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ui/cocoa: Run qemu_init in the main thread

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This work is based on:
https://patchew.org/QEMU/20220317125534.38706-1-philippe.mathieu.daude@gmail.com/

Simplify the initialization dance by running qemu_init() in the main
thread before the Cocoa event loop starts. The secondary thread only
runs only qemu_main_loop() and qemu_cleanup().

This fixes a case where addRemovableDevicesMenuItems() calls
qmp_query_block() while expecting the main thread to still hold
the BQL.

Overriding the code after calling qemu_init() is done by dynamically
replacing a function pointer variable, qemu_main when initializing
ui/cocoa, which unifies the static implementation of main() for
builds with ui/cocoa and ones without ui/cocoa.

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Message-Id: <20220819132756.74641-2-akihiko.odaki@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Akihiko Odaki 2022-08-19 22:27:54 +09:00 • committed by Gerd Hoffmann
parent df6322a897
commit bab6a301c5
7 changed files with 62 additions and 105 deletions
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2
tests/qtest/fuzz/fuzz.c
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@ -218,7 +218,7 @@ int LLVMFuzzerInitialize(int *argc, char ***argv, char ***envp)
g_free(pretty_cmd_line);
}
qemu_init(result.we_wordc, result.we_wordv, NULL);
qemu_init(result.we_wordc, result.we_wordv);
/* re-enable the rcu atfork, which was previously disabled in qemu_init */
rcu_enable_atfork();