| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS -- |
| -- -- |
| -- S Y S T E M . O S _ I N T E R F A C E -- |
| -- -- |
| -- S p e c -- |
| -- (GNU/Linux-HPPA Version) -- |
| -- -- |
| -- Copyright (C) 1991-1994, Florida State University -- |
| -- Copyright (C) 1995-2006, Free Software Foundation, Inc. -- |
| -- -- |
| -- GNARL is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 2, or (at your option) any later ver- -- |
| -- sion. GNARL is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNARL; see file COPYING. If not, write -- |
| -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- |
| -- Boston, MA 02110-1301, USA. -- |
| -- -- |
| -- As a special exception, if other files instantiate generics from this -- |
| -- unit, or you link this unit with other files to produce an executable, -- |
| -- this unit does not by itself cause the resulting executable to be -- |
| -- covered by the GNU General Public License. This exception does not -- |
| -- however invalidate any other reasons why the executable file might be -- |
| -- covered by the GNU Public License. -- |
| -- -- |
| -- GNARL was developed by the GNARL team at Florida State University. -- |
| -- Extensive contributions were provided by Ada Core Technologies, Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This is a GNU/Linux (GNU/LinuxThreads) version of this package |
| |
| -- This package encapsulates all direct interfaces to OS services |
| -- that are needed by children of System. |
| |
| -- PLEASE DO NOT add any with-clauses to this package or remove the pragma |
| -- Preelaborate. This package is designed to be a bottom-level (leaf) package. |
| |
| with Interfaces.C; |
| with Unchecked_Conversion; |
| |
| package System.OS_Interface is |
| pragma Preelaborate; |
| |
| pragma Linker_Options ("-lpthread"); |
| |
| subtype int is Interfaces.C.int; |
| subtype char is Interfaces.C.char; |
| subtype short is Interfaces.C.short; |
| subtype long is Interfaces.C.long; |
| subtype unsigned is Interfaces.C.unsigned; |
| subtype unsigned_short is Interfaces.C.unsigned_short; |
| subtype unsigned_long is Interfaces.C.unsigned_long; |
| subtype unsigned_char is Interfaces.C.unsigned_char; |
| subtype plain_char is Interfaces.C.plain_char; |
| subtype size_t is Interfaces.C.size_t; |
| |
| ----------- |
| -- Errno -- |
| ----------- |
| |
| function errno return int; |
| pragma Import (C, errno, "__get_errno"); |
| |
| EAGAIN : constant := 11; |
| EINTR : constant := 4; |
| EINVAL : constant := 22; |
| ENOMEM : constant := 12; |
| EPERM : constant := 1; |
| ETIMEDOUT : constant := 238; |
| |
| ------------- |
| -- Signals -- |
| ------------- |
| |
| Max_Interrupt : constant := 63; |
| type Signal is new int range 0 .. Max_Interrupt; |
| for Signal'Size use int'Size; |
| |
| SIGHUP : constant := 1; -- hangup |
| SIGINT : constant := 2; -- interrupt (rubout) |
| SIGQUIT : constant := 3; -- quit (ASCD FS) |
| SIGILL : constant := 4; -- illegal instruction (not reset) |
| SIGTRAP : constant := 5; -- trace trap (not reset) |
| SIGIOT : constant := 6; -- IOT instruction |
| SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future |
| SIGEMT : constant := 7; -- EMT |
| SIGFPE : constant := 8; -- floating point exception |
| SIGKILL : constant := 9; -- kill (cannot be caught or ignored) |
| SIGBUS : constant := 10; -- bus error |
| SIGSEGV : constant := 11; -- segmentation violation |
| SIGSYS : constant := 12; -- bad system call |
| SIGPIPE : constant := 13; -- write on a pipe with no one to read it |
