121 lines
2.6 KiB
C++
121 lines
2.6 KiB
C++
// natCore -- C++ side of Core
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/* Copyright (C) 2001, 2002, 2003, 2005, 2006 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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/* Author: Anthony Green <green@redhat.com>. */
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#include <config.h>
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#include <gcj/cni.h>
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#include <jvm.h>
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#include <string.h>
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#include <stdlib.h>
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#include <java/lang/NullPointerException.h>
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#include <java/io/IOException.h>
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#include <gnu/gcj/Core.h>
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// List of global core values.
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static _Jv_core_chain *root;
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static void
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default_register_resource (_Jv_core_chain *node)
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{
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node->next = root;
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root = node;
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}
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// This is set only when a lock is held on java.lang.Class.
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// This function is called to handle a new core node.
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void (*_Jv_RegisterCoreHook) (_Jv_core_chain *) = default_register_resource;
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void
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_Jv_RegisterResource (void *vptr)
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{
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char *rptr = (char *) vptr;
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_Jv_core_chain *cc = (_Jv_core_chain *) _Jv_Malloc (sizeof (_Jv_core_chain));
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cc->name_length = ((int *)rptr)[0];
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cc->data_length = ((int *)rptr)[1];
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cc->name = rptr + 2 * sizeof (int);
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cc->data = cc->name + cc->name_length;
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cc->next = NULL;
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(*_Jv_RegisterCoreHook) (cc);
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}
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void
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_Jv_FreeCoreChain (_Jv_core_chain *chain)
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{
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while (chain != NULL)
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{
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_Jv_core_chain *next = chain->next;
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_Jv_Free (chain);
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chain = next;
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}
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}
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_Jv_core_chain *
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_Jv_FindCore (_Jv_core_chain *node, jstring name)
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{
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char *buf = (char *) __builtin_alloca (JvGetStringUTFLength (name) + 1);
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jsize total = JvGetStringUTFRegion (name, 0, name->length(), buf);
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buf[total] = '\0';
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// Usually requests here end up as an absolute URL. We strip the
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// initial `/'.
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if (buf[0] == '/')
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{
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++buf;
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--total;
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}
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while (node)
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{
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if (total == node->name_length
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&& strncmp (buf, node->name, total) == 0)
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return node;
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node = node->next;
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}
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return NULL;
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}
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gnu::gcj::Core *
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_Jv_create_core (_Jv_core_chain *node, jstring name)
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{
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node = _Jv_FindCore (node, name);
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gnu::gcj::Core *core = NULL;
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if (node)
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{
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core = new gnu::gcj::Core ();
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core->ptr = (gnu::gcj::RawData *) node->data;
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core->length = node->data_length;
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}
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return core;
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}
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gnu::gcj::Core *
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gnu::gcj::Core::find (jstring name)
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{
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gnu::gcj::Core *core = _Jv_create_core (root, name);
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return core;
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}
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gnu::gcj::Core *
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gnu::gcj::Core::create (jstring name)
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{
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gnu::gcj::Core *core = _Jv_create_core (root, name);
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if (core == NULL)
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throw new ::java::io::IOException (JvNewStringLatin1 ("can't open core"));
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return core;
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}
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