newlib-cygwin/winsup/cygserver/bsd_mutex.h

/* bsd_mutex.h: BSD Mutex helper

   Copyright 2003, 2005 Red Hat, Inc.

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. */
#ifndef _BSD_MUTEX_H
#define _BSD_MUTEX_H

#define MTX_DEF 0

#define MA_OWNED 1
#define MA_NOTOWNED 2

#define PZERO	  (0x20)
#define PRIO_MASK (0x1f)
#define PDROP  0x1000
#define PCATCH 0x2000
#define PLOCK  0x3000

struct mtx {
  HANDLE h;
  const char *name;
  DWORD owner;
  unsigned long cnt;
};

/* Some BSD kernel global mutex. */
extern struct mtx Giant;

void mtx_init (mtx *, const char *, const void *, int);
void _mtx_lock (mtx *, DWORD winpid, const char *, int);
#define mtx_lock(m) _mtx_lock((m), (td->ipcblk->winpid), __FILE__, __LINE__)
int mtx_owned (mtx *, DWORD);
void _mtx_assert(mtx *, int, DWORD winpid, const char *, int);
#define mtx_assert(m,w,p) _mtx_assert((m),(w),(p),__FILE__,__LINE__)
void _mtx_unlock (mtx *, const char *, int);
#define mtx_unlock(m) _mtx_unlock((m),__FILE__,__LINE__)

void mtx_destroy (mtx *);

void msleep_init (void);
int _msleep (void *, struct mtx *, int, const char *, int, struct thread *);
#define msleep(i,m,p,w,t) _msleep((i),(m),(p),(w),(t),(td))
#define tsleep(i,p,w,t)   _msleep((i),NULL,(p),(w),(t),(td))
int wakeup (void *);
void wakeup_all (void);

#endif /* _BSD_MUTEX_H */
Don't use safe_new but new throughout. Fix copyright dates throughout. * Makefile.in: Accomodate all new files and name changes. Add a .d dependency. (sbindir): Add. (etcdir): Drop in favor of more appropriate sysconfdir definition. (sysconfdir): Add. (CXXFLAGS): Add -MMD flag. Add SYSCONFDIR definition. (.SUFFIXES): Add. (install): Add action items. (libclean): New target. (fullclean): Ditto. bsd_helper.cc: New file. * bsd_helper.h: Ditto. * bsd_log.cc: Ditto. * bsd_log.h: Ditto. * bsd_mutex.cc: Ditto. * bsd_mutex.h: Ditto. * client.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. (client_request::handle_request): Add Message Queue and Semaphore handling. * cygserver.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. Use new debug/log/panic logging functions. (DEF_CONFIG_FILE): New definition for configuration file. Use throughout. (getfunc): Remove. (__cygserver__printf): Remove. (client_request_attach_tty::serve): Return error if impersonation fails. (print_usage): Pump up help message. (print_version): Add output of default configuration file. (main): Accommodate new options. Allow overwrite of threading options from config file. Call several new initialization functions. Drop printing dots. Don't define SIGHANDLE inline. * cygserver.conf: New file. * cygserver_process.h: Rename to process.h. * cygserver_transport.h: Rename to transport.h. * cygserver_transport_pipes.h: Rename to transport_pipes.h. * cygserver_transport_sockets.h: Rename to transport_sockets.h. * msg.cc: Rewrite. * sem.cc: Rewrite. * shm.cc: Rewrite. * sysv_msg.cc: New file, derived from FreeBSD version 1.52. * sysv_sem.cc: New file, derived from FreeBSD version 1.66. * sysv_shm.cc: New file, derived from FreeBSD version 1.89. * threaded_queue.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. * transport.cc (transport_layer_base::impersonate_client): Define bool. (transport_layer_base::revert_to_self): Ditto. * transport.h (transport_layer_base::impersonate_client): Declare bool. (transport_layer_base::revert_to_self): Ditto. * transport_pipes.cc (transport_layer_pipes::transport_layer_pipes): Don't call init_security. (init_security): Remove. (transport_layer_pipes::accept): Use global sec_all_nih. (transport_layer_pipes::connect): Ditto. (transport_layer_pipes::impersonate_client): Define bool. (transport_layer_pipes::revert_to_self): Ditt. * transport_pipes.h (transport_layer_pipes::impersonate_client): Declare bool. (transport_layer_pipes::revert_to_self): Ditto. * woutsup.h: Include bsd compatibility headers. (SIGHANDLE): Add definition. (__cygserver__printf): Remove definition. (__noop_printf): Ditto. (debug_printf): Define using debug. (syscall_printf): Define using log. (system_printf): Ditto. Drop all other _printf definitions. 2003-11-19 18:49:41 +00:00			`/* bsd_mutex.h: BSD Mutex helper`

