mirror of https://github.com/python/cpython
Split thread.c into a number of system-specific files.
Added Tim Peters' pthread version.
This commit is contained in:
Guido van Rossum
parent
b9c4461a35
commit
2c8cb9f3d2
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@ -0,0 +1,158 @@
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/***********************************************************
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Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
|
||||
Amsterdam, The Netherlands.
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||||
|
||||
All Rights Reserved
|
||||
|
||||
Permission to use, copy, modify, and distribute this software and its
|
||||
documentation for any purpose and without fee is hereby granted,
|
||||
provided that the above copyright notice appear in all copies and that
|
||||
both that copyright notice and this permission notice appear in
|
||||
supporting documentation, and that the names of Stichting Mathematisch
|
||||
Centrum or CWI not be used in advertising or publicity pertaining to
|
||||
distribution of the software without specific, written prior permission.
|
||||
|
||||
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
||||
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
|
||||
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||||
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
||||
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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||||
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******************************************************************/
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#include <cthreads.h>
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/*
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* Initialization.
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*/
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static void _init_thread _P0()
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{
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cthread_init();
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}
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/*
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* Thread support.
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*/
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int start_new_thread _P2(func, void (*func) _P((void *)), arg, void *arg)
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{
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#if defined(SGI_THREADS) && defined(USE_DL)
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long addr, size;
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static int local_initialized = 0;
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#endif /* SGI_THREADS and USE_DL */
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int success = 0; /* init not needed when SOLARIS_THREADS and */
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/* C_THREADS implemented properly */
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dprintf(("start_new_thread called\n"));
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if (!initialized)
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init_thread();
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(void) cthread_fork(func, arg);
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return success < 0 ? 0 : 1;
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}
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static void do_exit_thread _P1(no_cleanup, int no_cleanup)
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{
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dprintf(("exit_thread called\n"));
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if (!initialized)
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if (no_cleanup)
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_exit(0);
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else
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exit(0);
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cthread_exit(0);
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}
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void exit_thread _P0()
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{
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do_exit_thread(0);
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}
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void _exit_thread _P0()
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{
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do_exit_thread(1);
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}
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#ifndef NO_EXIT_PROG
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static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup)
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{
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dprintf(("exit_prog(%d) called\n", status));
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if (!initialized)
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if (no_cleanup)
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_exit(status);
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else
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exit(status);
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}
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void exit_prog _P1(status, int status)
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{
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do_exit_prog(status, 0);
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}
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void _exit_prog _P1(status, int status)
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{
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do_exit_prog(status, 1);
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}
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#endif /* NO_EXIT_PROG */
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/*
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* Lock support.
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*/
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type_lock allocate_lock _P0()
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{
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dprintf(("allocate_lock called\n"));
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if (!initialized)
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init_thread();
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dprintf(("allocate_lock() -> %lx\n", (long)lock));
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return (type_lock) lock;
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}
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void free_lock _P1(lock, type_lock lock)
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{
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dprintf(("free_lock(%lx) called\n", (long)lock));
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}
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int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag)
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{
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int success;
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dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
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dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
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return success;
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}
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void release_lock _P1(lock, type_lock lock)
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{
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dprintf(("release_lock(%lx) called\n", (long)lock));
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}
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/*
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* Semaphore support.
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*/
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type_sema allocate_sema _P1(value, int value)
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{
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dprintf(("allocate_sema called\n"));
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if (!initialized)
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init_thread();
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dprintf(("allocate_sema() -> %lx\n", (long) sema));
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return (type_sema) sema;
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}
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void free_sema _P1(sema, type_sema sema)
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{
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dprintf(("free_sema(%lx) called\n", (long) sema));
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}
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void down_sema _P1(sema, type_sema sema)
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{
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dprintf(("down_sema(%lx) called\n", (long) sema));
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dprintf(("down_sema(%lx) return\n", (long) sema));
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}
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void up_sema _P1(sema, type_sema sema)
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{
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dprintf(("up_sema(%lx)\n", (long) sema));
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}
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@ -0,0 +1,148 @@
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/***********************************************************
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Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
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||||
Amsterdam, The Netherlands.
|
||||
|
||||
All Rights Reserved
|
||||
|
||||
Permission to use, copy, modify, and distribute this software and its
|
||||
documentation for any purpose and without fee is hereby granted,
|
||||
provided that the above copyright notice appear in all copies and that
|
||||
both that copyright notice and this permission notice appear in
|
||||
supporting documentation, and that the names of Stichting Mathematisch
|
||||
Centrum or CWI not be used in advertising or publicity pertaining to
|
||||
distribution of the software without specific, written prior permission.
|
||||
|
||||
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
||||
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
|
||||
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||||
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
||||
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
|
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******************************************************************/
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/*
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* Initialization.
