[Intel-gfx] [PATCH i-g-t 5/5] lib: print a message when receiving a handled signal

[Thomas Wood]

Signed-off-by: Thomas Wood <thomas.wood at intel.com>
---
 lib/igt_core.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/lib/igt_core.c b/lib/igt_core.c
index 925d78c..1307fa8 100644
--- a/lib/igt_core.c
+++ b/lib/igt_core.c
@@ -366,6 +366,7 @@ static void low_mem_killer_disable(bool disable)
 }
 
 #define write_log_msg(x) write(STDERR_FILENO, x, strlen(x))
+#define write_log_char(x) write(STDERR_FILENO, &x, 1)
 static void clear_log(void)
 {
 	uint8_t i;
@@ -439,6 +440,24 @@ static void common_exit_handler(int sig)
 	 * called. */
 	assert(sig != 0 || igt_exit_called);
 
+	if (sig) {
+		int sigtmp;
+		char c;
+		int start = 1;
+
+		write_log_msg("--- Received signal ");
+
+		/* write out the signal number, in a signal safe manner */
+		sigtmp = sig;
+		for (sigtmp = sig; sigtmp > 10; sigtmp /= 10)
+			start *= 10;
+		for (; start != 0; start /= 10) {
+			c = '0' + (sig / start) % 10;
+			write_log_char(c);
+		}
+		write_log_msg("\n");
+	}
+
 	/* write the log out to a file if a signal was received or a simple
 	 * test failed (tests with subtests write the log after the subtest
 	 * failure) */
-- 
2.1.0