Thread.c

/*
 * Copyright (c) 1994, 2024, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation. Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */

#include"jni.h"
#include"jvm.h"

#include"java_lang_Thread.h"

#defineTHD "Ljava/lang/Thread;"
#defineOBJ "Ljava/lang/Object;"
#defineSTE "Ljava/lang/StackTraceElement;"
#defineSTR "Ljava/lang/String;"

#defineARRAY_LENGTH(a) (sizeof(a)/sizeof(a[0]))

staticJNINativeMethodmethods[] = {
 {"start0", "()V", (void*)&JVM_StartThread},
 {"setPriority0", "(I)V", (void*)&JVM_SetThreadPriority},
 {"yield0", "()V", (void*)&JVM_Yield},
 {"sleepNanos0", "(J)V", (void*)&JVM_SleepNanos},
 {"currentCarrierThread", "()"THD, (void*)&JVM_CurrentCarrierThread},
 {"currentThread", "()"THD, (void*)&JVM_CurrentThread},
 {"setCurrentThread", "("THD")V", (void*)&JVM_SetCurrentThread},
 {"interrupt0", "()V", (void*)&JVM_Interrupt},
 {"holdsLock", "("OBJ")Z", (void*)&JVM_HoldsLock},
 {"getThreads", "()["THD, (void*)&JVM_GetAllThreads},
 {"dumpThreads", "(["THD")[["STE, (void*)&JVM_DumpThreads},
 {"getStackTrace0", "()"OBJ, (void*)&JVM_GetStackTrace},
 {"setNativeName", "("STR")V", (void*)&JVM_SetNativeThreadName},
 {"scopedValueCache", "()["OBJ, (void*)&JVM_ScopedValueCache},
 {"setScopedValueCache", "(["OBJ")V",(void*)&JVM_SetScopedValueCache},
 {"getNextThreadIdOffset", "()J", (void*)&JVM_GetNextThreadIdOffset},
 {"findScopedValueBindings", "()"OBJ, (void*)&JVM_FindScopedValueBindings},
 {"ensureMaterializedForStackWalk",
"("OBJ")V", (void*)&JVM_EnsureMaterializedForStackWalk_func},
};

#undef THD
#undef OBJ
#undef STE
#undef STR

JNIEXPORTvoidJNICALL
Java_java_lang_Thread_registerNatives(JNIEnv*env, jclasscls)
{
 (*env)->RegisterNatives(env, cls, methods, ARRAY_LENGTH(methods));
}

JNIEXPORTvoidJNICALL
Java_java_lang_Thread_clearInterruptEvent(JNIEnv*env, jclasscls)
{
#if defined(_WIN32)
// Need to reset the interrupt event used by Process.waitFor
ResetEvent((HANDLE) JVM_GetThreadInterruptEvent());
#endif
}