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implement __mg_alloc_sem_for_shared_surf and __mg_free_sem_for_shared_surf; create semphore set manager for shared surfaces

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Vincent Wei
2020-02-01 21:46:24 +08:00
parent af9e425dd0
commit 485f2602cd
1 changed files with 93 additions and 8 deletions
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101
src/server/layer.c
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@@ -283,7 +283,67 @@ BOOL __mg_is_valid_layer (MG_Layer* layer)
return FALSE;
}
static void delete_zi_sem (void)
#ifdef _MGSCHEMA_COMPOSITING
static SemSetManager* _ssm_shared_surf;
int __mg_alloc_sem_for_shared_surf (void)
{
if (IsServer()) {
return __mg_alloc_mutual_sem (_ssm_shared_surf, NULL);
}
else {
int sem_num, ignore;
REQUEST req;
req.id = REQID_ALLOC_SURF_SEM;
req.data = &ignore;
req.len_data = sizeof (int);
if (ClientRequestEx (&req, NULL, 0,
&sem_num, sizeof (int)) < 0)
return -1;
return sem_num;
}
}
int __mg_free_sem_for_shared_surf (int sem_num)
{
if (IsServer()) {
return __mg_free_mutual_sem (_ssm_shared_surf, sem_num);
}
else {
int ret_value;
REQUEST req;
req.id = REQID_FREE_SURF_SEM;
req.data = &sem_num;
req.len_data = sizeof (int);
if (ClientRequestEx (&req, NULL, 0,
&ret_value, sizeof (int)) < 0)
return FALSE;
return ret_value;
}
}
static void delete_sem_set_for_shared_surf (void)
{
union semun ignored;
if (semctl (SHAREDRES_SEMID_SHARED_SURF, 0, IPC_RMID, ignored) < 0)
goto error;
return;
error:
_ERR_PRINTF ("KERNEL: failed to remove semaphore set for shared surfaces: %m\n");
}
#endif /* defined _MGSCHEMA_COMPOSITING */
static void delete_sem_set_for_layers (void)
{
union semun ignored;
if (semctl (SHAREDRES_SEMID_LAYER, 0, IPC_RMID, ignored) < 0)
@@ -292,7 +352,7 @@ static void delete_zi_sem (void)
return;
error:
perror("remove semaphore");
_ERR_PRINTF ("KERNEL: failed to remove semaphore set for layers: %m\n");
}
int __mg_init_layers ()
@@ -306,6 +366,28 @@ int __mg_init_layers ()
memset (sem_usage, 0xFF, sizeof (sem_usage));
#ifdef _MGSCHEMA_COMPOSITING
if ((sem_key = get_sem_key_for_shared_surf ()) == -1) {
return -1;
}
semid = semget (sem_key, MAX_NR_SHARED_SURF, SEM_PARAM | IPC_CREAT | IPC_EXCL);
if (semid == -1)
return -1;
SHAREDRES_SEMID_SHARED_SURF = semid;
atexit (delete_sem_set_for_shared_surf);
_ssm_shared_surf = __mg_create_sem_set_manager (semid, MAX_NR_SHARED_SURF);
if (_ssm_shared_surf == NULL)
return -1;
// mark the first semphore is used
assert (__mg_alloc_mutual_sem (_ssm_shared_surf, NULL) == 0);
on_exit (__mg_delete_sem_set_manager, _ssm_shared_surf);
#endif
if ((sem_key = get_sem_key_for_layers ()) == -1) {
return -1;
}
@@ -313,9 +395,9 @@ int __mg_init_layers ()
semid = semget (sem_key, MAX_NR_LAYERS, SEM_PARAM | IPC_CREAT | IPC_EXCL);
if (semid == -1)
return -1;
atexit (delete_zi_sem);
SHAREDRES_SEMID_LAYER = semid;
atexit (delete_sem_set_for_layers);
/* allocate the first layer for the default layer. */
if (!do_alloc_layer (mgLayers, NAME_DEF_LAYER,
@@ -763,7 +845,8 @@ const ZNODEHEADER* GUIAPI ServerGetWinZNodeHeader (MG_Layer* layer,
// XXX use sem_timedwait
if (hdr->dirty_rcs == NULL) {
sem_wait (&pdc->surface->shared_header->sem_lock);
//sem_wait (&pdc->surface->shared_header->sem_lock);
LOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);
hdr->dirty_age = pdc->surface->shared_header->dirty_age;
hdr->nr_dirty_rcs = pdc->surface->shared_header->nr_dirty_rcs;
@@ -811,7 +894,8 @@ const ZNODEHEADER* GUIAPI ServerGetPopupMenuZNodeHeader (int idx, BOOL lock)
// XXX use sem_timedwait
if (hdr->dirty_rcs == NULL) {
sem_wait (&pdc->surface->shared_header->sem_lock);
//sem_wait (&pdc->surface->shared_header->sem_lock);
LOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);
hdr->dirty_age = pdc->surface->shared_header->dirty_age;
hdr->nr_dirty_rcs = pdc->surface->shared_header->nr_dirty_rcs;
@@ -852,8 +936,8 @@ BOOL GUIAPI ServerReleaseWinZNodeHeader (MG_Layer* layer, int idx_znode)
if ((pdc = dc_HDC2PDC (hdr->mem_dc)) &&
pdc->surface->shared_header && hdr->dirty_rcs) {
// XXX use sem_timedwait
sem_post (&pdc->surface->shared_header->sem_lock);
//sem_post (&pdc->surface->shared_header->sem_lock);
UNLOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);
hdr->dirty_age = 0;
hdr->nr_dirty_rcs = 0;
@@ -879,7 +963,8 @@ BOOL GUIAPI ServerReleasePopupMenuZNodeHeader (int idx)
if ((pdc = dc_HDC2PDC (hdr->mem_dc)) &&
pdc->surface->shared_header && hdr->dirty_rcs) {
sem_post (&pdc->surface->shared_header->sem_lock);
//sem_post (&pdc->surface->shared_header->sem_lock);
UNLOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);
hdr->dirty_age = 0;
hdr->nr_dirty_rcs = 0;
hdr->dirty_rcs = NULL;