| SIGALRM : constant := 14; -- alarm clock |
| SIGTERM : constant := 15; -- software termination signal from kill |
| SIGUSR1 : constant := 16; -- user defined signal 1 |
| SIGUSR2 : constant := 17; -- user defined signal 2 |
| SIGCLD : constant := 18; -- alias for SIGCHLD |
| SIGCHLD : constant := 18; -- child status change |
| SIGPWR : constant := 19; -- power-fail restart |
| SIGVTALRM : constant := 20; -- virtual timer expired |
| SIGPROF : constant := 21; -- profiling timer expired |
| SIGPOLL : constant := 22; -- pollable event occurred |
| SIGIO : constant := 22; -- I/O now possible (4.2 BSD) |
| SIGWINCH : constant := 23; -- window size change |
| SIGSTOP : constant := 24; -- stop (cannot be caught or ignored) |
| SIGTSTP : constant := 25; -- user stop requested from tty |
| SIGCONT : constant := 26; -- stopped process has been continued |
| SIGTTIN : constant := 27; -- background tty read attempted |
| SIGTTOU : constant := 28; -- background tty write attempted |
| SIGURG : constant := 29; -- urgent condition on IO channel |
| SIGLOST : constant := 30; -- File lock lost |
| SIGUNUSED : constant := 31; -- unused signal (GNU/Linux) |
| SIGXCPU : constant := 33; -- CPU time limit exceeded |
| SIGXFSZ : constant := 34; -- filesize limit exceeded |
| SIGSTKFLT : constant := 36; -- coprocessor stack fault (Linux) |
| SIGLTHRRES : constant := 37; -- GNU/LinuxThreads restart signal |
| SIGLTHRCAN : constant := 38; -- GNU/LinuxThreads cancel signal |
| SIGLTHRDBG : constant := 39; -- GNU/LinuxThreads debugger signal |
| |
| SIGADAABORT : constant := SIGABRT; |
| -- Change this if you want to use another signal for task abort. |
| -- SIGTERM might be a good one. |
| |
| type Signal_Set is array (Natural range <>) of Signal; |
| |
| Unmasked : constant Signal_Set := ( |
| SIGTRAP, |
| -- To enable debugging on multithreaded applications, mark SIGTRAP to |
| -- be kept unmasked. |
| |
| SIGBUS, |
| |
| SIGTTIN, SIGTTOU, SIGTSTP, |
| -- Keep these three signals unmasked so that background processes |
| -- and IO behaves as normal "C" applications |
| |
| SIGPROF, |
| -- To avoid confusing the profiler |
| |
| SIGKILL, SIGSTOP, |
| -- These two signals actually cannot be masked; |
| -- POSIX simply won't allow it. |
| |
| SIGLTHRRES, SIGLTHRCAN, SIGLTHRDBG); |
| -- These three signals are used by GNU/LinuxThreads starting from |
| -- glibc 2.1 (future 2.2). |
| |
| Reserved : constant Signal_Set := |
| -- I am not sure why the following two signals are reserved. |
| -- I guess they are not supported by this version of GNU/Linux. |
| (SIGVTALRM, SIGUNUSED); |
| |
| type sigset_t is private; |
| |
| function sigaddset (set : access sigset_t; sig : Signal) return int; |
| pragma Import (C, sigaddset, "sigaddset"); |
| |
| function sigdelset (set : access sigset_t; sig : Signal) return int; |
| pragma Import (C, sigdelset, "sigdelset"); |
| |
| function sigfillset (set : access sigset_t) return int; |
| pragma Import (C, sigfillset, "sigfillset"); |
| |
| function sigismember (set : access sigset_t; sig : Signal) return int; |
| pragma Import (C, sigismember, "sigismember"); |
| |
| function sigemptyset (set : access sigset_t) return int; |
| pragma Import (C, sigemptyset, "sigemptyset"); |
| |
| type union_type_3 is new String (1 .. 116); |
| type siginfo_t is record |
| si_signo : int; |
| si_code : int; |
| si_errno : int; |
| X_data : union_type_3; |
| end record; |
| pragma Convention (C, siginfo_t); |
| |
| type struct_sigaction is record |
| sa_handler : System.Address; |
| sa_flags : unsigned_long; |
