--- /dev/null
+/* GLIB - Library of useful routines for C programming
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * gthread.c: solaris thread system implementation
+ * Copyright 1998-2001 Sebastian Wilhelmi; University of Karlsruhe
+ * Copyright 2001 Hans Breuer
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * Modified by the GLib Team and others 1997-2000. See the AUTHORS
+ * file for a list of people on the GLib Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GLib at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+/*
+ * MT safe
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <glib.h>
+
+#define STRICT
+#include <windows.h>
+#undef STRICT
+
+#include <process.h>
+#include <malloc.h>
+
+#define win32_check_for_error(what) G_STMT_START{ \
+ if (!(what)) \
+ g_error ("file %s: line %d (%s): error %ld during %s", \
+ __FILE__, __LINE__, G_GNUC_PRETTY_FUNCTION, \
+ GetLastError (), #what); \
+ }G_STMT_END
+
+#define G_MUTEX_SIZE (sizeof (HANDLE))
+
+#define PRIORITY_LOW_VALUE THREAD_PRIORITY_BELOW_NORMAL
+#define PRIORITY_NORMAL_VALUE THREAD_PRIORITY_NORMAL
+#define PRIORITY_HIGH_VALUE THREAD_PRIORITY_ABOVE_NORMAL
+#define PRIORITY_URGENT_VALUE THREAD_PRIORITY_HIGHEST
+
+static DWORD g_thread_self_tls;
+static DWORD g_private_tls;
+static DWORD g_cond_event_tls;
+static CRITICAL_SECTION g_thread_global_spinlock;
+
+typedef BOOL (__stdcall *GTryEnterCriticalSectionFunc) (CRITICAL_SECTION *);
+
+static GTryEnterCriticalSectionFunc try_enter_critical_section = NULL;
+
+/* As noted in the docs, GPrivate is a limited resource, here we take
+ * a rather low maximum to save memory, use GStaticPrivate instead. */
+#define G_PRIVATE_MAX 16
+
+static GDestroyNotify g_private_destructors[G_PRIVATE_MAX];
+
+static guint g_private_next = 0;
+
+typedef struct _GThreadData GThreadData;
+struct _GThreadData
+{
+ GThreadFunc func;
+ gpointer data;
+ HANDLE thread;
+ gboolean joinable;
+};
+
+struct _GCond
+{
+ GPtrArray *array;
+ CRITICAL_SECTION lock;
+};
+
+static GMutex *
+g_mutex_new_win32_cs_impl (void)
+{
+ CRITICAL_SECTION *retval = g_new (CRITICAL_SECTION, 1);
+ InitializeCriticalSection (retval);
+ return (GMutex *) retval;
+}
+
+static void
+g_mutex_free_win32_cs_impl (GMutex *mutex)
+{
+ g_free (mutex);
+}
+
+/* NOTE: the functions g_mutex_lock and g_mutex_unlock may not use
+ functions from gmem.c and gmessages.c; */
+
+static void
+g_mutex_lock_win32_cs_impl (GMutex *mutex)
+{
+ EnterCriticalSection ((CRITICAL_SECTION *)mutex);
+}
+
+static gboolean
+g_mutex_trylock_win32_cs_impl (GMutex * mutex)
+{
+ return try_enter_critical_section ((CRITICAL_SECTION *)mutex);
+}
+
+static void
+g_mutex_unlock_win32_cs_impl (GMutex *mutex)
+{
+ LeaveCriticalSection ((CRITICAL_SECTION *)mutex);
+}
+
+static GMutex *
+g_mutex_new_win32_impl (void)
+{
+ HANDLE handle;
+ win32_check_for_error (handle = CreateMutex (NULL, FALSE, NULL));
+ return (GMutex *) handle;
+}
+
+static void
+g_mutex_free_win32_impl (GMutex *mutex)
+{
+ win32_check_for_error (CloseHandle ((HANDLE) mutex));
+}
+
+/* NOTE: the functions g_mutex_lock and g_mutex_unlock may not use
+ functions from gmem.c and gmessages.c; */
+
+static void
+g_mutex_lock_win32_impl (GMutex *mutex)
+{
+ WaitForSingleObject ((HANDLE) mutex, INFINITE);
+}
+
+static gboolean
+g_mutex_trylock_win32_impl (GMutex * mutex)
+{
+ DWORD result;
+ win32_check_for_error (WAIT_FAILED !=
