merrifield/common/utils/HwcTrace.h

/*
// Copyright (c) 2014 Intel Corporation 
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
*/
#ifndef HWC_TRACE_H
#define HWC_TRACE_H

#define LOG_TAG "hwcomposer"
//#define LOG_NDEBUG 0
#include <cutils/log.h>


#ifdef _cplusplus
extern "C" {
#endif

// Helper to automatically preappend classname::functionname to the log message
#define VTRACE(fmt,...)     ALOGV("%s: " fmt, __func__, ##__VA_ARGS__)
#define DTRACE(fmt,...)     ALOGD("%s: " fmt, __func__, ##__VA_ARGS__)
#define ITRACE(fmt,...)     ALOGI("%s: " fmt, __func__, ##__VA_ARGS__)
#define WTRACE(fmt,...)     ALOGW("%s: " fmt, __func__, ##__VA_ARGS__)
#define ETRACE(fmt,...)     ALOGE("%s: " fmt, __func__, ##__VA_ARGS__)


// Function call tracing
#if 0
#define CTRACE()            ALOGV("Calling %s", __func__)
#define XTRACE()            ALOGV("Leaving %s", __func__)
#else
#define CTRACE()            ((void)0)
#define XTRACE()            ((void)0)
#endif


// Arguments tracing
#if 0
#define ATRACE(fmt,...)     ALOGV("%s(args): "fmt, __func__, ##__VA_ARGS__);
#else
#define ATRACE(fmt,...)     ((void)0)
#endif



// Helper to abort the execution if object is not initialized.
// This should never happen if the rules below are followed during design:
// 1) Create an object.
// 2) Initialize the object immediately.
// 3) If failed, delete the object.
// These helpers should be disabled and stripped out of release build

#define RETURN_X_IF_NOT_INIT(X) \
do { \
    CTRACE(); \
    if (false == mInitialized) { \
        LOG_ALWAYS_FATAL("%s: Object is not initialized! Line = %d", __func__, __LINE__); \
        return X; \
    } \
} while (0)

#if 1
#define RETURN_FALSE_IF_NOT_INIT()      RETURN_X_IF_NOT_INIT(false)
#define RETURN_VOID_IF_NOT_INIT()       RETURN_X_IF_NOT_INIT()
#define RETURN_NULL_IF_NOT_INIT()       RETURN_X_IF_NOT_INIT(0)
#else
#define RETURN_FALSE_IF_NOT_INIT()      ((void)0)
#define RETURN_VOID_IF_NOT_INIT()       ((void)0)
#define RETURN_NULL_IF_NOT_INIT()       ((void)0)
#endif


// Helper to log error message, call de-initializer and return false.
#define DEINIT_AND_RETURN_FALSE(...) \
do { \
    ETRACE(__VA_ARGS__); \
    deinitialize(); \
    return false; \
} while (0)


#define DEINIT_AND_DELETE_OBJ(X) \
    if (X) {\
        X->deinitialize();\
        delete X; \
        X = NULL; \
    }


#define WARN_IF_NOT_DEINIT() \
    CTRACE(); \
    if (mInitialized) {\
        LOG_ALWAYS_FATAL("%s: Object is not deinitialized! Line = %d", __func__, __LINE__); \
    }


// _cplusplus
#ifdef _cplusplus
}
#endif


#endif /* HWC_TRACE_H */