
-}
-
-t_iemnet_chunk* queue_pop_noblock(
-                   t_queue* const _this
-                   ) {
-  t_node* head=0;
-  t_iemnet_chunk*data=0;
-  pthread_mutex_lock(&_this->mtx);
-  if (! (head = _this->head)) {
-    // empty head
-    pthread_mutex_unlock(&_this->mtx);
-    return NULL;
-  }
-  if (! (_this->head = head->next)) {
-    _this->tail = 0;
-  }
-  if(head && head->data) {
-    _this->size-=head->data->size;
-  }
-
-  pthread_mutex_unlock(&_this->mtx);
-  if(head) {
-    data=head->data;
-    freebytes(head, sizeof(t_node));
-    head=NULL;
-  }
-  return data;
-}
-
-t_iemnet_chunk* queue_pop(t_queue* const _this) {
-  return queue_pop_block(_this);
-}
-
-
-void queue_finish(t_queue* q) {
-  if(NULL==q) 
-    return;
-  q->done=1;
-  pthread_cond_signal(&q->cond);
-}
-
-void queue_destroy(t_queue* q) {
-  t_iemnet_chunk*c=NULL;
-  if(NULL==q) 
-    return;
-
-  queue_finish(q);
-
-  /* remove all the chunks from the queue */
-  while(NULL!=(c=queue_pop_noblock(q))) {
-    iemnet__chunk_destroy(c);
-  }
-
-  q->head=NULL;
-  q->tail=NULL;
-
-  pthread_mutex_destroy(&q->mtx);
-  pthread_cond_destroy(&q->cond);
-
-  freebytes(q, sizeof(t_queue));
-  q=NULL;
-}
-
-t_queue* queue_create(void) {
-  static pthread_mutex_t mtx = PTHREAD_MUTEX_INITIALIZER;
-  static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
-
-  t_queue*q=(t_queue*)getbytes(sizeof(t_queue));
-  if(NULL==q)return NULL;
-
-  q->head = NULL;
-  q->tail = NULL;
-
-  memcpy(&q->cond, &cond, sizeof(pthread_cond_t));
-  memcpy(&q->mtx , &mtx, sizeof(pthread_mutex_t));
-
-  q->done = 0;
-  q->size = 0;
-
-  return q;
-}
-
-
-
-
- /* draft:
-  *   - there is a sender thread for each open connection
-  *   - the main thread just adds chunks to each sender threads processing queue
-  *   - the sender thread tries to send the queue as fast as possible
-  */
-
-struct _iemnet_sender {
-  pthread_t thread;
-
-  int sockfd; /* owned outside; must call iemnet__sender_destroy() before freeing socket yourself */
-  t_queue*queue;
-  int cont; // indicates whether we want to thread to continue or to terminate
-};
-
-/* the workhorse of the family */
-
-static int iemnet__sender_dosend(int sockfd, t_queue*q) {
-  t_iemnet_chunk*c=queue_pop(q);
-  if(c) {
-    unsigned char*data=c->data;
-    unsigned int size=c->size;
-    int result=-1;
-    //    fprintf(stderr, "sending %d bytes at %x to %d\n", size, data, sockfd);
-
-    result = send(sockfd, data, size, 0);
-    // shouldn't we do something with the result here?
