58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* The DLL entry point (DllMain) for NSPR.
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*
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* The only reason we use DLLMain() now is to find out whether
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* the NSPR DLL is statically or dynamically loaded. When
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* dynamically loaded, we cannot use static thread-local storage.
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* However, static TLS is faster than the TlsXXX() functions.
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* So we want to use static TLS whenever we can. A global
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* variable _pr_use_static_tls is set in DllMain() during process
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* attachment to indicate whether it is safe to use static TLS
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* or not.
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*/
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#include <windows.h>
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#include <primpl.h>
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extern BOOL _pr_use_static_tls; /* defined in ntthread.c */
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BOOL WINAPI DllMain(
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HINSTANCE hinstDLL,
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DWORD fdwReason,
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LPVOID lpvReserved)
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{
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PRThread *me;
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switch (fdwReason) {
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case DLL_PROCESS_ATTACH:
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/*
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* If lpvReserved is NULL, we are dynamically loaded
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* and therefore can't use static thread-local storage.
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*/
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if (lpvReserved == NULL) {
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_pr_use_static_tls = FALSE;
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} else {
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_pr_use_static_tls = TRUE;
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}
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break;
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case DLL_THREAD_ATTACH:
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break;
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case DLL_THREAD_DETACH:
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if (_pr_initialized) {
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me = _MD_GET_ATTACHED_THREAD();
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if ((me != NULL) && (me->flags & _PR_ATTACHED)) {
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_PRI_DetachThread();
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}
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}
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break;
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case DLL_PROCESS_DETACH:
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break;
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}
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return TRUE;
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}
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