From 6be752a9b1a38379b8631c5dcb6c47e099af4f02 Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Fri, 7 Jul 2017 18:33:54 -0700
Subject: Add methods for thread-local contexts to the router

---
 router/al.c | 38 +++++++++++++++++++++++++++++---------
 1 file changed, 29 insertions(+), 9 deletions(-)

(limited to 'router/al.c')

diff --git a/router/al.c b/router/al.c
index 7af7168a..3349ad13 100644
--- a/router/al.c
+++ b/router/al.c
@@ -9,16 +9,36 @@
 
 ATOMIC(DriverIface*) CurrentCtxDriver = ATOMIC_INIT_STATIC(NULL);
 
-#define DECL_THUNK1(R,n,T1) AL_API R AL_APIENTRY n(T1 a) \
-{ return ATOMIC_LOAD(&CurrentCtxDriver, almemory_order_acquire)->n(a); }
+#define DECL_THUNK1(R,n,T1) AL_API R AL_APIENTRY n(T1 a)                      \
+{                                                                             \
+    DriverIface *iface = altss_get(ThreadCtxDriver);                          \
+    if(!iface) iface = ATOMIC_LOAD(&CurrentCtxDriver, almemory_order_acquire);\
+    return iface->n(a);                                                       \
+}
 #define DECL_THUNK2(R,n,T1,T2) AL_API R AL_APIENTRY n(T1 a, T2 b) \
-{ return ATOMIC_LOAD(&CurrentCtxDriver, almemory_order_acquire)->n(a, b); }
+{                                                                             \
+    DriverIface *iface = altss_get(ThreadCtxDriver);                          \
+    if(!iface) iface = ATOMIC_LOAD(&CurrentCtxDriver, almemory_order_acquire);\
+    return iface->n(a, b);                                                    \
+}
 #define DECL_THUNK3(R,n,T1,T2,T3) AL_API R AL_APIENTRY n(T1 a, T2 b, T3 c) \
-{ return ATOMIC_LOAD(&CurrentCtxDriver, almemory_order_acquire)->n(a, b, c); }
+{                                                                             \
+    DriverIface *iface = altss_get(ThreadCtxDriver);                          \
+    if(!iface) iface = ATOMIC_LOAD(&CurrentCtxDriver, almemory_order_acquire);\
+    return iface->n(a, b, c);                                                 \
+}
 #define DECL_THUNK4(R,n,T1,T2,T3,T4) AL_API R AL_APIENTRY n(T1 a, T2 b, T3 c, T4 d) \
-{ return ATOMIC_LOAD(&CurrentCtxDriver, almemory_order_acquire)->n(a, b, c, d); }
+{                                                                             \
+    DriverIface *iface = altss_get(ThreadCtxDriver);                          \
+    if(!iface) iface = ATOMIC_LOAD(&CurrentCtxDriver, almemory_order_acquire);\
+    return iface->n(a, b, c, d);                                              \
+}
 #define DECL_THUNK5(R,n,T1,T2,T3,T4,T5) AL_API R AL_APIENTRY n(T1 a, T2 b, T3 c, T4 d, T5 e) \
-{ return ATOMIC_LOAD(&CurrentCtxDriver, almemory_order_acquire)->n(a, b, c, d, e); }
+{                                                                             \
+    DriverIface *iface = altss_get(ThreadCtxDriver);                          \
+    if(!iface) iface = ATOMIC_LOAD(&CurrentCtxDriver, almemory_order_acquire);\
+    return iface->n(a, b, c, d, e);                                           \
+}
 
 
 /* Ugly hack for some apps calling alGetError without a current context, and
@@ -26,9 +46,9 @@ ATOMIC(DriverIface*) CurrentCtxDriver = ATOMIC_INIT_STATIC(NULL);
  */
 AL_API ALenum AL_APIENTRY alGetError(void)
 {
-    DriverIface *iface = ATOMIC_LOAD(&CurrentCtxDriver, almemory_order_acquire);
-    if(iface) return iface->alGetError();
-    return AL_NO_ERROR;
+    DriverIface *iface = altss_get(ThreadCtxDriver);
+    if(!iface) iface = ATOMIC_LOAD(&CurrentCtxDriver, almemory_order_acquire);
+    return iface ? iface->alGetError() : AL_NO_ERROR;
 }
 
 
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