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[Qemu-devel] [PATCH 09/35] qerror: don't delay error message constructio


From: Luiz Capitulino
Subject: [Qemu-devel] [PATCH 09/35] qerror: don't delay error message construction
Date: Tue, 7 Aug 2012 12:53:20 -0300

Today, the error message is only constructed when it's used. This commit
changes qerror to construct the error message when the error object is
built (ie. when the error is reported).

This eliminates the need of storing a pointer to qerror_table[], which
will be dropped soon, and also simplifies the code.

Signed-off-by: Luiz Capitulino <address@hidden>
---
 qerror.c | 29 ++++-------------------------
 qerror.h |  2 +-
 2 files changed, 5 insertions(+), 26 deletions(-)

diff --git a/qerror.c b/qerror.c
index d073ed7..a254f88 100644
--- a/qerror.c
+++ b/qerror.c
@@ -385,22 +385,6 @@ static QDict *error_obj_from_fmt_no_fail(const char *fmt, 
va_list *va)
     return ret;
 }
 
-static const QErrorStringTable *get_desc_no_fail(const char *fmt)
-{
-    int i;
-
-    // FIXME: inefficient loop
-
-    for (i = 0; qerror_table[i].error_fmt; i++) {
-        if (strcmp(qerror_table[i].error_fmt, fmt) == 0) {
-            return &qerror_table[i];
-        }
-    }
-
-    fprintf(stderr, "error format '%s' not found\n", fmt);
-    abort();
-}
-
 /**
  * qerror_from_info(): Create a new QError from error information
  *
@@ -414,7 +398,7 @@ static QError *qerror_from_info(const char *fmt, va_list 
*va)
     loc_save(&qerr->loc);
 
     qerr->error = error_obj_from_fmt_no_fail(fmt, va);
-    qerr->entry = get_desc_no_fail(fmt);
+    qerr->err_msg = qerror_format(fmt, qerr->error);
 
     return qerr;
 }
@@ -519,7 +503,7 @@ char *qerror_format(const char *fmt, QDict *error)
  */
 QString *qerror_human(const QError *qerror)
 {
-    return qerror_format_desc(qerror->error, qerror->entry);
+    return qstring_from_str(qerror->err_msg);
 }
 
 /**
@@ -566,19 +550,13 @@ struct Error
 void qerror_report_err(Error *err)
 {
     QError *qerr;
-    int i;
 
     qerr = qerror_new();
     loc_save(&qerr->loc);
     QINCREF(err->obj);
     qerr->error = err->obj;
 
-    for (i = 0; qerror_table[i].error_fmt; i++) {
-        if (strcmp(qerror_table[i].error_fmt, err->fmt) == 0) {
-            qerr->entry = &qerror_table[i];
-            break;
-        }
-    }
+    qerr->err_msg = qerror_format(err->fmt, qerr->error);
 
     if (monitor_cur_is_qmp()) {
         monitor_set_error(cur_mon, qerr);
@@ -619,5 +597,6 @@ static void qerror_destroy_obj(QObject *obj)
     qerr = qobject_to_qerror(obj);
 
     QDECREF(qerr->error);
+    g_free(qerr->err_msg);
     g_free(qerr);
 }
diff --git a/qerror.h b/qerror.h
index aec76b2..de8497d 100644
--- a/qerror.h
+++ b/qerror.h
@@ -27,7 +27,7 @@ typedef struct QError {
     QObject_HEAD;
     QDict *error;
     Location loc;
-    const QErrorStringTable *entry;
+    char *err_msg;
 } QError;
 
 QString *qerror_human(const QError *qerror);
-- 
1.7.11.2.249.g31c7954.dirty




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