org.bytedeco.javacpp

Class Loader.Helper

java.lang.Object

org.bytedeco.javacpp.Loader.Helper

Enclosing class:

Loader

public static class Loader.Helper
extends Object

Constructor Summary

Constructors

Constructor and Description
Helper()

Method Summary

Modifier and Type	Method and Description
static Object	accessGlobalRef(Pointer globalRef) Returns an Object from the JNI global reference stored in the Pointer.
static Pointer	addressof(String symbol) Returns the address found under the given name in the "dynamic symbol tables" (Linux, Mac OS X, etc) or the "export tables" (Windows) of all libraries loaded, or null if not found.
static void	deleteGlobalRef(Pointer globalRef) Deletes the JNI global reference stored in the Pointer.
static Pointer	getJavaVM() Returns the JavaVM JNI object, as required by some APIs for initialization.
static void	loadGlobal(String filename) Loads all symbols from a library globally, that is dlopen(filename, RTLD_LAZY | RTLD_GLOBAL), or simply by default with LoadLibrary(filename) on Windows.
static Pointer	newGlobalRef(Object object) Returns a JNI global reference stored in a Pointer for the given Object.
static int	totalChips() Returns the number of CPU chips installed according to the operating system, or 0 if unknown.
static int	totalCores() Returns the number of CPU cores usable according to the operating system, or 0 if unknown.
static int	totalProcessors() Returns the number of processors configured according to the operating system, or 0 if unknown.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Helper

public Helper()

Method Detail

totalProcessors

@Name(value="JavaCPP_totalProcessors")
public static int totalProcessors()

Returns the number of processors configured according to the operating system, or 0 if unknown. This value can be greater than Runtime.availableProcessors() and totalCores().

totalCores

@Name(value="JavaCPP_totalCores")
public static int totalCores()

Returns the number of CPU cores usable according to the operating system, or 0 if unknown. For SMT-capable systems, this value may be less than totalProcessors().

totalChips

@Name(value="JavaCPP_totalChips")
public static int totalChips()

Returns the number of CPU chips installed according to the operating system, or 0 if unknown. For multi-core processors, this value may be less than totalCores().

addressof

@Name(value="JavaCPP_addressof")
public static Pointer addressof(String symbol)

Returns the address found under the given name in the "dynamic symbol tables" (Linux, Mac OS X, etc) or the "export tables" (Windows) of all libraries loaded, or null if not found.

loadGlobal

@Name(value="JavaCPP_loadGlobal")
 @Raw(withEnv=true)
public static void loadGlobal(String filename)

Loads all symbols from a library globally, that is dlopen(filename, RTLD_LAZY | RTLD_GLOBAL), or simply by default with LoadLibrary(filename) on Windows. If the library name passed to one of the other load functions in this class ends with "!", this function will get called on them.

getJavaVM

@Name(value="JavaCPP_getJavaVM")
 @Cast(value="JavaVM*")
public static Pointer getJavaVM()

Returns the JavaVM JNI object, as required by some APIs for initialization.

newGlobalRef

@Name(value="JavaCPP_newGlobalRef")
 @Cast(value="jobject")
public static Pointer newGlobalRef(@Raw(withEnv=true)
                                                                                                 Object object)

Returns a JNI global reference stored in a Pointer for the given Object.

accessGlobalRef

@Name(value="JavaCPP_accessGlobalRef")
 @Raw(withEnv=true)
public static Object accessGlobalRef(@Cast(value="jobject")
                                                                                                  Pointer globalRef)

Returns an Object from the JNI global reference stored in the Pointer.

deleteGlobalRef

@Name(value="JavaCPP_deleteGlobalRef")
 @Raw(withEnv=true)
public static void deleteGlobalRef(@Cast(value="jobject")
                                                                                                Pointer globalRef)

Deletes the JNI global reference stored in the Pointer.