/* <int> .getdevice <device> */
static int
zgetdevice(i_ctx_t *i_ctx_p)
{
os_ptr op = osp;
const gx_device *dev;
check_type(*op, t_integer);
if (op->value.intval != (int)(op->value.intval))
return_error(e_rangecheck); /* won't fit in an int */
dev = gs_getdevice((int)(op->value.intval));
if (dev == 0) /* index out of range */
return_error(e_rangecheck);
/* Device prototypes are read-only; */
/* the cast is logically unnecessary. */
make_tav(op, t_device, avm_foreign | a_readonly, pdevice,
(gx_device *) dev);
return 0;
}
/* Set up and start the render threads */
static int
clist_setup_render_threads(gx_device *dev, int y)
{
gx_device_printer *pdev = (gx_device_printer *)dev;
gx_device_clist *cldev = (gx_device_clist *)dev;
gx_device_clist_common *cdev = (gx_device_clist_common *)cldev;
gx_device_clist_reader *crdev = &cldev->reader;
gs_memory_t *mem = cdev->bandlist_memory;
gx_device *protodev;
gs_c_param_list paramlist;
int i, code, band;
int band_count = cdev->nbands;
char fmode[4];
crdev->num_render_threads = pdev->num_render_threads_requested;
if(gs_debug[':'] != 0)
dprintf1("%% %d rendering threads requested.\n", pdev->num_render_threads_requested);
if (crdev->num_render_threads > band_count)
crdev->num_render_threads = band_count; /* don't bother starting more threads than bands */
/* Allocate and initialize an array of thread control structures */
crdev->render_threads = (clist_render_thread_control_t *)
gs_alloc_byte_array(mem, crdev->num_render_threads,
sizeof(clist_render_thread_control_t), "clist_setup_render_threads" );
/* fallback to non-threaded if allocation fails */
if (crdev->render_threads == NULL) {
eprintf(" VMerror prevented threads from starting.\n");
return_error(gs_error_VMerror);
}
memset(crdev->render_threads, 0, crdev->num_render_threads *
sizeof(clist_render_thread_control_t));
crdev->main_thread_data = cdev->data; /* save data area */
/* Based on the line number requested, decide the order of band rendering */
/* Almost all devices go in increasing line order (except the bmp* devices ) */
crdev->thread_lookahead_direction = (y < (cdev->height - 1)) ? 1 : -1;
band = y / crdev->page_info.band_params.BandHeight;
/* Close the files so we can open them in multiple threads */
if ((code = cdev->page_info.io_procs->fclose(cdev->page_cfile, cdev->page_cfname, false)) < 0 ||
(code = cdev->page_info.io_procs->fclose(cdev->page_bfile, cdev->page_bfname, false)) < 0) {
gs_free_object(mem, crdev->render_threads, "clist_setup_render_threads");
crdev->render_threads = NULL;
eprintf("Closing clist files prevented threads from starting.\n");
return_error(gs_error_unknownerror); /* shouldn't happen */
}
cdev->page_cfile = cdev->page_bfile = NULL;
strcpy(fmode, "r"); /* read access for threads */
strncat(fmode, gp_fmode_binary_suffix, 1);
/* Find the prototype for this device (needed so we can copy from it) */
for (i=0; (protodev = (gx_device *)gs_getdevice(i)) != NULL; i++)
if (strcmp(protodev->dname, dev->dname) == 0)
break;
if (protodev == NULL) {
eprintf("Could not find prototype device. Rendering threads not started.\n");
return gs_error_rangecheck;
}
gs_c_param_list_write(¶mlist, mem);
if ((code = gs_getdeviceparams(dev, (gs_param_list *)¶mlist)) < 0) {
eprintf1("Error getting device params, code=%d. Rendering threads not started.\n", code);
return code;
}
/* Loop creating the devices and semaphores for each thread, then start them */
for (i=0; (i < crdev->num_render_threads) && (band >= 0) && (band < band_count);
i++, band += crdev->thread_lookahead_direction) {
gx_device *ndev;
gx_device_clist *ncldev;
gx_device_clist_common *ncdev;
clist_render_thread_control_t *thread = &(crdev->render_threads[i]);
/* Every thread will have a 'chunk allocator' to reduce the interaction
* with the 'base' allocator which has 'mutex' (locking) protection.
* This improves performance of the threads.
