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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 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 Netscape are
* Copyright (C) 1998-2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL"), in which case the provisions of the GPL are applicable
* instead of those above. If you wish to allow use of your
* version of this file only under the terms of the GPL and not to
* allow others to use your version of this file under the MPL,
* indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*/
/*
* 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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