*** empty log message ***

lib/Components/ExtensionClass/Sync.c

+/***********************************************************
+     Copyright 
+
+       Copyright 1997 Digital Creations, L.L.C., 910 Princess Anne
+       Street, Suite 300, Fredericksburg, Virginia 22401 U.S.A. All
+       rights reserved.  Copyright in this software is owned by DCLC,
+       unless otherwise indicated.  Note that any product, process or
+       technology described in this software may be the subject of
+       other Intellectual Property rights reserved by Digital
+       Creations, L.C. and are not licensed hereunder.
+
+     Trademarks 
+
+       Digital Creations & DCLC, are trademarks of Digital Creations, L.C..
+       All other trademarks are owned by their respective companies. 
+
+     No Warranty 
+
+       The software is provided "as is" without warranty of any kind,
+       either express or implied, including, but not limited to, the
+       implied warranties of merchantability, fitness for a particular
+       purpose, or non-infringement. This software could include
+       technical inaccuracies or typographical errors. Changes are
+       periodically made to the software; these changes will be
+       incorporated in new editions of the software. DCLC may make
+       improvements and/or changes in this software at any time
+       without notice.
+
+     Limitation Of Liability 
+
+       In no event will DCLC be liable for direct, indirect, special,
+       incidental, economic, cover, or consequential damages arising
+       out of the use of or inability to use this software even if
+       advised of the possibility of such damages. Some states do not
+       allow the exclusion or limitation of implied warranties or
+       limitation of liability for incidental or consequential
+       damages, so the above limitation or exclusion may not apply to
+       you.
+
+    If you have questions regarding this software,
+    contact:
+   
+      Digital Creations L.L.C.  
+      info@digicool.com
+      (540) 371-6909
+
+******************************************************************/
+
+
+static char Sync_module_documentation[] = 
+""
+"\n$Id: Sync.c,v 1.1 1997/09/18 20:36:37 jim Exp $"
+;
+
+#include "ExtensionClass.h"
+
+static PyObject *ErrorObject;
+
+/* ----------------------------------------------------- */
+
+static void PyVar_Assign(PyObject **v, PyObject *e) { Py_XDECREF(*v); *v=e;}
+#define ASSIGN(V,E) PyVar_Assign(&(V),(E))
+#define UNLESS(E) if(!(E))
+#define UNLESS_ASSIGN(V,E) ASSIGN(V,E); UNLESS(V)
+#define OBJECT(O) ((PyObject*)(O))
+
+PyObject *lockstr, *aqstr, *restr, *newlock;
+
+static PyObject *
+Synchronized___call_method__(PyObject *self, PyObject *args)
+{
+  PyObject *f, *a, *k=0, *l=0, *aq=0, *t, *v, *tb, *r;
+  UNLESS(PyArg_ParseTuple(args, "OO|O", &f, &a, &k)) return NULL;
+
+  UNLESS(l=PyObject_GetAttr(self, lockstr))
+    {
+      PyErr_Clear();
+      UNLESS(l=PyObject_CallObject(newlock, NULL)) return NULL;
+      if(PyObject_SetAttr(self, lockstr, l) < 0) goto err;
+    }
+
+  UNLESS(aq=PyObject_GetAttr(l, aqstr)) goto err;
+  UNLESS_ASSIGN(aq,PyObject_CallObject(aq,NULL)) goto err;
+
+  if(k) r=PyEval_CallObjectWithKeywords(f,a,k);
+  else  r=PyObject_CallObject(f,a);
+
+  PyErr_Fetch(&t, &v, &tb);
+
+  ASSIGN(aq,PyObject_GetAttr(l, restr));
+  if(aq) ASSIGN(aq,PyObject_CallObject(aq,NULL));
+
+  Py_XDECREF(aq);
+  Py_DECREF(l);
+
+  PyErr_Restore(t, v, tb);
+
+  return r;
+
+err:
+  Py_DECREF(l);
+  return NULL;
+}
+
+
+static struct PyMethodDef Synchronized_methods[] = {
+  {"__call_method__", (PyCFunction)Synchronized___call_method__, METH_VARARGS,
+   "Call a method by first getting a thread lock"
+  },
+  {NULL,		NULL}		/* sentinel */
+};
+
+/* List of methods defined in the module */
