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src/java.base/share/classes/java/lang/Runtime.java
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*** 30,42 ****
import sun.reflect.CallerSensitive;
import sun.reflect.Reflection;
/**
* Every Java application has a single instance of class
! * <code>Runtime</code> that allows the application to interface with
* the environment in which the application is running. The current
! * runtime can be obtained from the <code>getRuntime</code> method.
* <p>
* An application cannot create its own instance of this class.
*
* @author unascribed
* @see java.lang.Runtime#getRuntime()
--- 30,42 ----
import sun.reflect.CallerSensitive;
import sun.reflect.Reflection;
/**
* Every Java application has a single instance of class
! * {@code Runtime} that allows the application to interface with
* the environment in which the application is running. The current
! * runtime can be obtained from the {@code getRuntime} method.
* <p>
* An application cannot create its own instance of this class.
*
* @author unascribed
* @see java.lang.Runtime#getRuntime()
*** 46,59 ****
public class Runtime {
private static Runtime currentRuntime = new Runtime();
/**
* Returns the runtime object associated with the current Java application.
! * Most of the methods of class <code>Runtime</code> are instance
* methods and must be invoked with respect to the current runtime object.
*
! * @return the <code>Runtime</code> object associated with the current
* Java application.
*/
public static Runtime getRuntime() {
return currentRuntime;
}
--- 46,59 ----
public class Runtime {
private static Runtime currentRuntime = new Runtime();
/**
* Returns the runtime object associated with the current Java application.
! * Most of the methods of class {@code Runtime} are instance
* methods and must be invoked with respect to the current runtime object.
*
! * @return the {@code Runtime} object associated with the current
* Java application.
*/
public static Runtime getRuntime() {
return currentRuntime;
}
*** 80,99 ****
* block indefinitely. If shutdown hooks have already been run and on-exit
* finalization has been enabled then this method halts the virtual machine
* with the given status code if the status is nonzero; otherwise, it
* blocks indefinitely.
*
! * <p> The <tt>{@link System#exit(int) System.exit}</tt> method is the
* conventional and convenient means of invoking this method.
*
* @param status
* Termination status. By convention, a nonzero status code
* indicates abnormal termination.
*
* @throws SecurityException
! * If a security manager is present and its <tt>{@link
! * SecurityManager#checkExit checkExit}</tt> method does not permit
* exiting with the specified status
*
* @see java.lang.SecurityException
* @see java.lang.SecurityManager#checkExit(int)
* @see #addShutdownHook
--- 80,99 ----
* block indefinitely. If shutdown hooks have already been run and on-exit
* finalization has been enabled then this method halts the virtual machine
* with the given status code if the status is nonzero; otherwise, it
* blocks indefinitely.
*
! * <p> The {@link System#exit(int) System.exit} method is the
* conventional and convenient means of invoking this method.
*
* @param status
* Termination status. By convention, a nonzero status code
* indicates abnormal termination.
*
* @throws SecurityException
! * If a security manager is present and its {@link
! * SecurityManager#checkExit checkExit} method does not permit
* exiting with the specified status
*
* @see java.lang.SecurityException
* @see java.lang.SecurityManager#checkExit(int)
* @see #addShutdownHook
*** 116,130 ****
* of events:
*
* <ul>
*
* <li> The program <i>exits</i> normally, when the last non-daemon
! * thread exits or when the <tt>{@link #exit exit}</tt> (equivalently,
* {@link System#exit(int) System.exit}) method is invoked, or
*
* <li> The virtual machine is <i>terminated</i> in response to a
! * user interrupt, such as typing <tt>^C</tt>, or a system-wide event,
* such as user logoff or system shutdown.
*
* </ul>
*
* <p> A <i>shutdown hook</i> is simply an initialized but unstarted
--- 116,130 ----
* of events:
*
* <ul>
*
* <li> The program <i>exits</i> normally, when the last non-daemon
! * thread exits or when the {@link #exit exit} (equivalently,
* {@link System#exit(int) System.exit}) method is invoked, or
*
* <li> The virtual machine is <i>terminated</i> in response to a
! * user interrupt, such as typing {@literal ^C}, or a system-wide event,
* such as user logoff or system shutdown.
*
* </ul>
*
* <p> A <i>shutdown hook</i> is simply an initialized but unstarted
*** 132,152 ****
* start all registered shutdown hooks in some unspecified order and let
* them run concurrently. When all the hooks have finished it will then
* run all uninvoked finalizers if finalization-on-exit has been enabled.
* Finally, the virtual machine will halt. Note that daemon threads will
* continue to run during the shutdown sequence, as will non-daemon threads
! * if shutdown was initiated by invoking the <tt>{@link #exit exit}</tt>
! * method.
*
* <p> Once the shutdown sequence has begun it can be stopped only by
! * invoking the <tt>{@link #halt halt}</tt> method, which forcibly
* terminates the virtual machine.
*
* <p> Once the shutdown sequence has begun it is impossible to register a
* new shutdown hook or de-register a previously-registered hook.
* Attempting either of these operations will cause an
! * <tt>{@link IllegalStateException}</tt> to be thrown.
*
* <p> Shutdown hooks run at a delicate time in the life cycle of a virtual
* machine and should therefore be coded defensively. They should, in
* particular, be written to be thread-safe and to avoid deadlocks insofar
* as possible. They should also not rely blindly upon services that may
--- 132,151 ----
* start all registered shutdown hooks in some unspecified order and let
* them run concurrently. When all the hooks have finished it will then
* run all uninvoked finalizers if finalization-on-exit has been enabled.
* Finally, the virtual machine will halt. Note that daemon threads will
* continue to run during the shutdown sequence, as will non-daemon threads
! * if shutdown was initiated by invoking the {@link #exit exit} method.
*
* <p> Once the shutdown sequence has begun it can be stopped only by
! * invoking the {@link #halt halt} method, which forcibly
* terminates the virtual machine.
