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Cygwin: FIFO: add a spinlock

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Don't let listen_client_thread and raw_read access the client list
simultaneously.
This commit is contained in:
Ken Brown
2019-03-22 19:30:38 +00:00
committed by Corinna Vinschen
parent 48d4cce3be
commit c75e077f99
2 changed files with 28 additions and 9 deletions
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3
winsup/cygwin/fhandler.h
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@@ -1267,6 +1267,7 @@ class fhandler_fifo: public fhandler_base
WCHAR pipe_name_buf[CYGWIN_FIFO_PIPE_NAME_LEN + 1];
fifo_client_handler client[MAX_CLIENTS];
int nclients, nconnected;
af_unix_spinlock_t _fifo_client_lock;
bool __reg2 wait (HANDLE);
NTSTATUS npfs_handle (HANDLE &);
HANDLE create_pipe_instance (bool);
@@ -1278,6 +1279,8 @@ public:
fhandler_fifo ();
PUNICODE_STRING get_pipe_name ();
DWORD listen_client_thread ();
void fifo_client_lock () { _fifo_client_lock.lock (); }
void fifo_client_unlock () { _fifo_client_lock.unlock (); }
int open (int, mode_t);
off_t lseek (off_t offset, int whence);
int close ();