+ (result = WaitForSingleObject ((HANDLE)mutex, 0)));
+ return result != WAIT_TIMEOUT;
+}
+
+static void
+g_mutex_unlock_win32_impl (GMutex *mutex)
+{
+ ReleaseMutex ((HANDLE) mutex);
+}
+
+static GCond *
+g_cond_new_win32_impl (void)
+{
+ GCond *retval = g_new (GCond, 1);
+
+ retval->array = g_ptr_array_new ();
+ InitializeCriticalSection (&retval->lock);
+
+ return retval;
+}
+
+static void
+g_cond_signal_win32_impl (GCond * cond)
+{
+ EnterCriticalSection (&cond->lock);
+
+ if (cond->array->len > 0)
+ {
+ SetEvent (g_ptr_array_index (cond->array, 0));
+ g_ptr_array_remove_index (cond->array, 0);
+ }
+
+ LeaveCriticalSection (&cond->lock);
+}
+
+static void
+g_cond_broadcast_win32_impl (GCond * cond)
+{
+ guint i;
+ EnterCriticalSection (&cond->lock);
+
+ for (i = 0; i < cond->array->len; i++)
+ SetEvent (g_ptr_array_index (cond->array, i));
+
+ g_ptr_array_set_size (cond->array, 0);
+ LeaveCriticalSection (&cond->lock);
+}
+
+static gboolean
+g_cond_wait_internal (GCond *cond,
+ GMutex *entered_mutex,
+ gulong milliseconds)
+{
+ gulong retval;
+ HANDLE event = TlsGetValue (g_cond_event_tls);
+
+ if (!event)
+ {
+ win32_check_for_error (event = CreateEvent (0, FALSE, FALSE, NULL));
+ TlsSetValue (g_cond_event_tls, event);
+ }
+
+ EnterCriticalSection (&cond->lock);
+
+ /* The event must not be signaled. Check this */
+ g_assert (WaitForSingleObject (event, 0) == WAIT_TIMEOUT);
+
+ g_ptr_array_add (cond->array, event);
+ LeaveCriticalSection (&cond->lock);
+
+ g_mutex_unlock (entered_mutex);
+
+ win32_check_for_error (WAIT_FAILED !=
+ (retval = WaitForSingleObject (event, milliseconds)));
+
+ g_mutex_lock (entered_mutex);
+
+ if (retval == WAIT_TIMEOUT)
+ {
+ EnterCriticalSection (&cond->lock);
+ g_ptr_array_remove (cond->array, event);
+
+ /* In the meantime we could have been signaled, so we must again
+ * wait for the signal, this time with no timeout, to reset it */
+ win32_check_for_error (WAIT_FAILED != WaitForSingleObject (event, 0));
+
+ LeaveCriticalSection (&cond->lock);
+ }
+
+#ifndef G_DISABLE_ASSERT
+ EnterCriticalSection (&cond->lock);
+
+ /* Now event must not be inside the array, check this */
+ g_assert (g_ptr_array_remove (cond->array, event) == FALSE);
+
+ LeaveCriticalSection (&cond->lock);
+#endif /* !G_DISABLE_ASSERT */
+
+ return retval != WAIT_TIMEOUT;
+}
+
+static void
+g_cond_wait_win32_impl (GCond *cond,
+ GMutex *entered_mutex)
+{
+ g_return_if_fail (cond != NULL);
+ g_return_if_fail (entered_mutex != NULL);
+
+ g_cond_wait_internal (cond, entered_mutex, INFINITE);
+}
+
+static gboolean
+g_cond_timed_wait_win32_impl (GCond *cond,
+ GMutex *entered_mutex,
+ GTimeVal *abs_time)
+{
+ GTimeVal current_time;
+ gulong to_wait;
+
+ g_return_val_if_fail (cond != NULL, FALSE);
+ g_return_val_if_fail (entered_mutex != NULL, FALSE);
+
+ g_get_current_time (¤t_time);
+ to_wait = (abs_time->tv_sec - current_time.tv_sec) * 1000 +
+ (abs_time->tv_usec - current_time.tv_usec) / 1000;
+
+ return g_cond_wait_internal (cond, entered_mutex, to_wait);
+}
+
+static void
+g_cond_free_win32_impl (GCond * cond)
+{
+ g_ptr_array_free (cond->array, TRUE);
+ g_free (cond);
+}
+
+static GPrivate *
+g_private_new_win32_impl (GDestroyNotify destructor)
+{
+ GPrivate *result;
+ EnterCriticalSection (&g_thread_global_spinlock);
+ if (g_private_next >= G_PRIVATE_MAX)
+ g_error ("Too many GPrivate allocated. Their number is limited to %d.\n"
+ "Use GStaticPrivate instead.\n", G_PRIVATE_MAX);
