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Diffstat (limited to 'winsup/cygwin/sync.h')
-rw-r--r-- | winsup/cygwin/sync.h | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/winsup/cygwin/sync.h b/winsup/cygwin/sync.h deleted file mode 100644 index 18cff7800..000000000 --- a/winsup/cygwin/sync.h +++ /dev/null @@ -1,48 +0,0 @@ -/* sync.h: Header file for cygwin synchronization primitives. - - Copyright 1999 Cygnus Solutions. - - Written by Christopher Faylor <cgf@cygnus.com> - -This file is part of Cygwin. - -This software is a copyrighted work licensed under the terms of the -Cygwin license. Please consult the file "CYGWIN_LICENSE" for -details. */ - -/* FIXME: Note that currently this class cannot be allocated via `new' since - there are issues with malloc and fork. */ -class muto -{ - LONG sync; /* Used to serialize access to this class. */ - LONG visits; /* Count of number of times a thread has called acquire. */ - LONG waiters; /* Number of threads waiting for lock. */ - HANDLE bruteforce; /* event handle used to control waiting for lock. */ - DWORD tid; /* Thread Id of lock owner. */ -public: - void *operator new (size_t, void *p) {return p;} - void *operator new (size_t n) {return ::new muto; } - void operator delete (void *p) {;} /* can't handle allocated mutos - currently */ - - /* This simple constructor is used for cases where no bruteforce - event handling is required. */ - muto(): sync(0), visits(0), waiters(-1), bruteforce(0), tid(0) {;} - /* A more complicated constructor. */ - muto(int inh, const char *name); - ~muto (); - int acquire (DWORD ms = INFINITE); /* Acquire the lock. */ - int release (); /* Release the lock. */ - - /* Return true if caller thread owns the lock. */ - int ismine () {return tid == GetCurrentThreadId ();} -}; - -/* Use a statically allocated buffer as the storage for a muto */ -#define new_muto(__inh, __name) \ -({ \ - static NO_COPY char __mbuf[sizeof(class muto) + 100] = {0}; \ - muto *m; \ - m = new (__mbuf) muto ((__inh), (__name)); \ - m; \ -}) |