-    iemnet__chunk_destroy(c);
-  } else {
-    return 0;
-  }
-  return 1;
-}
-
-static void*iemnet__sender_sendthread(void*arg) {
-  t_iemnet_sender*sender=(t_iemnet_sender*)arg;
-
-  int sockfd=sender->sockfd;
-  t_queue*q=sender->queue;
-
-  while(sender->cont) {
-    if(!iemnet__sender_dosend(sockfd, q))break;
-  }
-  //fprintf(stderr, "write thread terminated\n");
-  return NULL;
-}
-
-int iemnet__sender_send(t_iemnet_sender*s, t_iemnet_chunk*c) {
-  t_queue*q=s->queue;
-  int size=0;
-  if(q) {
-    t_iemnet_chunk*chunk=iemnet__chunk_create_chunk(c);
-    size = queue_push(q, chunk);
-  }
-  return size;
-}
-
-void iemnet__sender_destroy(t_iemnet_sender*s) {
-  s->cont=0;
-  queue_finish(s->queue);
-  s->sockfd = -1;
-  pthread_join(s->thread, NULL);
-  queue_destroy(s->queue);
-
-  freebytes(s, sizeof(t_iemnet_sender));
-  s=NULL;
-}
-t_iemnet_sender*iemnet__sender_create(int sock) {
-  t_iemnet_sender*result=(t_iemnet_sender*)getbytes(sizeof(t_iemnet_sender));
-  int res=0;
-
-  if(NULL==result)return NULL;
-
-  result->queue = queue_create();
-  result->sockfd = sock;
-  result->cont =1;
-
-  res=pthread_create(&result->thread, 0, iemnet__sender_sendthread, result);
-
-  if(0==res) {
-
-  } else {
-    // something went wrong
-  }
-
-  return result;
-}
-
-int iemnet__sender_getlasterror(t_iemnet_sender*x) {
-  x=NULL;
-#ifdef _WIN32
-  return WSAGetLastError();
-#endif
-  return errno;
-}
-
-
-int iemnet__sender_getsockopt(t_iemnet_sender*s, int level, int optname, void      *optval, socklen_t*optlen) {
-  int result=getsockopt(s->sockfd, level, optname, optval, optlen);
-  if(result!=0) {
-    post("%s: getsockopt returned %d", __FUNCTION__, iemnet__sender_getlasterror(s));
-  }
-  return result;
-}
-int iemnet__sender_setsockopt(t_iemnet_sender*s, int level, int optname, const void*optval, socklen_t optlen) {
-  int result=setsockopt(s->sockfd, level, optname, optval, optlen);
-  if(result!=0) {
-    post("%s: setsockopt returned %d", __FUNCTION__, iemnet__sender_getlasterror(s));
-  }
-  return result;
-
-}
-
-
-
-struct _iemnet_receiver {
-  pthread_t thread;
-  int sockfd; /* owned outside; you must call iemnet__receiver_destroy() before freeing socket yourself */
-  void*owner;
-  t_iemnet_chunk*data;
-  t_iemnet_receivecallback callback;
-  t_queue*queue;
-  int running;
-  t_clock *clock;
-  t_iemnet_floatlist*flist;
-};
-
-
-/* the workhorse of the family */
-static void*iemnet__receiver_readthread(void*arg) {
-  int result = 0;
-  t_iemnet_receiver*receiver=(t_iemnet_receiver*)arg;
-
-  int sockfd=receiver->sockfd;
-  t_queue*q=receiver->queue;
-
-  unsigned char data[INBUFSIZE];
-  unsigned int size=INBUFSIZE;
-
-  unsigned int i=0;
-  for(i=0; i<size; i++)data[i]=0;
-  receiver->running=1;
-  while(1) {
-    t_iemnet_chunk*c=NULL;
-    //fprintf(stderr, "reading %d bytes...\n", size);
-    result = recv(sockfd, data, size, 0);
-    //fprintf(stderr, "read %d bytes...\n", result);
-
-    if(result<=0)break;
-    c= iemnet__chunk_create_data(result, data);
-
-    queue_push(q, c);
-
-    if(receiver->clock)clock_delay(receiver->clock, 0);
-  }
-
-
-  if(result>=0)
-    if(receiver->clock)clock_delay(receiver->clock, 0);
-
-  receiver->running=0;
-
-  //fprintf(stderr, "read thread terminated\n");
-  return NULL;
-}
-
-static void iemnet__receiver_tick(t_iemnet_receiver *x)
-{
-  // received data
