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-rw-r--r--src/mesa/drivers/dri/radeon/radeon_common_context.c1
-rw-r--r--src/mesa/drivers/dri/radeon/radeon_common_context.h1
-rw-r--r--src/mesa/drivers/dri/radeon/radeon_lock.c53
-rw-r--r--src/mesa/drivers/dri/radeon/radeon_lock.h12
4 files changed, 64 insertions, 3 deletions
diff --git a/src/mesa/drivers/dri/radeon/radeon_common_context.c b/src/mesa/drivers/dri/radeon/radeon_common_context.c
index 5e744f9deb..d68aa2bd62 100644
--- a/src/mesa/drivers/dri/radeon/radeon_common_context.c
+++ b/src/mesa/drivers/dri/radeon/radeon_common_context.c
@@ -211,6 +211,7 @@ GLboolean radeonInitContext(radeonContextPtr radeon,
radeon->dri.screen = sPriv;
radeon->dri.hwContext = driContextPriv->hHWContext;
radeon->dri.hwLock = &sPriv->pSAREA->lock;
+ radeon->dri.hwLockCount = 0;
radeon->dri.fd = sPriv->fd;
radeon->dri.drmMinor = sPriv->drm_version.minor;
diff --git a/src/mesa/drivers/dri/radeon/radeon_common_context.h b/src/mesa/drivers/dri/radeon/radeon_common_context.h
index d7e94a6894..f8e1a25c9f 100644
--- a/src/mesa/drivers/dri/radeon/radeon_common_context.h
+++ b/src/mesa/drivers/dri/radeon/radeon_common_context.h
@@ -365,6 +365,7 @@ struct radeon_dri_mirror {
drm_context_t hwContext;
drm_hw_lock_t *hwLock;
+ int hwLockCount;
int fd;
int drmMinor;
};
diff --git a/src/mesa/drivers/dri/radeon/radeon_lock.c b/src/mesa/drivers/dri/radeon/radeon_lock.c
index 2f0ed1cfce..6294b7e42b 100644
--- a/src/mesa/drivers/dri/radeon/radeon_lock.c
+++ b/src/mesa/drivers/dri/radeon/radeon_lock.c
@@ -86,8 +86,34 @@ void radeonGetLock(radeonContextPtr rmesa, GLuint flags)
rmesa->vtbl.get_lock(rmesa);
}
-
-void radeon_lock_hardware(radeonContextPtr radeon)
+#ifndef NDEBUG
+struct lock_debug {
+ const char* function;
+ const char* file;
+ int line;
+};
+
+static struct lock_debug ldebug = {0};
+#endif
+
+#if 0
+/** TODO: use atomic operations for reference counting **/
+/** gcc 4.2 has builtin functios for this **/
+#define ATOMIC_INC_AND_FETCH(atomic) __sync_add_and_fetch(&atomic, 1)
+#define ATOMIC_DEC_AND_FETCH(atomic) __sync_sub_and_fetch(&atomic, 1)
+#else
+#define ATOMIC_INC_AND_FETCH(atomic) (++atomic)
+#define ATOMIC_DEC_AND_FETCH(atomic) (--atomic)
+#endif
+
+
+void radeon_lock_hardware(radeonContextPtr radeon
+#ifndef NDEBUG
+ ,const char* function
+ ,const char* file
+ ,const int line
+#endif
+ )
{
char ret = 0;
struct radeon_framebuffer *rfb = NULL;
@@ -102,16 +128,39 @@ void radeon_lock_hardware(radeonContextPtr radeon)
}
if (!radeon->radeonScreen->driScreen->dri2.enabled) {
+ if (ATOMIC_INC_AND_FETCH(radeon->dri.hwLockCount) > 1)
+ {
+#ifndef NDEBUG
+ if ( RADEON_DEBUG & DEBUG_SANITY )
+ fprintf(stderr, "*** %d times of recursive call to %s ***\n"
+ "Original call was from %s (file: %s line: %d)\n"
+ "Now call is coming from %s (file: %s line: %d)\n"
+ , radeon->dri.hwLockCount, __FUNCTION__
+ , ldebug.function, ldebug.file, ldebug.line
+ , function, file, line
+ );
+#endif
+ return;
+ }
DRM_CAS(radeon->dri.hwLock, radeon->dri.hwContext,
(DRM_LOCK_HELD | radeon->dri.hwContext), ret );
if (ret)
radeonGetLock(radeon, 0);
+#ifndef NDEBUG
+ ldebug.function = function;
+ ldebug.file = file;
+ ldebug.line = line;
+#endif
}
}
void radeon_unlock_hardware(radeonContextPtr radeon)
{
if (!radeon->radeonScreen->driScreen->dri2.enabled) {
+ if (ATOMIC_DEC_AND_FETCH(radeon->dri.hwLockCount) > 0)
+ {
+ return;
+ }
DRM_UNLOCK( radeon->dri.fd,
radeon->dri.hwLock,
radeon->dri.hwContext );
diff --git a/src/mesa/drivers/dri/radeon/radeon_lock.h b/src/mesa/drivers/dri/radeon/radeon_lock.h
index 2817709eed..da5a5b4371 100644
--- a/src/mesa/drivers/dri/radeon/radeon_lock.h
+++ b/src/mesa/drivers/dri/radeon/radeon_lock.h
@@ -48,12 +48,22 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
extern void radeonGetLock(radeonContextPtr rmesa, GLuint flags);
-void radeon_lock_hardware(radeonContextPtr rmesa);
+void radeon_lock_hardware(radeonContextPtr rmesa
+#ifndef NDEBUG
+ ,const char* function
+ ,const char* file
+ ,const int line
+#endif
+ );
void radeon_unlock_hardware(radeonContextPtr rmesa);
/* Lock the hardware and validate our state.
*/
+#ifdef NDEBUG
#define LOCK_HARDWARE( rmesa ) radeon_lock_hardware(rmesa)
+#else
+#define LOCK_HARDWARE( rmesa ) radeon_lock_hardware(rmesa, __FUNCTION__, __FILE__, __LINE__)
+#endif
#define UNLOCK_HARDWARE( rmesa ) radeon_unlock_hardware(rmesa)
#endif