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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/jni-libjvm.cc
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Diffstat (limited to 'libjava/jni-libjvm.cc')
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diff --git a/libjava/jni-libjvm.cc b/libjava/jni-libjvm.cc
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+++ b/libjava/jni-libjvm.cc
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+// jni-libjvm.cc - an implementation of the JNI invocation API.
+
+/* Copyright (C) 2006 Free Software Foundation
+
+ This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
+details. */
+
+#include <gcj/cni.h>
+#include <gcj/javaprims.h>
+#include <java-assert.h>
+#include <jvm.h>
+#include <jni.h>
+
+using namespace gcj;
+
+// Forward declarations.
+extern struct JNIInvokeInterface_ _Jv_JNI_InvokeFunctions;
+extern jint JNICALL _Jv_JNI_AttachCurrentThread (JavaVM *vm,
+ void **penv, void *args);
+extern JavaVM *_Jv_the_vm;
+
+jint JNICALL
+JNI_GetDefaultJavaVMInitArgs (void *args)
+{
+ jint version = * (jint *) args;
+ // Here we only support 1.2 and 1.4.
+ if (version != JNI_VERSION_1_2 && version != JNI_VERSION_1_4)
+ return JNI_EVERSION;
+
+ JavaVMInitArgs *ia = reinterpret_cast<JavaVMInitArgs *> (args);
+ ia->version = JNI_VERSION_1_4;
+ ia->nOptions = 0;
+ ia->options = NULL;
+ ia->ignoreUnrecognized = true;
+
+ return 0;
+}
+
+jint JNICALL
+JNI_CreateJavaVM (JavaVM **vm, void **penv, void *args)
+{
+ JvAssert (! _Jv_the_vm);
+
+ jint version = * (jint *) args;
+ // We only support 1.2 and 1.4.
+ if (version != JNI_VERSION_1_2 && version != JNI_VERSION_1_4)
+ return JNI_EVERSION;
+
+ JvVMInitArgs* vm_args = reinterpret_cast<JvVMInitArgs *> (args);
+
+ jint result = _Jv_CreateJavaVM (vm_args);
+ if (result)
+ return result;
+
+ // FIXME: synchronize
+ JavaVM *nvm = (JavaVM *) _Jv_MallocUnchecked (sizeof (JavaVM));
+ if (nvm == NULL)
+ return JNI_ERR;
+ nvm->functions = &_Jv_JNI_InvokeFunctions;
+
+ jint r =_Jv_JNI_AttachCurrentThread (nvm, penv, NULL);
+ if (r < 0)
+ return r;
+
+ _Jv_the_vm = nvm;
+ *vm = _Jv_the_vm;
+
+ return 0;
+}
+
+jint JNICALL
+JNI_GetCreatedJavaVMs (JavaVM **vm_buffer, jsize buf_len, jsize *n_vms)
+{
+ if (buf_len <= 0)
+ return JNI_ERR;
+
+ // We only support a single VM.
+ if (_Jv_the_vm != NULL)
+ {
+ vm_buffer[0] = _Jv_the_vm;
+ *n_vms = 1;
+ }
+ else
+ *n_vms = 0;
+ return 0;
+}