*
* <p> Once the shutdown sequence has begun it is impossible to register a
* new shutdown hook or de-register a previously-registered hook.
* Attempting either of these operations will cause an
! * {@link IllegalStateException} to be thrown.
*
* <p> Shutdown hooks run at a delicate time in the life cycle of a virtual
* machine and should therefore be coded defensively. They should, in
* particular, be written to be thread-safe and to avoid deadlocks insofar
* as possible. They should also not rely blindly upon services that may
*** 154,191 ****
* the process of shutting down. Attempts to use other thread-based
* services such as the AWT event-dispatch thread, for example, may lead to
* deadlocks.
*
* <p> Shutdown hooks should also finish their work quickly. When a
! * program invokes <tt>{@link #exit exit}</tt> the expectation is
* that the virtual machine will promptly shut down and exit. When the
* virtual machine is terminated due to user logoff or system shutdown the
* underlying operating system may only allow a fixed amount of time in
* which to shut down and exit. It is therefore inadvisable to attempt any
* user interaction or to perform a long-running computation in a shutdown
* hook.
*
* <p> Uncaught exceptions are handled in shutdown hooks just as in any
! * other thread, by invoking the <tt>{@link ThreadGroup#uncaughtException
! * uncaughtException}</tt> method of the thread's <tt>{@link
! * ThreadGroup}</tt> object. The default implementation of this method
! * prints the exception's stack trace to <tt>{@link System#err}</tt> and
* terminates the thread; it does not cause the virtual machine to exit or
* halt.
*
* <p> In rare circumstances the virtual machine may <i>abort</i>, that is,
* stop running without shutting down cleanly. This occurs when the
* virtual machine is terminated externally, for example with the
! * <tt>SIGKILL</tt> signal on Unix or the <tt>TerminateProcess</tt> call on
* Microsoft Windows. The virtual machine may also abort if a native
* method goes awry by, for example, corrupting internal data structures or
* attempting to access nonexistent memory. If the virtual machine aborts
* then no guarantee can be made about whether or not any shutdown hooks
* will be run.
*
* @param hook
! * An initialized but unstarted <tt>{@link Thread}</tt> object
*
* @throws IllegalArgumentException
* If the specified hook has already been registered,
* or if it can be determined that the hook is already running or
* has already been run
--- 153,190 ----
* the process of shutting down. Attempts to use other thread-based
* services such as the AWT event-dispatch thread, for example, may lead to
* deadlocks.
*
* <p> Shutdown hooks should also finish their work quickly. When a
! * program invokes {@link #exit exit} the expectation is
* that the virtual machine will promptly shut down and exit. When the
* virtual machine is terminated due to user logoff or system shutdown the
* underlying operating system may only allow a fixed amount of time in
* which to shut down and exit. It is therefore inadvisable to attempt any
* user interaction or to perform a long-running computation in a shutdown
* hook.
*
* <p> Uncaught exceptions are handled in shutdown hooks just as in any
! * other thread, by invoking the {@link ThreadGroup#uncaughtException
! * uncaughtException} method of the thread's {@link
! * ThreadGroup} object. The default implementation of this method
! * prints the exception's stack trace to {@link System#err} and
* terminates the thread; it does not cause the virtual machine to exit or
* halt.
*
* <p> In rare circumstances the virtual machine may <i>abort</i>, that is,
* stop running without shutting down cleanly. This occurs when the
* virtual machine is terminated externally, for example with the
! * {@code SIGKILL} signal on Unix or the {@code TerminateProcess} call on
* Microsoft Windows. The virtual machine may also abort if a native
* method goes awry by, for example, corrupting internal data structures or
* attempting to access nonexistent memory. If the virtual machine aborts
* then no guarantee can be made about whether or not any shutdown hooks
* will be run.
*
* @param hook
! * An initialized but unstarted {@link Thread} object
*
* @throws IllegalArgumentException
* If the specified hook has already been registered,
* or if it can be determined that the hook is already running or
* has already been run
*** 194,204 ****
* If the virtual machine is already in the process
* of shutting down
*
* @throws SecurityException
* If a security manager is present and it denies
! * <tt>{@link RuntimePermission}("shutdownHooks")</tt>
*
* @see #removeShutdownHook
* @see #halt(int)
* @see #exit(int)
* @since 1.3
--- 193,203 ----
* If the virtual machine is already in the process
* of shutting down
*
* @throws SecurityException
* If a security manager is present and it denies
! * {@link RuntimePermission}("shutdownHooks")
*
* @see #removeShutdownHook
* @see #halt(int)
* @see #exit(int)
* @since 1.3
*** 210,233 ****
}
ApplicationShutdownHooks.add(hook);
}
/**
! * De-registers a previously-registered virtual-machine shutdown hook. <p>
*
* @param hook the hook to remove
! * @return <tt>true</tt> if the specified hook had previously been
! * registered and was successfully de-registered, <tt>false</tt>
* otherwise.
*
* @throws IllegalStateException
* If the virtual machine is already in the process of shutting
* down
*
* @throws SecurityException
* If a security manager is present and it denies
! * <tt>{@link RuntimePermission}("shutdownHooks")</tt>
*
* @see #addShutdownHook
* @see #exit(int)
* @since 1.3
*/
--- 209,232 ----
}
ApplicationShutdownHooks.add(hook);
}
/**
! * De-registers a previously-registered virtual-machine shutdown hook.
*
* @param hook the hook to remove
! * @return {@code true} if the specified hook had previously been
! * registered and was successfully de-registered, {@code false}
* otherwise.
*
* @throws IllegalStateException
* If the virtual machine is already in the process of shutting
* down
*
* @throws SecurityException
* If a security manager is present and it denies
! * {@link RuntimePermission}("shutdownHooks")
*
* @see #addShutdownHook
* @see #exit(int)
* @since 1.3
*/
*** 242,267 ****
/**
* Forcibly terminates the currently running Java virtual machine. This
* method never returns normally.