| sa_mask : sigset_t; |
| end record; |
| pragma Convention (C, struct_sigaction); |
| type struct_sigaction_ptr is access all struct_sigaction; |
| |
| type Machine_State is record |
| eip : unsigned_long; |
| ebx : unsigned_long; |
| esp : unsigned_long; |
| ebp : unsigned_long; |
| esi : unsigned_long; |
| edi : unsigned_long; |
| end record; |
| type Machine_State_Ptr is access all Machine_State; |
| |
| SA_SIGINFO : constant := 16; |
| |
| SIG_BLOCK : constant := 0; |
| SIG_UNBLOCK : constant := 1; |
| SIG_SETMASK : constant := 2; |
| |
| SIG_DFL : constant := 0; |
| SIG_IGN : constant := 1; |
| |
| function sigaction |
| (sig : Signal; |
| act : struct_sigaction_ptr; |
| oact : struct_sigaction_ptr) return int; |
| pragma Import (C, sigaction, "sigaction"); |
| |
| ---------- |
| -- Time -- |
| ---------- |
| |
| type timespec is private; |
| |
| function To_Duration (TS : timespec) return Duration; |
| pragma Inline (To_Duration); |
| |
| function To_Timespec (D : Duration) return timespec; |
| pragma Inline (To_Timespec); |
| |
| type struct_timeval is private; |
| |
| function To_Duration (TV : struct_timeval) return Duration; |
| pragma Inline (To_Duration); |
| |
| function To_Timeval (D : Duration) return struct_timeval; |
| pragma Inline (To_Timeval); |
| |
| function gettimeofday |
| (tv : access struct_timeval; |
| tz : System.Address := System.Null_Address) return int; |
| pragma Import (C, gettimeofday, "gettimeofday"); |
| |
| function sysconf (name : int) return long; |
| pragma Import (C, sysconf); |
| |
| SC_CLK_TCK : constant := 2; |
| |
| ------------------------- |
| -- Priority Scheduling -- |
| ------------------------- |
| |
| SCHED_OTHER : constant := 0; |
| SCHED_FIFO : constant := 1; |
| SCHED_RR : constant := 2; |
| |
| ------------- |
| -- Process -- |
| ------------- |
| |
| type pid_t is private; |
| |
| function kill (pid : pid_t; sig : Signal) return int; |
| pragma Import (C, kill, "kill"); |
| |
| function getpid return pid_t; |
| pragma Import (C, getpid, "getpid"); |
| |
| ------------- |
| -- Threads -- |
| ------------- |
| |
| type Thread_Body is access |
| function (arg : System.Address) return System.Address; |
| |
| function Thread_Body_Access is new |
| Unchecked_Conversion (System.Address, Thread_Body); |
| |
| type pthread_t is new unsigned_long; |
| subtype Thread_Id is pthread_t; |
| |
| function To_pthread_t is new Unchecked_Conversion |
| (unsigned_long, pthread_t); |
| |
| type pthread_mutex_t is limited private; |
| type pthread_cond_t is limited private; |
| type pthread_attr_t is limited private; |
| type pthread_mutexattr_t is limited private; |
| type pthread_condattr_t is limited private; |
| type pthread_key_t is private; |
| |
| PTHREAD_CREATE_DETACHED : constant := 1; |
| |
| ----------- |
| -- Stack -- |
| ----------- |
| |
| function Get_Stack_Base (thread : pthread_t) return Address; |
| pragma Inline (Get_Stack_Base); |
| -- This is a dummy procedure to share some GNULLI files |
| |
| --------------------------------------- |
| -- Nonstandard Thread Initialization -- |
| --------------------------------------- |
| |
| procedure pthread_init; |
| pragma Inline (pthread_init); |
| -- This is a dummy procedure to share some GNULLI files |
| |
| ------------------------- |
| -- POSIX.1c Section 3 -- |
| ------------------------- |
| |
| function sigwait (set : access sigset_t; sig : access Signal) return int; |
| pragma Import (C, sigwait, "sigwait"); |
| |
| function pthread_kill (thread : pthread_t; sig : Signal) return int; |
