Merge branch 'rd/doc-hook-used-in-sample'

diff --git a/trace.h b/trace.h
index 2b6a1bc17c2cc1a8642d8c7bd460808638f28d77..171b256d261c771927541cf4d431b926b3ba102b 100644 (file)
--- a/trace.h
+++ b/trace.h
@@ -23,6 +23,7 @@ extern void trace_disable(struct trace_key *key);
 extern uint64_t getnanotime(void);
 extern void trace_command_performance(const char **argv);
 extern void trace_verbatim(struct trace_key *key, const void *buf, unsigned len);
+uint64_t trace_performance_enter(void);
 
 #ifndef HAVE_VARIADIC_MACROS
 
@@ -45,6 +46,9 @@ extern void trace_performance(uint64_t nanos, const char *format, ...);
 __attribute__((format (printf, 2, 3)))
 extern void trace_performance_since(uint64_t start, const char *format, ...);
 
+__attribute__((format (printf, 1, 2)))
+void trace_performance_leave(const char *format, ...);
+
 #else
 
 /*
@@ -118,6 +122,14 @@ extern void trace_performance_since(uint64_t start, const char *format, ...);
                                             __VA_ARGS__);                  \
        } while (0)
 
+#define trace_performance_leave(...)                                       \
+       do {                                                                \
+               if (trace_pass_fl(&trace_perf_key))                         \
+                       trace_performance_leave_fl(TRACE_CONTEXT, __LINE__, \
+                                                  getnanotime(),           \
+                                                  __VA_ARGS__);            \
+       } while (0)
+
 /* backend functions, use non-*fl macros instead */
 __attribute__((format (printf, 4, 5)))
 extern void trace_printf_key_fl(const char *file, int line, struct trace_key *key,
@@ -130,6 +142,9 @@ extern void trace_strbuf_fl(const char *file, int line, struct trace_key *key,
 __attribute__((format (printf, 4, 5)))
 extern void trace_performance_fl(const char *file, int line,
                                 uint64_t nanos, const char *fmt, ...);
+__attribute__((format (printf, 4, 5)))
+extern void trace_performance_leave_fl(const char *file, int line,
+                                      uint64_t nanos, const char *fmt, ...);
 static inline int trace_pass_fl(struct trace_key *key)
 {
        return key->fd || !key->initialized;