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-------------------------------------------------------------------------------
--- --
--- GNAT 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 --
--- --
--- Copyright (C) 1991-1994, Florida State University --
--- Copyright (C) 1995-2011, Free Software Foundation, Inc. --
--- --
--- GNAT 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 3, or (at your option) any later ver- --
--- sion. GNAT 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. --
--- --
--- As a special exception under Section 7 of GPL version 3, you are granted --
--- additional permissions described in the GCC Runtime Library Exception, --
--- version 3.1, as published by the Free Software Foundation. --
--- --
--- You should have received a copy of the GNU General Public License and --
--- a copy of the GCC Runtime Library Exception along with this program; --
--- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
--- <http://www.gnu.org/licenses/>. --
--- --
--- GNARL was developed by the GNARL team at Florida State University. --
--- Extensive contributions were provided by Ada Core Technologies, Inc. --
--- --
-------------------------------------------------------------------------------
-
--- This is Darwin pthreads version of this package
-
--- This package includes all direct interfaces to OS services that are needed
--- by the tasking run-time (libgnarl).
-
--- PLEASE DO NOT add any with-clauses to this package or remove the pragma
--- Elaborate_Body. It is designed to be a bottom-level (leaf) package.
-
-with Interfaces.C;
-with System.OS_Constants;
-
-package System.OS_Interface is
- pragma Preelaborate;
-
- subtype int is Interfaces.C.int;
- 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");
-
- EINTR : constant := 4;
- ENOMEM : constant := 12;
- EINVAL : constant := 22;
- EAGAIN : constant := 35;
- ETIMEDOUT : constant := 60;
-
- -------------
- -- Signals --
- -------------
-
- Max_Interrupt : constant := 31;
- 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 instruction
- 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 argument to 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
- SIGURG : constant := 16; -- urgent condition on IO channel
- SIGSTOP : constant := 17; -- stop (cannot be caught or ignored)
- SIGTSTP : constant := 18; -- user stop requested from tty
- SIGCONT : constant := 19; -- stopped process has been continued
- SIGCHLD : constant := 20; -- child status change
- SIGTTIN : constant := 21; -- background tty read attempted
- SIGTTOU : constant := 22; -- background tty write attempted
- SIGIO : constant := 23; -- I/O possible (Solaris SIGPOLL alias)
- SIGXCPU : constant := 24; -- CPU time limit exceeded
- SIGXFSZ : constant := 25; -- filesize limit exceeded
- SIGVTALRM : constant := 26; -- virtual timer expired
- SIGPROF : constant := 27; -- profiling timer expired
- SIGWINCH : constant := 28; -- window size change
- SIGINFO : constant := 29; -- information request
- SIGUSR1 : constant := 30; -- user defined signal 1
- SIGUSR2 : constant := 31; -- user defined signal 2
-
- 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 :=
- (SIGTTIN, SIGTTOU, SIGSTOP, SIGTSTP);
-
- Reserved : constant Signal_Set :=
- (SIGKILL, SIGSTOP);
-
- Exception_Signals : constant Signal_Set :=
- (SIGFPE, SIGILL, SIGSEGV, SIGBUS);
- -- These signals (when runtime or system) will be caught and converted
- -- into an Ada exception.
-
- 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 siginfo_t is private;
- type ucontext_t is private;
-
- type Signal_Handler is access procedure
- (signo : Signal;
- info : access siginfo_t;
- context : access ucontext_t);
-
- type struct_sigaction is record
- sa_handler : System.Address;
- sa_mask : sigset_t;
- sa_flags : int;
- end record;
- pragma Convention (C, struct_sigaction);
- type struct_sigaction_ptr is access all struct_sigaction;
-
- SIG_BLOCK : constant := 1;
- SIG_UNBLOCK : constant := 2;
- SIG_SETMASK : constant := 3;
-
- SIG_DFL : constant := 0;
- SIG_IGN : constant := 1;
-
- SA_SIGINFO : constant := 16#0040#;
- SA_ONSTACK : constant := 16#0001#;
-
- function sigaction
- (sig : Signal;
- act : struct_sigaction_ptr;
- oact : struct_sigaction_ptr) return int;
- pragma Import (C, sigaction, "sigaction");
-
- ----------
- -- Time --
- ----------
-
- Time_Slice_Supported : constant Boolean := True;
- -- Indicates whether time slicing is supported
-
- type timespec is private;
-
- type clockid_t is new int;
-
- function clock_gettime
- (clock_id : clockid_t;
- tp : access timespec) return int;
-
- function To_Duration (TS : timespec) return Duration;
- pragma Inline (To_Duration);
-
- function To_Timespec (D : Duration) return timespec;
- pragma Inline (To_Timespec);
-
- -------------------------
- -- Priority Scheduling --
- -------------------------
-
- SCHED_OTHER : constant := 1;
- SCHED_RR : constant := 2;
- SCHED_FIFO : constant := 4;
-
- function To_Target_Priority
- (Prio : System.Any_Priority) return Interfaces.C.int;
- -- Maps System.Any_Priority to a POSIX priority
-
- -------------
- -- 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");
-
- ---------
- -- LWP --
- ---------
-
- function lwp_self return System.Address;
- -- Return the mach thread bound to the current thread. The value is not
- -- used by the run-time library but made available to debuggers.
