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authormarha <marha@users.sourceforge.net>2014-03-09 22:56:02 +0100
committermarha <marha@users.sourceforge.net>2014-03-09 22:56:02 +0100
commit2112b7dec49833ba872bd3ebcd7288930fec0796 (patch)
tree407c80c9a70f590af2d4c3e5c14678827e189331 /mesalib/src/mapi/u_thread.h
parent8badbdef38ce843dc443ddee219eda4040ef2cd5 (diff)
parent3dd4b6420f686b0147d5b8136268cc63196e253b (diff)
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Merge remote-tracking branch 'origin/released'
* origin/released: fontconfig mesa xserver git update 9 Mar 2014 Conflicts: mesalib/src/mapi/glapi/glapi.h xorg-server/hw/kdrive/ephyr/hostx.c
Diffstat (limited to 'mesalib/src/mapi/u_thread.h')
-rw-r--r--mesalib/src/mapi/u_thread.h32
1 files changed, 20 insertions, 12 deletions
diff --git a/mesalib/src/mapi/u_thread.h b/mesalib/src/mapi/u_thread.h
index ba5d98ea9..57c3b076a 100644
--- a/mesalib/src/mapi/u_thread.h
+++ b/mesalib/src/mapi/u_thread.h
@@ -57,9 +57,9 @@
/*
* Error messages
*/
-#define INIT_TSD_ERROR "_glthread_: failed to allocate key for thread specific data"
-#define GET_TSD_ERROR "_glthread_: failed to get thread specific data"
-#define SET_TSD_ERROR "_glthread_: thread failed to set thread specific data"
+#define INIT_TSD_ERROR "Mesa: failed to allocate key for thread specific data"
+#define GET_TSD_ERROR "Mesa: failed to get thread specific data"
+#define SET_TSD_ERROR "Mesa: thread failed to set thread specific data"
/*
@@ -79,20 +79,28 @@ struct u_tsd {
unsigned initMagic;
};
-typedef mtx_t u_mutex;
-
-#define u_mutex_declare_static(name) \
- static u_mutex name = _MTX_INITIALIZER_NP
-
-#define u_mutex_init(name) mtx_init(&(name), mtx_plain)
-#define u_mutex_destroy(name) mtx_destroy(&(name))
-#define u_mutex_lock(name) (void) mtx_lock(&(name))
-#define u_mutex_unlock(name) (void) mtx_unlock(&(name))
static INLINE unsigned long
u_thread_self(void)
{
+ /*
+ * XXX: Callers of u_thread_self assume it is a lightweight function,
+ * returning a numeric value. But unfortunately C11's thrd_current() gives
+ * no such guarantees. In fact, it's pretty hard to have a compliant
+ * implementation of thrd_current() on Windows with such characteristics.
+ * So for now, we side-step this mess and use Windows thread primitives
+ * directly here.
+ *
+ * FIXME: On the other hand, u_thread_self() is a bad
+ * abstraction. Even with pthreads, there is no guarantee that
+ * pthread_self() will return numeric IDs -- we should be using
+ * pthread_equal() instead of assuming we can compare thread ids...
+ */
+#ifdef _WIN32
+ return GetCurrentThreadId();
+#else
return (unsigned long) (uintptr_t) thrd_current();
+#endif
}