[Qemu-devel] [PATCH 2/3] glib: add g_thread_new() compat function

[Stefan Hajnoczi <stefanha@redhat.com>]

Implement g_thread_new() in terms of the deprecated g_thread_create().
The API was changed in glib 2.31.0.

The compat function allows us to write modern code and avoid ifdefs.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 coroutine-gthread.c   | 13 +++----------
 include/glib-compat.h | 13 +++++++++++++
 trace/simple.c        |  5 +----
 3 files changed, 17 insertions(+), 14 deletions(-)

diff --git a/coroutine-gthread.c b/coroutine-gthread.c
index d3e5b99..695c113 100644
--- a/coroutine-gthread.c
+++ b/coroutine-gthread.c
@@ -76,11 +76,6 @@ static inline void set_coroutine_key(CoroutineGThread *co,
     g_private_replace(&coroutine_key, co);
 }
 
-static inline GThread *create_thread(GThreadFunc func, gpointer data)
-{
-    return g_thread_new("coroutine", func, data);
-}
-
 #else
 
 /* Handle older GLib versions */
@@ -104,15 +99,13 @@ static inline void set_coroutine_key(CoroutineGThread *co,
                          free_on_thread_exit ? (GDestroyNotify)g_free : NULL);
 }
 
+#endif
+
 static inline GThread *create_thread(GThreadFunc func, gpointer data)
 {
-    return g_thread_create_full(func, data, 0, TRUE, TRUE,
-                                G_THREAD_PRIORITY_NORMAL, NULL);
+    return g_thread_new("coroutine", func, data);
 }
 
-#endif
-
-
 static void __attribute__((constructor)) coroutine_init(void)
 {
     if (!g_thread_supported()) {
diff --git a/include/glib-compat.h b/include/glib-compat.h
index 8d25900..ea965df 100644
--- a/include/glib-compat.h
+++ b/include/glib-compat.h
@@ -36,4 +36,17 @@ static inline gint g_poll(GPollFD *fds, guint nfds, gint timeout)
 }
 #endif
 
+#if !GLIB_CHECK_VERSION(2, 31, 0)
+static inline GThread *g_thread_new(const gchar *unused,
+                                    GThreadFunc func,
+                                    gpointer data)
+{
+    GThread *thread = g_thread_create(func, data, TRUE, NULL);
+    if (!thread) {
+        g_error("g_thread_create failed");
+    }
+    return thread;
+}
+#endif
+
 #endif
diff --git a/trace/simple.c b/trace/simple.c
index 57572c4..8e83e59 100644
--- a/trace/simple.c
+++ b/trace/simple.c
@@ -17,6 +17,7 @@
 #include <pthread.h>
 #endif
 #include "qemu/timer.h"
+#include "glib-compat.h"
 #include "trace.h"
 #include "trace/control.h"
 #include "trace/simple.h"
@@ -397,11 +398,7 @@ static GThread *trace_thread_create(GThreadFunc fn)
     pthread_sigmask(SIG_SETMASK, &set, &oldset);
 #endif
 
-#if GLIB_CHECK_VERSION(2, 31, 0)
     thread = g_thread_new("trace-thread", fn, NULL);
-#else
-    thread = g_thread_create(fn, NULL, FALSE, NULL);
-#endif
 
 #ifndef _WIN32
     pthread_sigmask(SIG_SETMASK, &oldset, NULL);
-- 
1.8.5.3