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Diffstat (limited to 'gcc-4.2.1/libjava/classpath/vm/reference/java/lang/VMRuntime.java')
| -rw-r--r-- | gcc-4.2.1/libjava/classpath/vm/reference/java/lang/VMRuntime.java | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/gcc-4.2.1/libjava/classpath/vm/reference/java/lang/VMRuntime.java b/gcc-4.2.1/libjava/classpath/vm/reference/java/lang/VMRuntime.java deleted file mode 100644 index b685b3512..000000000 --- a/gcc-4.2.1/libjava/classpath/vm/reference/java/lang/VMRuntime.java +++ /dev/null @@ -1,192 +0,0 @@ -/* VMRuntime.java -- VM interface to Runtime - Copyright (C) 2003 Free Software Foundation - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath 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 for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - -package java.lang; - -import java.io.File; -import java.io.IOException; - -/** - * VMRuntime represents the interface to the Virtual Machine. - * - * @author Jeroen Frijters - */ -final class VMRuntime -{ - /** - * No instance is ever created. - */ - private VMRuntime() - { - } - - /** - * Returns the number of available processors currently available to the - * virtual machine. This number may change over time; so a multi-processor - * program want to poll this to determine maximal resource usage. - * - * @return the number of processors available, at least 1 - */ - static native int availableProcessors(); - - /** - * Find out how much memory is still free for allocating Objects on the heap. - * - * @return the number of bytes of free memory for more Objects - */ - static native long freeMemory(); - - /** - * Find out how much memory total is available on the heap for allocating - * Objects. - * - * @return the total number of bytes of memory for Objects - */ - static native long totalMemory(); - - /** - * Returns the maximum amount of memory the virtual machine can attempt to - * use. This may be <code>Long.MAX_VALUE</code> if there is no inherent - * limit (or if you really do have a 8 exabyte memory!). - * - * @return the maximum number of bytes the virtual machine will attempt - * to allocate - */ - static native long maxMemory(); - - /** - * Run the garbage collector. This method is more of a suggestion than - * anything. All this method guarantees is that the garbage collector will - * have "done its best" by the time it returns. Notice that garbage - * collection takes place even without calling this method. - */ - static native void gc(); - - /** - * Run finalization on all Objects that are waiting to be finalized. Again, - * a suggestion, though a stronger one than {@link #gc()}. This calls the - * <code>finalize</code> method of all objects waiting to be collected. - * - * @see #finalize() - */ - static native void runFinalization(); - - /** - * Run finalization on all finalizable Objects (even live ones). This - * should only be called immediately prior to VM termination. - * - * @see #finalize() - */ - static native void runFinalizationForExit(); - - /** - * Tell the VM to trace every bytecode instruction that executes (print out - * a trace of it). No guarantees are made as to where it will be printed, - * and the VM is allowed to ignore this request. - * - * @param on whether to turn instruction tracing on - */ - static native void traceInstructions(boolean on); - - /** - * Tell the VM to trace every method call that executes (print out a trace - * of it). No guarantees are made as to where it will be printed, and the - * VM is allowed to ignore this request. - * - * @param on whether to turn method tracing on - */ - static native void traceMethodCalls(boolean on); - - /** - * Native method that actually sets the finalizer setting. - * - * @param value whether to run finalizers on exit - */ - static native void runFinalizersOnExit(boolean value); - - /** - * Native method that actually shuts down the virtual machine. - * - * @param status the status to end the process with - */ - static native void exit(int status); - - /** - * Load a file. If it has already been loaded, do nothing. The name has - * already been mapped to a true filename. - * - * @param filename the file to load - * @param loader class loader, or <code>null</code> for the boot loader - * @return 0 on failure, nonzero on success - */ - static native int nativeLoad(String filename, ClassLoader loader); - - /** - * Map a system-independent "short name" to the full file name. - * - * @param libname the short version of the library name - * @return the full filename - */ - static native String mapLibraryName(String libname); - - /** - * Execute a process. The command line has already been tokenized, and - * the environment should contain name=value mappings. If directory is null, - * use the current working directory; otherwise start the process in that - * directory. If env is null, then the new process should inherit - * the environment of this process. - * - * @param cmd the non-null command tokens - * @param env the environment setup - * @param dir the directory to use, may be null - * @return the newly created process - * @throws NullPointerException if cmd or env have null elements - */ - static Process exec(String[] cmd, String[] env, File dir) - throws IOException { - return VMProcess.exec(cmd, env, dir); - } - - /** - * This method is called by Runtime.addShutdownHook() when it is - * called for the first time. It enables the VM to lazily setup - * an exit handler, should it so desire. - */ - static void enableShutdownHooks() - { - } -} // class VMRuntime |