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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/*
* The DLL entry point (DllMain) for NSPR.
*
* The only reason we use DLLMain() now is to find out whether
* the NSPR DLL is statically or dynamically loaded. When
* dynamically loaded, we cannot use static thread-local storage.
* However, static TLS is faster than the TlsXXX() functions.
* So we want to use static TLS whenever we can. A global
* variable _pr_use_static_tls is set in DllMain() during process
* attachment to indicate whether it is safe to use static TLS
* or not.
*/
#include <windows.h>
#include <primpl.h>
extern BOOL _pr_use_static_tls; /* defined in ntthread.c */
BOOL WINAPI DllMain(
HINSTANCE hinstDLL,
DWORD fdwReason,
LPVOID lpvReserved)
{
PRThread *me;
switch (fdwReason) {
case DLL_PROCESS_ATTACH:
/*
* If lpvReserved is NULL, we are dynamically loaded
* and therefore can't use static thread-local storage.
*/
if (lpvReserved == NULL) {
_pr_use_static_tls = FALSE;
} else {
_pr_use_static_tls = TRUE;
}
break;
case DLL_THREAD_ATTACH:
break;
case DLL_THREAD_DETACH:
me = _MD_GET_ATTACHED_THREAD();
if ((me != NULL) && (me->flags & _PR_ATTACHED))
_PRI_DetachThread();
break;
case DLL_PROCESS_DETACH:
break;
}
return TRUE;
}
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