* bsd_helper.cc (ipcexit_hookthread): Fix whitespace and handle leak. * bsd_mutex.cc: Include stdlib.h, sys/msg.h and sys/sem.h. (mtx_init): Initialize lock counter to 0. (_mtx_lock): Increment and log mutex lock counter. (mtx_owned): Add winpid argument. Return true only if mutex is actually owned by process winpid. (_mtx_assert): Add winpid argument accordingly. (_mtx_unlock): Log owner and lock count. (MSLEEP_MUTEX): Remove. (MSLEEP_SEM): Ditto. (MSLEEP_EVENT): Ditto. (msleep_event_name): Ditto. (msleep_cs): New global critical section. (msleep_cnt): New global variable indicating msleep record usage. (msleep_max_cnt): New global variable indicating msleep record size. (msleep_arr): New global pointer to msleep records. (msleep_init): Initialize msleep_cs. Allocate msleep_arr array. (_msleep): Rewrite using new msleep_cs/msleep_arr based thread synchronization. Don't be shy with debug output. (wakeup): Rewrite using new msleep_cs/msleep_arr based thread synchronization. * bsd_mutex.h (struct mtx): Add lock counter for better debugging. (mtx_owned): Declare with winpid argument. (_mtx_assert): Ditto. (mtx_assert): Define with winpid argument. * cygserver.cc (version): Remove. (SERVER_VERSION): New define, decoupling server version information from source code control system. (print_version): Simplify printing server version. * process.cc (process::process): Fix wrong bracketing (and handle leak). (process::~process): Only try to close _signal_arrived if valid. * sysv_sem.cc: Include sys/smallprint.h. (semundo_clear): Define with additional struct thread pointer argument. Accomodate throughout. (SEMUNDO_LOCKASSERT): Define with winpid argument. Accomodate throughout. (struct sem_undo): Define un_proc as pid_t on Cygwin. Accomodate throughout. (seminit): Improve debugging by adding the semid to the mutex name. (semget): Correctly print key value as 64 bit hex value in debug output. (semexit_myhook): Remove Cygwin specific unlocking of mutexes owned by exiting process. Keep semaphore global lock throughout whole function to avoid races. * sysv_shm.cc (GIANT_REQUIRED): Define empty on Cygwin. We know that Giant is locked. 2005-04-06 11:11:07 +00:00			`Copyright 2003, 2005 Red Hat, Inc.`
Don't use safe_new but new throughout. Fix copyright dates throughout. * Makefile.in: Accomodate all new files and name changes. Add a .d dependency. (sbindir): Add. (etcdir): Drop in favor of more appropriate sysconfdir definition. (sysconfdir): Add. (CXXFLAGS): Add -MMD flag. Add SYSCONFDIR definition. (.SUFFIXES): Add. (install): Add action items. (libclean): New target. (fullclean): Ditto. bsd_helper.cc: New file. * bsd_helper.h: Ditto. * bsd_log.cc: Ditto. * bsd_log.h: Ditto. * bsd_mutex.cc: Ditto. * bsd_mutex.h: Ditto. * client.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. (client_request::handle_request): Add Message Queue and Semaphore handling. * cygserver.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. Use new debug/log/panic logging functions. (DEF_CONFIG_FILE): New definition for configuration file. Use throughout. (getfunc): Remove. (__cygserver__printf): Remove. (client_request_attach_tty::serve): Return error if impersonation fails. (print_usage): Pump up help message. (print_version): Add output of default configuration file. (main): Accommodate new options. Allow overwrite of threading options from config file. Call several new initialization functions. Drop printing dots. Don't define SIGHANDLE inline. * cygserver.conf: New file. * cygserver_process.h: Rename to process.h. * cygserver_transport.h: Rename to transport.h. * cygserver_transport_pipes.h: Rename to transport_pipes.h. * cygserver_transport_sockets.h: Rename to transport_sockets.h. * msg.cc: Rewrite. * sem.cc: Rewrite. * shm.cc: Rewrite. * sysv_msg.cc: New file, derived from FreeBSD version 1.52. * sysv_sem.cc: New file, derived from FreeBSD version 1.66. * sysv_shm.cc: New file, derived from FreeBSD version 1.89. * threaded_queue.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. * transport.cc (transport_layer_base::impersonate_client): Define bool. (transport_layer_base::revert_to_self): Ditto. * transport.h (transport_layer_base::impersonate_client): Declare bool. (transport_layer_base::revert_to_self): Ditto. * transport_pipes.cc (transport_layer_pipes::transport_layer_pipes): Don't call init_security. (init_security): Remove. (transport_layer_pipes::accept): Use global sec_all_nih. (transport_layer_pipes::connect): Ditto. (transport_layer_pipes::impersonate_client): Define bool. (transport_layer_pipes::revert_to_self): Ditt. * transport_pipes.h (transport_layer_pipes::impersonate_client): Declare bool. (transport_layer_pipes::revert_to_self): Ditto. * woutsup.h: Include bsd compatibility headers. (SIGHANDLE): Add definition. (__cygserver__printf): Remove definition. (__noop_printf): Ditto. (debug_printf): Define using debug. (syscall_printf): Define using log. (system_printf): Ditto. Drop all other _printf definitions. 2003-11-19 18:49:41 +00:00
			`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. */`
			`#ifndef _BSD_MUTEX_H`
			`#define _BSD_MUTEX_H`