+ g_private_destructors[g_private_next] = destructor;
+ result = GUINT_TO_POINTER (g_private_next);
+ g_private_next++;
+ LeaveCriticalSection (&g_thread_global_spinlock);
+
+ return result;
+}
+
+/* NOTE: the functions g_private_get and g_private_set may not use
+ functions from gmem.c and gmessages.c */
+
+static void
+g_private_set_win32_impl (GPrivate * private_key, gpointer value)
+{
+ gpointer* array = TlsGetValue (g_private_tls);
+ guint index = GPOINTER_TO_UINT (private_key);
+
+ if (index >= G_PRIVATE_MAX)
+ return;
+
+ if (!array)
+ {
+ array = (gpointer*) calloc (G_PRIVATE_MAX, sizeof (gpointer));
+ TlsSetValue (g_private_tls, array);
+ }
+
+ array[index] = value;
+}
+
+static gpointer
+g_private_get_win32_impl (GPrivate * private_key)
+{
+ gpointer* array = TlsGetValue (g_private_tls);
+ guint index = GPOINTER_TO_UINT (private_key);
+
+ if (index >= G_PRIVATE_MAX || !array)
+ return NULL;
+
+ return array[index];
+}
+
+static void
+g_thread_set_priority_win32_impl (gpointer thread, GThreadPriority priority)
+{
+ GThreadData *target = *(GThreadData **)thread;
+
+ g_return_if_fail (priority >= G_THREAD_PRIORITY_LOW);
+ g_return_if_fail (priority <= G_THREAD_PRIORITY_URGENT);
+
+ win32_check_for_error (SetThreadPriority (target->thread,
+ g_thread_priority_map [priority]));
+}
+
+static void
+g_thread_self_win32_impl (gpointer thread)
+{
+ GThreadData *self = TlsGetValue (g_thread_self_tls);
+
+ if (!self)
+ {
+ /* This should only happen for the main thread! */
+ HANDLE handle = GetCurrentThread ();
+ HANDLE process = GetCurrentProcess ();
+ self = g_new (GThreadData, 1);
+ win32_check_for_error (DuplicateHandle (process, handle, process,
+ &self->thread, 0, FALSE,
+ DUPLICATE_SAME_ACCESS));
+ win32_check_for_error (TlsSetValue (g_thread_self_tls, self));
+ self->func = NULL;
+ self->data = NULL;
+ self->joinable = FALSE;
+ }
+
+ *(GThreadData **)thread = self;
+}
+
+static void
+g_thread_exit_win32_impl (void)
+{
+ GThreadData *self = TlsGetValue (g_thread_self_tls);
+ guint i, private_max;
+ gpointer *array = TlsGetValue (g_private_tls);
+ HANDLE event = TlsGetValue (g_cond_event_tls);
+
+ EnterCriticalSection (&g_thread_global_spinlock);
+ private_max = g_private_next;
+ LeaveCriticalSection (&g_thread_global_spinlock);
+
+ if (array)
+ {
+ for (i = 0; i < private_max; i++)
+ {
+ GDestroyNotify destructor = g_private_destructors[i];
+ GDestroyNotify data = array[i];
+ if (destructor && data)
+ destructor (data);
+ }
+
+ g_free (array);
+
+ win32_check_for_error (TlsSetValue (g_private_tls, NULL));
+ }
+
+ if (self)
+ {
+ if (!self->joinable)
+ {
+ win32_check_for_error (CloseHandle (self->thread));
+ g_free (self);
+ }
+ win32_check_for_error (TlsSetValue (g_thread_self_tls, NULL));
+ }
+
+ if (event)
+ {
+ CloseHandle (event);
+ win32_check_for_error (TlsSetValue (g_cond_event_tls, NULL));
+ }
+
+ _endthreadex (0);
+}
+
+static guint __stdcall
+g_thread_proxy (gpointer data)
+{
+ GThreadData *self = (GThreadData*) data;
+
+ win32_check_for_error (TlsSetValue (g_thread_self_tls, self));
+
+ self->func (self->data);
+
+ g_thread_exit_win32_impl ();
+
+ g_assert_not_reached ();
+
+ return 0;
+}
+
+static void
+g_thread_create_win32_impl (GThreadFunc func,
+ gpointer data,
+ gulong stack_size,
+ gboolean joinable,
+ gboolean bound,
+ GThreadPriority priority,
+ gpointer thread,
+ GError **error)
+{
+ guint ignore;
+ GThreadData *retval;
