regex: also remove dependency on HAVE_WCSCOLL

[gnulib.git] / lib / msvc-inval.c

diff --git a/lib/msvc-inval.c b/lib/msvc-inval.c
index 4618455..1873e23 100644 (file)
--- a/lib/msvc-inval.c
+++ b/lib/msvc-inval.c
@@ -1,5 +1,5 @@
 /* Invalid parameter handler for MSVC runtime libraries.
-   Copyright (C) 2011 Free Software Foundation, Inc.
+   Copyright (C) 2011-2013 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -12,52 +12,106 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License along
-   with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   with this program; if not, see <http://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
 /* Specification.  */
 #include "msvc-inval.h"
 
-#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
+    && !(MSVC_INVALID_PARAMETER_HANDLING == SANE_LIBRARY_HANDLING)
 
-/* Get declarations of the Win32 API functions.  */
-# define WIN32_LEAN_AND_MEAN
-# include <windows.h>
+/* Get _invalid_parameter_handler type and _set_invalid_parameter_handler
+   declaration.  */
+# include <stdlib.h>
 
-# if defined _MSC_VER
+# if MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
 
-static void cdecl
+static void __cdecl
 gl_msvc_invalid_parameter_handler (const wchar_t *expression,
                                    const wchar_t *function,
                                    const wchar_t *file,
                                    unsigned int line,
                                    uintptr_t dummy)
 {
-  RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
 }
 
 # else
 
-jmp_buf gl_msvc_inval_restart;
-int gl_msvc_inval_restart_valid;
+/* Get declarations of the native Windows API functions.  */
+#  define WIN32_LEAN_AND_MEAN
+#  include <windows.h>
+
+#  if defined _MSC_VER
 
-static void cdecl
+static void __cdecl
 gl_msvc_invalid_parameter_handler (const wchar_t *expression,
                                    const wchar_t *function,
                                    const wchar_t *file,
                                    unsigned int line,
                                    uintptr_t dummy)
 {
-  if (gl_msvc_inval_restart_valid)
-    longjmp (gl_msvc_inval_restart, 1);
+  RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
+}
+
+#  else
+
+/* An index to thread-local storage.  */
+static DWORD tls_index;
+static int tls_initialized /* = 0 */;
+
+/* Used as a fallback only.  */
+static struct gl_msvc_inval_per_thread not_per_thread;
+
+struct gl_msvc_inval_per_thread *
+gl_msvc_inval_current (void)
+{
+  if (!tls_initialized)
+    {
+      tls_index = TlsAlloc ();
+      tls_initialized = 1;
+    }
+  if (tls_index == TLS_OUT_OF_INDEXES)
+    /* TlsAlloc had failed.  */
+    return &not_per_thread;
+  else
+    {
+      struct gl_msvc_inval_per_thread *pointer =
+        (struct gl_msvc_inval_per_thread *) TlsGetValue (tls_index);
+      if (pointer == NULL)
+        {
+          /* First call.  Allocate a new 'struct gl_msvc_inval_per_thread'.  */
+          pointer =
+            (struct gl_msvc_inval_per_thread *)
+            malloc (sizeof (struct gl_msvc_inval_per_thread));
+          if (pointer == NULL)
+            /* Could not allocate memory.  Use the global storage.  */
+            pointer = &not_per_thread;
+          TlsSetValue (tls_index, pointer);
+        }
+      return pointer;
+    }
+}
+
+static void __cdecl
+gl_msvc_invalid_parameter_handler (const wchar_t *expression,
+                                   const wchar_t *function,
+                                   const wchar_t *file,
+                                   unsigned int line,
+                                   uintptr_t dummy)
+{
+  struct gl_msvc_inval_per_thread *current = gl_msvc_inval_current ();
+  if (current->restart_valid)
+    longjmp (current->restart, 1);
   else
     /* An invalid parameter notification from outside the gnulib code.
        Give the caller a chance to intervene.  */
     RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
 }
 
+#  endif
+
 # endif
 
 static int gl_msvc_inval_initialized /* = 0 */;