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8ec880749f
2003-07-20 Steve Pribyl <steve@netfuel.com.> * gnu/gcj/runtime/natSharedLibLoader.cc (init): `libname' now a String. Put dlerror() message into exception. Include UnsatisfiedLinkError. * gnu/gcj/runtime/SharedLibLoader.java (init): `libname' now a String. Now native. From-SVN: r69622
86 lines
2.0 KiB
C++
86 lines
2.0 KiB
C++
// natSharedLibLoader.cc - Implementation of FirstThread native methods.
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/* Copyright (C) 2001, 2003 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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#include <config.h>
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#include <gcj/cni.h>
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#include <gnu/gcj/runtime/SharedLibLoader.h>
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#include <java/io/IOException.h>
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#include <java/lang/UnsupportedOperationException.h>
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#include <java/lang/UnsatisfiedLinkError.h>
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#ifdef HAVE_DLOPEN
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#include <dlfcn.h>
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/* Only used during dlopen, while having a lock on Class.class. */
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static gnu::gcj::runtime::SharedLibLoader* curLoader;
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typedef void (*ClassHookFunc) (jclass);
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static void
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::register_hook(jclass cls)
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{
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curLoader->registerClass(cls->getName(), cls);
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}
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struct SharedLibDummy
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{
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ClassHookFunc saved;
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SharedLibDummy()
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{
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saved = _Jv_RegisterClassHook;
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}
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~SharedLibDummy()
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{
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_Jv_RegisterClassHook = saved;
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curLoader = NULL;
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}
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};
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#endif
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void
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gnu::gcj::runtime::SharedLibLoader::init(jstring libname, jint flags)
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{
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#ifdef HAVE_DLOPEN
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jint len = _Jv_GetStringUTFLength (libname);
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char lname[len + 1];
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JvGetStringUTFRegion (libname, 0, libname->length(), lname);
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lname[len] = '\0';
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if (flags==0)
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flags = RTLD_LAZY;
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JvSynchronize dummy1(&java::lang::Class::class$);
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SharedLibDummy dummy2;
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curLoader = this;
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_Jv_RegisterClassHook = ::register_hook;
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void *h = dlopen(lname, flags);
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if (h == NULL)
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{
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const char *msg = dlerror();
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jstring str = JvNewStringLatin1 (lname);
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str = str->concat (JvNewStringLatin1 (": "));
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str = str->concat (JvNewStringLatin1 (msg));
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throw new java::lang::UnsatisfiedLinkError (str);
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}
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handler = (gnu::gcj::RawData*) h;
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#else
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const char *msg = "SharedLibLoader is not supported on this platform";
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throw new java::lang::UnsupportedOperationException(JvNewStringLatin1(msg));
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#endif
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}
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void
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gnu::gcj::runtime::SharedLibLoader::finalize()
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{
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#ifdef HAVE_DLOPEN
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dlclose (handler);
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#endif
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}
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