Changeset 6028ec8 in mainline

Timestamp:

2011-02-01T11:28:09Z (13 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

0b31409

Parents:

632ed68

Message:

Add generic logging functions

See ticket #52.

Location:

uspace/lib/usb

Files:

• include/usb/debug.h (modified) (3 diffs)
• src/debug.c (modified) (3 diffs)

uspace/lib/usb/include/usb/debug.h

@@ -1 +1 @@
 /*
- * Copyright (c) 2010 Vojtech Horky
+ * Copyright (c) 2010-2011 Vojtech Horky
  * All rights reserved.
  *
@@ -37 +37 @@
 #include <stdio.h>
 #include <usb/usb.h>
+#include <assert.h>
 
 void usb_dprintf(const char *tag, int level, const char *format, ...);
@@ -44 +45 @@
     const uint8_t *, size_t);
 
+/** Logging level. */
+typedef enum {
+    USB_LOG_LEVEL_FATAL,
+    USB_LOG_LEVEL_ERROR,
+    USB_LOG_LEVEL_WARNING,
+    USB_LOG_LEVEL_INFO,
+    USB_LOG_LEVEL_DEBUG,
+    USB_LOG_LEVEL_DEBUG2
+} usb_log_level_t;
+
+
+void usb_log_enable(usb_log_level_t, const char *);
+
+void usb_log_printf(usb_log_level_t, const char *, ...);
+
+#define usb_log_fatal(format, ...) \
+        usb_log_printf(USB_LOG_LEVEL_FATAL, format, ##__VA_ARGS__)
+
+#define usb_log_error(format, ...) \
+        usb_log_printf(USB_LOG_LEVEL_ERROR, format, ##__VA_ARGS__)
+
+#define usb_log_warning(format, ...) \
+        usb_log_printf(USB_LOG_LEVEL_WARNING, format, ##__VA_ARGS__)
+
+#define usb_log_info(format, ...) \
+        usb_log_printf(USB_LOG_LEVEL_INFO, format, ##__VA_ARGS__)
+
+#define usb_log_debug(format, ...) \
+        usb_log_printf(USB_LOG_LEVEL_DEBUG, format, ##__VA_ARGS__)
+
+#define usb_log_debug2(format, ...) \
+        usb_log_printf(USB_LOG_LEVEL_DEBUG2, format, ##__VA_ARGS__)
+
+
+
 #endif
 /**

uspace/lib/usb/src/debug.c

@@ -1 +1 @@
 /*
- * Copyright (c) 2010 Vojtech Horky
+ * Copyright (c) 2010-2011 Vojtech Horky
  * All rights reserved.
  *
@@ -61 +61 @@
 static FIBRIL_MUTEX_INITIALIZE(tag_list_guard);
 
+/** Level of logging messages. */
+static usb_log_level_t log_level = USB_LOG_LEVEL_WARNING;
+/** Prefix for logging messages. */
+static const char *log_prefix = "usb";
+/** Serialization mutex for logging functions. */
+static FIBRIL_MUTEX_INITIALIZE(log_serializer);
+
 /** Find or create new tag with given name.
  *
@@ -155 +162 @@
 }
 
+/** Enable logging.
+ *
+ * @param level Maximal enabled level (including this one).
+ * @param message_prefix Prefix for each printed message.
+ */
+void usb_log_enable(usb_log_level_t level, const char *message_prefix)
+{
+        log_prefix = message_prefix;
+        log_level = level;
+}
+
+
+static const char *log_level_name(usb_log_level_t level)
+{
+        switch (level) {
+                case USB_LOG_LEVEL_FATAL:
+                        return " FATAL";
+                case USB_LOG_LEVEL_ERROR:
+                        return " ERROR";
+                case USB_LOG_LEVEL_WARNING:
+                        return " WARN";
+                case USB_LOG_LEVEL_INFO:
+                        return " info";
+                default:
+                        return "";
+        }
+}
+
+/** Print logging message.
+ *
+ * @param level Verbosity level of the message.
+ * @param format Formatting directive.
+ */
+void usb_log_printf(usb_log_level_t level, const char *format, ...)
+{
+        if (level > log_level) {
+                return;
+        }
+
+        FILE *stream = NULL;
+        switch (level) {
+                case USB_LOG_LEVEL_FATAL:
+                case USB_LOG_LEVEL_ERROR:
+                        stream = stderr;
+                        break;
+                default:
+                        stream = stdout;
+                        break;
+        }
+        assert(stream != NULL);
+
+        va_list args;
+        va_start(args, format);
+
+        fibril_mutex_lock(&log_serializer);
+        fprintf(stream, "[%s]%s: ", log_prefix, log_level_name(level));
+        vfprintf(stream, format, args);
+        fibril_mutex_unlock(&log_serializer);
+
+        va_end(args);
+}
 
 /**