-  t_iemnet_chunk*c=queue_pop_noblock(x->queue);
-  while(NULL!=c) {
-    x->flist = iemnet__chunk2list(c, x->flist);
-    (x->callback)(x->owner, x->sockfd, x->flist->argc, x->flist->argv);
-    iemnet__chunk_destroy(c);
-    c=queue_pop_noblock(x->queue);
-  }
-  if(!x->running) {
-    // read terminated
-    x->callback(x->owner, x->sockfd, 0, NULL);
-  }
-}
-
-
-t_iemnet_receiver*iemnet__receiver_create(int sock, void*owner, t_iemnet_receivecallback callback) {
-  t_iemnet_receiver*rec=(t_iemnet_receiver*)getbytes(sizeof(t_iemnet_receiver));
-  //fprintf(stderr, "new receiver for %d\t%x\t%x\n", sock, owner, callback);
-  if(rec) {
-    t_iemnet_chunk*data=iemnet__chunk_create_empty(INBUFSIZE);
-    int res=0;
-    if(NULL==data) {
-      iemnet__receiver_destroy(rec);
-      return NULL;
-    }
-    rec->sockfd=sock;
-    rec->owner=owner;
-    rec->data=data;
-    rec->callback=callback;
-    rec->flist=iemnet__floatlist_create(1024);
-
-    rec->queue = queue_create();
-    rec->clock = clock_new(rec, (t_method)iemnet__receiver_tick);
-    rec->running=1;
-    res=pthread_create(&rec->thread, 0, iemnet__receiver_readthread, rec);
-  }
-  //fprintf(stderr, "new receiver created\n");
-
-  return rec;
-}
-void iemnet__receiver_destroy(t_iemnet_receiver*rec) {
-  if(NULL==rec)return;
-  if(rec->data)iemnet__chunk_destroy(rec->data);
-  if(rec->flist)iemnet__floatlist_destroy(rec->flist);
-  clock_free(rec->clock);
-  rec->clock=NULL;
-
-  shutdown(rec->sockfd, 2); /* needed on linux, since the recv won't shutdown on sys_closesocket() alone */
-  sys_closesocket(rec->sockfd); 
-
-  rec->sockfd=0;
-  pthread_join(rec->thread, NULL);
-  rec->owner=NULL;
-  rec->data=NULL;
-  rec->callback=NULL;
-  rec->clock=NULL;
-  rec->flist=NULL;
-
-  freebytes(rec, sizeof(t_iemnet_receiver));
-  rec=NULL;
-}
diff --git a/tcpclient.c b/tcpclient.c
index 42fe2e0..23019d0 100644
--- a/tcpclient.c
+++ b/tcpclient.c
@@ -247,6 +247,8 @@ static void tcpclient_free(t_tcpclient *x)
 
 IEMNET_EXTERN void tcpclient_setup(void)
 {
+  static int again=0; if(again)return; again=1;
+
   tcpclient_class = class_new(gensym(objName), (t_newmethod)tcpclient_new,
                               (t_method)tcpclient_free,
                               sizeof(t_tcpclient), 0, A_DEFFLOAT, 0);
@@ -261,4 +263,10 @@ IEMNET_EXTERN void tcpclient_setup(void)
   post("        based on mrpeach/net, based on maxlib");
 }
 
+
+IEMNET_INITIALIZER(tcpclient_setup);
+
+
+
+
 /* end of tcpclient.c */
diff --git a/tcpserver.c b/tcpserver.c
index 74e8211..52067a6 100644
--- a/tcpserver.c
+++ b/tcpserver.c
@@ -414,11 +414,12 @@ static void tcpserver_free(t_tcpserver *x)
       sys_rmpollfn(x->x_connectsocket);
       sys_closesocket(x->x_connectsocket);
     }
-
 }
 
-IEMNET_EXTERN void tcpserver_setup(void)
+IEMNET_EXTERN void  tcpserver_setup(void)
 {
+  static int again=0; if(again)return; again=1;
+
   tcpserver_class = class_new(gensym(objName),(t_newmethod)tcpserver_new, (t_method)tcpserver_free,
                               sizeof(t_tcpserver), 0, A_DEFFLOAT, 0);
   class_addmethod(tcpserver_class, (t_method)tcpserver_disconnect_client, gensym("disconnectclient"), A_DEFFLOAT, 0);
@@ -439,4 +440,7 @@ IEMNET_EXTERN void tcpserver_setup(void)
   post("        based on mrpeach/net, based on maxlib");
 }
 
+IEMNET_INITIALIZER(tcpserver_setup);
+
+
 /* end of tcpserver.c */