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authorBin Meng <bin.meng@windriver.com>2022-10-19 18:20:14 +0800
committerPaolo Bonzini <pbonzini@redhat.com>2022-11-06 09:48:26 +0100
commitd393b0a176068c41cc08f41c245721ed9ca91d30 (patch)
tree1a95b3f9aa3b29796bec82251b57ce45da5592b5 /include
parent4f76b3d9bb1a5b16166217b46a5f50b3a7c2f5a8 (diff)
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util/main-loop: Avoid adding the same HANDLE twice
Fix the logic in qemu_add_wait_object() to avoid adding the same HANDLE twice, as the behavior is undefined when passing an array that contains same HANDLEs to WaitForMultipleObjects() API. Signed-off-by: Bin Meng <bin.meng@windriver.com> Message-Id: <20221019102015.2441622-2-bmeng.cn@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/qemu/main-loop.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/qemu/main-loop.h b/include/qemu/main-loop.h
index aac707d..3c9a9a9 100644
--- a/include/qemu/main-loop.h
+++ b/include/qemu/main-loop.h
@@ -157,6 +157,8 @@ typedef void WaitObjectFunc(void *opaque);
* in the main loop's calls to WaitForMultipleObjects. When the handle
* is in a signaled state, QEMU will call @func.
*
+ * If the same HANDLE is added twice, this function returns -1.
+ *
* @handle: The Windows handle to be observed.
* @func: A function to be called when @handle is in a signaled state.
* @opaque: A pointer-size value that is passed to @func.