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*/
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static void _init_thread _P0()
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{
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}
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/*
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* Thread support.
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*/
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int start_new_thread _P2(func, void (*func) _P((void *)), arg, void *arg)
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{
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int success = 0; /* init not needed when SOLARIS_THREADS and */
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/* C_THREADS implemented properly */
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dprintf(("start_new_thread called\n"));
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if (!initialized)
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init_thread();
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return success < 0 ? 0 : 1;
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}
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static void do_exit_thread _P1(no_cleanup, int no_cleanup)
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{
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dprintf(("exit_thread called\n"));
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if (!initialized)
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if (no_cleanup)
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_exit(0);
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else
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exit(0);
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}
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void exit_thread _P0()
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{
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do_exit_thread(0);
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}
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void _exit_thread _P0()
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{
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do_exit_thread(1);
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}
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#ifndef NO_EXIT_PROG
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static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup)
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{
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dprintf(("exit_prog(%d) called\n", status));
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if (!initialized)
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if (no_cleanup)
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_exit(status);
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else
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exit(status);
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}
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void exit_prog _P1(status, int status)
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{
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do_exit_prog(status, 0);
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}
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void _exit_prog _P1(status, int status)
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{
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do_exit_prog(status, 1);
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}
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#endif /* NO_EXIT_PROG */
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/*
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* Lock support.
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*/
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type_lock allocate_lock _P0()
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{
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dprintf(("allocate_lock called\n"));
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if (!initialized)
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init_thread();
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dprintf(("allocate_lock() -> %lx\n", (long)lock));
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return (type_lock) lock;
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}
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void free_lock _P1(lock, type_lock lock)
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{
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dprintf(("free_lock(%lx) called\n", (long)lock));
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}
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int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag)
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{
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int success;
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dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
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dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
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return success;
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}
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void release_lock _P1(lock, type_lock lock)
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{
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dprintf(("release_lock(%lx) called\n", (long)lock));
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}
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/*
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* Semaphore support.
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*/
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type_sema allocate_sema _P1(value, int value)
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{
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dprintf(("allocate_sema called\n"));
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if (!initialized)
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init_thread();
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dprintf(("allocate_sema() -> %lx\n", (long) sema));
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return (type_sema) sema;
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}
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void free_sema _P1(sema, type_sema sema)
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{
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dprintf(("free_sema(%lx) called\n", (long) sema));
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}
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void down_sema _P1(sema, type_sema sema)
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{
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dprintf(("down_sema(%lx) called\n", (long) sema));
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dprintf(("down_sema(%lx) return\n", (long) sema));
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}
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void up_sema _P1(sema, type_sema sema)
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{
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dprintf(("up_sema(%lx)\n", (long) sema));
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}
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@ -0,0 +1,198 @@
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/***********************************************************
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Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
|
||||
Amsterdam, The Netherlands.
|
||||
|
||||
All Rights Reserved
|
||||
|
||||
Permission to use, copy, modify, and distribute this software and its
|
||||
documentation for any purpose and without fee is hereby granted,
|
||||
provided that the above copyright notice appear in all copies and that
|
||||
both that copyright notice and this permission notice appear in
|
||||
supporting documentation, and that the names of Stichting Mathematisch
|
||||
Centrum or CWI not be used in advertising or publicity pertaining to
|
||||
distribution of the software without specific, written prior permission.
|
||||
|
||||
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
||||
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
|
||||
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||||
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
||||
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
|
||||
******************************************************************/
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||||
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||||
#include <stdlib.h>
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#include <lwp/lwp.h>
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#include <lwp/stackdep.h>
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#define STACKSIZE 1000 /* stacksize for a thread */
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#define NSTACKS 2 /* # stacks to be put in cache initialy */
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struct lock {
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int lock_locked;
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cv_t lock_condvar;
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mon_t lock_monitor;
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};
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|
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/*
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* Initialization.
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*/
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static void _init_thread _P0()
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{
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lwp_setstkcache(STACKSIZE, NSTACKS);
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}
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|
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/*
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* Thread support.
