[Tarantool-patches] [PATCH 1/7] box: rename diag_add_error to diag_set_error

[Nikita Pettik <korablev@tarantool.org>]

From: Kirill Shcherbatov <kshcherbatov@tarantool.org>

Let's rename diag_add_error() to diag_set_error() because it actually
replaces an error object in diagnostic area with a new one and this name
is not representative. Moreover, we are going to introduce a new
diag_add_error() which will place error at the top of stack diagnostic
area.

Needed for #1148
---
 src/box/applier.cc        | 2 +-
 src/box/error.cc          | 2 +-
 src/box/relay.cc          | 4 ++--
 src/box/vy_scheduler.c    | 6 +++---
 src/lib/core/diag.h       | 6 +++---
 src/lib/core/exception.cc | 2 +-
 src/lib/core/exception.h  | 2 +-
 src/lua/utils.c           | 2 +-
 8 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/src/box/applier.cc b/src/box/applier.cc
index ae3d281a5..5871bea69 100644
--- a/src/box/applier.cc
+++ b/src/box/applier.cc
@@ -843,7 +843,7 @@ applier_on_rollback(struct trigger *trigger, void *event)
 	struct applier *applier = (struct applier *)trigger->data;
 	/* Setup a shared error. */
 	if (!diag_is_empty(&replicaset.applier.diag)) {
-		diag_add_error(&applier->diag,
+		diag_set_error(&applier->diag,
 			       diag_last_error(&replicaset.applier.diag));
 	}
 	/* Stop the applier fiber. */
diff --git a/src/box/error.cc b/src/box/error.cc
index 47dce3305..7dfe1b3ee 100644
--- a/src/box/error.cc
+++ b/src/box/error.cc
@@ -82,7 +82,7 @@ box_error_set(const char *file, unsigned line, uint32_t code,
 		error_vformat_msg(e, fmt, ap);
 		va_end(ap);
 	}
-	diag_add_error(&fiber()->diag, e);
+	diag_set_error(&fiber()->diag, e);
 	return -1;
 }
 
diff --git a/src/box/relay.cc b/src/box/relay.cc
index b89632273..1855e422c 100644
--- a/src/box/relay.cc
+++ b/src/box/relay.cc
@@ -472,7 +472,7 @@ relay_set_error(struct relay *relay, struct error *e)
 {
 	/* Don't override existing error. */
 	if (diag_is_empty(&relay->diag))
-		diag_add_error(&relay->diag, e);
+		diag_set_error(&relay->diag, e);
 }
 
 static void
@@ -651,7 +651,7 @@ relay_subscribe_f(va_list ap)
 	 * Don't clear the error for status reporting.
 	 */
 	assert(!diag_is_empty(&relay->diag));
-	diag_add_error(diag_get(), diag_last_error(&relay->diag));
+	diag_set_error(diag_get(), diag_last_error(&relay->diag));
 	diag_log();
 	say_crit("exiting the relay loop");
 
diff --git a/src/box/vy_scheduler.c b/src/box/vy_scheduler.c
index 86bed8013..cd1c19e66 100644
--- a/src/box/vy_scheduler.c
+++ b/src/box/vy_scheduler.c
@@ -619,7 +619,7 @@ vy_scheduler_dump(struct vy_scheduler *scheduler)
 		if (scheduler->is_throttled) {
 			/* Dump error occurred. */
 			struct error *e = diag_last_error(&scheduler->diag);
-			diag_add_error(diag_get(), e);
+			diag_set_error(diag_get(), e);
 			return -1;
 		}
 		fiber_cond_wait(&scheduler->dump_cond);
@@ -693,7 +693,7 @@ vy_scheduler_begin_checkpoint(struct vy_scheduler *scheduler)
 	 */
 	if (scheduler->is_throttled) {
 		struct error *e = diag_last_error(&scheduler->diag);
-		diag_add_error(diag_get(), e);
+		diag_set_error(diag_get(), e);
 		say_error("cannot checkpoint vinyl, "
 			  "scheduler is throttled with: %s", e->errmsg);
 		return -1;
@@ -729,7 +729,7 @@ vy_scheduler_wait_checkpoint(struct vy_scheduler *scheduler)
 		if (scheduler->is_throttled) {
 			/* A dump error occurred, abort checkpoint. */
 			struct error *e = diag_last_error(&scheduler->diag);
-			diag_add_error(diag_get(), e);
+			diag_set_error(diag_get(), e);
 			say_error("vinyl checkpoint failed: %s", e->errmsg);
 			return -1;
 		}
diff --git a/src/lib/core/diag.h b/src/lib/core/diag.h
index f763957c2..7e1e1a174 100644
--- a/src/lib/core/diag.h
+++ b/src/lib/core/diag.h
@@ -168,12 +168,12 @@ diag_clear(struct diag *diag)
 }
 
 /**
- * Add a new error to the diagnostics area
+ * Set a new error to the diagnostics area, replacing existent.
  * \param diag diagnostics area
  * \param e error to add
  */
 static inline void
-diag_add_error(struct diag *diag, struct error *e)
+diag_set_error(struct diag *diag, struct error *e)
 {
 	assert(e != NULL);
 	error_ref(e);
@@ -275,7 +275,7 @@ BuildSocketError(const char *file, unsigned line, const char *socketname,
 	say_debug("%s at %s:%i", #class, __FILE__, __LINE__);		\
 	struct error *e;						\
 	e = Build##class(__FILE__, __LINE__, ##__VA_ARGS__);		\
-	diag_add_error(diag_get(), e);					\
+	diag_set_error(diag_get(), e);					\
 	/* Restore the errno which might have been reset.  */           \
 	errno = save_errno;                                             \
 } while (0)
diff --git a/src/lib/core/exception.cc b/src/lib/core/exception.cc
index 76dcea553..0ab10c4bd 100644
--- a/src/lib/core/exception.cc
+++ b/src/lib/core/exception.cc
@@ -99,7 +99,7 @@ Exception::operator new(size_t size)
 	void *buf = malloc(size);
 	if (buf != NULL)
 		return buf;
-	diag_add_error(diag_get(), &out_of_memory);
+	diag_set_error(diag_get(), &out_of_memory);
 	throw &out_of_memory;
 }
 
diff --git a/src/lib/core/exception.h b/src/lib/core/exception.h
index d6154eb32..1947b4f00 100644
--- a/src/lib/core/exception.h
+++ b/src/lib/core/exception.h
@@ -177,7 +177,7 @@ exception_init();
 #define tnt_error(class, ...) ({					\
 	say_debug("%s at %s:%i", #class, __FILE__, __LINE__);		\
 	class *e = new class(__FILE__, __LINE__, ##__VA_ARGS__);	\
-	diag_add_error(diag_get(), e);					\
+	diag_set_error(diag_get(), e);					\
 	e;								\
 })
 
diff --git a/src/lua/utils.c b/src/lua/utils.c
index de14c778c..54d18ac89 100644
--- a/src/lua/utils.c
+++ b/src/lua/utils.c
@@ -1022,7 +1022,7 @@ luaT_toerror(lua_State *L)
 	struct error *e = luaL_iserror(L, -1);
 	if (e != NULL) {
 		/* Re-throw original error */
-		diag_add_error(&fiber()->diag, e);
+		diag_set_error(&fiber()->diag, e);
 	} else {
 		/* Convert Lua error to a Tarantool exception. */
 		diag_set(LuajitError, luaT_tolstring(L, -1, NULL));
-- 
2.15.1