[v4,1/5] util: Introduce error reporting functions with fatal/abort

Commit Message

Lluís Vilanova Jan. 28, 2016, 9:41 p.m. UTC

Provide two lean functions to report error messages that fatal/abort
QEMU.

Signed-off-by: Lluís Vilanova <[e-mail]>
---
 include/qemu/error-report.h |   19 +++++++++++++++++++
 util/qemu-error.c           |   33 +++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)

Patch

diff --git a/include/qemu/error-report.h b/include/qemu/error-report.h
index 7ab2355..6c2f142 100644
--- a/include/qemu/error-report.h
+++ b/include/qemu/error-report.h
@@ -43,4 +43,23 @@  void error_report(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
 const char *error_get_progname(void);
 extern bool enable_timestamp_msg;
 
+/* Report message and exit with error */
+void QEMU_NORETURN error_vreport_fatal(const char *fmt, va_list ap) GCC_FMT_ATTR(1, 0);
+void QEMU_NORETURN error_report_fatal(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
+/* Report message with caller location and abort */
+#define error_vreport_abort(fmt, ap)                                    \
+    do {                                                                \
+        error_report_abort_caller_internal(__FILE__, __LINE__, __func__); \
+        error_vreport_abort_internal(fmt, ap);                          \
+    } while (0)
+#define error_report_abort(fmt, ...)                                    \
+    do {                                                                \
+        error_report_abort_caller_internal(__FILE__, __LINE__, __func__); \
+        error_report_abort_internal(fmt, ##__VA_ARGS__);                \
+    } while (0)
+
+void error_report_abort_caller_internal(const char *file, int line, const char *func);
+void QEMU_NORETURN error_vreport_abort_internal(const char *fmt, va_list ap) GCC_FMT_ATTR(1, 0);
+void QEMU_NORETURN error_report_abort_internal(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
+
 #endif
diff --git a/util/qemu-error.c b/util/qemu-error.c
index ecf5708..3de002b 100644
--- a/util/qemu-error.c
+++ b/util/qemu-error.c
@@ -237,3 +237,36 @@  void error_report(const char *fmt, ...)
     error_vreport(fmt, ap);
     va_end(ap);
 }
+
+void error_vreport_fatal(const char *fmt, va_list ap)
+{
+    error_vreport(fmt, ap);
+    exit(1);
+}
+
+void error_report_fatal(const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    error_vreport_fatal(fmt, ap);
+    va_end(ap);
+}
+
+void error_report_abort_caller_internal(const char *file, int line, const char *func)
+{
+    error_report("Unexpected error in %s() at %s:%d:", func, file, line);
+}
+
+void error_vreport_abort_internal(const char *fmt, va_list ap)
+{
+    error_vreport(fmt, ap);
+    abort();
+}
+
+void error_report_abort_internal(const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    error_vreport_abort_internal(fmt, ap);
+    va_end(ap);
+}