backport tim_one's checkin of

    revision 2.22 of thread_nt.h

SF patch  522961: Leak in Python/thread_nt.h, from Gerald S. Williams.
A file-static "threads" dict mapped thread IDs to Windows handles, but
was never referenced, and entries never got removed.  This gets rid of
the YAGNI-dict entirely.
Bugfix candidate.

diff --git a/Python/thread_nt.h b/Python/thread_nt.h
index 6eac020ee04808226530a3cc2f4d1bdec4fe6f7e..8040a3ade0c813dbf66d795ea65926ad9dafbb99 100644 (file)
--- a/Python/thread_nt.h
+++ b/Python/thread_nt.h
@@ -1,11 +1,11 @@
 
 /* This code implemented by Dag.Gruneau@elsa.preseco.comm.se */
 /* Fast NonRecursiveMutex support by Yakov Markovitch, markovitch@iso.ru */
+/* Eliminated some memory leaks, gsw@agere.com */
 
 #include <windows.h>
 #include <limits.h>
 #include <process.h>
-#include <Python.h>
 
 typedef struct NRMUTEX {
        LONG   owned ;
@@ -13,9 +13,6 @@ typedef struct NRMUTEX {
        HANDLE hevent ;
 } NRMUTEX, *PNRMUTEX ;
 
-/* dictionary to correlate thread ids with the handle needed to terminate them*/
-static PyObject *threads = NULL;
-
 typedef PVOID WINAPI interlocked_cmp_xchg_t(PVOID *dest, PVOID exc, PVOID comperand) ;
 
 /* Sorry mate, but we haven't got InterlockedCompareExchange in Win95! */
@@ -138,17 +135,11 @@ void FreeNonRecursiveMutex(PNRMUTEX mutex)
 
 long PyThread_get_thread_ident(void);
 
-/*
- * Change all headers to pure ANSI as no one will use K&R style on an
- * NT
- */
-
 /*
  * Initialization of the C package, should not be needed.
  */
 static void PyThread__init_thread(void)
 {
-       threads = PyDict_New();
 }
 
 /*
@@ -182,7 +173,6 @@ long PyThread_start_new_thread(void (*func)(void *), void *arg)
        int success = 0;
        callobj *obj;
        int id;
-       PyObject *key, *val;
 
        dprintf(("%ld: PyThread_start_new_thread called\n", PyThread_get_thread_ident()));
        if (!initialized)
@@ -203,9 +193,6 @@ long PyThread_start_new_thread(void (*func)(void *), void *arg)
        /* wait for thread to initialize and retrieve id */
        WaitForSingleObject(obj->done, 5000);  /* maybe INFINITE instead of 5000? */
        CloseHandle((HANDLE)obj->done);
-       key = PyLong_FromLong(obj->id);
-       val = PyLong_FromLong((long)rv);
-       PyDict_SetItem(threads, key, val);
        id = obj->id;
        free(obj);
        return id;