diff options
Diffstat (limited to 'core/jni/android_emoji_EmojiFactory.cpp')
-rw-r--r-- | core/jni/android_emoji_EmojiFactory.cpp | 87 |
1 files changed, 50 insertions, 37 deletions
diff --git a/core/jni/android_emoji_EmojiFactory.cpp b/core/jni/android_emoji_EmojiFactory.cpp index 59f63a8..7d6e24f 100644 --- a/core/jni/android_emoji_EmojiFactory.cpp +++ b/core/jni/android_emoji_EmojiFactory.cpp @@ -1,7 +1,7 @@ #include "SkTypes.h" #include "SkImageDecoder.h" -#define LOG_TAG "DoCoMoEmojiFactory_jni" +#define LOG_TAG "EmojiFactory_jni" #include <utils/Log.h> #include <utils/String8.h> @@ -13,15 +13,11 @@ namespace android { -// Note: This class is originally developed so that libandroid_runtime does -// not have to depend on libemoji which is optional library. However, we -// cannot use this class, since current (2009-02-16) bionic libc does not allow -// dlopen()-ing inside dlopen(), while not only this class but also libemoji -// uses dlopen(). class EmojiFactoryCaller { public: - EmojiFactoryCaller(); + EmojiFactoryCaller() {} virtual ~EmojiFactoryCaller(); + bool Init(); EmojiFactory *TryCallGetImplementation(const char* name); EmojiFactory *TryCallGetAvailableImplementation(); private: @@ -30,35 +26,45 @@ class EmojiFactoryCaller { EmojiFactory *(*m_get_available_implementation)(); }; -EmojiFactoryCaller::EmojiFactoryCaller() { +bool EmojiFactoryCaller::Init() { + const char* error_msg; m_handle = dlopen("libemoji.so", RTLD_LAZY | RTLD_LOCAL); - const char* error_str = dlerror(); - if (error_str) { - LOGI("Failed to load libemoji.so: %s", error_str); - return; + + if (m_handle == NULL) { + error_msg = "Failed to load libemoji.so"; + goto FAIL; } m_get_implementation = reinterpret_cast<EmojiFactory *(*)(const char*)>( dlsym(m_handle, "GetImplementation")); - error_str = dlerror(); - if (error_str) { - LOGE("Failed to get symbol of GetImplementation: %s", error_str); - dlclose(m_handle); - m_handle = NULL; - return; + if (m_get_implementation == NULL) { + error_msg = "Failed to get symbol of GetImplementation"; + goto FAIL; } m_get_available_implementation = reinterpret_cast<EmojiFactory *(*)()>( dlsym(m_handle,"GetAvailableImplementation")); - error_str = dlerror(); - if (error_str) { - LOGE("Failed to get symbol of GetAvailableImplementation: %s", error_str); + if (m_get_available_implementation == NULL) { + error_msg = "Failed to get symbol of GetAvailableImplementation"; + goto FAIL; + } + + return true; + +FAIL: + const char* error_str = dlerror(); + if (error_str == NULL) { + error_str = "unknown reason"; + } + + LOGE("%s: %s", error_msg, error_str); + if (m_handle != NULL) { dlclose(m_handle); m_handle = NULL; - return; } + return false; } EmojiFactoryCaller::~EmojiFactoryCaller() { @@ -82,10 +88,9 @@ EmojiFactory *EmojiFactoryCaller::TryCallGetAvailableImplementation() { return m_get_available_implementation(); } -// Note: bionic libc's dlopen() does not allow recursive dlopen(). So currently -// we cannot use EmojiFactoryCaller here. -// static EmojiFactoryCaller* gCaller; -// static pthread_once_t g_once = PTHREAD_ONCE_INIT; +static EmojiFactoryCaller* gCaller; +static pthread_once_t g_once = PTHREAD_ONCE_INIT; +static bool lib_emoji_factory_is_ready; static jclass gString_class; @@ -95,9 +100,10 @@ static jmethodID gBitmap_constructorMethodID; static jclass gEmojiFactory_class; static jmethodID gEmojiFactory_constructorMethodID; -// static void InitializeCaller() { -// gCaller = new EmojiFactoryCaller(); -// } +static void InitializeCaller() { + gCaller = new EmojiFactoryCaller(); + lib_emoji_factory_is_ready = gCaller->Init(); +} static jobject create_java_EmojiFactory( JNIEnv* env, EmojiFactory* factory, jstring name) { @@ -116,19 +122,23 @@ static jobject create_java_EmojiFactory( static jobject android_emoji_EmojiFactory_newInstance( JNIEnv* env, jobject clazz, jstring name) { - // pthread_once(&g_once, InitializeCaller); - if (NULL == name) { return NULL; } + pthread_once(&g_once, InitializeCaller); + if (!lib_emoji_factory_is_ready) { + return NULL; + } const jchar* jchars = env->GetStringChars(name, NULL); jsize len = env->GetStringLength(name); String8 str(String16(jchars, len)); - // EmojiFactory *factory = gCaller->TryCallGetImplementation(str.string()); - EmojiFactory *factory = EmojiFactory::GetImplementation(str.string()); - + EmojiFactory *factory = gCaller->TryCallGetImplementation(str.string()); + // EmojiFactory *factory = EmojiFactory::GetImplementation(str.string()); + if (NULL == factory) { + return NULL; + } env->ReleaseStringChars(name, jchars); return create_java_EmojiFactory(env, factory, name); @@ -136,10 +146,13 @@ static jobject android_emoji_EmojiFactory_newInstance( static jobject android_emoji_EmojiFactory_newAvailableInstance( JNIEnv* env, jobject clazz) { - // pthread_once(&g_once, InitializeCaller); + pthread_once(&g_once, InitializeCaller); + if (!lib_emoji_factory_is_ready) { + return NULL; + } - // EmojiFactory *factory = gCaller->TryCallGetAvailableImplementation(); - EmojiFactory *factory = EmojiFactory::GetAvailableImplementation(); + EmojiFactory *factory = gCaller->TryCallGetAvailableImplementation(); + // EmojiFactory *factory = EmojiFactory::GetAvailableImplementation(); if (NULL == factory) { return NULL; } |