1 /* 2 * libjingle 3 * Copyright 2015 Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 */ 28 29 // Android's FindClass() is trickier than usual because the app-specific 30 // ClassLoader is not consulted when there is no app-specific frame on the 31 // stack. Consequently, we only look up all classes once in app/webrtc. 32 // http://developer.android.com/training/articles/perf-jni.html#faq_FindClass 33 34 #ifndef TALK_APP_WEBRTC_JAVA_JNI_CLASSREFERENCEHOLDER_H_ 35 #define TALK_APP_WEBRTC_JAVA_JNI_CLASSREFERENCEHOLDER_H_ 36 37 #include <jni.h> 38 #include <string> 39 #include <map> 40 41 namespace webrtc_jni { 42 43 // LoadGlobalClassReferenceHolder must be called in JNI_OnLoad. 44 void LoadGlobalClassReferenceHolder(); 45 // FreeGlobalClassReferenceHolder must be called in JNI_UnLoad. 46 void FreeGlobalClassReferenceHolder(); 47 48 // Returns a global reference guaranteed to be valid for the lifetime of the 49 // process. 50 jclass FindClass(JNIEnv* jni, const char* name); 51 52 // Convenience macro defining JNI-accessible methods in the org.webrtc package. 53 // Eliminates unnecessary boilerplate and line-wraps, reducing visual clutter. 54 #define JOW(rettype, name) extern "C" rettype JNIEXPORT JNICALL \ 55 Java_org_webrtc_##name 56 57 } // namespace webrtc_jni 58 59 #endif // TALK_APP_WEBRTC_JAVA_JNI_CLASSREFERENCEHOLDER_H_ 60