+
+static struct PyMethodDef Module_Level__methods[] = {
+  
+  {NULL, (PyCFunction)NULL, 0, NULL}		/* sentinel */
+};
+
+/* Initialization function for the module (*must* be called initSync) */
+
+void
+initSync()
+{
+  PyObject *m, *d;
+  char *rev="$Revision: 1.1 $";
+  PURE_MIXIN_CLASS(Synchronized,
+		   "Mix-in class that provides synchonization of method calls\n"
+		   "\n"
+		   "Only one thread is allowed to call a synchronized \n"
+		   "object's methods.\n",
+		   Synchronized_methods);
+
+  UNLESS((lockstr=PyString_FromString("_sync__lock")) &&
+	 (aqstr=PyString_FromString("acquire")) &&
+	 (restr=PyString_FromString("release")) &&
+	 (newlock=PyImport_ImportModule("ThreadLock"))
+	 ) return;
+
+  ASSIGN(newlock, PyObject_GetAttrString(newlock, "allocate_lock"));
+  UNLESS(newlock) return;
+
+  /* Create the module and add the functions */
+  m = Py_InitModule4("Sync", Module_Level__methods,
+		     Sync_module_documentation,
+		     (PyObject*)NULL,PYTHON_API_VERSION);
+
+  /* Add some symbolic constants to the module */
+  d = PyModule_GetDict(m);
+  PyExtensionClass_Export(d,"Synchronized",SynchronizedType);
+  PyDict_SetItemString(d,"__version__",
+		       PyString_FromStringAndSize(rev+11,strlen(rev+11)-2));
+
+  /* Check for errors */
+  CHECK_FOR_ERRORS("can't initialize module MethodObject");
+}
+
+/*****************************************************************************
+Revision Log:
+
+  $Log: Sync.c,v $
+  Revision 1.1  1997/09/18 20:36:37  jim
+  *** empty log message ***
+
+  $Revision 1.2  1997/06/21 15:22:03  jim
+  $Removed "object" suffix from generates C type names
+  $
+  $Revision 1.1  1997/02/24 23:25:42  jim
+  $initial
+  $
+
+*****************************************************************************/

lib/Components/ExtensionClass/src/Sync.c

+/***********************************************************
+     Copyright 
+
+       Copyright 1997 Digital Creations, L.L.C., 910 Princess Anne
+       Street, Suite 300, Fredericksburg, Virginia 22401 U.S.A. All
+       rights reserved.  Copyright in this software is owned by DCLC,
+       unless otherwise indicated.  Note that any product, process or
+       technology described in this software may be the subject of
+       other Intellectual Property rights reserved by Digital
+       Creations, L.C. and are not licensed hereunder.
+
+     Trademarks 
+
+       Digital Creations & DCLC, are trademarks of Digital Creations, L.C..
+       All other trademarks are owned by their respective companies. 
+
+     No Warranty 
+
+       The software is provided "as is" without warranty of any kind,
+       either express or implied, including, but not limited to, the
+       implied warranties of merchantability, fitness for a particular
+       purpose, or non-infringement. This software could include
+       technical inaccuracies or typographical errors. Changes are
+       periodically made to the software; these changes will be
+       incorporated in new editions of the software. DCLC may make
+       improvements and/or changes in this software at any time
+       without notice.
+
+     Limitation Of Liability 
+
+       In no event will DCLC be liable for direct, indirect, special,
+       incidental, economic, cover, or consequential damages arising
+       out of the use of or inability to use this software even if
+       advised of the possibility of such damages. Some states do not
+       allow the exclusion or limitation of implied warranties or
+       limitation of liability for incidental or consequential
+       damages, so the above limitation or exclusion may not apply to
+       you.
+
+    If you have questions regarding this software,
+    contact:
+   
+      Digital Creations L.L.C.  