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*/
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int start_new_thread _P2(func, void (*func) _P((void *)), arg, void *arg)
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{
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thread_t tid;
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#if defined(SGI_THREADS) && defined(USE_DL)
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long addr, size;
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static int local_initialized = 0;
|
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#endif /* SGI_THREADS and USE_DL */
|
||||
int success = 0; /* init not needed when SOLARIS_THREADS and */
|
||||
/* C_THREADS implemented properly */
|
||||
|
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dprintf(("start_new_thread called\n"));
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if (!initialized)
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init_thread();
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success = lwp_create(&tid, func, MINPRIO, 0, lwp_newstk(), 1, arg);
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return success < 0 ? 0 : 1;
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}
|
||||
|
||||
static void do_exit_thread _P1(no_cleanup, int no_cleanup)
|
||||
{
|
||||
dprintf(("exit_thread called\n"));
|
||||
if (!initialized)
|
||||
if (no_cleanup)
|
||||
_exit(0);
|
||||
else
|
||||
exit(0);
|
||||
lwp_destroy(SELF);
|
||||
}
|
||||
|
||||
void exit_thread _P0()
|
||||
{
|
||||
do_exit_thread(0);
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||||
}
|
||||
|
||||
void _exit_thread _P0()
|
||||
{
|
||||
do_exit_thread(1);
|
||||
}
|
||||
|
||||
#ifndef NO_EXIT_PROG
|
||||
static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup)
|
||||
{
|
||||
dprintf(("exit_prog(%d) called\n", status));
|
||||
if (!initialized)
|
||||
if (no_cleanup)
|
||||
_exit(status);
|
||||
else
|
||||
exit(status);
|
||||
pod_exit(status);
|
||||
}
|
||||
|
||||
void exit_prog _P1(status, int status)
|
||||
{
|
||||
do_exit_prog(status, 0);
|
||||
}
|
||||
|
||||
void _exit_prog _P1(status, int status)
|
||||
{
|
||||
do_exit_prog(status, 1);
|
||||
}
|
||||
#endif /* NO_EXIT_PROG */
|
||||
|
||||
/*
|
||||
* Lock support.
|
||||
*/
|
||||
type_lock allocate_lock _P0()
|
||||
{
|
||||
struct lock *lock;
|
||||
extern char *malloc();
|
||||
|
||||
dprintf(("allocate_lock called\n"));
|
||||
if (!initialized)
|
||||
init_thread();
|
||||
|
||||
lock = (struct lock *) malloc(sizeof(struct lock));
|
||||
lock->lock_locked = 0;
|
||||
(void) mon_create(&lock->lock_monitor);
|
||||
(void) cv_create(&lock->lock_condvar, lock->lock_monitor);
|
||||
dprintf(("allocate_lock() -> %lx\n", (long)lock));
|
||||
return (type_lock) lock;
|
||||
}
|
||||
|
||||
void free_lock _P1(lock, type_lock lock)
|
||||
{
|
||||
dprintf(("free_lock(%lx) called\n", (long)lock));
|
||||
mon_destroy(((struct lock *) lock)->lock_monitor);
|
||||
free((char *) lock);
|
||||
}
|
||||
|
||||
int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag)
|
||||
{
|
||||
int success;
|
||||
|
||||
dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
|
||||
success = 0;
|
||||
|
||||
(void) mon_enter(((struct lock *) lock)->lock_monitor);
|
||||
if (waitflag)
|
||||
while (((struct lock *) lock)->lock_locked)
|
||||
cv_wait(((struct lock *) lock)->lock_condvar);
|
||||
if (!((struct lock *) lock)->lock_locked) {
|
||||
success = 1;
|
||||
((struct lock *) lock)->lock_locked = 1;
|
||||
}
|
||||
cv_broadcast(((struct lock *) lock)->lock_condvar);
|
||||
mon_exit(((struct lock *) lock)->lock_monitor);
|
||||
dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
|
||||
return success;
|
||||
}
|
||||
|
||||
void release_lock _P1(lock, type_lock lock)
|
||||
{
|
||||
dprintf(("release_lock(%lx) called\n", (long)lock));
|
||||
(void) mon_enter(((struct lock *) lock)->lock_monitor);
|
||||
((struct lock *) lock)->lock_locked = 0;
|
||||
cv_broadcast(((struct lock *) lock)->lock_condvar);
|
||||
mon_exit(((struct lock *) lock)->lock_monitor);
|
||||
}
|
||||
|
||||
/*
|
||||
* Semaphore support.