*
* <p> This method should be used with extreme caution. Unlike the
! * <tt>{@link #exit exit}</tt> method, this method does not cause shutdown
* hooks to be started and does not run uninvoked finalizers if
* finalization-on-exit has been enabled. If the shutdown sequence has
* already been initiated then this method does not wait for any running
* shutdown hooks or finalizers to finish their work.
*
* @param status
* Termination status. By convention, a nonzero status code
! * indicates abnormal termination. If the <tt>{@link Runtime#exit
! * exit}</tt> (equivalently, <tt>{@link System#exit(int)
! * System.exit}</tt>) method has already been invoked then this
* status code will override the status code passed to that method.
*
* @throws SecurityException
! * If a security manager is present and its <tt>{@link
! * SecurityManager#checkExit checkExit}</tt> method does not permit
* an exit with the specified status
*
* @see #exit
* @see #addShutdownHook
* @see #removeShutdownHook
--- 241,266 ----
/**
* Forcibly terminates the currently running Java virtual machine. This
* method never returns normally.
*
* <p> This method should be used with extreme caution. Unlike the
! * {@link #exit exit} method, this method does not cause shutdown
* hooks to be started and does not run uninvoked finalizers if
* finalization-on-exit has been enabled. If the shutdown sequence has
* already been initiated then this method does not wait for any running
* shutdown hooks or finalizers to finish their work.
*
* @param status
* Termination status. By convention, a nonzero status code
! * indicates abnormal termination. If the {@link Runtime#exit
! * exit} (equivalently, {@link System#exit(int)
! * System.exit}) method has already been invoked then this
* status code will override the status code passed to that method.
*
* @throws SecurityException
! * If a security manager is present and its {@link
! * SecurityManager#checkExit checkExit} method does not permit
* an exit with the specified status
*
* @see #exit
* @see #addShutdownHook
* @see #removeShutdownHook
*** 280,301 ****
* finalizers of all objects that have finalizers that have not yet been
* automatically invoked are to be run before the Java runtime exits.
* By default, finalization on exit is disabled.
*
* <p>If there is a security manager,
! * its <code>checkExit</code> method is first called
* with 0 as its argument to ensure the exit is allowed.
* This could result in a SecurityException.
*
* @param value true to enable finalization on exit, false to disable
* @deprecated This method is inherently unsafe. It may result in
* finalizers being called on live objects while other threads are
* concurrently manipulating those objects, resulting in erratic
* behavior or deadlock.
*
* @throws SecurityException
! * if a security manager exists and its <code>checkExit</code>
* method doesn't allow the exit.
*
* @see java.lang.Runtime#exit(int)
* @see java.lang.Runtime#gc()
* @see java.lang.SecurityManager#checkExit(int)
--- 279,300 ----
* finalizers of all objects that have finalizers that have not yet been
* automatically invoked are to be run before the Java runtime exits.
* By default, finalization on exit is disabled.
*
* <p>If there is a security manager,
! * its {@code checkExit} method is first called
* with 0 as its argument to ensure the exit is allowed.
* This could result in a SecurityException.
*
* @param value true to enable finalization on exit, false to disable
* @deprecated This method is inherently unsafe. It may result in
* finalizers being called on live objects while other threads are
* concurrently manipulating those objects, resulting in erratic
* behavior or deadlock.
*
* @throws SecurityException
! * if a security manager exists and its {@code checkExit}
* method doesn't allow the exit.
*
* @see java.lang.Runtime#exit(int)
* @see java.lang.Runtime#gc()
* @see java.lang.SecurityManager#checkExit(int)
*** 316,328 ****
/**
* Executes the specified string command in a separate process.
*
* <p>This is a convenience method. An invocation of the form
! * <tt>exec(command)</tt>
* behaves in exactly the same way as the invocation
! * <tt>{@link #exec(String, String[], File) exec}(command, null, null)</tt>.
*
* @param command a specified system command.
*
* @return A new {@link Process} object for managing the subprocess
*
--- 315,327 ----
/**
* Executes the specified string command in a separate process.
*
* <p>This is a convenience method. An invocation of the form
! * {@code exec(command)}
* behaves in exactly the same way as the invocation
! * {@link #exec(String, String[], File) exec}{@code (command, null, null)}.
*
* @param command a specified system command.
*
* @return A new {@link Process} object for managing the subprocess
*
*** 333,346 ****
*
* @throws IOException
* If an I/O error occurs
*
* @throws NullPointerException
! * If <code>command</code> is <code>null</code>
*
* @throws IllegalArgumentException
! * If <code>command</code> is empty
*
* @see #exec(String[], String[], File)
* @see ProcessBuilder
*/
public Process exec(String command) throws IOException {
--- 332,345 ----
*
* @throws IOException
* If an I/O error occurs
*
* @throws NullPointerException
! * If {@code command} is {@code null}
*
* @throws IllegalArgumentException
! * If {@code command} is empty
*
* @see #exec(String[], String[], File)
* @see ProcessBuilder
*/
public Process exec(String command) throws IOException {
*** 350,369 ****
/**
* Executes the specified string command in a separate process with the
* specified environment.
*
* <p>This is a convenience method. An invocation of the form
! * <tt>exec(command, envp)</tt>
* behaves in exactly the same way as the invocation
! * <tt>{@link #exec(String, String[], File) exec}(command, envp, null)</tt>.
*
* @param command a specified system command.
*
* @param envp array of strings, each element of which
* has environment variable settings in the format
* <i>name</i>=<i>value</i>, or
! * <tt>null</tt> if the subprocess should inherit
* the environment of the current process.
*
* @return A new {@link Process} object for managing the subprocess
*
* @throws SecurityException
--- 349,368 ----
/**
* Executes the specified string command in a separate process with the
* specified environment.
*
* <p>This is a convenience method. An invocation of the form
! * {@code exec(command, envp)}
* behaves in exactly the same way as the invocation
! * {@link #exec(String, String[], File) exec}{@code (command, envp, null)}.
*
* @param command a specified system command.