*/
if ((code = gs_memory_chunk_wrap(&(thread->memory), mem )) < 0) {
eprintf1("chunk_wrap returned error code: %d\n", code);
break;
}
thread->band = -1; /* a value that won't match any valid band */
if ((code = gs_copydevice((gx_device **) &ndev, protodev, thread->memory)) < 0) {
code = 0; /* even though we failed, no cleanup needed */
break;
}
ncldev = (gx_device_clist *)ndev;
ncdev = (gx_device_clist_common *)ndev;
gx_device_fill_in_procs(ndev);
((gx_device_printer *)ncdev)->buffer_memory = ncdev->memory =
ncdev->bandlist_memory = thread->memory;
gs_c_param_list_read(¶mlist);
ndev->PageCount = dev->PageCount; /* copy to prevent mismatch error */
if ((code = gs_putdeviceparams(ndev, (gs_param_list *)¶mlist)) < 0)
break;
ncdev->page_uses_transparency = cdev->page_uses_transparency;
/* gdev_prn_allocate_memory sets the clist for writing, creating new files.
* We need to unlink those files and open the main thread's files, then
* reset the clist state for reading/rendering
*/
if ((code = gdev_prn_allocate_memory(ndev, NULL, ndev->width, ndev->height)) < 0)
break;
thread->cdev = ndev;
/* close and unlink the temp files just created */
cdev->page_info.io_procs->fclose(ncdev->page_cfile, ncdev->page_cfname, true);
cdev->page_info.io_procs->fclose(ncdev->page_bfile, ncdev->page_bfname, true);
/* open the main thread's files for this thread */
if ((code=cdev->page_info.io_procs->fopen(cdev->page_cfname, fmode, &ncdev->page_cfile,
thread->memory, thread->memory, true)) < 0 ||
(code=cdev->page_info.io_procs->fopen(cdev->page_bfname, fmode, &ncdev->page_bfile,
thread->memory, thread->memory, false)) < 0)
break;
clist_render_init(ncldev); /* Initialize clist device for reading */
ncdev->page_bfile_end_pos = cdev->page_bfile_end_pos;
/* create the buf device for this thread, and allocate the semaphores */
if ((code = gdev_create_buf_device(cdev->buf_procs.create_buf_device,
&(thread->bdev), cdev->target,
band*crdev->page_band_height, NULL,
thread->memory, clist_get_band_complexity(dev,y)) < 0))
break;
if ((thread->sema_this = gx_semaphore_alloc(thread->memory)) == NULL ||
(thread->sema_group = gx_semaphore_alloc(thread->memory)) == NULL) {
code = gs_error_VMerror;
break;
}
/* Start thread 'i' to do band */
if ((code = clist_start_render_thread(dev, i, band)) < 0)
break;
}
gs_c_param_list_release(¶mlist);
/* If the code < 0, the last thread creation failed -- clean it up */
if (code < 0) {
/* the following relies on 'free' ignoring NULL pointers */
gx_semaphore_free(crdev->render_threads[i].sema_group);
gx_semaphore_free(crdev->render_threads[i].sema_this);
if (crdev->render_threads[i].bdev != NULL)
cdev->buf_procs.destroy_buf_device(crdev->render_threads[i].bdev);
if (crdev->render_threads[i].cdev != NULL) {
gx_device_clist_common *thread_cdev = (gx_device_clist_common *)crdev->render_threads[i].cdev;
/* Close the file handles, but don't delete (unlink) the files */
thread_cdev->page_info.io_procs->fclose(thread_cdev->page_bfile, thread_cdev->page_bfname, false);
thread_cdev->page_info.io_procs->fclose(thread_cdev->page_cfile, thread_cdev->page_cfname, false);
thread_cdev->do_not_open_or_close_bandfiles = true; /* we already closed the files */
gdev_prn_free_memory((gx_device *)thread_cdev);
gs_free_object(crdev->render_threads[i].memory, thread_cdev,
"clist_setup_render_threads");
}
if (crdev->render_threads[i].memory != NULL)
gs_memory_chunk_release(crdev->render_threads[i].memory);
}
/* If we weren't able to create at least one thread, punt */
/* Although a single thread isn't any more efficient, the */
/* machinery still works, so that's OK. */
if (i == 0) {
if (crdev->render_threads[0].memory != NULL)
gs_memory_chunk_release(crdev->render_threads[0].memory);
gs_free_object(mem, crdev->render_threads, "clist_setup_render_threads");
crdev->render_threads = NULL;
/* restore the file pointers */
if (cdev->page_cfile == NULL) {
char fmode[4];
strcpy(fmode, "a+"); /* file already exists and we want to re-use it */
strncat(fmode, gp_fmode_binary_suffix, 1);
cdev->page_info.io_procs->fopen(cdev->page_cfname, fmode, &cdev->page_cfile,
