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randr: add new interface to allow delaying lease responses 

Add a new interface to _rrScrPriv to make it possible for the server to
delay answering a lease request, at the cost of blocking the client. This
is needed for implementing drm-lease-v1, as the Wayland protocol has no
defined time table for responding to lease requests.

Signed-off-by: Xaver Hugl <xaver.hugl@gmail.com>
Acked-by: Michel Dänzer <mdaenzer@redhat.com>
This commit is contained in:
Xaver Hugl 2021-12-02 13:22:53 +01:00 committed by Olivier Fourdan
parent f34ffdd9a9
commit 7759743c63
3 changed files with 36 additions and 5 deletions
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2
hw/xfree86/common/xf86Module.h
View File

@ -74,7 +74,7 @@
* mask is 0xFFFF0000.
*/
#define ABI_ANSIC_VERSION SET_ABI_VERSION(0, 4)
#define ABI_VIDEODRV_VERSION SET_ABI_VERSION(25, 2)
#define ABI_VIDEODRV_VERSION SET_ABI_VERSION(25, 3)
#define ABI_XINPUT_VERSION SET_ABI_VERSION(24, 4)
#define ABI_EXTENSION_VERSION SET_ABI_VERSION(10, 0)

12
randr/randrstr.h
View File

@ -280,6 +280,15 @@ typedef int (*RRCreateLeaseProcPtr)(ScreenPtr screen,
typedef void (*RRTerminateLeaseProcPtr)(ScreenPtr screen,
RRLeasePtr lease);
typedef int (*RRRequestLeaseProcPtr)(ClientPtr client,
ScreenPtr screen,
RRLeasePtr lease);
typedef void (*RRGetLeaseProcPtr)(ClientPtr client,
ScreenPtr screen,
RRLeasePtr *lease,
int *fd);
/* These are for 1.0 compatibility */
typedef struct _rrRefresh {
@ -408,6 +417,9 @@ typedef struct _rrScrPriv {
RRMonitorPtr *monitors;
struct xorg_list leases;
RRRequestLeaseProcPtr rrRequestLease;
RRGetLeaseProcPtr rrGetLease;
} rrScrPrivRec, *rrScrPrivPtr;
extern _X_EXPORT DevPrivateKeyRec rrPrivKeyRec;

27
randr/rrlease.c
View File

@ -239,9 +239,19 @@ ProcRRCreateLease(ClientPtr client)
if (!scr_priv)
return BadMatch;
if (!scr_priv->rrCreateLease)
if (!scr_priv->rrCreateLease && !scr_priv->rrRequestLease)
return BadMatch;
if (scr_priv->rrGetLease) {
scr_priv->rrGetLease(client, screen, &lease, &fd);
if (lease) {
if (fd >= 0)
goto leaseReturned;
else
goto bail_lease;
}
}
/* Allocate a structure to hold all of the lease information */
lease = RRLeaseAlloc(screen, stuff->lid, stuff->nCrtcs, stuff->nOutputs);
@ -291,10 +301,19 @@ ProcRRCreateLease(ClientPtr client)
lease->outputs[o] = output;
}
rc = scr_priv->rrCreateLease(screen, lease, &fd);
if (rc != Success)
goto bail_lease;
if (scr_priv->rrRequestLease) {
rc = scr_priv->rrRequestLease(client, screen, lease);
if (rc == Success)
return Success;
else
goto bail_lease;
} else {
rc = scr_priv->rrCreateLease(screen, lease, &fd);
if (rc != Success)
goto bail_lease;
}
leaseReturned:
xorg_list_add(&lease->list, &scr_priv->leases);
if (!AddResource(stuff->lid, RRLeaseType, lease)) {