Changeset 82453b29 in mainline

Timestamp:

2018-06-28T15:15:54Z (7 years ago)

Author:

Jiří Zárevúcky <jiri.zarevucky@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

96c30c8

Parents:

061274f

git-author:

Jiří Zárevúcky <jiri.zarevucky@…> (2018-06-27 20:11:19)

git-committer:

Jiří Zárevúcky <jiri.zarevucky@…> (2018-06-28 15:15:54)

Message:

Detect when printf() printing deadlock deadlocks.

File:

• uspace/lib/c/generic/fibril_synch.c (modified) (2 diffs)

uspace/lib/c/generic/fibril_synch.c

@@ -44 +44 @@
 #include <stdlib.h>
 #include <stdio.h>
+#include <io/kio.h>
+
 #include "private/async.h"
 #include "private/fibril.h"
+
+static fibril_local bool deadlocked = false;
 
 static void optimize_execution_power(void)
@@ -62 +66 @@
 {
         fibril_t *f = (fibril_t *) fibril_get_id();
+
+        if (deadlocked) {
+                kio_printf("Deadlock detected while printing deadlock. Aborting.\n");
+                abort();
+        }
+        deadlocked = true;
 
         printf("Deadlock detected.\n");