[Openais] [PATCH 5/9] logsys: add macros to pack/unpack rec_ident
Fabio M. Di Nitto
fdinitto at redhat.com
Wed Jun 17 03:53:45 PDT 2009
rec_ident should contain 3 info: log level, subsystem id and
message type.
Signed-off-by: Fabio M. Di Nitto <fdinitto at redhat.com>
---
:100644 100644 ea53cac... 5629879... M include/corosync/engine/logsys.h
include/corosync/engine/logsys.h | 71 ++++++++++++++++++++++++++++++++------
1 files changed, 60 insertions(+), 11 deletions(-)
diff --git a/include/corosync/engine/logsys.h b/include/corosync/engine/logsys.h
index ea53cac..5629879 100644
--- a/include/corosync/engine/logsys.h
+++ b/include/corosync/engine/logsys.h
@@ -77,17 +77,20 @@ extern "C" {
* RECID_LOG indicates a message that should be sent to log. Anything else
* is stored only in the flight recorder.
*/
-#define LOGSYS_RECID_LOG UINT_MAX - 1
-#define LOGSYS_RECID_ENTER UINT_MAX - 2
-#define LOGSYS_RECID_LEAVE UINT_MAX - 3
-#define LOGSYS_RECID_TRACE1 UINT_MAX - 4
-#define LOGSYS_RECID_TRACE2 UINT_MAX - 5
-#define LOGSYS_RECID_TRACE3 UINT_MAX - 6
-#define LOGSYS_RECID_TRACE4 UINT_MAX - 7
-#define LOGSYS_RECID_TRACE5 UINT_MAX - 8
-#define LOGSYS_RECID_TRACE6 UINT_MAX - 9
-#define LOGSYS_RECID_TRACE7 UINT_MAX - 10
-#define LOGSYS_RECID_TRACE8 UINT_MAX - 11
+
+#define LOGSYS_RECID_MAX LOGSYS_RECID_RECID_MASK
+
+#define LOGSYS_RECID_LOG LOGSYS_RECID_MAX - 1
+#define LOGSYS_RECID_ENTER LOGSYS_RECID_MAX - 2
+#define LOGSYS_RECID_LEAVE LOGSYS_RECID_MAX - 3
+#define LOGSYS_RECID_TRACE1 LOGSYS_RECID_MAX - 4
+#define LOGSYS_RECID_TRACE2 LOGSYS_RECID_MAX - 5
+#define LOGSYS_RECID_TRACE3 LOGSYS_RECID_MAX - 6
+#define LOGSYS_RECID_TRACE4 LOGSYS_RECID_MAX - 7
+#define LOGSYS_RECID_TRACE5 LOGSYS_RECID_MAX - 8
+#define LOGSYS_RECID_TRACE6 LOGSYS_RECID_MAX - 9
+#define LOGSYS_RECID_TRACE7 LOGSYS_RECID_MAX - 10
+#define LOGSYS_RECID_TRACE8 LOGSYS_RECID_MAX - 11
/*
@@ -104,6 +107,52 @@ extern "C" {
#define LOGSYS_MAX_SUBSYS_COUNT 64
#define LOGSYS_MAX_SUBSYS_NAMELEN 64
+/*
+ * rec_ident explained:
+ *
+ * rec_ident is an unsigned int and carries bitfields information
+ * on subsys_id, log priority (level) and type of message (RECID).
+ *
+ * level values are imported from syslog.h.
+ * At the time of writing it's a 3 bits value (0 to 7).
+ *
+ * subsys_id is any value between 0 and 64 (LOGSYS_MAX_SUBSYS_COUNT)
+ *
+ * RECID identifies the type of message. A set of predefined values
+ * are available via logsys, but other custom values can be defined
+ * by users.
+ *
+ * ----
+ * bitfields:
+ *
+ * 0 - 2 level
+ * 3 - 9 subsysid
+ * 10 - n RECID
+ */
+
+#define LOGSYS_LEVEL_END 3
+#define LOGSYS_SUBSYSID_END (LOGSYS_LEVEL_END + 7)
+
+#define LOGSYS_RECID_LEVEL_MASK LOG_PRIMASK
+#define LOGSYS_RECID_SUBSYSID_MASK ((2 << (LOGSYS_SUBSYSID_END - 1)) - \
+ (LOG_PRIMASK + 1))
+#define LOGSYS_RECID_RECID_MASK (UINT_MAX - \
+ (LOGSYS_RECID_SUBSYSID_MASK + LOG_PRIMASK))
+
+#define LOGSYS_ENCODE_RECID(level,subsysid,recid) \
+ (((recid) << LOGSYS_SUBSYSID_END) | \
+ ((subsysid) << LOGSYS_LEVEL_END) | \
+ (level))
+
+#define LOGSYS_DECODE_LEVEL(rec_ident) \
+ ((rec_ident) & LOGSYS_RECID_LEVEL_MASK)
+
+#define LOGSYS_DECODE_SUBSYSID(rec_ident) \
+ (((rec_ident) & LOGSYS_RECID_SUBSYSID_MASK) >> LOGSYS_LEVEL_END)
+
+#define LOGSYS_DECODE_RECID(rec_ident) \
+ (((rec_ident) & LOGSYS_RECID_RECID_MASK) >> LOGSYS_SUBSYSID_END)
+
#ifndef LOGSYS_UTILS_ONLY
extern int _logsys_system_setup(
--
1.5.4.3
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