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| author | Stefan Hajnoczi <stefanha@redhat.com> | 2021-04-14 21:02:46 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2021-07-05 11:40:32 +0100 |
| commit | 0f08586c7171757d77c27ee6c606e8a1c44ac6e3 (patch) | |
| tree | 353c4ebb7279d41714e393efd47fabafe1a0807f /util/main-loop.c | |
| parent | 711c0418c8c1ce3a24346f058b001c4c5a2f0f81 (diff) | |
| download | qemu-0f08586c7171757d77c27ee6c606e8a1c44ac6e3.zip | |
util/async: add a human-readable name to BHs for debugging
It can be difficult to debug issues with BHs in production environments.
Although BHs can usually be identified by looking up their ->cb()
function pointer, this requires debug information for the program. It is
also not possible to print human-readable diagnostics about BHs because
they have no identifier.
This patch adds a name to each BH. The name is not unique per instance
but differentiates between cb() functions, which is usually enough. It's
done by changing aio_bh_new() and friends to macros that stringify cb.
The next patch will use the name field when reporting leaked BHs.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210414200247.917496-2-stefanha@redhat.com>
Diffstat (limited to 'util/main-loop.c')
| -rw-r--r-- | util/main-loop.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/util/main-loop.c b/util/main-loop.c index 4ae5b23e99..06b18b195c 100644 --- a/util/main-loop.c +++ b/util/main-loop.c @@ -544,9 +544,9 @@ void main_loop_wait(int nonblocking) /* Functions to operate on the main QEMU AioContext. */ -QEMUBH *qemu_bh_new(QEMUBHFunc *cb, void *opaque) +QEMUBH *qemu_bh_new_full(QEMUBHFunc *cb, void *opaque, const char *name) { - return aio_bh_new(qemu_aio_context, cb, opaque); + return aio_bh_new_full(qemu_aio_context, cb, opaque, name); } /* |