| pragma Import (C, pthread_kill, "pthread_kill"); |
| |
| function pthread_sigmask |
| (how : int; |
| set : access sigset_t; |
| oset : access sigset_t) return int; |
| pragma Import (C, pthread_sigmask, "pthread_sigmask"); |
| |
| -------------------------- |
| -- POSIX.1c Section 11 -- |
| -------------------------- |
| |
| function pthread_mutexattr_init |
| (attr : access pthread_mutexattr_t) return int; |
| pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init"); |
| |
| function pthread_mutexattr_destroy |
| (attr : access pthread_mutexattr_t) return int; |
| pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy"); |
| |
| function pthread_mutex_init |
| (mutex : access pthread_mutex_t; |
| attr : access pthread_mutexattr_t) return int; |
| pragma Import (C, pthread_mutex_init, "pthread_mutex_init"); |
| |
| function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int; |
| pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy"); |
| |
| function pthread_mutex_lock (mutex : access pthread_mutex_t) return int; |
| pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock"); |
| |
| function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int; |
| pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock"); |
| |
| function pthread_condattr_init |
| (attr : access pthread_condattr_t) return int; |
| pragma Import (C, pthread_condattr_init, "pthread_condattr_init"); |
| |
| function pthread_condattr_destroy |
| (attr : access pthread_condattr_t) return int; |
| pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy"); |
| |
| function pthread_cond_init |
| (cond : access pthread_cond_t; |
| attr : access pthread_condattr_t) return int; |
| pragma Import (C, pthread_cond_init, "pthread_cond_init"); |
| |
| function pthread_cond_destroy (cond : access pthread_cond_t) return int; |
| pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy"); |
| |
| function pthread_cond_signal (cond : access pthread_cond_t) return int; |
| pragma Import (C, pthread_cond_signal, "pthread_cond_signal"); |
| |
| function pthread_cond_wait |
| (cond : access pthread_cond_t; |
| mutex : access pthread_mutex_t) return int; |
| pragma Import (C, pthread_cond_wait, "pthread_cond_wait"); |
| |
| function pthread_cond_timedwait |
| (cond : access pthread_cond_t; |
| mutex : access pthread_mutex_t; |
| abstime : access timespec) return int; |
| pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait"); |
| |
| -------------------------- |
| -- POSIX.1c Section 13 -- |
| -------------------------- |
| |
| type struct_sched_param is record |
| sched_priority : int; -- scheduling priority |
| end record; |
| pragma Convention (C, struct_sched_param); |
| |
| function pthread_setschedparam |
| (thread : pthread_t; |
| policy : int; |
| param : access struct_sched_param) return int; |
| pragma Import (C, pthread_setschedparam, "pthread_setschedparam"); |
| |
| function pthread_attr_setschedpolicy |
| (attr : access pthread_attr_t; |
| policy : int) return int; |
| pragma Import |
| (C, pthread_attr_setschedpolicy, "pthread_attr_setschedpolicy"); |
| |
| function sched_yield return int; |
| pragma Import (C, sched_yield, "sched_yield"); |
| |
| --------------------------- |
| -- P1003.1c - Section 16 -- |
| --------------------------- |
| |
| function pthread_attr_init |
| (attributes : access pthread_attr_t) return int; |
| pragma Import (C, pthread_attr_init, "pthread_attr_init"); |
| |
| function pthread_attr_destroy |
| (attributes : access pthread_attr_t) return int; |
| pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy"); |
| |
| function pthread_attr_setdetachstate |
| (attr : access pthread_attr_t; |
| detachstate : int) return int; |
| pragma Import |
| (C, pthread_attr_setdetachstate, "pthread_attr_setdetachstate"); |
| |
| function pthread_attr_setstacksize |
| (attr : access pthread_attr_t; |
| stacksize : size_t) return int; |
| pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize"); |
| |
| function pthread_create |
| (thread : access pthread_t; |
| attributes : access pthread_attr_t; |
| start_routine : Thread_Body; |
| arg : System.Address) return int; |
| pragma Import (C, pthread_create, "pthread_create"); |
| |
| procedure pthread_exit (status : System.Address); |
| pragma Import (C, pthread_exit, "pthread_exit"); |
| |
| function pthread_self return pthread_t; |
| pragma Import (C, pthread_self, "pthread_self"); |
| |
| -------------------------- |
| -- POSIX.1c Section 17 -- |
| -------------------------- |
| |
| function pthread_setspecific |
| (key : pthread_key_t; |
| value : System.Address) return int; |
| pragma Import (C, pthread_setspecific, "pthread_setspecific"); |
| |
| function pthread_getspecific (key : pthread_key_t) return System.Address; |
| pragma Import (C, pthread_getspecific, "pthread_getspecific"); |
| |
| type destructor_pointer is access procedure (arg : System.Address); |
| |
| function pthread_key_create |
| (key : access pthread_key_t; |
| destructor : destructor_pointer) return int; |
| pragma Import (C, pthread_key_create, "pthread_key_create"); |
| |
| private |
| |
| type sigset_t is array (0 .. 31) of unsigned_long; |
| pragma Convention (C, sigset_t); |
| |
| type pid_t is new int; |
| |
| type time_t is new long; |
| |
| type timespec is record |
| tv_sec : time_t; |
| tv_nsec : long; |
| end record; |
| pragma Convention (C, timespec); |
| |
| type struct_timeval is record |
| tv_sec : time_t; |
| tv_usec : time_t; |
| end record; |
| pragma Convention (C, struct_timeval); |
| |
| type pthread_attr_t is record |
| detachstate : int; |
| schedpolicy : int; |
| schedparam : struct_sched_param; |
| inheritsched : int; |
| scope : int; |
| guardsize : size_t; |
| stackaddr_set : int; |
| stackaddr : System.Address; |
| stacksize : size_t; |
| end record; |
| pragma Convention (C, pthread_attr_t); |
| |
| type pthread_condattr_t is record |
| dummy : int; |
| end record; |
| pragma Convention (C, pthread_condattr_t); |
| |
| type pthread_mutexattr_t is record |
| mutexkind : int; |
| end record; |
| pragma Convention (C, pthread_mutexattr_t); |
| |
| type lock_array is array (1 .. 4) of int; |
| type atomic_lock_t is record |
| lock : lock_array; |
| end record; |
| pragma Convention (C, atomic_lock_t); |
| -- ??? Alignment should be 16 but this is larger than BIGGEST_ALIGNMENT. |
| -- This causes an erroneous pointer value to sometimes be passed to free |
| -- during deallocation. See PR ada/24533 for more details. |
| for atomic_lock_t'Alignment use 8; |
| |
| type struct_pthread_fast_lock is record |
| spinlock : atomic_lock_t; |
| status : long; |
| end record; |
| pragma Convention (C, struct_pthread_fast_lock); |
| |
| type pthread_mutex_t is record |
| m_reserved : int; |
| m_count : int; |
| m_owner : System.Address; |
| m_kind : int; |
| m_lock : struct_pthread_fast_lock; |
| end record; |
| pragma Convention (C, pthread_mutex_t); |
| |
| type pthread_cond_t is array (0 .. 47) of unsigned_char; |
| pragma Convention (C, pthread_cond_t); |
| |
| type pthread_key_t is new unsigned; |
| |
| end System.OS_Interface; |
