8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse
2025-08-23 21:04:19 +02:00 · 2017-09-12 19:03:39 +02:00 · 2017-09-12 19:03:39 +02:00 · 3789983e89
commit 3789983e89
parent 270fe13182
56923 changed files with 3 additions and 15727 deletions
--- a/src/hotspot/os/bsd/jvm_bsd.cpp
+++ b/src/hotspot/os/bsd/jvm_bsd.cpp
@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 1999, 2015, 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.
+ *
+ * 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
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "prims/jvm.h"
+#include "runtime/interfaceSupport.hpp"
+#include "runtime/osThread.hpp"
+
+#include <signal.h>
+
+
+// sun.misc.Signal ///////////////////////////////////////////////////////////
+// Signal code is mostly copied from classic vm, signals_md.c   1.4 98/08/23
+/*
+ * This function is included primarily as a debugging aid. If Java is
+ * running in a console window, then pressing <CTRL-\\> will cause
+ * the current state of all active threads and monitors to be written
+ * to the console window.
+ */
+
+JVM_ENTRY_NO_ENV(void*, JVM_RegisterSignal(jint sig, void* handler))
+  // Copied from classic vm
+  // signals_md.c       1.4 98/08/23
+  void* newHandler = handler == (void *)2
+                   ? os::user_handler()
+                   : handler;
+  switch (sig) {
+    /* The following are already used by the VM. */
+    case SIGFPE:
+    case SIGILL:
+    case SIGSEGV:
+
+    /* The following signal is used by the VM to dump thread stacks unless
+       ReduceSignalUsage is set, in which case the user is allowed to set
+       his own _native_ handler for this signal; thus, in either case,
+       we do not allow JVM_RegisterSignal to change the handler. */
+    case BREAK_SIGNAL:
+      return (void *)-1;
+
+    /* The following signals are used for Shutdown Hooks support. However, if
+       ReduceSignalUsage (-Xrs) is set, Shutdown Hooks must be invoked via
+       System.exit(), Java is not allowed to use these signals, and the the
+       user is allowed to set his own _native_ handler for these signals and
+       invoke System.exit() as needed. Terminator.setup() is avoiding
+       registration of these signals when -Xrs is present.
+       - If the HUP signal is ignored (from the nohup) command, then Java
+         is not allowed to use this signal.
+     */
+
+    case SHUTDOWN1_SIGNAL:
+    case SHUTDOWN2_SIGNAL:
+    case SHUTDOWN3_SIGNAL:
+      if (ReduceSignalUsage) return (void*)-1;
+      if (os::Bsd::is_sig_ignored(sig)) return (void*)1;
+  }
+
+  void* oldHandler = os::signal(sig, newHandler);
+  if (oldHandler == os::user_handler()) {
+      return (void *)2;
+  } else {
+      return oldHandler;
+  }
+JVM_END
+
+
+JVM_ENTRY_NO_ENV(jboolean, JVM_RaiseSignal(jint sig))
+  if (ReduceSignalUsage) {
+    // do not allow SHUTDOWN1_SIGNAL,SHUTDOWN2_SIGNAL,SHUTDOWN3_SIGNAL,
+    // BREAK_SIGNAL to be raised when ReduceSignalUsage is set, since
+    // no handler for them is actually registered in JVM or via
+    // JVM_RegisterSignal.
+    if (sig == SHUTDOWN1_SIGNAL || sig == SHUTDOWN2_SIGNAL ||
+        sig == SHUTDOWN3_SIGNAL || sig == BREAK_SIGNAL) {
+      return JNI_FALSE;
+    }
+  }
+  else if ((sig == SHUTDOWN1_SIGNAL || sig == SHUTDOWN2_SIGNAL ||
+            sig == SHUTDOWN3_SIGNAL) && os::Bsd::is_sig_ignored(sig)) {
+    // do not allow SHUTDOWN1_SIGNAL to be raised when SHUTDOWN1_SIGNAL
+    // is ignored, since no handler for them is actually registered in JVM
+    // or via JVM_RegisterSignal.
+    // This also applies for SHUTDOWN2_SIGNAL and SHUTDOWN3_SIGNAL
+    return JNI_FALSE;
+  }
+
+  os::signal_raise(sig);
+  return JNI_TRUE;
+JVM_END
+