From fe4018941190f8bf020e4a8ed2999c212e0e113d Mon Sep 17 00:00:00 2001
From: Alexander Larsson <alexl@redhat.com>
Date: Sat, 15 Feb 2003 16:25:08 +0000
Subject: 2003-02-15  Alexander Larsson  <alexl@redhat.com>

	* dbus/dbus-threads.c:
	* dbus/dbus-threads.h:
	Add condvars. Remove static mutext from API.
	Implement static mutexes by initializing them from threads_init.

	* glib/dbus-gthread.c:
	* qt/dbus-qthread.cpp:
	Update with the thread api changes.


	* dbus/dbus-list.c:
	* dbus/dbus-list.h:
	Turn StaticMutex into normal mutex + init function.
	Export new functions _dbus_list_alloc_link, _dbus_list_free_link,
	_dbus_list_append_link, _dbus_list_prepend_link


	* dbus/dbus-sysdeps.c:
	* dbus/dbus-sysdeps.h:
	New type dbus_atomic_t, and new functions _dbus_atomic_inc,
	_dbus_atomic_dec. Only slow fallback implementation at the moment.

	* dbus/dbus-protocol.h:
	Add DBUS_MESSAGE_LOCAL_DISCONNECT define

	* dbus/dbus-message.c:
	Make ref/unref atomic.
	Fix some docs.

	* dbus/dbus-connection-internal.h:
	* dbus/dbus-connection.c:
	* dbus/dbus-connection.h:
	Make threadsafe.
	Change _peek to _borrow,_return & _steal_borrowed.
	Change disconnect callback to event.
	Make dbus_connection_dispatch_messages reentrant.

	* dbus/dbus-transport.c:
	Don't ref the connection on calls to the transport
	implementation.

	* dbus/dbus-message-handler.c:
	Make threadsafe.

	* glib/dbus-gmain.c:
	Don't use peek_message anymore

	* test/Makefile.am:
	* test/debug-thread.c:
	* test/debug-thread.h:
	Simple thread implementation that asserts() on deadlocks in
	single-threaded code.

	* test/bus-test.c:
	(main) Call debug_threads_init.

	* test/watch.c:
	Use disconnect message instead of disconnect callback.

	* bus/connection.c:
	* bus/connection.h:
	Don't call dbus_connection_set_disconnect_function. Instead export
	bus_connection_disconnect.

	* bus/dispatch.c:
	Call bus_connection_disconnect when we get a disconnected message.
---
 dbus/dbus-sysdeps.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

(limited to 'dbus/dbus-sysdeps.c')

diff --git a/dbus/dbus-sysdeps.c b/dbus/dbus-sysdeps.c
index 38efb0cd..53eebf77 100644
--- a/dbus/dbus-sysdeps.c
+++ b/dbus/dbus-sysdeps.c
@@ -23,6 +23,7 @@
 
 #include "dbus-internals.h"
 #include "dbus-sysdeps.h"
+#include "dbus-threads.h"
 #include <sys/types.h>
 #include <stdlib.h>
 #include <string.h>
@@ -941,6 +942,55 @@ _dbus_string_append_our_uid (DBusString *str)
 }
 
 
+static DBusMutex *atomic_lock = NULL;
+DBusMutex *_dbus_atomic_init_lock (void);
+DBusMutex *
+_dbus_atomic_init_lock (void)
+{
+  atomic_lock = dbus_mutex_new ();
+  return atomic_lock;
+}
+
+/**
+ * Atomically increments an integer
+ *
+ * @param atomic pointer to the integer to increment
+ * @returns the value after incrementing
+ *
+ * @todo implement arch-specific faster atomic ops
+ */
+dbus_atomic_t
+_dbus_atomic_inc (dbus_atomic_t *atomic)
+{
+  dbus_atomic_t res;
+  
+  dbus_mutex_lock (atomic_lock);
+  *atomic += 1;
+  res = *atomic;
+  dbus_mutex_unlock (atomic_lock);
+  return res;
+}
+
+/**
+ * Atomically decrement an integer
+ *
+ * @param atomic pointer to the integer to decrement
+ * @returns the value after decrementing
+ *
+ * @todo implement arch-specific faster atomic ops
+ */
+dbus_atomic_t
+_dbus_atomic_dec (dbus_atomic_t *atomic)
+{
+  dbus_atomic_t res;
+  
+  dbus_mutex_lock (atomic_lock);
+  *atomic -= 1;
+  res = *atomic;
+  dbus_mutex_unlock (atomic_lock);
+  return res;
+}
+
 /**
  * Wrapper for poll().
  *
-- 
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