/** Tests that unlocking a lock held by another context fails appropriately */
static void
test_unlock_unowned(int drmfd)
{
int ret;
ret = drmGetLock(drmfd, lock1, 0);
assert(ret == 0);
ret = drmUnlock(drmfd, lock2);
if (ret == 0)
errx(1, "Unlocking other context's lock succeeded");
ret = drmUnlock(drmfd, lock1);
assert(ret == 0);
}
static void client()
{
int drmfd, ret;
unsigned int time;
wait_event(0, SERVER_READY);
/* XXX: Should make sure we open the same DRM as the master */
drmfd = drm_open_any();
client_auth(drmfd);
/* Wait for the server to grab the lock, then grab it ourselves (to
* contest it). Hopefully we hit it within the window of when the
* server locks.
*/
wait_event(0, SERVER_LOCKED);
ret = drmGetLock(drmfd, lock2, 0);
time = get_millis();
if (ret != 0)
err(1, "Failed to get lock on client\n");
drmUnlock(drmfd, lock2);
/* Tell the server that our locking completed, and when it did */
send_event(0, CLIENT_LOCKED);
ret = write(commfd[0], &time, sizeof(time));
close(drmfd);
exit(0);
}
/** Tests that unlocking the lock while it's not held works correctly */
static void
test_unlock_unlocked(int drmfd)
{
int ret;
ret = drmUnlock(drmfd, lock1);
if (ret == 0)
err(1, "Unlocking unlocked lock succeeded");
}
/** Tests that locking is successful in normal conditions */
static void
test_lock_unlock(int drmfd)
{
int ret;
ret = drmGetLock(drmfd, lock1, 0);
if (ret != 0)
err(1, "Locking failed");
ret = drmUnlock(drmfd, lock1);
if (ret != 0)
err(1, "Unlocking failed");
}
/**
* Tests that an open/close by the same process doesn't result in the lock
* being dropped.
*/
static void test_open_close_locked(drmfd)
{
int ret, tempfd;
ret = drmGetLock(drmfd, lock1, 0);
assert(ret == 0);
/* XXX: Need to make sure that this is the same device as drmfd */
tempfd = drm_open_any();
close(tempfd);
ret = drmUnlock(drmfd, lock1);
if (ret != 0)
errx(1, "lock lost during open/close by same pid");
}
static void server()
{
int drmfd, tempfd, ret;
unsigned int client_time, unlock_time;
drmfd = drm_open_any_master();
test_lock_unlock(drmfd);
test_unlock_unlocked(drmfd);
test_unlock_unowned(drmfd);
test_open_close_locked(drmfd);
/* Perform the authentication sequence with the client. */
server_auth(drmfd);
/* Now, test that the client attempting to lock while the server
* holds the lock works correctly.
*/
ret = drmGetLock(drmfd, lock1, 0);
assert(ret == 0);
send_event(1, SERVER_LOCKED);
/* Wait a while for the client to do its thing */
sleep(1);
ret = drmUnlock(drmfd, lock1);
assert(ret == 0);
unlock_time = get_millis();
wait_event(1, CLIENT_LOCKED);
ret = read(commfd[1], &client_time, sizeof(client_time));
if (ret == -1)
err(1, "Failure to read client magic");
if (client_time < unlock_time)
errx(1, "Client took lock before server released it");
close(drmfd);
}
struct bufmgr *
bm_intel_Attach(struct intel_context *intel)
{
GLuint i;
for (i = 0; i < nr_bms; i++)
if (bufmgr_pool[i].driFd == intel->driFd) {
bufmgr_pool[i].refcount++;
_mesa_printf("retrieive old bufmgr for fd %d\n",
bufmgr_pool[i].driFd);
return &bufmgr_pool[i];
}
if (nr_bms < BM_MAX) {
struct bufmgr *bm = &bufmgr_pool[nr_bms++];
_mesa_printf("create new bufmgr for fd %d\n", intel->driFd);
bm->driFd = intel->driFd;
bm->hash = _mesa_NewHashTable();
bm->refcount = 1;
_glthread_INIT_MUTEX(bm->mutex);
drmGetLock(bm->driFd, intel->hHWContext, 0);
BM_CKFATAL(drmMMAllocBufferPool(bm->driFd, mmPoolRing, 0,
DRM_MM_TT | DRM_MM_NO_EVICT |
DRM_MM_READ | DRM_MM_EXE |
BM_BATCHBUFFER, 1024 * 1024, 4096,
&bm->batchPool));
drmUnlock(bm->driFd, intel->hHWContext);
return bm;
}
_mesa_printf("failed to create new bufmgr for fd %d\n", intel->driFd);
return NULL;
}
void i830RegetLockQuiescent( i830ContextPtr imesa )
{
drmUnlock(imesa->driFd, imesa->hHWContext);
i830GetLock( imesa, DRM_LOCK_QUIESCENT );
}
