1 /* 2 * QEMU user-only mmap lock, with stubs for system mode 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * 6 * SPDX-License-Identifier: LGPL-2.1-or-later 7 */ 8 #ifndef EXEC_MMAP_LOCK_H 9 #define EXEC_MMAP_LOCK_H 10 11 #ifdef CONFIG_USER_ONLY 12 13 void TSA_NO_TSA mmap_lock(void); 14 void TSA_NO_TSA mmap_unlock(void); 15 bool have_mmap_lock(void); 16 17 static inline void mmap_unlock_guard(void *unused) 18 { 19 mmap_unlock(); 20 } 21 22 #define WITH_MMAP_LOCK_GUARD() \ 23 for (int _mmap_lock_iter __attribute__((cleanup(mmap_unlock_guard))) \ 24 = (mmap_lock(), 0); _mmap_lock_iter == 0; _mmap_lock_iter = 1) 25 26 #else 27 28 static inline void mmap_lock(void) {} 29 static inline void mmap_unlock(void) {} 30 #define WITH_MMAP_LOCK_GUARD() 31 32 #endif /* CONFIG_USER_ONLY */ 33 #endif /* EXEC_MMAP_LOCK_H */ 34