|
||||
*/
|
||||
type_sema allocate_sema _P1(value, int value)
|
||||
{
|
||||
type_sema sema = 0;
|
||||
dprintf(("allocate_sema called\n"));
|
||||
if (!initialized)
|
||||
init_thread();
|
||||
|
||||
dprintf(("allocate_sema() -> %lx\n", (long) sema));
|
||||
return (type_sema) sema;
|
||||
}
|
||||
|
||||
void free_sema _P1(sema, type_sema sema)
|
||||
{
|
||||
dprintf(("free_sema(%lx) called\n", (long) sema));
|
||||
}
|
||||
|
||||
void down_sema _P1(sema, type_sema sema)
|
||||
{
|
||||
dprintf(("down_sema(%lx) called\n", (long) sema));
|
||||
dprintf(("down_sema(%lx) return\n", (long) sema));
|
||||
}
|
||||
|
||||
void up_sema _P1(sema, type_sema sema)
|
||||
{
|
||||
dprintf(("up_sema(%lx)\n", (long) sema));
|
||||
}
|
||||
|
|
@ -0,0 +1,272 @@
|
|||
/***********************************************************
|
||||
Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
|
||||
Amsterdam, The Netherlands.
|
||||
|
||||
All Rights Reserved
|
||||
|
||||
Permission to use, copy, modify, and distribute this software and its
|
||||
documentation for any purpose and without fee is hereby granted,
|
||||
provided that the above copyright notice appear in all copies and that
|
||||
both that copyright notice and this permission notice appear in
|
||||
supporting documentation, and that the names of Stichting Mathematisch
|
||||
Centrum or CWI not be used in advertising or publicity pertaining to
|
||||
distribution of the software without specific, written prior permission.
|
||||
|
||||
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
||||
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
|
||||
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||||
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
||||
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
|
||||
******************************************************************/
|
||||
|
||||
#ifdef sun
|
||||
#define FLORIDA_HACKS
|
||||
#endif
|
||||
|
||||
#ifdef FLORIDA_HACKS
|
||||
/* Hacks for Florida State Posix threads implementation */
|
||||
#undef _POSIX_THREADS
|
||||
#include "/ufs/guido/src/python/Contrib/pthreads/pthreads/pthread.h"
|
||||
#define pthread_attr_default ((pthread_attr_t *)0)
|
||||
#define pthread_mutexattr_default ((pthread_mutexattr_t *)0)
|
||||
#define pthread_condattr_default ((pthread_condattr_t *)0)
|
||||
#define TRYLOCK_OFFSET 1
|
||||
#else /* !FLORIDA_HACKS */
|
||||
#include <pthread.h>
|
||||
#define TRYLOCK_OFFSET 0
|
||||
#endif /* FLORIDA_HACKS */
|
||||
#include <stdlib.h>
|
||||
|
||||
/* A pthread mutex isn't sufficient to model the Python lock type (at
|
||||
* least not the way KSR did 'em -- haven't dug thru the docs to verify),
|
||||
* because a thread that locks a mutex can't then do a pthread_mutex_lock
|
||||
* on it (to wait for another thread to unlock it).
|
||||
* In any case, pthread mutexes are designed for serializing threads over
|
||||
* short pieces of code, so wouldn't be an appropriate implementation of
|
||||
* Python's locks regardless.
|
||||
* The pthread_lock struct below implements a Python lock as a pthread
|
||||
* mutex and a <condition, mutex> pair. In general, if the mutex can be
|
||||
* be acquired instantly, it is, else the pair is used to block the
|
||||
* thread until the mutex is released. 7 May 1994 tim@ksr.com
|
||||
*/
|
||||
typedef struct {
|
||||
/* the lock */
|
||||
pthread_mutex_t mutex;
|
||||
/* a <cond, mutex> pair to handle an acquire of a locked mutex */
|
||||
pthread_cond_t cond;
|
||||
pthread_mutex_t cmutex;
|
||||
} pthread_lock;
|
||||
|
||||
/*
|
||||
* Initialization.
|
||||
*/
|
||||
static void _init_thread _P0()
|
||||
{
|
||||
}
|
||||
|
||||
/*
|
||||
* Thread support.
