diff options
Diffstat (limited to 'src/xvmc/intel_xvmc.c')
| -rw-r--r-- | src/xvmc/intel_xvmc.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/xvmc/intel_xvmc.c b/src/xvmc/intel_xvmc.c index 6c9a9501..21eb607d 100644 --- a/src/xvmc/intel_xvmc.c +++ b/src/xvmc/intel_xvmc.c @@ -30,6 +30,35 @@ struct _intel_xvmc_driver *xvmc_driver = NULL; static int error_base; static int event_base; +/* locking */ +static void intel_xvmc_try_heavy_lock(drm_context_t ctx) +{ + drmGetLock(xvmc_driver->fd, ctx, 0); +} + +void LOCK_HARDWARE(drm_context_t ctx) +{ + char __ret = 0; + + PPTHREAD_MUTEX_LOCK(); + assert(!xvmc_driver->locked); + + DRM_CAS(xvmc_driver->driHwLock, ctx, + (DRM_LOCK_HELD | ctx), __ret); + + if (__ret) + intel_xvmc_try_heavy_lock(ctx); + + xvmc_driver->locked = 1; +} + +void UNLOCK_HARDWARE(drm_context_t ctx) +{ + xvmc_driver->locked = 0; + DRM_UNLOCK(xvmc_driver->fd, xvmc_driver->driHwLock, ctx); + PPTHREAD_MUTEX_UNLOCK(); +} + /* * Function: XvMCCreateContext * Description: Create a XvMC context for the given surface parameters. @@ -196,6 +225,9 @@ Status XvMCCreateContext(Display *display, XvPortID port, free(priv_data); return BadAlloc; } + pSAREA = (drm_sarea_t *)xvmc_driver->sarea_address; + xvmc_driver->driHwLock = (drmLock *)&pSAREA->lock; + pthread_mutex_init(&xvmc_driver->ctxmutex, NULL); /* call driver hook. * driver hook should free priv_data after return if success.*/ |