31a7b75558
2004-07-11 Bryce McKinlay <mckinlay@redhat.com> PR libgcj/16748 * prims.cc (_Jv_CreateJavaVM): Fix comment. * gnu/gcj/runtime/FinalizerThread.java (init): New. Native. (finalizerReady): Now native. (run): Likewise. (runFinalizers): Removed. * gnu/gcj/runtime/natFinalizerThread.cc (run): Implement here. Use a primitive lock, and don't hold it while running the finalizers. (runFinalizers): Implement. Don't aquire any Java lock. (finalizerReady): Use lock primitives to signal finalizer thread. From-SVN: r84531
63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
// natFinalizerThread.cc - Implementation of FinalizerThread native methods.
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/* Copyright (C) 2001, 2004 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 <jvm.h>
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#include <gnu/gcj/runtime/FinalizerThread.h>
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#include <java-threads.h>
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static _Jv_Mutex_t mutex;
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static _Jv_ConditionVariable_t condition;
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// Initialize lock & condition variable.
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void
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gnu::gcj::runtime::FinalizerThread::init ()
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{
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_Jv_MutexInit (&mutex);
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_Jv_CondInit (&condition);
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}
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// This is called by the GC when a finalizer is ready to be
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// run. It sets a flag and wakes up the finalizer thread. Note
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// that this MUST NOT aquire any Java lock, as this could result in
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// the hash synchronization code being re-entered: the synchronization
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// code itself might need to allocate. See PR 16478.
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void
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gnu::gcj::runtime::FinalizerThread::finalizerReady ()
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{
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#ifdef __JV_NO_THREADS__
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_Jv_RunFinalizers ();
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#else
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_Jv_MutexLock (&mutex);
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finalizer_ready = true;
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_Jv_CondNotify (&condition, &mutex);
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_Jv_MutexUnlock (&mutex);
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#endif
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}
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// Main loop for the finalizer thread.
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void
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gnu::gcj::runtime::FinalizerThread::run ()
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{
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while (true)
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{
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_Jv_MutexLock (&mutex);
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if (! finalizer_ready)
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_Jv_CondWait (&condition, &mutex, 0, 0);
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finalizer_ready = false;
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_Jv_MutexUnlock (&mutex);
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_Jv_RunFinalizers ();
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}
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}
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