GFile *
gimp_get_temp_file (Gimp *gimp,
const gchar *extension)
{
static gint id = 0;
static gint pid;
gchar *basename;
gchar *path;
GFile *dir;
GFile *file;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
if (id == 0)
pid = gimp_get_pid ();
if (extension)
basename = g_strdup_printf ("gimp-temp-%d%d.%s", pid, id++, extension);
else
basename = g_strdup_printf ("gimp-temp-%d%d", pid, id++);
path = gimp_config_path_expand (GIMP_GEGL_CONFIG (gimp->config)->temp_path,
TRUE, NULL);
dir = g_file_new_for_path (path);
g_free (path);
file = g_file_get_child (dir, basename);
g_free (basename);
g_object_unref (dir);
return file;
}
static GimpValueArray *
getpid_invoker (GimpProcedure *procedure,
Gimp *gimp,
GimpContext *context,
GimpProgress *progress,
const GimpValueArray *args,
GError **error)
{
GimpValueArray *return_vals;
gint32 pid = 0;
pid = gimp_get_pid ();
return_vals = gimp_procedure_get_return_values (procedure, TRUE, NULL);
g_value_set_int (gimp_value_array_index (return_vals, 1), pid);
return return_vals;
}
GimpPlugInShm *
gimp_plug_in_shm_new (void)
{
/* allocate a piece of shared memory for use in transporting tiles
* to plug-ins. if we can't allocate a piece of shared memory then
* we'll fall back on sending the data over the pipe.
*/
GimpPlugInShm *shm = g_slice_new0 (GimpPlugInShm);
shm->shm_ID = -1;
#if defined(USE_SYSV_SHM)
/* Use SysV shared memory mechanisms for transferring tile data. */
{
shm->shm_ID = shmget (IPC_PRIVATE, TILE_MAP_SIZE, IPC_CREAT | 0600);
if (shm->shm_ID != -1)
{
shm->shm_addr = (guchar *) shmat (shm->shm_ID, NULL, 0);
if (shm->shm_addr == (guchar *) -1)
{
g_printerr ("shmat() failed: %s\n" ERRMSG_SHM_DISABLE,
g_strerror (errno));
shmctl (shm->shm_ID, IPC_RMID, NULL);
shm->shm_ID = -1;
}
#ifdef IPC_RMID_DEFERRED_RELEASE
if (shm->shm_addr != (guchar *) -1)
shmctl (shm->shm_ID, IPC_RMID, NULL);
#endif
}
else
{
g_printerr ("shmget() failed: %s\n" ERRMSG_SHM_DISABLE,
g_strerror (errno));
}
}
#elif defined(USE_WIN32_SHM)
/* Use Win32 shared memory mechanisms for transferring tile data. */
{
gint pid;
gchar fileMapName[MAX_PATH];
/* Our shared memory id will be our process ID */
pid = GetCurrentProcessId ();
/* From the id, derive the file map name */
g_snprintf (fileMapName, sizeof (fileMapName), "GIMP%d.SHM", pid);
/* Create the file mapping into paging space */
shm->shm_handle = CreateFileMapping (INVALID_HANDLE_VALUE, NULL,
PAGE_READWRITE, 0,
TILE_MAP_SIZE,
fileMapName);
if (shm->shm_handle)
{
/* Map the shared memory into our address space for use */
shm->shm_addr = (guchar *) MapViewOfFile (shm->shm_handle,
FILE_MAP_ALL_ACCESS,
0, 0, TILE_MAP_SIZE);
/* Verify that we mapped our view */
if (shm->shm_addr)
{
shm->shm_ID = pid;
}
else
{
g_printerr ("MapViewOfFile error: %d... " ERRMSG_SHM_DISABLE,
GetLastError ());
}
}
else
{
g_printerr ("CreateFileMapping error: %d... " ERRMSG_SHM_DISABLE,
GetLastError ());
}
}
#elif defined(USE_POSIX_SHM)
/* Use POSIX shared memory mechanisms for transferring tile data. */
{
gint pid;
gchar shm_handle[32];
gint shm_fd;
/* Our shared memory id will be our process ID */
pid = gimp_get_pid ();
/* From the id, derive the file map name */
g_snprintf (shm_handle, sizeof (shm_handle), "/gimp-shm-%d", pid);
/* Create the file mapping into paging space */
shm_fd = shm_open (shm_handle, O_RDWR | O_CREAT, 0600);
if (shm_fd != -1)
{
if (ftruncate (shm_fd, TILE_MAP_SIZE) != -1)
{
/* Map the shared memory into our address space for use */
shm->shm_addr = (guchar *) mmap (NULL, TILE_MAP_SIZE,
PROT_READ | PROT_WRITE, MAP_SHARED,
shm_fd, 0);
/* Verify that we mapped our view */
if (shm->shm_addr != MAP_FAILED)
{
shm->shm_ID = pid;
}
else
{
g_printerr ("mmap() failed: %s\n" ERRMSG_SHM_DISABLE,
g_strerror (errno));
shm_unlink (shm_handle);
}
}
else
{
g_printerr ("ftruncate() failed: %s\n" ERRMSG_SHM_DISABLE,
g_strerror (errno));
shm_unlink (shm_handle);
}
close (shm_fd);
}
else
{
g_printerr ("shm_open() failed: %s\n" ERRMSG_SHM_DISABLE,
g_strerror (errno));
}
}
#endif
if (shm->shm_ID == -1)
{
g_slice_free (GimpPlugInShm, shm);
shm = NULL;
}
else
{
GIMP_LOG (SHM, "attached shared memory segment ID = %d", shm->shm_ID);
}
return shm;
}