*
* @param envp array of strings, each element of which
* has environment variable settings in the format
* <i>name</i>=<i>value</i>, or
! * {@code null} if the subprocess should inherit
* the environment of the current process.
*
* @return A new {@link Process} object for managing the subprocess
*
* @throws SecurityException
*** 373,387 ****
*
* @throws IOException
* If an I/O error occurs
*
* @throws NullPointerException
! * If <code>command</code> is <code>null</code>,
! * or one of the elements of <code>envp</code> is <code>null</code>
*
* @throws IllegalArgumentException
! * If <code>command</code> is empty
*
* @see #exec(String[], String[], File)
* @see ProcessBuilder
*/
public Process exec(String command, String[] envp) throws IOException {
--- 372,386 ----
*
* @throws IOException
* If an I/O error occurs
*
* @throws NullPointerException
! * If {@code command} is {@code null},
! * or one of the elements of {@code envp} is {@code null}
*
* @throws IllegalArgumentException
! * If {@code command} is empty
*
* @see #exec(String[], String[], File)
* @see ProcessBuilder
*/
public Process exec(String command, String[] envp) throws IOException {
*** 391,423 ****
/**
* Executes the specified string command in a separate process with the
* specified environment and working directory.
*
* <p>This is a convenience method. An invocation of the form
! * <tt>exec(command, envp, dir)</tt>
* behaves in exactly the same way as the invocation
! * <tt>{@link #exec(String[], String[], File) exec}(cmdarray, envp, dir)</tt>,
! * where <code>cmdarray</code> is an array of all the tokens in
! * <code>command</code>.
*
! * <p>More precisely, the <code>command</code> string is broken
* into tokens using a {@link StringTokenizer} created by the call
! * <code>new {@link StringTokenizer}(command)</code> with no
* further modification of the character categories. The tokens
* produced by the tokenizer are then placed in the new string
! * array <code>cmdarray</code>, in the same order.
*
* @param command a specified system command.
*
* @param envp array of strings, each element of which
* has environment variable settings in the format
* <i>name</i>=<i>value</i>, or
! * <tt>null</tt> if the subprocess should inherit
* the environment of the current process.
*
* @param dir the working directory of the subprocess, or
! * <tt>null</tt> if the subprocess should inherit
* the working directory of the current process.
*
* @return A new {@link Process} object for managing the subprocess
*
* @throws SecurityException
--- 390,422 ----
/**
* Executes the specified string command in a separate process with the
* specified environment and working directory.
*
* <p>This is a convenience method. An invocation of the form
! * {@code exec(command, envp, dir)}
* behaves in exactly the same way as the invocation
! * {@link #exec(String[], String[], File) exec}{@code (cmdarray, envp, dir)},
! * where {@code cmdarray} is an array of all the tokens in
! * {@code command}.
*
! * <p>More precisely, the {@code command} string is broken
* into tokens using a {@link StringTokenizer} created by the call
! * {@code new {@link StringTokenizer}(command)} with no
* further modification of the character categories. The tokens
* produced by the tokenizer are then placed in the new string
! * array {@code cmdarray}, in the same order.
*
* @param command a specified system command.
*
* @param envp array of strings, each element of which
* has environment variable settings in the format
* <i>name</i>=<i>value</i>, or
! * {@code null} if the subprocess should inherit
* the environment of the current process.
*
* @param dir the working directory of the subprocess, or
! * {@code null} if the subprocess should inherit
* the working directory of the current process.
*
* @return A new {@link Process} object for managing the subprocess
*
* @throws SecurityException
*** 427,441 ****
*
* @throws IOException
* If an I/O error occurs
*
* @throws NullPointerException
! * If <code>command</code> is <code>null</code>,
! * or one of the elements of <code>envp</code> is <code>null</code>
*
* @throws IllegalArgumentException
! * If <code>command</code> is empty
*
* @see ProcessBuilder
* @since 1.3
*/
public Process exec(String command, String[] envp, File dir)
--- 426,440 ----
*
* @throws IOException
* If an I/O error occurs
*
* @throws NullPointerException
! * If {@code command} is {@code null},
! * or one of the elements of {@code envp} is {@code null}
*
* @throws IllegalArgumentException
! * If {@code command} is empty
*
* @see ProcessBuilder
* @since 1.3
*/
public Process exec(String command, String[] envp, File dir)
*** 452,464 ****
/**
* Executes the specified command and arguments in a separate process.
*
* <p>This is a convenience method. An invocation of the form
! * <tt>exec(cmdarray)</tt>
* behaves in exactly the same way as the invocation
! * <tt>{@link #exec(String[], String[], File) exec}(cmdarray, null, null)</tt>.
*
* @param cmdarray array containing the command to call and
* its arguments.
*
* @return A new {@link Process} object for managing the subprocess
--- 451,463 ----
/**
* Executes the specified command and arguments in a separate process.
*
* <p>This is a convenience method. An invocation of the form
! * {@code exec(cmdarray)}
* behaves in exactly the same way as the invocation
! * {@link #exec(String[], String[], File) exec}{@code (cmdarray, null, null)}.
*
* @param cmdarray array containing the command to call and
* its arguments.
*
* @return A new {@link Process} object for managing the subprocess
*** 470,485 ****
*
* @throws IOException
* If an I/O error occurs
*
* @throws NullPointerException
! * If <code>cmdarray</code> is <code>null</code>,
! * or one of the elements of <code>cmdarray</code> is <code>null</code>
*
* @throws IndexOutOfBoundsException
! * If <code>cmdarray</code> is an empty array
! * (has length <code>0</code>)
*
* @see ProcessBuilder
*/
public Process exec(String cmdarray[]) throws IOException {
return exec(cmdarray, null, null);
--- 469,484 ----
*
* @throws IOException
* If an I/O error occurs
*
* @throws NullPointerException
! * If {@code cmdarray} is {@code null},
! * or one of the elements of {@code cmdarray} is {@code null}
*
* @throws IndexOutOfBoundsException
! * If {@code cmdarray} is an empty array
! * (has length {@code 0})
*
* @see ProcessBuilder
*/
public Process exec(String cmdarray[]) throws IOException {
return exec(cmdarray, null, null);
*** 488,508 ****
/**
* Executes the specified command and arguments in a separate process
* with the specified environment.
