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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 */

    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;
        case DLL_THREAD_ATTACH:
        case DLL_THREAD_DETACH:
            if (_pr_initialized) {
                me = _MD_GET_ATTACHED_THREAD();
                if ((me != NULL) && (me->flags & _PR_ATTACHED))
        case DLL_PROCESS_DETACH:
    return TRUE;

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