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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* 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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