*
* <p>This is a convenience method. An invocation of the form
! * <tt>exec(cmdarray, envp)</tt>
* behaves in exactly the same way as the invocation
! * <tt>{@link #exec(String[], String[], File) exec}(cmdarray, envp, null)</tt>.
*
* @param cmdarray array containing the command to call and
* its arguments.
*
* @param envp array of strings, each element of which
* has environment variable settings in the format
* <i>name</i>=<i>value</i>, or
! * <tt>null</tt> if the subprocess should inherit
* the environment of the current process.
*
* @return A new {@link Process} object for managing the subprocess
*
* @throws SecurityException
--- 487,507 ----
/**
* Executes the specified command and arguments in a separate process
* with the specified environment.
*
* <p>This is a convenience method. An invocation of the form
! * {@code exec(cmdarray, envp)}
* behaves in exactly the same way as the invocation
! * {@link #exec(String[], String[], File) exec}{@code (cmdarray, envp, null)}.
*
* @param cmdarray array containing the command to call and
* its arguments.
*
* @param envp array of strings, each element of which
* has environment variable settings in the format
* <i>name</i>=<i>value</i>, or
! * {@code null} if the subprocess should inherit
* the environment of the current process.
*
* @return A new {@link Process} object for managing the subprocess
*
* @throws SecurityException
*** 512,528 ****
*
* @throws IOException
* If an I/O error occurs
*
* @throws NullPointerException
! * If <code>cmdarray</code> is <code>null</code>,
! * or one of the elements of <code>cmdarray</code> is <code>null</code>,
! * or one of the elements of <code>envp</code> is <code>null</code>
*
* @throws IndexOutOfBoundsException
! * If <code>cmdarray</code> is an empty array
! * (has length <code>0</code>)
*
* @see ProcessBuilder
*/
public Process exec(String[] cmdarray, String[] envp) throws IOException {
return exec(cmdarray, envp, null);
--- 511,527 ----
*
* @throws IOException
* If an I/O error occurs
*
* @throws NullPointerException
! * If {@code cmdarray} is {@code null},
! * or one of the elements of {@code cmdarray} is {@code null},
! * or one of the elements of {@code envp} is {@code null}
*
* @throws IndexOutOfBoundsException
! * If {@code cmdarray} is an empty array
! * (has length {@code 0})
*
* @see ProcessBuilder
*/
public Process exec(String[] cmdarray, String[] envp) throws IOException {
return exec(cmdarray, envp, null);
*** 531,569 ****
/**
* Executes the specified command and arguments in a separate process with
* the specified environment and working directory.
*
! * <p>Given an array of strings <code>cmdarray</code>, representing the
! * tokens of a command line, and an array of strings <code>envp</code>,
* representing "environment" variable settings, this method creates
* a new process in which to execute the specified command.
*
! * <p>This method checks that <code>cmdarray</code> is a valid operating
* system command. Which commands are valid is system-dependent,
* but at the very least the command must be a non-empty list of
* non-null strings.
*
! * <p>If <tt>envp</tt> is <tt>null</tt>, the subprocess inherits the
* environment settings of the current process.
*
* <p>A minimal set of system dependent environment variables may
* be required to start a process on some operating systems.
* As a result, the subprocess may inherit additional environment variable
* settings beyond those in the specified environment.
*
* <p>{@link ProcessBuilder#start()} is now the preferred way to
* start a process with a modified environment.
*
! * <p>The working directory of the new subprocess is specified by <tt>dir</tt>.
! * If <tt>dir</tt> is <tt>null</tt>, the subprocess inherits the
* current working directory of the current process.
*
* <p>If a security manager exists, its
* {@link SecurityManager#checkExec checkExec}
* method is invoked with the first component of the array
! * <code>cmdarray</code> as its argument. This may result in a
* {@link SecurityException} being thrown.
*
* <p>Starting an operating system process is highly system-dependent.
* Among the many things that can go wrong are:
* <ul>
--- 530,568 ----
/**
* Executes the specified command and arguments in a separate process with
* the specified environment and working directory.
*
! * <p>Given an array of strings {@code cmdarray}, representing the
! * tokens of a command line, and an array of strings {@code envp},
* representing "environment" variable settings, this method creates
* a new process in which to execute the specified command.
*
! * <p>This method checks that {@code cmdarray} is a valid operating
* system command. Which commands are valid is system-dependent,
* but at the very least the command must be a non-empty list of
* non-null strings.
*
! * <p>If {@code envp} is {@code null}, the subprocess inherits the
* environment settings of the current process.
*
* <p>A minimal set of system dependent environment variables may
* be required to start a process on some operating systems.
* As a result, the subprocess may inherit additional environment variable
* settings beyond those in the specified environment.
*
* <p>{@link ProcessBuilder#start()} is now the preferred way to
* start a process with a modified environment.
*
! * <p>The working directory of the new subprocess is specified by {@code dir}.
! * If {@code dir} is {@code null}, the subprocess inherits the
* current working directory of the current process.
*
* <p>If a security manager exists, its
* {@link SecurityManager#checkExec checkExec}
* method is invoked with the first component of the array
! * {@code cmdarray} as its argument. This may result in a
* {@link SecurityException} being thrown.
*
* <p>Starting an operating system process is highly system-dependent.
* Among the many things that can go wrong are:
* <ul>
*** 584,598 ****
* its arguments.
*
* @param envp array of strings, each element of which
* has environment variable settings in the format
* <i>name</i>=<i>value</i>, or
! * <tt>null</tt> if the subprocess should inherit
* the environment of the current process.
