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| author | Paolo Bonzini <pbonzini@redhat.com> | 2018-06-13 14:23:08 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-06-28 19:05:32 +0200 |
| commit | ba59fb778ec68b072196cff9af11c7612a6e52f2 (patch) | |
| tree | ed0008190d1ecec2102d9f506a879f2e119a930b /include/qemu/thread-posix.h | |
| parent | f1aff7aa8e6f238909bd0b0e7a1fe235802843f2 (diff) | |
| download | qemu-ba59fb778ec68b072196cff9af11c7612a6e52f2.zip qemu-ba59fb778ec68b072196cff9af11c7612a6e52f2.tar.gz qemu-ba59fb778ec68b072196cff9af11c7612a6e52f2.tar.bz2 | |
QemuMutex: support --enable-debug-mutex
We have had some tracing tools for mutex but it's not easy to use them
for e.g. dead locks. Let's provide "--enable-debug-mutex" parameter
when configure to allow QemuMutex to store the last owner that took
specific lock. It will be easy to use this tool to debug deadlocks
since we can directly know who took the lock then as long as we can have
a debugger attached to the process.
Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180425025459.5258-4-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/qemu/thread-posix.h')
| -rw-r--r-- | include/qemu/thread-posix.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/qemu/thread-posix.h b/include/qemu/thread-posix.h index f3f47e4..fd27b34 100644 --- a/include/qemu/thread-posix.h +++ b/include/qemu/thread-posix.h @@ -12,6 +12,10 @@ typedef QemuMutex QemuRecMutex; struct QemuMutex { pthread_mutex_t lock; +#ifdef CONFIG_DEBUG_MUTEX + const char *file; + int line; +#endif bool initialized; }; |