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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Netscape Portable Runtime (NSPR).
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* 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:
if (_pr_initialized) {
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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