-
- -------------
- -- Threads --
- -------------
-
- type Thread_Body is access
- function (arg : System.Address) return System.Address;
- pragma Convention (C, Thread_Body);
-
- type pthread_t is private;
- subtype Thread_Id is 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;
-
- type pthread_mutex_ptr is access all pthread_mutex_t;
- type pthread_cond_ptr is access all pthread_cond_t;
-
- PTHREAD_CREATE_DETACHED : constant := 2;
-
- PTHREAD_SCOPE_PROCESS : constant := 2;
- PTHREAD_SCOPE_SYSTEM : constant := 1;
-
- -- Read/Write lock not supported on Darwin. To add support both types
- -- pthread_rwlock_t and pthread_rwlockattr_t must properly be defined
- -- with the associated routines pthread_rwlock_[init/destroy] and
- -- pthread_rwlock_[rdlock/wrlock/unlock].
-
- subtype pthread_rwlock_t is pthread_mutex_t;
- subtype pthread_rwlockattr_t is pthread_mutexattr_t;
-
- -----------
- -- Stack --
- -----------
-
- type stack_t is record
- ss_sp : System.Address;
- ss_size : size_t;
- ss_flags : int;
- end record;
- pragma Convention (C, stack_t);
-
- function sigaltstack
- (ss : not null access stack_t;
- oss : access stack_t) return int;
- pragma Import (C, sigaltstack, "sigaltstack");
-
- Alternate_Stack : aliased System.Address;
- pragma Import (C, Alternate_Stack, "__gnat_alternate_stack");
- -- The alternate signal stack for stack overflows
-
- Alternate_Stack_Size : constant := 32 * 1024;
- -- This must be in keeping with init.c:__gnat_alternate_stack
-
- Stack_Base_Available : constant Boolean := False;
- -- Indicates whether the stack base is available on this target. This
- -- allows us to share s-osinte.adb between all the FSU run time. Note that
- -- this value can only be true if pthread_t has a complete definition that
- -- corresponds exactly to the C header files.
-
- function Get_Stack_Base (thread : pthread_t) return System.Address;
- pragma Inline (Get_Stack_Base);
- -- returns the stack base of the specified thread. Only call this function
- -- when Stack_Base_Available is True.