			`#define MTX_DEF 0`

			`#define MA_OWNED 1`
			`#define MA_NOTOWNED 2`

			`#define PZERO (0x20)`
			`#define PRIO_MASK (0x1f)`
			`#define PDROP 0x1000`
			`#define PCATCH 0x2000`
			`#define PLOCK 0x3000`

			`struct mtx {`
			`HANDLE h;`
			`const char *name;`
			`DWORD owner;`
* bsd_helper.cc (ipcexit_hookthread): Fix whitespace and handle leak. * bsd_mutex.cc: Include stdlib.h, sys/msg.h and sys/sem.h. (mtx_init): Initialize lock counter to 0. (_mtx_lock): Increment and log mutex lock counter. (mtx_owned): Add winpid argument. Return true only if mutex is actually owned by process winpid. (_mtx_assert): Add winpid argument accordingly. (_mtx_unlock): Log owner and lock count. (MSLEEP_MUTEX): Remove. (MSLEEP_SEM): Ditto. (MSLEEP_EVENT): Ditto. (msleep_event_name): Ditto. (msleep_cs): New global critical section. (msleep_cnt): New global variable indicating msleep record usage. (msleep_max_cnt): New global variable indicating msleep record size. (msleep_arr): New global pointer to msleep records. (msleep_init): Initialize msleep_cs. Allocate msleep_arr array. (_msleep): Rewrite using new msleep_cs/msleep_arr based thread synchronization. Don't be shy with debug output. (wakeup): Rewrite using new msleep_cs/msleep_arr based thread synchronization. * bsd_mutex.h (struct mtx): Add lock counter for better debugging. (mtx_owned): Declare with winpid argument. (_mtx_assert): Ditto. (mtx_assert): Define with winpid argument. * cygserver.cc (version): Remove. (SERVER_VERSION): New define, decoupling server version information from source code control system. (print_version): Simplify printing server version. * process.cc (process::process): Fix wrong bracketing (and handle leak). (process::~process): Only try to close _signal_arrived if valid. * sysv_sem.cc: Include sys/smallprint.h. (semundo_clear): Define with additional struct thread pointer argument. Accomodate throughout. (SEMUNDO_LOCKASSERT): Define with winpid argument. Accomodate throughout. (struct sem_undo): Define un_proc as pid_t on Cygwin. Accomodate throughout. (seminit): Improve debugging by adding the semid to the mutex name. (semget): Correctly print key value as 64 bit hex value in debug output. (semexit_myhook): Remove Cygwin specific unlocking of mutexes owned by exiting process. Keep semaphore global lock throughout whole function to avoid races. * sysv_shm.cc (GIANT_REQUIRED): Define empty on Cygwin. We know that Giant is locked. 2005-04-06 11:11:07 +00:00			`unsigned long cnt;`
Don't use safe_new but new throughout. Fix copyright dates throughout. * Makefile.in: Accomodate all new files and name changes. Add a .d dependency. (sbindir): Add. (etcdir): Drop in favor of more appropriate sysconfdir definition. (sysconfdir): Add. (CXXFLAGS): Add -MMD flag. Add SYSCONFDIR definition. (.SUFFIXES): Add. (install): Add action items. (libclean): New target. (fullclean): Ditto. bsd_helper.cc: New file. * bsd_helper.h: Ditto. * bsd_log.cc: Ditto. * bsd_log.h: Ditto. * bsd_mutex.cc: Ditto. * bsd_mutex.h: Ditto. * client.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. (client_request::handle_request): Add Message Queue and Semaphore handling. * cygserver.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. Use new debug/log/panic logging functions. (DEF_CONFIG_FILE): New definition for configuration file. Use throughout. (getfunc): Remove. (__cygserver__printf): Remove. (client_request_attach_tty::serve): Return error if impersonation fails. (print_usage): Pump up help message. (print_version): Add output of default configuration file. (main): Accommodate new options. Allow overwrite of threading options from config file. Call several new initialization functions. Drop printing dots. Don't define SIGHANDLE inline. * cygserver.conf: New file. * cygserver_process.h: Rename to process.h. * cygserver_transport.h: Rename to transport.h. * cygserver_transport_pipes.h: Rename to transport_pipes.h. * cygserver_transport_sockets.h: Rename to transport_sockets.h. * msg.cc: Rewrite. * sem.cc: Rewrite. * shm.cc: Rewrite. * sysv_msg.cc: New file, derived from FreeBSD version 1.52. * sysv_sem.cc: New file, derived from FreeBSD version 1.66. * sysv_shm.cc: New file, derived from FreeBSD version 1.89. * threaded_queue.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. * transport.cc (transport_layer_base::impersonate_client): Define bool. (transport_layer_base::revert_to_self): Ditto. * transport.h (transport_layer_base::impersonate_client): Declare bool. (transport_layer_base::revert_to_self): Ditto. * transport_pipes.cc (transport_layer_pipes::transport_layer_pipes): Don't call init_security. (init_security): Remove. (transport_layer_pipes::accept): Use global sec_all_nih. (transport_layer_pipes::connect): Ditto. (transport_layer_pipes::impersonate_client): Define bool. (transport_layer_pipes::revert_to_self): Ditt. * transport_pipes.h (transport_layer_pipes::impersonate_client): Declare bool. (transport_layer_pipes::revert_to_self): Ditto. * woutsup.h: Include bsd compatibility headers. (SIGHANDLE): Add definition. (__cygserver__printf): Remove definition. (__noop_printf): Ditto. (debug_printf): Define using debug. (syscall_printf): Define using log. (system_printf): Ditto. Drop all other _printf definitions. 2003-11-19 18:49:41 +00:00			`};`

