summaryrefslogtreecommitdiff
path: root/mozilla/nsprpub/pr/src/md/windows/ntdllmn.c
diff options
context:
space:
mode:
Diffstat (limited to 'mozilla/nsprpub/pr/src/md/windows/ntdllmn.c')
-rw-r--r--mozilla/nsprpub/pr/src/md/windows/ntdllmn.c88
1 files changed, 88 insertions, 0 deletions
diff --git a/mozilla/nsprpub/pr/src/md/windows/ntdllmn.c b/mozilla/nsprpub/pr/src/md/windows/ntdllmn.c
new file mode 100644
index 0000000..fa8d25f
--- /dev/null
+++ b/mozilla/nsprpub/pr/src/md/windows/ntdllmn.c
@@ -0,0 +1,88 @@
+/* -*- 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;
+}