summaryrefslogtreecommitdiffstats
path: root/src/java
diff options
context:
space:
mode:
Diffstat (limited to 'src/java')
-rw-r--r--src/java/jogamp/common/os/DynamicLinkerImpl.java90
-rw-r--r--src/java/jogamp/common/os/PosixDynamicLinkerImpl.java89
2 files changed, 179 insertions, 0 deletions
diff --git a/src/java/jogamp/common/os/DynamicLinkerImpl.java b/src/java/jogamp/common/os/DynamicLinkerImpl.java
new file mode 100644
index 0000000..4686cd2
--- /dev/null
+++ b/src/java/jogamp/common/os/DynamicLinkerImpl.java
@@ -0,0 +1,90 @@
+/**
+ * Copyright 2013 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package jogamp.common.os;
+
+import com.jogamp.common.os.DynamicLinker;
+import com.jogamp.common.util.LongObjectHashMap;
+
+/* pp */ abstract class DynamicLinkerImpl implements DynamicLinker {
+
+ //
+ // Package private scope of class w/ protected native code access
+ // and sealed jogamp.common.* package definition
+ // ensuring no abuse via subclassing.
+ //
+
+ private final LongObjectHashMap libHandle2Name = new LongObjectHashMap( 16 /* initialCapacity */ );
+
+ protected static final class LibRef {
+ public LibRef(String name) {
+ this.name = name;
+ this.refCount = 1;
+ }
+ public final int incrRefCount() { return ++refCount; }
+ public final int decrRefCount() { return --refCount; }
+ public final int getRefCount() { return refCount; }
+
+ public final String getName() { return name; }
+ public final String toString() { return "LibRef["+name+", refCount "+refCount+"]"; }
+
+ private final String name;
+ private int refCount;
+ }
+
+ protected final synchronized LibRef getLibRef(long handle) {
+ return (LibRef) libHandle2Name.get(handle);
+ }
+
+ protected final synchronized LibRef incrLibRefCount(long handle, String libName) {
+ LibRef libRef = getLibRef(handle);
+ if( null == libRef ) {
+ libRef = new LibRef(libName);
+ libHandle2Name.put(handle, libRef);
+ } else {
+ libRef.incrRefCount();
+ }
+ if(DEBUG) {
+ System.err.println("DynamicLinkerImpl.incrLibRefCount 0x"+Long.toHexString(handle)+ " -> "+libRef+", libs loaded "+libHandle2Name.size());
+ }
+ return libRef;
+ }
+
+ protected final synchronized LibRef decrLibRefCount(long handle) {
+ LibRef libRef = getLibRef(handle);
+ if( null != libRef ) {
+ if( 0 == libRef.decrRefCount() ) {
+ libHandle2Name.remove(handle);
+ }
+ }
+ if(DEBUG) {
+ System.err.println("DynamicLinkerImpl.decrLibRefCount 0x"+Long.toHexString(handle)+ " -> "+libRef+", libs loaded "+libHandle2Name.size());
+ }
+ return libRef;
+ }
+
+}
diff --git a/src/java/jogamp/common/os/PosixDynamicLinkerImpl.java b/src/java/jogamp/common/os/PosixDynamicLinkerImpl.java
new file mode 100644
index 0000000..50feb94
--- /dev/null
+++ b/src/java/jogamp/common/os/PosixDynamicLinkerImpl.java
@@ -0,0 +1,89 @@
+/**
+ * Copyright 2013 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package jogamp.common.os;
+
+import com.jogamp.common.util.SecurityUtil;
+
+public final class PosixDynamicLinkerImpl extends UnixDynamicLinkerImpl {
+
+ private static final long RTLD_DEFAULT = 0;
+ // static final long RTLD_NEXT = -1L;
+
+ private static final int RTLD_LAZY = 0x00001;
+ // static final int RTLD_NOW = 0x00002;
+ private static final int RTLD_LOCAL = 0x00000;
+ private static final int RTLD_GLOBAL = 0x00100;
+
+ @Override
+ public final long openLibraryLocal(String pathname, boolean debug) throws SecurityException {
+ // Note we use RTLD_GLOBAL visibility to _NOT_ allow this functionality to
+ // be used to pre-resolve dependent libraries of JNI code without
+ // requiring that all references to symbols in those libraries be
+ // looked up dynamically via the ProcAddressTable mechanism; in
+ // other words, one can actually link against the library instead of
+ // having to dlsym all entry points. System.loadLibrary() uses
+ // RTLD_LOCAL visibility so can't be used for this purpose.
+ SecurityUtil.checkLinkPermission(pathname);
+ final long handle = dlopen(pathname, RTLD_LAZY | RTLD_LOCAL);
+ if( 0 != handle ) {
+ incrLibRefCount(handle, pathname);
+ } else if ( DEBUG || debug ) {
+ System.err.println("dlopen \""+pathname+"\" local failed, error: "+dlerror());
+ }
+ return handle;
+ }
+
+ @Override
+ public final long openLibraryGlobal(String pathname, boolean debug) throws SecurityException {
+ // Note we use RTLD_GLOBAL visibility to allow this functionality to
+ // be used to pre-resolve dependent libraries of JNI code without
+ // requiring that all references to symbols in those libraries be
+ // looked up dynamically via the ProcAddressTable mechanism; in
+ // other words, one can actually link against the library instead of
+ // having to dlsym all entry points. System.loadLibrary() uses
+ // RTLD_LOCAL visibility so can't be used for this purpose.
+ SecurityUtil.checkLinkPermission(pathname);
+ final long handle = dlopen(pathname, RTLD_LAZY | RTLD_GLOBAL);
+ if( 0 != handle ) {
+ incrLibRefCount(handle, pathname);
+ } else if ( DEBUG || debug ) {
+ System.err.println("dlopen \""+pathname+"\" global failed, error: "+dlerror());
+ }
+ return handle;
+ }
+
+ @Override
+ public final long lookupSymbolGlobal(String symbolName) throws SecurityException {
+ SecurityUtil.checkAllLinkPermission();
+ final long addr = dlsym(RTLD_DEFAULT, symbolName);
+ if(DEBUG_LOOKUP) {
+ System.err.println("DynamicLinkerImpl.lookupSymbolGlobal("+symbolName+") -> 0x"+Long.toHexString(addr));
+ }
+ return addr;
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 12:30:48 +0000