tr2tls: clarify TLS terminology

Reduce or eliminate use of the term "TLS" in the Trace2 code.

The term "TLS" has two popular meanings: "thread-local storage" and
"transport layer security".  In the Trace2 source, the term is associated
with the former.  There was concern on the mailing list about it refering
to the latter.

Update the source and documentation to eliminate the use of the "TLS" term
or replace it with the phrase "thread-local storage" to reduce ambiguity.

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/trace2.h b/trace2.h
index 88d906ea83..af3c11694c 100644
--- a/trace2.h
+++ b/trace2.h
@@ -73,8 +73,7 @@ void trace2_initialize_clock(void);
 /*
  * Initialize TRACE2 tracing facility if any of the builtin TRACE2
  * targets are enabled in the system config or the environment.
- * This includes setting up the Trace2 thread local storage (TLS).
- * Emits a 'version' message containing the version of git
+ * This emits a 'version' message containing the version of git
  * and the Trace2 protocol.
  *
  * This function should be called from `main()` as early as possible in
@@ -302,7 +301,8 @@ void trace2_exec_result_fl(const char *file, int line, int exec_id, int code);
 
 /*
  * Emit a 'thread_start' event.  This must be called from inside the
- * thread-proc to set up the trace2 TLS data for the thread.
+ * thread-proc to allow the thread to create its own thread-local
+ * storage.
  *
  * Thread names should be descriptive, like "preload_index".
  * Thread names will be decorated with an instance number automatically.
@@ -315,8 +315,8 @@ void trace2_thread_start_fl(const char *file, int line,
 
 /*
  * Emit a 'thread_exit' event.  This must be called from inside the
- * thread-proc to report thread-specific data and cleanup TLS data
- * for the thread.
+ * thread-proc so that the thread can access and clean up its
+ * thread-local storage.
  */
 void trace2_thread_exit_fl(const char *file, int line);