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      1 /*
      2  ** Copyright 2011, The Android Open Source Project
      3  **
      4  ** Licensed under the Apache License, Version 2.0 (the "License");
      5  ** you may not use this file except in compliance with the License.
      6  ** You may obtain a copy of the License at
      7  **
      8  **     http://www.apache.org/licenses/LICENSE-2.0
      9  **
     10  ** Unless required by applicable law or agreed to in writing, software
     11  ** distributed under the License is distributed on an "AS IS" BASIS,
     12  ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  ** See the License for the specific language governing permissions and
     14  ** limitations under the License.
     15  */
     16 
     17 #ifndef ANDROID_EGL_TLS_H
     18 #define ANDROID_EGL_TLS_H
     19 
     20 #include <EGL/egl.h>
     21 
     22 #include <pthread.h>
     23 
     24 // ----------------------------------------------------------------------------
     25 namespace android {
     26 // ----------------------------------------------------------------------------
     27 
     28 class DbgContext;
     29 
     30 class egl_tls_t {
     31     enum { TLS_KEY_NOT_INITIALIZED = -1 };
     32     static pthread_key_t sKey;
     33     static pthread_once_t sOnceKey;
     34 
     35     EGLint      error;
     36     EGLContext  ctx;
     37     bool        logCallWithNoContext;
     38 
     39     egl_tls_t();
     40     static void validateTLSKey();
     41     static void setErrorEtcImpl(
     42             const char* caller, int line, EGLint error, bool quiet);
     43 
     44 public:
     45     static egl_tls_t* getTLS();
     46     static void clearTLS();
     47     static void clearError();
     48     static EGLint getError();
     49     static void setContext(EGLContext ctx);
     50     static EGLContext getContext();
     51     static bool logNoContextCall();
     52     static const char *egl_strerror(EGLint err);
     53 
     54     template<typename T>
     55     static T setErrorEtc(const char* caller,
     56             int line, EGLint error, T returnValue, bool quiet = false) {
     57         setErrorEtcImpl(caller, line, error, quiet);
     58         return returnValue;
     59     }
     60 };
     61 
     62 #define setError(_e, _r)        \
     63     egl_tls_t::setErrorEtc(__FUNCTION__, __LINE__, _e, _r)
     64 
     65 #define setErrorQuiet(_e, _r)   \
     66     egl_tls_t::setErrorEtc(__FUNCTION__, __LINE__, _e, _r, true)
     67 
     68 // ----------------------------------------------------------------------------
     69 }; // namespace android
     70 // ----------------------------------------------------------------------------
     71 
     72 #endif // ANDROID_EGL_TLS_H
     73