|
||||
*/
|
||||
int start_new_thread _P2(func, void (*func) _P((void *)), arg, void *arg)
|
||||
{
|
||||
#if defined(SGI_THREADS) && defined(USE_DL)
|
||||
long addr, size;
|
||||
static int local_initialized = 0;
|
||||
#endif /* SGI_THREADS and USE_DL */
|
||||
pthread_t th;
|
||||
int success = 0; /* init not needed when SOLARIS_THREADS and */
|
||||
/* C_THREADS implemented properly */
|
||||
|
||||
dprintf(("start_new_thread called\n"));
|
||||
if (!initialized)
|
||||
init_thread();
|
||||
success = pthread_create(&th, pthread_attr_default, func, arg);
|
||||
return success < 0 ? 0 : 1;
|
||||
}
|
||||
|
||||
static void do_exit_thread _P1(no_cleanup, int no_cleanup)
|
||||
{
|
||||
dprintf(("exit_thread called\n"));
|
||||
if (!initialized)
|
||||
if (no_cleanup)
|
||||
_exit(0);
|
||||
else
|
||||
exit(0);
|
||||
}
|
||||
|
||||
void exit_thread _P0()
|
||||
{
|
||||
do_exit_thread(0);
|
||||
}
|
||||
|
||||
void _exit_thread _P0()
|
||||
{
|
||||
do_exit_thread(1);
|
||||
}
|
||||
|
||||
#ifndef NO_EXIT_PROG
|
||||
static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup)
|
||||
{
|
||||
dprintf(("exit_prog(%d) called\n", status));
|
||||
if (!initialized)
|
||||
if (no_cleanup)
|
||||
_exit(status);
|
||||
else
|
||||
exit(status);
|
||||
}
|
||||
|
||||
void exit_prog _P1(status, int status)
|
||||
{
|
||||
do_exit_prog(status, 0);
|
||||
}
|
||||
|
||||
void _exit_prog _P1(status, int status)
|
||||
{
|
||||
do_exit_prog(status, 1);
|
||||
}
|
||||
#endif /* NO_EXIT_PROG */
|
||||
|
||||
/*
|
||||
* Lock support.
|
||||
*/
|
||||
type_lock allocate_lock _P0()
|
||||
{
|
||||
pthread_lock *lock;
|
||||
|
||||
dprintf(("allocate_lock called\n"));
|
||||
if (!initialized)
|
||||
init_thread();
|
||||
|
||||
lock = (pthread_lock *) malloc(sizeof(pthread_lock));
|
||||
{
|
||||
int err = 0;
|
||||
if ( pthread_mutex_init(&lock->mutex,
|
||||
pthread_mutexattr_default) ) {
|
||||
perror("pthread_mutex_init");
|
||||
err = 1;
|
||||
}
|
||||
if ( pthread_cond_init(&lock->cond,
|
||||
pthread_condattr_default) ) {
|
||||
perror("pthread_cond_init");
|
||||
err = 1;
|
||||
}
|
||||
if ( pthread_mutex_init(&lock->cmutex,
|
||||
pthread_mutexattr_default)) {
|
||||
perror("pthread_mutex_init");
|
||||
err = 1;
|
||||
}
|
||||
if (err) {
|
||||
free((void *)lock);
|
||||
lock = 0;
|
||||
}
|
||||
}
|
||||
|
||||
dprintf(("allocate_lock() -> %lx\n", (long)lock));
|
||||
return (type_lock) lock;
|
||||
}
|
||||
|
||||
void free_lock _P1(lock, type_lock lock)
|
||||
{
|
||||
dprintf(("free_lock(%lx) called\n", (long)lock));
|
||||
if ( pthread_mutex_destroy(&((pthread_lock *)lock)->mutex) )
|
||||
perror("pthread_mutex_destroy");
|
||||
if ( pthread_cond_destroy(&((pthread_lock *)lock)->cond) )
|
||||
perror("pthread_cond_destroy");
|
||||
if ( pthread_mutex_destroy(&((pthread_lock *)lock)->cmutex) )
|
||||
perror("pthread_mutex_destroy");
|
||||
free((void *)lock);
|
||||
}
|
||||
|
||||
int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag)
|
||||
{
|
||||
int success;
|
||||
|
||||
dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
|
||||
{
|
||||
pthread_lock *thelock = (pthread_lock *)lock;
|
||||
success = TRYLOCK_OFFSET +
|
||||
pthread_mutex_trylock( &thelock->mutex );
|
||||
if (success < 0) {
|
||||
perror("pthread_mutex_trylock [1]");
|
||||
