convert eviction log to new process

add LOGGER_LOG() macro wrapper for callers.

eviction logging is now using the "more final" method, where data is copied
into structs embedded into the per-worker circular buffer. This moves the
expensive snprintf calls to the background thread, and also allows making the
logging format switchable.

also switched the format to key=value. it's still largely readable but much
easier to parse.

1 files changed, 17 insertions, 0 deletions

diff --git a/logger.h b/logger.h
index 9d17616..e750378 100644
--- a/logger.h
+++ b/logger.h
@@ -39,6 +39,14 @@ typedef const struct {
     char *format;
 } entry_details;
 
+struct logentry_eviction {
+    long long int exptime;
+    uint32_t latime;
+    uint16_t it_flags;
+    uint8_t nkey;
+    char key[];
+};
+
 typedef struct _logentry {
     enum log_entry_subtype event;
     uint16_t eflags;
@@ -105,6 +113,15 @@ extern pthread_key_t logger_key;
 void logger_init(void);
 logger *logger_create(void);
 
+#define LOGGER_LOG(l, flag, type, ...) \
+    do { \
+        logger *myl = l; \
+        if (l == NULL) \
+            myl = GET_LOGGER(); \
+        if (myl->eflags & flag) \
+            logger_log(myl, type, __VA_ARGS__); \
+    } while (0)
+
 enum logger_ret_type logger_log(logger *l, const enum log_entry_type event, const void *entry, ...);
 
 enum logger_add_watcher_ret {