*
* @param dir the working directory of the subprocess, or
! * <tt>null</tt> if the subprocess should inherit
* the working directory of the current process.
*
* @return A new {@link Process} object for managing the subprocess
*
* @throws SecurityException
--- 583,597 ----
* its arguments.
*
* @param envp array of strings, each element of which
* has environment variable settings in the format
* <i>name</i>=<i>value</i>, or
! * {@code null} if the subprocess should inherit
* the environment of the current process.
*
* @param dir the working directory of the subprocess, or
! * {@code null} if the subprocess should inherit
* the working directory of the current process.
*
* @return A new {@link Process} object for managing the subprocess
*
* @throws SecurityException
*** 605,621 ****
*
* @throws IOException
* If an I/O error occurs
*
* @throws NullPointerException
! * If <code>cmdarray</code> is <code>null</code>,
! * or one of the elements of <code>cmdarray</code> is <code>null</code>,
! * or one of the elements of <code>envp</code> is <code>null</code>
*
* @throws IndexOutOfBoundsException
! * If <code>cmdarray</code> is an empty array
! * (has length <code>0</code>)
*
* @see ProcessBuilder
* @since 1.3
*/
public Process exec(String[] cmdarray, String[] envp, File dir)
--- 604,620 ----
*
* @throws IOException
* If an I/O error occurs
*
* @throws NullPointerException
! * If {@code cmdarray} is {@code null},
! * or one of the elements of {@code cmdarray} is {@code null},
! * or one of the elements of {@code envp} is {@code null}
*
* @throws IndexOutOfBoundsException
! * If {@code cmdarray} is an empty array
! * (has length {@code 0})
*
* @see ProcessBuilder
* @since 1.3
*/
public Process exec(String[] cmdarray, String[] envp, File dir)
*** 641,652 ****
public native int availableProcessors();
/**
* Returns the amount of free memory in the Java Virtual Machine.
* Calling the
! * <code>gc</code> method may result in increasing the value returned
! * by <code>freeMemory.</code>
*
* @return an approximation to the total amount of memory currently
* available for future allocated objects, measured in bytes.
*/
public native long freeMemory();
--- 640,651 ----
public native int availableProcessors();
/**
* Returns the amount of free memory in the Java Virtual Machine.
* Calling the
! * {@code gc} method may result in increasing the value returned
! * by {@code freeMemory.}
*
* @return an approximation to the total amount of memory currently
* available for future allocated objects, measured in bytes.
*/
public native long freeMemory();
*** 681,694 ****
* effort toward recycling unused objects in order to make the memory
* they currently occupy available for quick reuse. When control
* returns from the method call, the virtual machine has made
* its best effort to recycle all discarded objects.
* <p>
! * The name <code>gc</code> stands for "garbage
* collector". The virtual machine performs this recycling
* process automatically as needed, in a separate thread, even if the
! * <code>gc</code> method is not invoked explicitly.
* <p>
* The method {@link System#gc()} is the conventional and convenient
* means of invoking this method.
*/
public native void gc();
--- 680,693 ----
* effort toward recycling unused objects in order to make the memory
* they currently occupy available for quick reuse. When control
* returns from the method call, the virtual machine has made
* its best effort to recycle all discarded objects.
* <p>
! * The name {@code gc} stands for "garbage
* collector". The virtual machine performs this recycling
* process automatically as needed, in a separate thread, even if the
! * {@code gc} method is not invoked explicitly.
* <p>
* The method {@link System#gc()} is the conventional and convenient
* means of invoking this method.
*/
public native void gc();
*** 697,715 ****
private static native void runFinalization0();
/**
* Runs the finalization methods of any objects pending finalization.
* Calling this method suggests that the Java virtual machine expend
! * effort toward running the <code>finalize</code> methods of objects
! * that have been found to be discarded but whose <code>finalize</code>
* methods have not yet been run. When control returns from the
* method call, the virtual machine has made a best effort to
* complete all outstanding finalizations.
* <p>
* The virtual machine performs the finalization process
* automatically as needed, in a separate thread, if the
! * <code>runFinalization</code> method is not invoked explicitly.
* <p>
* The method {@link System#runFinalization()} is the conventional
* and convenient means of invoking this method.
*
* @see java.lang.Object#finalize()
--- 696,714 ----
private static native void runFinalization0();
/**
* Runs the finalization methods of any objects pending finalization.
* Calling this method suggests that the Java virtual machine expend
! * effort toward running the {@code finalize} methods of objects
! * that have been found to be discarded but whose {@code finalize}
* methods have not yet been run. When control returns from the
* method call, the virtual machine has made a best effort to
* complete all outstanding finalizations.
* <p>
* The virtual machine performs the finalization process
* automatically as needed, in a separate thread, if the
! * {@code runFinalization} method is not invoked explicitly.
* <p>
* The method {@link System#runFinalization()} is the conventional
* and convenient means of invoking this method.
*
* @see java.lang.Object#finalize()
*** 718,768 ****
runFinalization0();
}
/**
* Enables/Disables tracing of instructions.
! * If the <code>boolean</code> argument is <code>true</code>, this
* method suggests that the Java virtual machine emit debugging
* information for each instruction in the virtual machine as it
* is executed. The format of this information, and the file or other
* output stream to which it is emitted, depends on the host environment.
* The virtual machine may ignore this request if it does not support
* this feature. The destination of the trace output is system
* dependent.
* <p>
! * If the <code>boolean</code> argument is <code>false</code>, this
* method causes the virtual machine to stop performing the
* detailed instruction trace it is performing.
*
! * @param on <code>true</code> to enable instruction tracing;
! * <code>false</code> to disable this feature.
*/
public void traceInstructions(boolean on) { }
/**
* Enables/Disables tracing of method calls.
! * If the <code>boolean</code> argument is <code>true</code>, this
* method suggests that the Java virtual machine emit debugging
* information for each method in the virtual machine as it is
* called. The format of this information, and the file or other output
* stream to which it is emitted, depends on the host environment. The
* virtual machine may ignore this request if it does not support
* this feature.