success = 0;
|
||||
} else if ( success == 0 && waitflag ) {
|
||||
/* continue trying until we get the lock */
|
||||
|
||||
/* cmutex must be locked by me -- part of the condition
|
||||
* protocol */
|
||||
if ( pthread_mutex_lock( &thelock->cmutex ) )
|
||||
perror("pthread_mutex_lock");
|
||||
while ( 0 == (success = TRYLOCK_OFFSET +
|
||||
pthread_mutex_trylock(&thelock->mutex)) ) {
|
||||
if ( pthread_cond_wait(&thelock->cond,
|
||||
&thelock->cmutex) )
|
||||
perror("pthread_cond_wait");
|
||||
}
|
||||
if (success < 0)
|
||||
perror("pthread_mutex_trylock [2]");
|
||||
/* now ->mutex & ->cmutex are both locked by me */
|
||||
if ( pthread_mutex_unlock( &thelock->cmutex ) )
|
||||
perror("pthread_mutex_unlock");
|
||||
}
|
||||
}
|
||||
dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
|
||||
return success;
|
||||
}
|
||||
|
||||
void release_lock _P1(lock, type_lock lock)
|
||||
{
|
||||
dprintf(("release_lock(%lx) called\n", (long)lock));
|
||||
{
|
||||
pthread_lock *thelock = (pthread_lock *)lock;
|
||||
|
||||
/* tricky: if the release & signal occur between the
|
||||
* pthread_mutex_trylock(&thelock->mutex))
|
||||
* and pthread_cond_wait during the acquire, the acquire
|
||||
* will miss the signal it's waiting for; locking cmutex
|
||||
* around the release prevents that
|
||||
*/
|
||||
if (pthread_mutex_lock( &thelock->cmutex ))
|
||||
perror("pthread_mutex_lock");
|
||||
if (pthread_mutex_unlock( &thelock->mutex ))
|
||||
perror("pthread_mutex_unlock");
|
||||
if (pthread_mutex_unlock( &thelock->cmutex ))
|
||||
perror("pthread_mutex_unlock");
|
||||
|
||||
/* wake up someone (anyone, if any) waiting on the lock */
|
||||
if (pthread_cond_signal( &thelock->cond ))
|
||||
perror("pthread_cond_signal");
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Semaphore support.
|
||||
*/
|
||||
type_sema allocate_sema _P1(value, int value)
|
||||
{
|
||||
char *sema = 0;
|
||||
dprintf(("allocate_sema called\n"));
|
||||
if (!initialized)
|
||||
init_thread();
|
||||
|
||||
dprintf(("allocate_sema() -> %lx\n", (long) sema));
|
||||
return (type_sema) sema;
|
||||
}
|
||||
|
||||
void free_sema _P1(sema, type_sema sema)
|
||||
{
|
||||
dprintf(("free_sema(%lx) called\n", (long) sema));
|
||||
}
|
||||
|
||||
void down_sema _P1(sema, type_sema sema)
|
||||
{
|
||||
dprintf(("down_sema(%lx) called\n", (long) sema));
|
||||
dprintf(("down_sema(%lx) return\n", (long) sema));
|
||||
}
|
||||
|
||||
void up_sema _P1(sema, type_sema sema)
|
||||
{
|
||||
dprintf(("up_sema(%lx)\n", (long) sema));
|
||||
}
|
||||
|
|
@ -0,0 +1,414 @@
|
|||
/***********************************************************
|
||||
Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
|
||||
Amsterdam, The Netherlands.
|
||||
|
||||
All Rights Reserved
|
||||
|
||||
Permission to use, copy, modify, and distribute this software and its
|
||||
documentation for any purpose and without fee is hereby granted,
|
||||
provided that the above copyright notice appear in all copies and that
|
||||
both that copyright notice and this permission notice appear in
|
||||
supporting documentation, and that the names of Stichting Mathematisch
|
||||
Centrum or CWI not be used in advertising or publicity pertaining to
|
||||
distribution of the software without specific, written prior permission.
