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Commit 544fb293 authored by Jim Fulton's avatar Jim Fulton
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Added conditional compilation logic to allow compilation in 

non-threaded environments.
parent 85b7c316
Hide whitespace changes
Inline Side-by-side
Showing with 74 additions and 8 deletions
lib/Components/ExtensionClass/ThreadLock.c
View file @ 544fb293
......@@ -53,11 +53,13 @@
static char ThreadLock_module_documentation[] =
""
"\n$Id: ThreadLock.c,v 1.2 1997/07/02 20:21:02 jim Exp $"
"\n$Id: ThreadLock.c,v 1.3 1997/10/30 15:29:21 jim Exp $"
;
#include "Python.h"
#ifdef WITH_THREAD
#include "thread.h"
#endif
static PyObject *ErrorObject;
......@@ -71,7 +73,9 @@ typedef struct {
PyObject_HEAD
int count;
long id;
#ifdef WITH_THREAD
type_lock lock;
#endif
} ThreadLockObject;
staticforward PyTypeObject ThreadLockType;
......@@ -81,7 +85,11 @@ staticforward PyTypeObject ThreadLockType;
static int
cacquire(ThreadLockObject *self)
{
#ifdef WITH_THREAD
long id = get_thread_ident();
#else
long id = 1;
#endif
if(self->count >= 0 && self->id==id)
{
/* Somebody has locked me. It is either the current thread or
......@@ -93,9 +101,11 @@ cacquire(ThreadLockObject *self)
}
else
{
#ifdef WITH_THREAD
Py_BEGIN_ALLOW_THREADS
acquire_lock(self->lock, 1);
Py_END_ALLOW_THREADS
#endif
self->count=0;
self->id=id;
}
......@@ -113,7 +123,11 @@ acquire(ThreadLockObject *self, PyObject *args)
static int
crelease(ThreadLockObject *self)
{
#ifdef WITH_THREAD
long id = get_thread_ident();
#else
long id = 1;
#endif
if(self->count >= 0 && self->id==id)
{
/* Somebody has locked me. It is either the current thread or
......@@ -122,7 +136,9 @@ crelease(ThreadLockObject *self)
if another thread had the lock, then the id would not be this
one. */
self->count--;
#ifdef WITH_THREAD
if(self->count < 0) release_lock(self->lock);
#endif
}
else
{
......@@ -177,7 +193,9 @@ static struct PyMethodDef ThreadLock_methods[] = {
static void
ThreadLock_dealloc(ThreadLockObject *self)
{
#ifdef WITH_THREAD
free_lock(self->lock);
#endif
PyMem_DEL(self);
}
......@@ -238,20 +256,26 @@ newThreadLockObject(ThreadLockObject *self, PyObject *args)
UNLESS(PyArg_ParseTuple(args,"")) return NULL;
UNLESS(self = PyObject_NEW(ThreadLockObject, &ThreadLockType)) return NULL;
self->lock = allocate_lock();
self->count=-1;
#ifdef WITH_THREAD
self->lock = allocate_lock();
if (self->lock == NULL) {
PyMem_DEL(self);
self = NULL;
PyErr_SetString(ErrorObject, "can't allocate lock");
}
#endif
return (PyObject*)self;
}
static PyObject *
ident(PyObject *self, PyObject *args)
{
#ifdef WITH_THREAD
return PyInt_FromLong(get_thread_ident());
#else
return PyInt_FromLong(0);
#endif
}
/* List of methods defined in the module */
......@@ -272,7 +296,7 @@ void
initThreadLock()
{
PyObject *m, *d;
char *rev="$Revision: 1.2 $";
char *rev="$Revision: 1.3 $";
/* Create the module and add the functions */
m = Py_InitModule4("ThreadLock", Module_methods,
......@@ -290,7 +314,12 @@ initThreadLock()
PyDict_SetItemString(d, "__version__",
PyString_FromStringAndSize(rev+11,strlen(rev+11)-2));
#ifdef WITH_THREAD
PyDict_SetItemString(d, "WITH_THREAD", PyInt_FromLong(1));
#else
PyDict_SetItemString(d, "WITH_THREAD", Py_None);
#endif
/* Check for errors */
if (PyErr_Occurred())
......@@ -301,6 +330,10 @@ initThreadLock()
Revision Log:
$Log: ThreadLock.c,v $
Revision 1.3 1997/10/30 15:29:21 jim
Added conditional compilation logic to allow compilation in
non-threaded environments.
