diff options
Diffstat (limited to 'linux-user/mmap.c')
| -rw-r--r-- | linux-user/mmap.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/linux-user/mmap.c b/linux-user/mmap.c index c082138..b4ca107 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -46,6 +46,22 @@ void mmap_unlock(void) pthread_mutex_unlock(&mmap_mutex); } } + +/* Grab lock to make sure things are in a consistent state after fork(). */ +void mmap_fork_start(void) +{ + if (mmap_lock_count) + abort(); + pthread_mutex_lock(&mmap_mutex); +} + +void mmap_fork_end(int child) +{ + if (child) + pthread_mutex_init(&mmap_mutex, NULL); + else + pthread_mutex_unlock(&mmap_mutex); +} #else /* We aren't threadsafe to start with, so no need to worry about locking. */ void mmap_lock(void) |