|
||||
|
||||
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
||||
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
|
||||
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||||
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
||||
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
|
||||
******************************************************************/
|
||||
|
||||
#ifdef WITH_SGI_DL
|
||||
#define USE_DL
|
||||
#endif
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <signal.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/wait.h>
|
||||
#include <sys/prctl.h>
|
||||
#include <ulocks.h>
|
||||
#include <errno.h>
|
||||
|
||||
#define HDR_SIZE 2680 /* sizeof(ushdr_t) */
|
||||
#define MAXPROC 100 /* max # of threads that can be started */
|
||||
|
||||
static usptr_t *shared_arena;
|
||||
static ulock_t count_lock; /* protection for some variables */
|
||||
static ulock_t wait_lock; /* lock used to wait for other threads */
|
||||
static int waiting_for_threads; /* protected by count_lock */
|
||||
static int nthreads; /* protected by count_lock */
|
||||
static int exit_status;
|
||||
#ifndef NO_EXIT_PROG
|
||||
static int do_exit; /* indicates that the program is to exit */
|
||||
#endif
|
||||
static int exiting; /* we're already exiting (for maybe_exit) */
|
||||
static pid_t my_pid; /* PID of main thread */
|
||||
static pid_t pidlist[MAXPROC]; /* PIDs of other threads */
|
||||
static int maxpidindex; /* # of PIDs in pidlist */
|
||||
|
||||
#ifndef NO_EXIT_PROG
|
||||
/*
|
||||
* This routine is called as a signal handler when another thread
|
||||
* exits. When that happens, we must see whether we have to exit as
|
||||
* well (because of an exit_prog()) or whether we should continue on.
|
||||
*/
|
||||
static void exit_sig _P0()
|
||||
{
|
||||
d2printf(("exit_sig called\n"));
|
||||
if (exiting && getpid() == my_pid) {
|
||||
d2printf(("already exiting\n"));
|
||||
return;
|
||||
}
|
||||
if (do_exit) {
|
||||
d2printf(("exiting in exit_sig\n"));
|
||||
#ifdef DEBUG
|
||||
if ((thread_debug & 8) == 0)
|
||||
thread_debug &= ~1; /* don't produce debug messages */
|
||||
#endif
|
||||
exit_thread();
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* This routine is called when a process calls exit(). If that wasn't
|
||||
* done from the library, we do as if an exit_prog() was intended.
|
||||
*/
|
||||
static void maybe_exit _P0()
|
||||
{
|
||||
dprintf(("maybe_exit called\n"));
|
||||
if (exiting) {
|
||||
dprintf(("already exiting\n"));
|
||||
return;
|
||||
}
|
||||
exit_prog(0);
|
||||
}
|
||||
#endif /* NO_EXIT_PROG */
|
||||
|
||||
/*
|
||||
* Initialization.
|
||||
*/
|
||||
static void _init_thread _P0()
|
||||
{
|
||||
#ifndef NO_EXIT_PROG
|
||||
struct sigaction s;
|
||||
#endif /* NO_EXIT_PROG */
|
||||
#ifdef USE_DL
|
||||
long addr, size;
|
||||
#endif /* USE_DL */
|
||||
|
||||
|
||||
#ifdef USE_DL
|
||||
if ((size = usconfig(CONF_INITSIZE, 64*1024)) < 0)
|
||||
perror("usconfig - CONF_INITSIZE (check)");
|
||||
if (usconfig(CONF_INITSIZE, size) < 0)
|
||||
perror("usconfig - CONF_INITSIZE (reset)");
|
||||
addr = (long) dl_getrange(size + HDR_SIZE);
|
||||
dprintf(("trying to use addr %lx-%lx for shared arena\n", addr, addr+size));
|
||||
errno = 0;
|
||||
if ((addr = usconfig(CONF_ATTACHADDR, addr)) < 0 && errno != 0)
|
||||
perror("usconfig - CONF_ATTACHADDR (set)");
|
||||
#endif /* USE_DL */
|
||||
if (usconfig(CONF_INITUSERS, 16) < 0)
|
||||