* <p>
* Calling this method with argument false suggests that the
* virtual machine cease emitting per-call debugging information.
*
! * @param on <code>true</code> to enable instruction tracing;
! * <code>false</code> to disable this feature.
*/
public void traceMethodCalls(boolean on) { }
/**
* Loads the native library specified by the filename argument. The filename
* argument must be an absolute path name.
* (for example
! * <code>Runtime.getRuntime().load("/home/avh/lib/libX11.so");</code>).
*
* If the filename argument, when stripped of any platform-specific library
* prefix, path, and file extension, indicates a library whose name is,
* for example, L, and a native library called L is statically linked
* with the VM, then the JNI_OnLoad_L function exported by the library
--- 717,767 ----
runFinalization0();
}
/**
* Enables/Disables tracing of instructions.
! * If the {@code boolean} argument is {@code true}, this
* method suggests that the Java virtual machine emit debugging
* information for each instruction in the virtual machine as it
* is executed. The format of this information, and the file or other
* output stream to which it is emitted, depends on the host environment.
* The virtual machine may ignore this request if it does not support
* this feature. The destination of the trace output is system
* dependent.
* <p>
! * If the {@code boolean} argument is {@code false}, this
* method causes the virtual machine to stop performing the
* detailed instruction trace it is performing.
*
! * @param on {@code true} to enable instruction tracing;
! * {@code false} to disable this feature.
*/
public void traceInstructions(boolean on) { }
/**
* Enables/Disables tracing of method calls.
! * If the {@code boolean} argument is {@code true}, this
* method suggests that the Java virtual machine emit debugging
* information for each method in the virtual machine as it is
* called. The format of this information, and the file or other output
* stream to which it is emitted, depends on the host environment. The
* virtual machine may ignore this request if it does not support
* this feature.
* <p>
* Calling this method with argument false suggests that the
* virtual machine cease emitting per-call debugging information.
*
! * @param on {@code true} to enable instruction tracing;
! * {@code false} to disable this feature.
*/
public void traceMethodCalls(boolean on) { }
/**
* Loads the native library specified by the filename argument. The filename
* argument must be an absolute path name.
* (for example
! * {@code Runtime.getRuntime().load("/home/avh/lib/libX11.so");}).
*
* If the filename argument, when stripped of any platform-specific library
* prefix, path, and file extension, indicates a library whose name is,
* for example, L, and a native library called L is statically linked
* with the VM, then the JNI_OnLoad_L function exported by the library
*** 771,782 ****
* system. See the JNI Specification for more details.
*
* Otherwise, the filename argument is mapped to a native library image in
* an implementation-dependent manner.
* <p>
! * First, if there is a security manager, its <code>checkLink</code>
! * method is called with the <code>filename</code> as its argument.
* This may result in a security exception.
* <p>
* This is similar to the method {@link #loadLibrary(String)}, but it
* accepts a general file name as an argument rather than just a library
* name, allowing any file of native code to be loaded.
--- 770,781 ----
* system. See the JNI Specification for more details.
*
* Otherwise, the filename argument is mapped to a native library image in
* an implementation-dependent manner.
* <p>
! * First, if there is a security manager, its {@code checkLink}
! * method is called with the {@code filename} as its argument.
* This may result in a security exception.
* <p>
* This is similar to the method {@link #loadLibrary(String)}, but it
* accepts a general file name as an argument rather than just a library
* name, allowing any file of native code to be loaded.
*** 784,801 ****
* The method {@link System#load(String)} is the conventional and
* convenient means of invoking this method.
*
* @param filename the file to load.
* @exception SecurityException if a security manager exists and its
! * <code>checkLink</code> method doesn't allow
* loading of the specified dynamic library
* @exception UnsatisfiedLinkError if either the filename is not an
* absolute path name, the native library is not statically
* linked with the VM, or the library cannot be mapped to
* a native library image by the host system.
! * @exception NullPointerException if <code>filename</code> is
! * <code>null</code>
* @see java.lang.Runtime#getRuntime()
* @see java.lang.SecurityException
* @see java.lang.SecurityManager#checkLink(java.lang.String)
*/
@CallerSensitive
--- 783,800 ----
* The method {@link System#load(String)} is the conventional and
* convenient means of invoking this method.
*
* @param filename the file to load.
* @exception SecurityException if a security manager exists and its
! * {@code checkLink} method doesn't allow
* loading of the specified dynamic library
* @exception UnsatisfiedLinkError if either the filename is not an
* absolute path name, the native library is not statically
* linked with the VM, or the library cannot be mapped to
* a native library image by the host system.
! * @exception NullPointerException if {@code filename} is
! * {@code null}
* @see java.lang.Runtime#getRuntime()
* @see java.lang.SecurityException
* @see java.lang.SecurityManager#checkLink(java.lang.String)
*/
@CallerSensitive
*** 814,843 ****
}
ClassLoader.loadLibrary(fromClass, filename, true);
}
/**
! * Loads the native library specified by the <code>libname</code>
! * argument. The <code>libname</code> argument must not contain any platform
* specific prefix, file extension or path. If a native library
! * called <code>libname</code> is statically linked with the VM, then the
! * JNI_OnLoad_<code>libname</code> function exported by the library is invoked.
* See the JNI Specification for more details.
*
* Otherwise, the libname argument is loaded from a system library
* location and mapped to a native library image in an implementation-
* dependent manner.
* <p>
! * First, if there is a security manager, its <code>checkLink</code>
! * method is called with the <code>libname</code> as its argument.
* This may result in a security exception.