+
+ g_return_if_fail (func);
+ g_return_if_fail (priority >= G_THREAD_PRIORITY_LOW);
+ g_return_if_fail (priority <= G_THREAD_PRIORITY_URGENT);
+
+ retval = g_new(GThreadData, 1);
+ retval->func = func;
+ retval->data = data;
+
+ retval->joinable = joinable;
+
+ retval->thread = (HANDLE) _beginthreadex (NULL, stack_size, g_thread_proxy,
+ retval, 0, &ignore);
+
+ if (retval->thread == NULL)
+ {
+ g_free (retval);
+ g_set_error (error, G_THREAD_ERROR, G_THREAD_ERROR_AGAIN,
+ "Error creating thread: %ld", GetLastError());
+ return;
+ }
+
+ *(GThreadData **)thread = retval;
+
+ g_thread_set_priority_win32_impl (thread, priority);
+}
+
+static void
+g_thread_yield_win32_impl (void)
+{
+ Sleep(0);
+}
+
+static void
+g_thread_join_win32_impl (gpointer thread)
+{
+ GThreadData *target = *(GThreadData **)thread;
+
+ g_return_if_fail (target->joinable);
+
+ win32_check_for_error (WAIT_FAILED !=
+ WaitForSingleObject (target->thread, INFINITE));
+
+ win32_check_for_error (CloseHandle (target->thread));
+ g_free (target);
+}
+
+static GThreadFunctions g_thread_functions_for_glib_use_default =
+{
+ g_mutex_new_win32_impl, /* mutex */
+ g_mutex_lock_win32_impl,
+ g_mutex_trylock_win32_impl,
+ g_mutex_unlock_win32_impl,
+ g_mutex_free_win32_impl,
+ g_cond_new_win32_impl, /* condition */
+ g_cond_signal_win32_impl,
+ g_cond_broadcast_win32_impl,
+ g_cond_wait_win32_impl,
+ g_cond_timed_wait_win32_impl,
+ g_cond_free_win32_impl,
+ g_private_new_win32_impl, /* private thread data */
+ g_private_get_win32_impl,
+ g_private_set_win32_impl,
+ g_thread_create_win32_impl, /* thread */
+ g_thread_yield_win32_impl,
+ g_thread_join_win32_impl,
+ g_thread_exit_win32_impl,
+ g_thread_set_priority_win32_impl,
+ g_thread_self_win32_impl
+};
+
+#define HAVE_G_THREAD_IMPL_INIT
+static void
+g_thread_impl_init ()
+{
+ HMODULE kernel32;
+
+ win32_check_for_error (TLS_OUT_OF_INDEXES !=
+ (g_thread_self_tls = TlsAlloc ()));
+ win32_check_for_error (TLS_OUT_OF_INDEXES !=
+ (g_private_tls = TlsAlloc ()));
+ win32_check_for_error (TLS_OUT_OF_INDEXES !=
+ (g_cond_event_tls = TlsAlloc ()));
+ InitializeCriticalSection (&g_thread_global_spinlock);
+
+ /* Here we are looking for TryEnterCriticalSection in KERNEL32.DLL,
+ * if it is found, we can use the faster critical sections instead
+ * of mutexes. Note however that
+ * http://www2.awl.com/cseng/titles/0-201-63465-1/csmutx.htm indicates,
+ * that critical sections might not be ideal after all on SMP machines */
+ kernel32 = GetModuleHandle ("KERNEL32.DLL");
+ if (kernel32)
+ {
+ try_enter_critical_section = (GTryEnterCriticalSectionFunc)
+ GetProcAddress(kernel32, "TryEnterCriticalSection");
+
+ /* Even if TryEnterCriticalSection is found, it is not
+ * necessarily working..., we have to check it */
+ if (try_enter_critical_section &&
+ try_enter_critical_section (&g_thread_global_spinlock))
+ {
+ LeaveCriticalSection (&g_thread_global_spinlock);
+
+ g_thread_functions_for_glib_use_default.mutex_new =
+ g_mutex_new_win32_cs_impl;
+ g_thread_functions_for_glib_use_default.mutex_lock =
+ g_mutex_lock_win32_cs_impl;
+ g_thread_functions_for_glib_use_default.mutex_trylock =
+ g_mutex_trylock_win32_cs_impl;
+ g_thread_functions_for_glib_use_default.mutex_unlock =
+ g_mutex_unlock_win32_cs_impl;
+ g_thread_functions_for_glib_use_default.mutex_free =
+ g_mutex_free_win32_cs_impl;
+ }
+ }
+}
+
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