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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /nsprpub/pr/src/md/windows/ntdllmn.c
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'nsprpub/pr/src/md/windows/ntdllmn.c')
-rw-r--r--nsprpub/pr/src/md/windows/ntdllmn.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/nsprpub/pr/src/md/windows/ntdllmn.c b/nsprpub/pr/src/md/windows/ntdllmn.c
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+++ b/nsprpub/pr/src/md/windows/ntdllmn.c
@@ -0,0 +1,57 @@
+/* -*- 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;
+}