90 lines
2.0 KiB
C++
90 lines
2.0 KiB
C++
// jni-libjvm.cc - an implementation of the JNI invocation API.
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/* Copyright (C) 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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#include <gcj/cni.h>
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#include <gcj/javaprims.h>
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#include <java-assert.h>
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#include <jvm.h>
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#include <jni.h>
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using namespace gcj;
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// Forward declarations.
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extern struct JNIInvokeInterface_ _Jv_JNI_InvokeFunctions;
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extern jint JNICALL _Jv_JNI_AttachCurrentThread (JavaVM *vm,
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void **penv, void *args);
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extern JavaVM *_Jv_the_vm;
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jint JNICALL
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JNI_GetDefaultJavaVMInitArgs (void *args)
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{
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jint version = * (jint *) args;
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// Here we only support 1.2 and 1.4.
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if (version != JNI_VERSION_1_2 && version != JNI_VERSION_1_4)
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return JNI_EVERSION;
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JavaVMInitArgs *ia = reinterpret_cast<JavaVMInitArgs *> (args);
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ia->version = JNI_VERSION_1_4;
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ia->nOptions = 0;
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ia->options = NULL;
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ia->ignoreUnrecognized = true;
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return 0;
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}
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jint JNICALL
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JNI_CreateJavaVM (JavaVM **vm, void **penv, void *args)
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{
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JvAssert (! _Jv_the_vm);
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jint version = * (jint *) args;
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// We only support 1.2 and 1.4.
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if (version != JNI_VERSION_1_2 && version != JNI_VERSION_1_4)
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return JNI_EVERSION;
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JvVMInitArgs* vm_args = reinterpret_cast<JvVMInitArgs *> (args);
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jint result = _Jv_CreateJavaVM (vm_args);
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if (result)
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return result;
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// FIXME: synchronize
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JavaVM *nvm = (JavaVM *) _Jv_MallocUnchecked (sizeof (JavaVM));
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if (nvm == NULL)
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return JNI_ERR;
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nvm->functions = &_Jv_JNI_InvokeFunctions;
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jint r =_Jv_JNI_AttachCurrentThread (nvm, penv, NULL);
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if (r < 0)
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return r;
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_Jv_the_vm = nvm;
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*vm = _Jv_the_vm;
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return 0;
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}
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jint JNICALL
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JNI_GetCreatedJavaVMs (JavaVM **vm_buffer, jsize buf_len, jsize *n_vms)
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{
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if (buf_len <= 0)
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return JNI_ERR;
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// We only support a single VM.
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if (_Jv_the_vm != NULL)
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{
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vm_buffer[0] = _Jv_the_vm;
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*n_vms = 1;
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}
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else
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*n_vms = 0;
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return 0;
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}
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