mem, cdev->bandlist_memory, true);
cdev->page_info.io_procs->fseek(cdev->page_cfile, 0, SEEK_SET, cdev->page_cfname);
cdev->page_info.io_procs->fopen(cdev->page_bfname, fmode, &cdev->page_bfile,
mem, cdev->bandlist_memory, false);
cdev->page_info.io_procs->fseek(cdev->page_bfile, 0, SEEK_SET, cdev->page_bfname);
}
eprintf1("Rendering threads not started, code=%d.\n", code);
return_error(code);
}
crdev->num_render_threads = i;
crdev->curr_render_thread = 0;
if(gs_debug[':'] != 0)
dprintf1("%% Using %d rendering threads\n", i);
return 0;
}
/* Exported for use by background printing. */
gx_device *
setup_device_and_mem_for_thread(gs_memory_t *chunk_base_mem, gx_device *dev, bool bg_print, gsicc_link_cache_t **cachep)
{
int i, code;
char fmode[4];
gs_memory_t *thread_mem;
gx_device_clist *cldev = (gx_device_clist *)dev;
gx_device_printer *pdev = (gx_device_printer *)dev;
gx_device_clist_common *cdev = (gx_device_clist_common *)cldev;
gx_device *ndev;
gx_device_clist *ncldev;
gx_device_clist_common *ncdev;
gx_device_printer *npdev;
gx_device *protodev;
gs_c_param_list paramlist;
gs_devn_params *pclist_devn_params;
/* Every thread will have a 'chunk allocator' to reduce the interaction
* with the 'base' allocator which has 'mutex' (locking) protection.
* This improves performance of the threads.
*/
if ((code = gs_memory_chunk_wrap(&(thread_mem), chunk_base_mem )) < 0) {
emprintf1(dev->memory, "chunk_wrap returned error code: %d\n", code);
return NULL;
}
/* Find the prototype for this device (needed so we can copy from it) */
for (i=0; (protodev = (gx_device *)gs_getdevice(i)) != NULL; i++)
if (strcmp(protodev->dname, dev->dname) == 0)
break;
/* Clone the device from the prototype device */
if (protodev == NULL ||
(code = gs_copydevice((gx_device **) &ndev, protodev, thread_mem)) < 0) {
gs_memory_chunk_release(thread_mem);
return NULL;
}
ncldev = (gx_device_clist *)ndev;
ncdev = (gx_device_clist_common *)ndev;
npdev = (gx_device_printer *)ndev;
gx_device_fill_in_procs(ndev);
((gx_device_printer *)ncdev)->buffer_memory =
ncdev->memory =
ncdev->bandlist_memory =
thread_mem;
ndev->PageCount = dev->PageCount; /* copy to prevent mismatch error */
npdev->file = pdev->file; /* For background printing when doing N copies with %d */
strcpy((npdev->fname), (pdev->fname));
ndev->color_info = dev->color_info; /* copy before putdeviceparams */
ndev->pad = dev->pad;
ndev->log2_align_mod = dev->log2_align_mod;
ndev->is_planar = dev->is_planar;
#if CMM_THREAD_SAFE
ndev->icc_struct = dev->icc_struct; /* Set before put params */
rc_increment(ndev->icc_struct);
#endif
/* get the current device parameters to put into the cloned device */
gs_c_param_list_write(¶mlist, dev->memory);
if ((code = gs_getdeviceparams(dev, (gs_param_list *)¶mlist)) < 0) {
emprintf1(dev->memory,
"Error getting device params, code=%d. Rendering threads not started.\n",
code);
goto out_cleanup;
}
gs_c_param_list_read(¶mlist);
if ((code = gs_putdeviceparams(ndev, (gs_param_list *)¶mlist)) < 0)
goto out_cleanup;
gs_c_param_list_release(¶mlist);
/* In the case of a separation device, we need to make sure we get the
devn params copied over */
pclist_devn_params = dev_proc(dev, ret_devn_params)(dev);
if (pclist_devn_params != NULL) {
code = devn_copy_params(dev, ndev);
if (code < 0) {
#ifdef DEBUG /* suppress a warning on a release build */
gs_note_error(gs_error_VMerror);
#endif
goto out_cleanup;
}
}
/* Also make sure supports_devn is set correctly */
ndev->icc_struct->supports_devn = cdev->icc_struct->supports_devn;
ncdev->page_uses_transparency = cdev->page_uses_transparency;
if_debug3m(gs_debug_flag_icc, cdev->memory,
"[icc] MT clist device = 0x%p profile = 0x%p handle = 0x%p\n",
ncdev,
ncdev->icc_struct->device_profile[0],
ncdev->icc_struct->device_profile[0]->profile_handle);
/* If the device is_planar, then set the flag in the new_device and the procs */
if ((ncdev->is_planar = cdev->is_planar))
gdev_prn_set_procs_planar(ndev);
/* gdev_prn_allocate_memory sets the clist for writing, creating new files.