			`/* Some BSD kernel global mutex. */`
			`extern struct mtx Giant;`

			`void mtx_init (mtx , const char , const void *, int);`
			`void _mtx_lock (mtx , DWORD winpid, const char , int);`
			`#define mtx_lock(m) _mtx_lock((m), (td->ipcblk->winpid), __FILE__, __LINE__)`
* bsd_helper.cc (ipcexit_hookthread): Fix whitespace and handle leak. * bsd_mutex.cc: Include stdlib.h, sys/msg.h and sys/sem.h. (mtx_init): Initialize lock counter to 0. (_mtx_lock): Increment and log mutex lock counter. (mtx_owned): Add winpid argument. Return true only if mutex is actually owned by process winpid. (_mtx_assert): Add winpid argument accordingly. (_mtx_unlock): Log owner and lock count. (MSLEEP_MUTEX): Remove. (MSLEEP_SEM): Ditto. (MSLEEP_EVENT): Ditto. (msleep_event_name): Ditto. (msleep_cs): New global critical section. (msleep_cnt): New global variable indicating msleep record usage. (msleep_max_cnt): New global variable indicating msleep record size. (msleep_arr): New global pointer to msleep records. (msleep_init): Initialize msleep_cs. Allocate msleep_arr array. (_msleep): Rewrite using new msleep_cs/msleep_arr based thread synchronization. Don't be shy with debug output. (wakeup): Rewrite using new msleep_cs/msleep_arr based thread synchronization. * bsd_mutex.h (struct mtx): Add lock counter for better debugging. (mtx_owned): Declare with winpid argument. (_mtx_assert): Ditto. (mtx_assert): Define with winpid argument. * cygserver.cc (version): Remove. (SERVER_VERSION): New define, decoupling server version information from source code control system. (print_version): Simplify printing server version. * process.cc (process::process): Fix wrong bracketing (and handle leak). (process::~process): Only try to close _signal_arrived if valid. * sysv_sem.cc: Include sys/smallprint.h. (semundo_clear): Define with additional struct thread pointer argument. Accomodate throughout. (SEMUNDO_LOCKASSERT): Define with winpid argument. Accomodate throughout. (struct sem_undo): Define un_proc as pid_t on Cygwin. Accomodate throughout. (seminit): Improve debugging by adding the semid to the mutex name. (semget): Correctly print key value as 64 bit hex value in debug output. (semexit_myhook): Remove Cygwin specific unlocking of mutexes owned by exiting process. Keep semaphore global lock throughout whole function to avoid races. * sysv_shm.cc (GIANT_REQUIRED): Define empty on Cygwin. We know that Giant is locked. 2005-04-06 11:11:07 +00:00			`int mtx_owned (mtx *, DWORD);`
			`void _mtx_assert(mtx , int, DWORD winpid, const char , int);`
			`#define mtx_assert(m,w,p) _mtx_assert((m),(w),(p),__FILE__,__LINE__)`