-
- function Get_Page_Size return size_t;
- function Get_Page_Size return System.Address;
- pragma Import (C, Get_Page_Size, "getpagesize");
- -- Returns the size of a page
-
- PROT_NONE : constant := 0;
- PROT_READ : constant := 1;
- PROT_WRITE : constant := 2;
- PROT_EXEC : constant := 4;
- PROT_ALL : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
-
- PROT_ON : constant := PROT_NONE;
- PROT_OFF : constant := PROT_ALL;
-
- function mprotect
- (addr : System.Address;
- len : size_t;
- prot : int) return int;
- pragma Import (C, mprotect);
-
- ---------------------------------------
- -- Nonstandard Thread Initialization --
- ---------------------------------------
-
- procedure pthread_init;
-
- -------------------------
- -- 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");
-
- Relative_Timed_Wait : constant Boolean := False;
- -- pthread_cond_timedwait requires an absolute delay time
-
- --------------------------
- -- POSIX.1c Section 13 --
- --------------------------
-
- PTHREAD_PRIO_NONE : constant := 0;
- PTHREAD_PRIO_INHERIT : constant := 1;
- PTHREAD_PRIO_PROTECT : constant := 2;
-
- function pthread_mutexattr_setprotocol
- (attr : access pthread_mutexattr_t;
- protocol : int) return int;
- pragma Import
- (C, pthread_mutexattr_setprotocol, "pthread_mutexattr_setprotocol");
-
- function pthread_mutexattr_setprioceiling
- (attr : access pthread_mutexattr_t;
- prioceiling : int) return int;
- pragma Import
- (C, pthread_mutexattr_setprioceiling,
- "pthread_mutexattr_setprioceiling");
-
- type padding is array (int range <>) of Interfaces.C.char;
-
- type struct_sched_param is record
- sched_priority : int; -- scheduling priority
- opaque : padding (1 .. 4);
- 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_setscope
- (attr : access pthread_attr_t;
- contentionscope : int) return int;
- pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
-
- function pthread_attr_setinheritsched
- (attr : access pthread_attr_t;
- inheritsched : int) return int;
- pragma Import
- (C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched");
-
- function pthread_attr_setschedpolicy
- (attr : access pthread_attr_t;
- policy : int) return int;
- pragma Import (C, pthread_attr_setschedpolicy, "pthread_attr_setsched");
-
- function sched_yield return int;
-
- ---------------------------
- -- 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);
- pragma Convention (C, destructor_pointer);
-
- 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 new unsigned;
-
- type int32_t is new int;
-
- type pid_t is new int32_t;
-
- type time_t is new long;
-
- type timespec is record
- tv_sec : time_t;
- tv_nsec : long;
- end record;
- pragma Convention (C, timespec);
-
- --
- -- Darwin specific signal implementation
- --
- type Pad_Type is array (1 .. 7) of unsigned_long;
- type siginfo_t is record
- si_signo : int; -- signal number
- si_errno : int; -- errno association
- si_code : int; -- signal code
- si_pid : int; -- sending process
- si_uid : unsigned; -- sender's ruid
- si_status : int; -- exit value
- si_addr : System.Address; -- faulting instruction
- si_value : System.Address; -- signal value
- si_band : long; -- band event for SIGPOLL
- pad : Pad_Type; -- RFU
- end record;
- pragma Convention (C, siginfo_t);
-
- type mcontext_t is new System.Address;
-
- type ucontext_t is record
- uc_onstack : int;
- uc_sigmask : sigset_t; -- Signal Mask Used By This Context
- uc_stack : stack_t; -- Stack Used By This Context
- uc_link : System.Address; -- Pointer To Resuming Context
- uc_mcsize : size_t; -- Size of The Machine Context
- uc_mcontext : mcontext_t; -- Machine Specific Context
- end record;
- pragma Convention (C, ucontext_t);
-
- --
- -- Darwin specific pthread implementation
- --
- type pthread_t is new System.Address;
-
- type pthread_attr_t is record
- sig : long;
- opaque : padding (1 .. System.OS_Constants.PTHREAD_ATTR_SIZE);
- end record;
- pragma Convention (C, pthread_attr_t);
-
- type pthread_mutexattr_t is record
- sig : long;
- opaque : padding (1 .. System.OS_Constants.PTHREAD_MUTEXATTR_SIZE);
- end record;
- pragma Convention (C, pthread_mutexattr_t);
-
- type pthread_mutex_t is record
- sig : long;
- opaque : padding (1 .. System.OS_Constants.PTHREAD_MUTEX_SIZE);
- end record;
- pragma Convention (C, pthread_mutex_t);
-
- type pthread_condattr_t is record
- sig : long;
- opaque : padding (1 .. System.OS_Constants.PTHREAD_CONDATTR_SIZE);
- end record;
- pragma Convention (C, pthread_condattr_t);
-
- type pthread_cond_t is record
- sig : long;
- opaque : padding (1 .. System.OS_Constants.PTHREAD_COND_SIZE);
- end record;
- pragma Convention (C, pthread_cond_t);
-
- type pthread_once_t is record
- sig : long;
- opaque : padding (1 .. System.OS_Constants.PTHREAD_ONCE_SIZE);
- end record;
- pragma Convention (C, pthread_once_t);
-
- type pthread_key_t is new unsigned_long;
-
-end System.OS_Interface;