util: Use unique type for QemuRecMutex in thread-posix.h
We will shortly convert lockable.h to _Generic, and we cannot have two compatible types in the same expansion. Wrap QemuMutex in a struct, and unwrap in qemu-thread-posix.c. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20210614233143.1221879-6-richard.henderson@linaro.org>
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@ -4,8 +4,6 @@
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#include <pthread.h>
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#include <semaphore.h>
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typedef QemuMutex QemuRecMutex;
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struct QemuMutex {
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pthread_mutex_t lock;
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#ifdef CONFIG_DEBUG_MUTEX
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@ -15,6 +13,14 @@ struct QemuMutex {
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bool initialized;
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};
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/*
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* QemuRecMutex cannot be a typedef of QemuMutex lest we have two
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* compatible cases in _Generic. See qemu/lockable.h.
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*/
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typedef struct QemuRecMutex {
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QemuMutex m;
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} QemuRecMutex;
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struct QemuCond {
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pthread_cond_t cond;
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bool initialized;
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@ -116,32 +116,32 @@ void qemu_rec_mutex_init(QemuRecMutex *mutex)
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pthread_mutexattr_init(&attr);
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pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
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err = pthread_mutex_init(&mutex->lock, &attr);
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err = pthread_mutex_init(&mutex->m.lock, &attr);
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pthread_mutexattr_destroy(&attr);
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if (err) {
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error_exit(err, __func__);
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}
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mutex->initialized = true;
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mutex->m.initialized = true;
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}
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void qemu_rec_mutex_destroy(QemuRecMutex *mutex)
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{
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qemu_mutex_destroy(mutex);
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qemu_mutex_destroy(&mutex->m);
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}
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void qemu_rec_mutex_lock_impl(QemuRecMutex *mutex, const char *file, int line)
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{
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qemu_mutex_lock_impl(mutex, file, line);
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qemu_mutex_lock_impl(&mutex->m, file, line);
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}
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int qemu_rec_mutex_trylock_impl(QemuRecMutex *mutex, const char *file, int line)
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{
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return qemu_mutex_trylock_impl(mutex, file, line);
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return qemu_mutex_trylock_impl(&mutex->m, file, line);
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}
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void qemu_rec_mutex_unlock_impl(QemuRecMutex *mutex, const char *file, int line)
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{
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qemu_mutex_unlock_impl(mutex, file, line);
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qemu_mutex_unlock_impl(&mutex->m, file, line);
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}
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void qemu_cond_init(QemuCond *cond)
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