Index: webrtc/modules/utility/source/helpers_android.cc |
diff --git a/webrtc/modules/utility/source/helpers_android.cc b/webrtc/modules/utility/source/helpers_android.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..aea35f8d5a254b34c89bfa855f8129f932ab1847 |
--- /dev/null |
+++ b/webrtc/modules/utility/source/helpers_android.cc |
@@ -0,0 +1,123 @@ |
+/* |
+ * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
+ * |
+ * Use of this source code is governed by a BSD-style license |
+ * that can be found in the LICENSE file in the root of the source |
+ * tree. An additional intellectual property rights grant can be found |
+ * in the file PATENTS. All contributing project authors may |
+ * be found in the AUTHORS file in the root of the source tree. |
+ */ |
+ |
+#include "webrtc/base/checks.h" |
+#include "webrtc/modules/utility/include/helpers_android.h" |
+ |
+#include <android/log.h> |
+#include <assert.h> |
+#include <pthread.h> |
+#include <stddef.h> |
+#include <unistd.h> |
+ |
+#define TAG "HelpersAndroid" |
+#define ALOGD(...) __android_log_print(ANDROID_LOG_DEBUG, TAG, __VA_ARGS__) |
+ |
+namespace webrtc { |
+ |
+JNIEnv* GetEnv(JavaVM* jvm) { |
+ void* env = NULL; |
+ jint status = jvm->GetEnv(&env, JNI_VERSION_1_6); |
+ RTC_CHECK(((env != NULL) && (status == JNI_OK)) || |
+ ((env == NULL) && (status == JNI_EDETACHED))) |
+ << "Unexpected GetEnv return: " << status << ":" << env; |
+ return reinterpret_cast<JNIEnv*>(env); |
+} |
+ |
+// Return a |jlong| that will correctly convert back to |ptr|. This is needed |
+// because the alternative (of silently passing a 32-bit pointer to a vararg |
+// function expecting a 64-bit param) picks up garbage in the high 32 bits. |
+jlong PointerTojlong(void* ptr) { |
+ static_assert(sizeof(intptr_t) <= sizeof(jlong), |
+ "Time to rethink the use of jlongs"); |
+ // Going through intptr_t to be obvious about the definedness of the |
+ // conversion from pointer to integral type. intptr_t to jlong is a standard |
+ // widening by the static_assert above. |
+ jlong ret = reinterpret_cast<intptr_t>(ptr); |
+ RTC_DCHECK(reinterpret_cast<void*>(ret) == ptr); |
+ return ret; |
+} |
+ |
+jmethodID GetMethodID ( |
+ JNIEnv* jni, jclass c, const char* name, const char* signature) { |
+ jmethodID m = jni->GetMethodID(c, name, signature); |
+ CHECK_EXCEPTION(jni) << "Error during GetMethodID: " << name << ", " |
+ << signature; |
+ RTC_CHECK(m) << name << ", " << signature; |
+ return m; |
+} |
+ |
+jmethodID GetStaticMethodID ( |
+ JNIEnv* jni, jclass c, const char* name, const char* signature) { |
+ jmethodID m = jni->GetStaticMethodID(c, name, signature); |
+ CHECK_EXCEPTION(jni) << "Error during GetStaticMethodID: " << name << ", " |
+ << signature; |
+ RTC_CHECK(m) << name << ", " << signature; |
+ return m; |
+} |
+ |
+jclass FindClass(JNIEnv* jni, const char* name) { |
+ jclass c = jni->FindClass(name); |
+ CHECK_EXCEPTION(jni) << "Error during FindClass: " << name; |
+ RTC_CHECK(c) << name; |
+ return c; |
+} |
+ |
+jobject NewGlobalRef(JNIEnv* jni, jobject o) { |
+ jobject ret = jni->NewGlobalRef(o); |
+ CHECK_EXCEPTION(jni) << "Error during NewGlobalRef"; |
+ RTC_CHECK(ret); |
+ return ret; |
+} |
+ |
+void DeleteGlobalRef(JNIEnv* jni, jobject o) { |
+ jni->DeleteGlobalRef(o); |
+ CHECK_EXCEPTION(jni) << "Error during DeleteGlobalRef"; |
+} |
+ |
+std::string GetThreadId() { |
+ char buf[21]; // Big enough to hold a kuint64max plus terminating NULL. |
+ int thread_id = gettid(); |
+ RTC_CHECK_LT(snprintf(buf, sizeof(buf), "%i", thread_id), |
+ static_cast<int>(sizeof(buf))) |
+ << "Thread id is bigger than uint64??"; |
+ return std::string(buf); |
+} |
+ |
+std::string GetThreadInfo() { |
+ return "@[tid=" + GetThreadId() + "]"; |
+} |
+ |
+AttachThreadScoped::AttachThreadScoped(JavaVM* jvm) |
+ : attached_(false), jvm_(jvm), env_(NULL) { |
+ env_ = GetEnv(jvm); |
+ if (!env_) { |
+ // Adding debug log here so we can track down potential leaks and figure |
+ // out why we sometimes see "Native thread exiting without having called |
+ // DetachCurrentThread" in logcat outputs. |
+ ALOGD("Attaching thread to JVM%s", GetThreadInfo().c_str()); |
+ jint res = jvm->AttachCurrentThread(&env_, NULL); |
+ attached_ = (res == JNI_OK); |
+ RTC_CHECK(attached_) << "AttachCurrentThread failed: " << res; |
+ } |
+} |
+ |
+AttachThreadScoped::~AttachThreadScoped() { |
+ if (attached_) { |
+ ALOGD("Detaching thread from JVM%s", GetThreadInfo().c_str()); |
+ jint res = jvm_->DetachCurrentThread(); |
+ RTC_CHECK(res == JNI_OK) << "DetachCurrentThread failed: " << res; |
+ RTC_CHECK(!GetEnv(jvm_)); |
+ } |
+} |
+ |
+JNIEnv* AttachThreadScoped::env() { return env_; } |
+ |
+} // namespace webrtc |