Don't use safe_new but new throughout. Fix copyright dates throughout. * Makefile.in: Accomodate all new files and name changes. Add a .d dependency. (sbindir): Add. (etcdir): Drop in favor of more appropriate sysconfdir definition. (sysconfdir): Add. (CXXFLAGS): Add -MMD flag. Add SYSCONFDIR definition. (.SUFFIXES): Add. (install): Add action items. (libclean): New target. (fullclean): Ditto. bsd_helper.cc: New file. * bsd_helper.h: Ditto. * bsd_log.cc: Ditto. * bsd_log.h: Ditto. * bsd_mutex.cc: Ditto. * bsd_mutex.h: Ditto. * client.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. (client_request::handle_request): Add Message Queue and Semaphore handling. * cygserver.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. Use new debug/log/panic logging functions. (DEF_CONFIG_FILE): New definition for configuration file. Use throughout. (getfunc): Remove. (__cygserver__printf): Remove. (client_request_attach_tty::serve): Return error if impersonation fails. (print_usage): Pump up help message. (print_version): Add output of default configuration file. (main): Accommodate new options. Allow overwrite of threading options from config file. Call several new initialization functions. Drop printing dots. Don't define SIGHANDLE inline. * cygserver.conf: New file. * cygserver_process.h: Rename to process.h. * cygserver_transport.h: Rename to transport.h. * cygserver_transport_pipes.h: Rename to transport_pipes.h. * cygserver_transport_sockets.h: Rename to transport_sockets.h. * msg.cc: Rewrite. * sem.cc: Rewrite. * shm.cc: Rewrite. * sysv_msg.cc: New file, derived from FreeBSD version 1.52. * sysv_sem.cc: New file, derived from FreeBSD version 1.66. * sysv_shm.cc: New file, derived from FreeBSD version 1.89. * threaded_queue.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. * transport.cc (transport_layer_base::impersonate_client): Define bool. (transport_layer_base::revert_to_self): Ditto. * transport.h (transport_layer_base::impersonate_client): Declare bool. (transport_layer_base::revert_to_self): Ditto. * transport_pipes.cc (transport_layer_pipes::transport_layer_pipes): Don't call init_security. (init_security): Remove. (transport_layer_pipes::accept): Use global sec_all_nih. (transport_layer_pipes::connect): Ditto. (transport_layer_pipes::impersonate_client): Define bool. (transport_layer_pipes::revert_to_self): Ditt. * transport_pipes.h (transport_layer_pipes::impersonate_client): Declare bool. (transport_layer_pipes::revert_to_self): Ditto. * woutsup.h: Include bsd compatibility headers. (SIGHANDLE): Add definition. (__cygserver__printf): Remove definition. (__noop_printf): Ditto. (debug_printf): Define using debug. (syscall_printf): Define using log. (system_printf): Ditto. Drop all other _printf definitions. 2003-11-19 18:49:41 +00:00			`void _mtx_unlock (mtx , const char , int);`
			`#define mtx_unlock(m) _mtx_unlock((m),__FILE__,__LINE__)`

			`void mtx_destroy (mtx *);`

			`void msleep_init (void);`
			`int _msleep (void , struct mtx , int, const char , int, struct thread );`
			`#define msleep(i,m,p,w,t) _msleep((i),(m),(p),(w),(t),(td))`
			`#define tsleep(i,p,w,t) _msleep((i),NULL,(p),(w),(t),(td))`
			`int wakeup (void *);`
			`void wakeup_all (void);`

			`#endif /* _BSD_MUTEX_H */`