1dc16fc74b
console_handler_thread_waiter. It is obsolete. (ctrl_c_handler): Don't use console_handler_thread_waiter. * path.cc (hash_path_name): Fix handling of relative names. Make case insensitive. * path.h (suffix_info): Use initializers. * pinfo.h (_pinfo): Avoid initializers for null case. * resource.cc (fill_rusage): Zero rest of rusage structure. * security.cc (set_process_privileges): Don't reopen parent process. Just use hMainProc. * signal.cc (signal): Track when a signal handler has been used. (sigaction): Ditto. * sigproc.cc (pchildren): Use default initializer. (zombies): Ditto. (sigproc_terminate): Avoid closing handles that will be closed on exit anyway. (wait_sig): Send signal to "parent" on EXECing, not FORKing. (wait_subproc): Send SIGCHLD here rather than in proc_wait to avoid potential muto conflicts. * sigproc.h (sigthread): Don't initialize to zero. It's the default. * spawn.cc (spawn_guts): Fill in resources from exec parent prior to termination. * sync.h (muto): Don't initialize to zero. * syscalls.cc (close_all_files): Use one lock around entire loop and call fhandler close/release stuff directly. (_read): Don't use ready_for_read if there are not signal handlers active. * dcrt0.cc (dll_crt0_1): Fix display of "title". (do_exit): Use pinfo exit method to exit. (__api_fatal): Ditto. * exceptions.cc (signal_exit): Ditto. * fork.cc (fork_child): Remove debugging stuff. Use pinfo_fixup_after fork in place of exec_fixup_after_fork. * pinfo.cc (pinfo_fixup_after_fork): New method. (pinfo_fixup_in_spawned_child): Ditto. (_pinfo::exit): New method. (_pinfo::init): Remove recursion. Detect pathological case where pinfo structure already exists for new pid. * pinfo.h (_pinfo): Reorganize slightly. Add new method and new function declarations. * sigproc.cc (proc_exists): Previous simplification was a little to simple. Try harder to detect if a process exists. (proc_terminate): Use PID_EXITED setting to determine if process is still around. (WFSO): Remove debugging statement. (WFMO): Ditto. * spawn.cc (exec_fixup_after_fork): Eliminate. (spawn_guts): Always set old_title to NULL. Is it really needed? Move hexec_proc to pinfo.cc. Call pinfo_fixup_in_spawned_child to eliminate handle link after a spawn. * include/sys/cygwin.h: Remove PID_NOT_IN_USE. Add PID_EXITED.
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
/* sync.h: Header file for cygwin synchronization primitives.
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Copyright 1999, 2000 Cygnus Solutions.
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Written by Christopher Faylor <cgf@cygnus.com>
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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/* FIXME: Note that currently this class cannot be allocated via `new' since
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there are issues with malloc and fork. */
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class muto
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{
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LONG sync; /* Used to serialize access to this class. */
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LONG visits; /* Count of number of times a thread has called acquire. */
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LONG waiters; /* Number of threads waiting for lock. */
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HANDLE bruteforce; /* event handle used to control waiting for lock. */
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DWORD tid; /* Thread Id of lock owner. */
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public:
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class muto *next;
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const char *name;
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void *operator new (size_t, void *p) {return p;}
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void *operator new (size_t) {return ::new muto; }
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void operator delete (void *) {;} /* can't handle allocated mutos
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currently */
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muto() {}
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/* The real constructor. */
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muto(int inh, const char *name);
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~muto ();
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int acquire (DWORD ms = INFINITE); /* Acquire the lock. */
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int release (); /* Release the lock. */
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/* Return true if caller thread owns the lock. */
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int ismine () {return tid == GetCurrentThreadId ();}
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DWORD owner () {return tid;}
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int unstable () {return !tid && (sync || waiters >= 0);}
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void reset ();
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};
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extern muto muto_start;
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/* Use a statically allocated buffer as the storage for a muto */
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#define new_muto(__inh, __name) \
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({ \
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static __attribute__((section(".data_cygwin_nocopy"))) muto __mbuf; \
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(void) new ((char *) &__mbuf) muto (__inh, __name); \
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__mbuf.next = muto_start.next; \
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muto_start.next = &__mbuf; \
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&__mbuf; \
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})
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