Revision 1.2 1997/07/02 20:21:02 jim
Added stupid parens and other changes to make 'gcc -Wall -pedantic'
happy. Got rid of unused macros.
......
lib/Components/ExtensionClass/src/ThreadLock.c
View file @ 544fb293
......@@ -53,11 +53,13 @@
static char ThreadLock_module_documentation[] =
""
"\n$Id: ThreadLock.c,v 1.2 1997/07/02 20:21:02 jim Exp $"
"\n$Id: ThreadLock.c,v 1.3 1997/10/30 15:29:21 jim Exp $"
;
#include "Python.h"
#ifdef WITH_THREAD
#include "thread.h"
#endif
static PyObject *ErrorObject;
......@@ -71,7 +73,9 @@ typedef struct {
PyObject_HEAD
int count;
long id;
#ifdef WITH_THREAD
type_lock lock;
#endif
} ThreadLockObject;
staticforward PyTypeObject ThreadLockType;
......@@ -81,7 +85,11 @@ staticforward PyTypeObject ThreadLockType;
static int
cacquire(ThreadLockObject *self)
{
#ifdef WITH_THREAD
long id = get_thread_ident();
#else
long id = 1;
#endif
if(self->count >= 0 && self->id==id)
{
/* Somebody has locked me. It is either the current thread or
......@@ -93,9 +101,11 @@ cacquire(ThreadLockObject *self)
}
else
{
#ifdef WITH_THREAD
Py_BEGIN_ALLOW_THREADS
acquire_lock(self->lock, 1);
Py_END_ALLOW_THREADS
#endif
self->count=0;
self->id=id;
}
......@@ -113,7 +123,11 @@ acquire(ThreadLockObject *self, PyObject *args)
static int
crelease(ThreadLockObject *self)
{
#ifdef WITH_THREAD
long id = get_thread_ident();
#else
long id = 1;
#endif
if(self->count >= 0 && self->id==id)
{
/* Somebody has locked me. It is either the current thread or
......@@ -122,7 +136,9 @@ crelease(ThreadLockObject *self)
if another thread had the lock, then the id would not be this
one. */
self->count--;
#ifdef WITH_THREAD
if(self->count < 0) release_lock(self->lock);
#endif
}
else
{
......@@ -177,7 +193,9 @@ static struct PyMethodDef ThreadLock_methods[] = {
static void
ThreadLock_dealloc(ThreadLockObject *self)
{
#ifdef WITH_THREAD
free_lock(self->lock);
#endif
PyMem_DEL(self);
}
......@@ -238,20 +256,26 @@ newThreadLockObject(ThreadLockObject *self, PyObject *args)
UNLESS(PyArg_ParseTuple(args,"")) return NULL;
UNLESS(self = PyObject_NEW(ThreadLockObject, &ThreadLockType)) return NULL;
self->lock = allocate_lock();
self->count=-1;
#ifdef WITH_THREAD
self->lock = allocate_lock();
if (self->lock == NULL) {
PyMem_DEL(self);
self = NULL;
PyErr_SetString(ErrorObject, "can't allocate lock");
}
#endif
return (PyObject*)self;
}
static PyObject *
ident(PyObject *self, PyObject *args)
{
#ifdef WITH_THREAD
return PyInt_FromLong(get_thread_ident());
#else
return PyInt_FromLong(0);
#endif
}
/* List of methods defined in the module */
......@@ -272,7 +296,7 @@ void
initThreadLock()
{
PyObject *m, *d;
char *rev="$Revision: 1.2 $";
char *rev="$Revision: 1.3 $";
/* Create the module and add the functions */
m = Py_InitModule4("ThreadLock", Module_methods,
......@@ -290,7 +314,12 @@ initThreadLock()
PyDict_SetItemString(d, "__version__",
PyString_FromStringAndSize(rev+11,strlen(rev+11)-2));
#ifdef WITH_THREAD
PyDict_SetItemString(d, "WITH_THREAD", PyInt_FromLong(1));
#else
PyDict_SetItemString(d, "WITH_THREAD", Py_None);
#endif
/* Check for errors */
if (PyErr_Occurred())
......@@ -301,6 +330,10 @@ initThreadLock()
Revision Log:
$Log: ThreadLock.c,v $
Revision 1.3 1997/10/30 15:29:21 jim
Added conditional compilation logic to allow compilation in
non-threaded environments.
Revision 1.2 1997/07/02 20:21:02 jim
Added stupid parens and other changes to make 'gcc -Wall -pedantic'
happy. Got rid of unused macros.
......
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