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authormarha <marha@users.sourceforge.net>2013-11-07 08:23:50 +0100
committermarha <marha@users.sourceforge.net>2013-11-07 08:23:50 +0100
commit51c3a4e7b08aa904ff2af52a9f6f7adc748b361f (patch)
tree38fa447dc8970b83becb4d35487d2bb2e565301b /xorg-server/miext/sync/misyncshm.c
parentd79b6645eb21ca82d506ef038b8ea71a1e431f3f (diff)
parent31fd4c5654595a4763e492e4ec26f66ca3a8a405 (diff)
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Merge remote-tracking branch 'origin/released'
* origin/released: libxtrans fontconfig mesa xserver pixman xkbcomp git update 4 nov 2013 Conflicts: xorg-server/Xext/shm.c xorg-server/os/xstrans.c
Diffstat (limited to 'xorg-server/miext/sync/misyncshm.c')
-rw-r--r--xorg-server/miext/sync/misyncshm.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/xorg-server/miext/sync/misyncshm.c b/xorg-server/miext/sync/misyncshm.c
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+++ b/xorg-server/miext/sync/misyncshm.c
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+/*
+ * Copyright © 2013 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "scrnintstr.h"
+#include "misync.h"
+#include "misyncstr.h"
+#include "misyncshm.h"
+#include "pixmapstr.h"
+#include <sys/mman.h>
+#include <unistd.h>
+#include <X11/xshmfence.h>
+
+static DevPrivateKeyRec syncShmFencePrivateKey;
+
+typedef struct _SyncShmFencePrivate {
+ int32_t *fence;
+ int fd;
+} SyncShmFencePrivateRec, *SyncShmFencePrivatePtr;
+
+#define SYNC_FENCE_PRIV(pFence) \
+ (SyncShmFencePrivatePtr) dixLookupPrivate(&pFence->devPrivates, &syncShmFencePrivateKey)
+
+static void
+miSyncShmFenceSetTriggered(SyncFence * pFence)
+{
+ SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
+
+ if (pPriv->fence)
+ xshmfence_trigger(pPriv->fence);
+ miSyncFenceSetTriggered(pFence);
+}
+
+static void
+miSyncShmFenceReset(SyncFence * pFence)
+{
+ SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
+
+ if (pPriv->fence)
+ xshmfence_reset(pPriv->fence);
+ miSyncFenceReset(pFence);
+}
+
+static Bool
+miSyncShmFenceCheckTriggered(SyncFence * pFence)
+{
+ SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
+
+ if (pPriv->fence)
+ return xshmfence_query(pPriv->fence);
+ else
+ return miSyncFenceCheckTriggered(pFence);
+}
+
+static void
+miSyncShmFenceAddTrigger(SyncTrigger * pTrigger)
+{
+ miSyncFenceAddTrigger(pTrigger);
+}
+
+static void
+miSyncShmFenceDeleteTrigger(SyncTrigger * pTrigger)
+{
+ miSyncFenceDeleteTrigger(pTrigger);
+}
+
+static const SyncFenceFuncsRec miSyncShmFenceFuncs = {
+ &miSyncShmFenceSetTriggered,
+ &miSyncShmFenceReset,
+ &miSyncShmFenceCheckTriggered,
+ &miSyncShmFenceAddTrigger,
+ &miSyncShmFenceDeleteTrigger
+};
+
+static void
+miSyncShmScreenCreateFence(ScreenPtr pScreen, SyncFence * pFence,
+ Bool initially_triggered)
+{
+ SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
+
+ pPriv->fence = NULL;
+ miSyncScreenCreateFence(pScreen, pFence, initially_triggered);
+ pFence->funcs = miSyncShmFenceFuncs;
+}
+
+static void
+miSyncShmScreenDestroyFence(ScreenPtr pScreen, SyncFence * pFence)
+{
+ SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
+
+ if (pPriv->fence) {
+ xshmfence_trigger(pPriv->fence);
+ xshmfence_unmap_shm(pPriv->fence);
+ close(pPriv->fd);
+ }
+ miSyncScreenDestroyFence(pScreen, pFence);
+}
+
+int
+miSyncInitFenceFromFD(DrawablePtr pDraw, SyncFence *pFence, int fd, BOOL initially_triggered)
+
+{
+ SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
+
+ miSyncInitFence(pDraw->pScreen, pFence, initially_triggered);
+
+ pPriv->fence = xshmfence_map_shm(fd);
+ if (pPriv->fence) {
+ pPriv->fd = fd;
+ return Success;
+ }
+ else
+ close(fd);
+ return BadValue;
+}
+
+int
+miSyncFDFromFence(DrawablePtr pDraw, SyncFence *pFence)
+{
+ SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
+
+ if (!pPriv->fence) {
+ pPriv->fd = xshmfence_alloc_shm();
+ if (pPriv->fd < 0)
+ return -1;
+ pPriv->fence = xshmfence_map_shm(pPriv->fd);
+ if (!pPriv->fence) {
+ close (pPriv->fd);
+ return -1;
+ }
+ }
+ return pPriv->fd;
+}
+
+_X_EXPORT Bool miSyncShmScreenInit(ScreenPtr pScreen)
+{
+ SyncScreenFuncsPtr funcs;
+
+ if (!miSyncSetup(pScreen))
+ return FALSE;
+
+ if (!dixPrivateKeyRegistered(&syncShmFencePrivateKey)) {
+ if (!dixRegisterPrivateKey(&syncShmFencePrivateKey, PRIVATE_SYNC_FENCE,
+ sizeof(SyncShmFencePrivateRec)))
+ return FALSE;
+ }
+
+ funcs = miSyncGetScreenFuncs(pScreen);
+
+ funcs->CreateFence = miSyncShmScreenCreateFence;
+ funcs->DestroyFence = miSyncShmScreenDestroyFence;
+ return TRUE;
+}
+