* We need to unlink those files and open the main thread's files, then
* reset the clist state for reading/rendering
*/
if ((code = gdev_prn_allocate_memory(ndev, NULL, ndev->width, ndev->height)) < 0)
goto out_cleanup;
/* close and unlink the temp files just created */
ncdev->page_info.io_procs->fclose(ncdev->page_info.cfile, ncdev->page_info.cfname, true);
ncdev->page_info.io_procs->fclose(ncdev->page_info.bfile, ncdev->page_info.bfname, true);
ncdev->page_info.cfile = ncdev->page_info.bfile = NULL;
/* open the main thread's files for this thread */
strcpy(fmode, "r"); /* read access for threads */
strncat(fmode, gp_fmode_binary_suffix, 1);
if ((code=cdev->page_info.io_procs->fopen(cdev->page_info.cfname, fmode, &ncdev->page_info.cfile,
thread_mem, thread_mem, true)) < 0 ||
(code=cdev->page_info.io_procs->fopen(cdev->page_info.bfname, fmode, &ncdev->page_info.bfile,
thread_mem, thread_mem, false)) < 0)
goto out_cleanup;
strcpy((ncdev->page_info.cfname), (cdev->page_info.cfname));
strcpy((ncdev->page_info.bfname), (cdev->page_info.bfname));
clist_render_init(ncldev); /* Initialize clist device for reading */
ncdev->page_info.bfile_end_pos = cdev->page_info.bfile_end_pos;
/* The threads are maintained until clist_finish_page. At which
point, the threads are torn down, the master clist reader device
is changed to writer, and the icc_table and the icc_cache_cl freed */
#if CMM_THREAD_SAFE
/* safe to share the link cache */
ncdev->icc_cache_cl = cdev->icc_cache_cl;
rc_increment(cdev->icc_cache_cl, "setup_render_thread");
#else
/* each thread needs its own link cache */
if (cachep != NULL) {
if (*cachep == NULL) {
/* We don't have one cached that we can reuse, so make one. */
if ((*cachep = gsicc_cache_new(thread_mem->thread_safe_memory)) == NULL)
goto out_cleanup;
}
rc_increment(*cachep);
ncdev->icc_cache_cl = *cachep;
} else if ((ncdev->icc_cache_cl = gsicc_cache_new(thread_mem)) == NULL)
goto out_cleanup;
#endif
if (bg_print) {
gx_device_clist_reader *ncrdev = (gx_device_clist_reader *)ncdev;
if (cdev->icc_table != NULL) {
/* This is a background printing thread, so it cannot share the icc_table */
/* since this probably was created with a GC'ed allocator and the bg_print */
/* thread can't deal with the relocation. Free the cdev->icc_table and get */
/* a new one from the clist. */
clist_free_icc_table(cdev->icc_table, cdev->memory);
cdev->icc_table = NULL;
if ((code = clist_read_icctable((gx_device_clist_reader *)ncdev)) < 0)
goto out_cleanup;
}
/* Similarly for the color_usage_array, when the foreground device switches to */
/* writer mode, the foreground's array will be freed. */
if ((code = clist_read_color_usage_array(ncrdev)) < 0)
goto out_cleanup;
} else {
/* Use the same profile table and color usage array in each thread */
ncdev->icc_table = cdev->icc_table; /* OK for multiple rendering threads */
((gx_device_clist_reader *)ncdev)->color_usage_array =
((gx_device_clist_reader *)cdev)->color_usage_array;
}
/* Needed for case when the target has cielab profile and pdf14 device
has a RGB profile stored in the profile list of the clist */
ncdev->trans_dev_icc_hash = cdev->trans_dev_icc_hash;
/* success */
return ndev;
out_cleanup:
/* Close the file handles, but don't delete (unlink) the files */
if (ncdev->page_info.bfile != NULL)
ncdev->page_info.io_procs->fclose(ncdev->page_info.bfile, ncdev->page_info.bfname, false);
if (ncdev->page_info.cfile != NULL)
ncdev->page_info.io_procs->fclose(ncdev->page_info.cfile, ncdev->page_info.cfname, false);
ncdev->do_not_open_or_close_bandfiles = true; /* we already closed the files */
if (ndev != NULL) {
gdev_prn_free_memory(ndev);
gs_free_object(thread_mem, ndev, "setup_device_and_mem_for_thread");
}
gs_memory_chunk_release(thread_mem);
return NULL;
}
