Add debug message macros controlled by environment variable

Add a HMI_DEBUG macro to print debug messages.
It is controlled by the USE_HMI_DEBUG environment variable.

Change-Id: I3bc5bf2f3b0e9f5ee06f340053f29ad36e7d9dbb
Signed-off-by: Yuta Doi <yuta-d@witz-inc.co.jp>

1 files changed, 50 insertions, 0 deletions

diff --git a/include/hmi-debug.h b/include/hmi-debug.h
new file mode 100644
index 0000000..e6a34cf
--- /dev/null
+++ b/include/hmi-debug.h
@@ -0,0 +1,50 @@
+#ifndef __HMI_DEBUG_H__
+#define __HMI_DEBUG_H__
+
+#include <time.h>
+#include <stdio.h>
+#include <afb/afb-binding.h>
+
+enum LOG_LEVEL{
+    LOG_LEVEL_NONE = 0,
+    LOG_LEVEL_ERROR,
+    LOG_LEVEL_WARNING,
+    LOG_LEVEL_NOTICE,
+    LOG_LEVEL_INFO,
+    LOG_LEVEL_DEBUG,
+    LOG_LEVEL_MAX = LOG_LEVEL_ERROR
+};
+
+#define HMI_ERROR(prefix, args,...) _HMI_LOG(LOG_LEVEL_ERROR, __FILE__, __FUNCTION__, __LINE__, prefix, args, ##__VA_ARGS__)
+#define HMI_WARNING(prefix, args,...) _HMI_LOG(LOG_LEVEL_WARNING, __FILE__, __FUNCTION__,__LINE__, prefix, args,##__VA_ARGS__)
+#define HMI_NOTICE(prefix, args,...) _HMI_LOG(LOG_LEVEL_NOTICE, __FILE__, __FUNCTION__,__LINE__, prefix, args,##__VA_ARGS__)
+#define HMI_INFO(prefix, args,...)  _HMI_LOG(LOG_LEVEL_INFO, __FILE__, __FUNCTION__,__LINE__, prefix, args,##__VA_ARGS__)
+#define HMI_DEBUG(prefix, args,...) _HMI_LOG(LOG_LEVEL_DEBUG, __FILE__, __FUNCTION__,__LINE__, prefix, args,##__VA_ARGS__)
+
+static char ERROR_FLAG[6][20] = {"NONE", "ERROR", "WARNING", "NOTICE", "INFO", "DEBUG"};
+
+static void _HMI_LOG(enum LOG_LEVEL level, const char* file, const char* func, const int line, const char* prefix, const char* log, ...)
+{
+    const int log_level = (getenv("USE_HMI_DEBUG") == NULL)?0:atoi(getenv("USE_HMI_DEBUG"));
+    if(log_level < level)
+    {
+        return;
+    }
+
+    char *message;
+    struct timespec tp;
+    unsigned int time;
+
+    clock_gettime(CLOCK_REALTIME, &tp);
+	time = (tp.tv_sec * 1000000L) + (tp.tv_nsec / 1000);
+
+	va_list args;
+	va_start(args, log);
+	if (log == NULL || vasprintf(&message, log, args) < 0)
+        message = NULL;
+    fprintf(stderr,  "[%10.3f] [%s %s] [%s:%d] >>> %s \n", time / 1000.0, prefix, ERROR_FLAG[level], func, line, message);
+    va_end(args);
+	free(message);
+}
+
+#endif  //__HMI_DEBUG_H__
\ No newline at end of file