* <p>
* The method {@link System#loadLibrary(String)} is the conventional
* and convenient means of invoking this method. If native
* methods are to be used in the implementation of a class, a standard
* strategy is to put the native code in a library file (call it
! * <code>LibFile</code>) and then to put a static initializer:
* <blockquote><pre>
* static { System.loadLibrary("LibFile"); }
* </pre></blockquote>
* within the class declaration. When the class is loaded and
* initialized, the necessary native code implementation for the native
--- 813,842 ----
}
ClassLoader.loadLibrary(fromClass, filename, true);
}
/**
! * Loads the native library specified by the {@code libname}
! * argument. The {@code libname} argument must not contain any platform
* specific prefix, file extension or path. If a native library
! * called {@code libname} is statically linked with the VM, then the
! * JNI_OnLoad_{@code libname} function exported by the library is invoked.
* See the JNI Specification for more details.
*
* Otherwise, the libname argument is loaded from a system library
* location and mapped to a native library image in an implementation-
* dependent manner.
* <p>
! * First, if there is a security manager, its {@code checkLink}
! * method is called with the {@code libname} as its argument.
* This may result in a security exception.
* <p>
* The method {@link System#loadLibrary(String)} is the conventional
* and convenient means of invoking this method. If native
* methods are to be used in the implementation of a class, a standard
* strategy is to put the native code in a library file (call it
! * {@code LibFile}) and then to put a static initializer:
* <blockquote><pre>
* static { System.loadLibrary("LibFile"); }
* </pre></blockquote>
* within the class declaration. When the class is loaded and
* initialized, the necessary native code implementation for the native
*** 846,863 ****
* If this method is called more than once with the same library
* name, the second and subsequent calls are ignored.
*
* @param libname the name of the library.
* @exception SecurityException if a security manager exists and its
! * <code>checkLink</code> method doesn't allow
* loading of the specified dynamic library
* @exception UnsatisfiedLinkError if either the libname argument
* contains a file path, the native library is not statically
* linked with the VM, or the library cannot be mapped to a
* native library image by the host system.
! * @exception NullPointerException if <code>libname</code> is
! * <code>null</code>
* @see java.lang.SecurityException
* @see java.lang.SecurityManager#checkLink(java.lang.String)
*/
@CallerSensitive
public void loadLibrary(String libname) {
--- 845,862 ----
* If this method is called more than once with the same library
* name, the second and subsequent calls are ignored.
*
* @param libname the name of the library.
* @exception SecurityException if a security manager exists and its
! * {@code checkLink} method doesn't allow
* loading of the specified dynamic library
* @exception UnsatisfiedLinkError if either the libname argument
* contains a file path, the native library is not statically
* linked with the VM, or the library cannot be mapped to a
* native library image by the host system.
! * @exception NullPointerException if {@code libname} is
! * {@code null}
* @see java.lang.SecurityException
* @see java.lang.SecurityManager#checkLink(java.lang.String)
*/
@CallerSensitive
public void loadLibrary(String libname) {
*** 876,886 ****
ClassLoader.loadLibrary(fromClass, libname, false);
}
/**
* Creates a localized version of an input stream. This method takes
! * an <code>InputStream</code> and returns an <code>InputStream</code>
* equivalent to the argument in all respects except that it is
* localized: as characters in the local character set are read from
* the stream, they are automatically converted from the local
* character set to Unicode.
* <p>
--- 875,885 ----
ClassLoader.loadLibrary(fromClass, libname, false);
}
/**
* Creates a localized version of an input stream. This method takes
! * an {@code InputStream} and returns an {@code InputStream}
* equivalent to the argument in all respects except that it is
* localized: as characters in the local character set are read from
* the stream, they are automatically converted from the local
* character set to Unicode.
* <p>
*** 892,924 ****
* @see java.io.InputStream
* @see java.io.BufferedReader#BufferedReader(java.io.Reader)
* @see java.io.InputStreamReader#InputStreamReader(java.io.InputStream)
* @deprecated As of JDK 1.1, the preferred way to translate a byte
* stream in the local encoding into a character stream in Unicode is via
! * the <code>InputStreamReader</code> and <code>BufferedReader</code>
* classes.
*/
@Deprecated
public InputStream getLocalizedInputStream(InputStream in) {
return in;
}
/**
* Creates a localized version of an output stream. This method
! * takes an <code>OutputStream</code> and returns an
! * <code>OutputStream</code> equivalent to the argument in all respects
* except that it is localized: as Unicode characters are written to
* the stream, they are automatically converted to the local
* character set.
* <p>
* If the argument is already a localized stream, it may be returned
* as the result.
*
* @deprecated As of JDK 1.1, the preferred way to translate a
* Unicode character stream into a byte stream in the local encoding is via
! * the <code>OutputStreamWriter</code>, <code>BufferedWriter</code>, and
! * <code>PrintWriter</code> classes.
*
* @param out OutputStream to localize
* @return a localized output stream
* @see java.io.OutputStream
* @see java.io.BufferedWriter#BufferedWriter(java.io.Writer)
--- 891,923 ----
* @see java.io.InputStream
* @see java.io.BufferedReader#BufferedReader(java.io.Reader)
* @see java.io.InputStreamReader#InputStreamReader(java.io.InputStream)
* @deprecated As of JDK 1.1, the preferred way to translate a byte
* stream in the local encoding into a character stream in Unicode is via
! * the {@code InputStreamReader} and {@code BufferedReader}
* classes.
*/
@Deprecated
public InputStream getLocalizedInputStream(InputStream in) {
return in;
}
/**
* Creates a localized version of an output stream. This method
! * takes an {@code OutputStream} and returns an
! * {@code OutputStream} equivalent to the argument in all respects
* except that it is localized: as Unicode characters are written to
* the stream, they are automatically converted to the local
* character set.
* <p>
* If the argument is already a localized stream, it may be returned
* as the result.
*
* @deprecated As of JDK 1.1, the preferred way to translate a
* Unicode character stream into a byte stream in the local encoding is via
! * the {@code OutputStreamWriter}, {@code BufferedWriter}, and
! * {@code PrintWriter} classes.
*
* @param out OutputStream to localize
* @return a localized output stream
* @see java.io.OutputStream
* @see java.io.BufferedWriter#BufferedWriter(java.io.Writer)
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