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[Qemu-devel] [PATCH v2 10/21] linux-user: add gcov support to preexit_cl

From: Alex Bennée
Subject: [Qemu-devel] [PATCH v2 10/21] linux-user: add gcov support to preexit_cleanup
Date: Fri, 29 Jun 2018 21:52:21 +0100

As we don't always take the normal exit path when running a guest we
can skip the normal exit destructors where gcov normally dumps it's
info. The GCC manual suggests long running programs use __gcov_dump()
to flush out the coverage state periodically so we use that here.

Signed-off-by: Alex Bennée <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
 linux-user/exit.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/linux-user/exit.c b/linux-user/exit.c
index aed8713fae..14e94e28fa 100644
--- a/linux-user/exit.c
+++ b/linux-user/exit.c
@@ -19,10 +19,17 @@
 #include "qemu/osdep.h"
 #include "qemu.h"
+extern void __gcov_dump(void);
 void preexit_cleanup(CPUArchState *env, int code)
+        __gcov_dump();
         gdb_exit(env, code);

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