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/* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2001 Aladdin Enterprises. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: iplugin.c,v 1.5 2004/08/04 19:36:13 stefan Exp $ */
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/* Plugin manager */
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#include "malloc_.h"
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#include "string_.h"
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#include "ghost.h"
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#include "gxalloc.h"
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#include "ierrors.h"
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#include "ialloc.h"
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#include "iplugin.h"
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#include "icstate.h"
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/* Plugin list is being build in raw memory pool,
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because it is irrelevant to PS virtual memory.
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At least it must live during alloc_restore_all, allowing
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plugins to handle the finalization of objects they manage.
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*/
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extern_i_plugin_table();
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private void *i_plugin_mem_alloc(i_plugin_client_memory *mem, unsigned int nbytes, const char *cname)
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{ gs_memory_t *mem_raw = mem->client_data;
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return mem_raw->procs.alloc_bytes_immovable(mem_raw, nbytes, cname);
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}
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private void i_plugin_mem_free(i_plugin_client_memory *mem, void *data, const char *cname)
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{ gs_memory_t *mem_raw = mem->client_data;
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mem_raw->procs.free_object(mem_raw, data, cname);
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}
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void i_plugin_make_memory(i_plugin_client_memory *mem, gs_memory_t *mem_raw)
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{ mem->client_data = mem_raw;
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mem->alloc = i_plugin_mem_alloc;
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mem->free = i_plugin_mem_free;
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}
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int i_plugin_init(i_ctx_t *i_ctx_p)
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{ gs_memory_t *mem_raw = i_ctx_p->memory.current->non_gc_memory;
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const i_plugin_instantiation_proc *p = i_plugin_table;
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i_plugin_holder *h;
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int code;
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i_plugin_client_memory client_mem;
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i_plugin_make_memory(&client_mem, mem_raw);
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for (; *p != 0; p++) {
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i_plugin_instance *instance = 0;
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code = (*p)(i_ctx_p, &client_mem, &instance);
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if (code != 0)
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return code;
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h = (i_plugin_holder *)gs_alloc_bytes_immovable(mem_raw, sizeof(i_plugin_holder), "plugin_holder");
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if (h == 0)
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return_error(e_Fatal);
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h->I = instance;
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h->next = i_ctx_p->plugin_list;
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i_ctx_p->plugin_list = h;
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}
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return 0;
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}
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void i_plugin_finit(gs_memory_t *mem_raw, i_plugin_holder *list)
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{ i_plugin_client_memory client_mem;
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i_plugin_make_memory(&client_mem, mem_raw);
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while (list != 0) {
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i_plugin_holder *h = list;
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list = h->next;
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h->I->d->finit(h->I, &client_mem);
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gs_free_object(mem_raw, h, "plugin_holder");
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}
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}
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i_plugin_holder * i_plugin_get_list(i_ctx_t *i_ctx_p)
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{ return i_ctx_p->plugin_list;
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}
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i_plugin_instance *i_plugin_find(i_ctx_t *i_ctx_p, const char *type, const char *subtype)
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{ i_plugin_holder *h = i_ctx_p->plugin_list;
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for (; h != 0; h = h->next) {
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i_plugin_instance *I = h->I;
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if (!strcmp(I->d->type, type) && !strcmp(I->d->subtype, subtype))
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return I;
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}
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return NULL;
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}
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/* todo: define plugin enumerator by 'type' */
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