+      info@digicool.com
+      (540) 371-6909
+
+******************************************************************/
+
+
+static char Sync_module_documentation[] = 
+""
+"\n$Id: Sync.c,v 1.1 1997/09/18 20:36:37 jim Exp $"
+;
+
+#include "ExtensionClass.h"
+
+static PyObject *ErrorObject;
+
+/* ----------------------------------------------------- */
+
+static void PyVar_Assign(PyObject **v, PyObject *e) { Py_XDECREF(*v); *v=e;}
+#define ASSIGN(V,E) PyVar_Assign(&(V),(E))
+#define UNLESS(E) if(!(E))
+#define UNLESS_ASSIGN(V,E) ASSIGN(V,E); UNLESS(V)
+#define OBJECT(O) ((PyObject*)(O))
+
+PyObject *lockstr, *aqstr, *restr, *newlock;
+
+static PyObject *
+Synchronized___call_method__(PyObject *self, PyObject *args)
+{
+  PyObject *f, *a, *k=0, *l=0, *aq=0, *t, *v, *tb, *r;
+  UNLESS(PyArg_ParseTuple(args, "OO|O", &f, &a, &k)) return NULL;
+
+  UNLESS(l=PyObject_GetAttr(self, lockstr))
+    {
+      PyErr_Clear();
+      UNLESS(l=PyObject_CallObject(newlock, NULL)) return NULL;
+      if(PyObject_SetAttr(self, lockstr, l) < 0) goto err;
+    }
+
+  UNLESS(aq=PyObject_GetAttr(l, aqstr)) goto err;
+  UNLESS_ASSIGN(aq,PyObject_CallObject(aq,NULL)) goto err;
+
+  if(k) r=PyEval_CallObjectWithKeywords(f,a,k);
+  else  r=PyObject_CallObject(f,a);
+
+  PyErr_Fetch(&t, &v, &tb);
+
+  ASSIGN(aq,PyObject_GetAttr(l, restr));
+  if(aq) ASSIGN(aq,PyObject_CallObject(aq,NULL));
+
+  Py_XDECREF(aq);
+  Py_DECREF(l);
+
+  PyErr_Restore(t, v, tb);
+
+  return r;
+
+err:
+  Py_DECREF(l);
+  return NULL;
+}
+
+
+static struct PyMethodDef Synchronized_methods[] = {
+  {"__call_method__", (PyCFunction)Synchronized___call_method__, METH_VARARGS,
+   "Call a method by first getting a thread lock"
+  },
+  {NULL,		NULL}		/* sentinel */
+};
+
+/* List of methods defined in the module */
+
+static struct PyMethodDef Module_Level__methods[] = {
+  
+  {NULL, (PyCFunction)NULL, 0, NULL}		/* sentinel */
+};
+
+/* Initialization function for the module (*must* be called initSync) */
+
+void
+initSync()
+{
+  PyObject *m, *d;
+  char *rev="$Revision: 1.1 $";
+  PURE_MIXIN_CLASS(Synchronized,
+		   "Mix-in class that provides synchonization of method calls\n"
+		   "\n"
+		   "Only one thread is allowed to call a synchronized \n"
+		   "object's methods.\n",
+		   Synchronized_methods);
+
+  UNLESS((lockstr=PyString_FromString("_sync__lock")) &&
+	 (aqstr=PyString_FromString("acquire")) &&
+	 (restr=PyString_FromString("release")) &&
+	 (newlock=PyImport_ImportModule("ThreadLock"))
+	 ) return;
+
+  ASSIGN(newlock, PyObject_GetAttrString(newlock, "allocate_lock"));
+  UNLESS(newlock) return;
+
+  /* Create the module and add the functions */
+  m = Py_InitModule4("Sync", Module_Level__methods,
+		     Sync_module_documentation,
+		     (PyObject*)NULL,PYTHON_API_VERSION);
+
+  /* Add some symbolic constants to the module */
+  d = PyModule_GetDict(m);
+  PyExtensionClass_Export(d,"Synchronized",SynchronizedType);
+  PyDict_SetItemString(d,"__version__",
+		       PyString_FromStringAndSize(rev+11,strlen(rev+11)-2));
+
+  /* Check for errors */
+  CHECK_FOR_ERRORS("can't initialize module MethodObject");
+}
+
+/*****************************************************************************
+Revision Log:
+
+  $Log: Sync.c,v $
+  Revision 1.1  1997/09/18 20:36:37  jim
+  *** empty log message ***
+
+  $Revision 1.2  1997/06/21 15:22:03  jim
+  $Removed "object" suffix from generates C type names
+  $
+  $Revision 1.1  1997/02/24 23:25:42  jim
+  $initial
+  $
+
+*****************************************************************************/