perror("usconfig - CONF_INITUSERS");
|
||||
my_pid = getpid(); /* so that we know which is the main thread */
|
||||
#ifndef NO_EXIT_PROG
|
||||
atexit(maybe_exit);
|
||||
s.sa_handler = exit_sig;
|
||||
sigemptyset(&s.sa_mask);
|
||||
/*sigaddset(&s.sa_mask, SIGUSR1);*/
|
||||
s.sa_flags = 0;
|
||||
sigaction(SIGUSR1, &s, 0);
|
||||
if (prctl(PR_SETEXITSIG, SIGUSR1) < 0)
|
||||
perror("prctl - PR_SETEXITSIG");
|
||||
#endif /* NO_EXIT_PROG */
|
||||
if (usconfig(CONF_ARENATYPE, US_SHAREDONLY) < 0)
|
||||
perror("usconfig - CONF_ARENATYPE");
|
||||
usconfig(CONF_LOCKTYPE, US_DEBUG); /* XXX */
|
||||
#ifdef DEBUG
|
||||
if (thread_debug & 4)
|
||||
usconfig(CONF_LOCKTYPE, US_DEBUGPLUS);
|
||||
else if (thread_debug & 2)
|
||||
usconfig(CONF_LOCKTYPE, US_DEBUG);
|
||||
#endif /* DEBUG */
|
||||
if ((shared_arena = usinit(tmpnam(0))) == 0)
|
||||
perror("usinit");
|
||||
#ifdef USE_DL
|
||||
if (usconfig(CONF_ATTACHADDR, addr) < 0) /* reset address */
|
||||
perror("usconfig - CONF_ATTACHADDR (reset)");
|
||||
#endif /* USE_DL */
|
||||
if ((count_lock = usnewlock(shared_arena)) == NULL)
|
||||
perror("usnewlock (count_lock)");
|
||||
(void) usinitlock(count_lock);
|
||||
if ((wait_lock = usnewlock(shared_arena)) == NULL)
|
||||
perror("usnewlock (wait_lock)");
|
||||
dprintf(("arena start: %lx, arena size: %ld\n", (long) shared_arena, (long) usconfig(CONF_GETSIZE, shared_arena)));
|
||||
}
|
||||
|
||||
/*
|
||||
* Thread support.
|
||||
*/
|
||||
|
||||
static void clean_threads _P0()
|
||||
{
|
||||
int i;
|
||||
pid_t pid;
|
||||
|
||||
/* clean up any exited threads */
|
||||
i = 0;
|
||||
while (i < maxpidindex) {
|
||||
if ((pid = pidlist[i]) > 0) {
|
||||
pid = waitpid(pid, 0, WNOHANG);
|
||||
if (pid < 0)
|
||||
return;
|
||||
if (pid != 0) {
|
||||
/* a thread has exited */
|
||||
pidlist[i] = pidlist[--maxpidindex];
|
||||
continue; /* don't increment i */
|
||||
}
|
||||
}
|
||||
i++;
|
||||
}
|
||||
}
|
||||
|
||||
int start_new_thread _P2(func, void (*func) _P((void *)), arg, void *arg)
|
||||
{
|
||||
#ifdef USE_DL
|
||||
long addr, size;
|
||||
static int local_initialized = 0;
|
||||
#endif /* USE_DL */
|
||||
int success = 0; /* init not needed when SOLARIS_THREADS and */
|
||||
/* C_THREADS implemented properly */
|
||||
|
||||
dprintf(("start_new_thread called\n"));
|
||||
if (!initialized)
|
||||
init_thread();
|
||||
switch (ussetlock(count_lock)) {
|
||||
case 0: return 0;
|
||||
case -1: perror("ussetlock (count_lock)");
|
||||
}
|
||||
if (maxpidindex >= MAXPROC)
|
||||
success = -1;
|
||||
else {
|
||||
#ifdef USE_DL
|
||||
if (!local_initialized) {
|
||||
if ((size = usconfig(CONF_INITSIZE, 64*1024)) < 0)
|
||||
perror("usconfig - CONF_INITSIZE (check)");
|
||||
if (usconfig(CONF_INITSIZE, size) < 0)
|
||||
perror("usconfig - CONF_INITSIZE (reset)");
|
||||
addr = (long) dl_getrange(size + HDR_SIZE);
|
||||
dprintf(("trying to use addr %lx-%lx for sproc\n", addr, addr+size));
|
||||
errno = 0;
|
||||
if ((addr = usconfig(CONF_ATTACHADDR, addr)) < 0 && errno != 0)
|
||||
perror("usconfig - CONF_ATTACHADDR (set)");
|
||||
}
|
||||
#endif /* USE_DL */
|
||||
clean_threads();
|
||||
if ((success = sproc(func, PR_SALL, arg)) < 0)
|
||||
perror("sproc");
|
||||
#ifdef USE_DL
|
||||
if (!local_initialized) {
|
||||
if (usconfig(CONF_ATTACHADDR, addr) < 0) /* reset address */
|
||||
perror("usconfig - CONF_ATTACHADDR (reset)");
|
||||
local_initialized = 1;
|
||||
}
|
||||
#endif /* USE_DL */
|
||||
if (success >= 0) {
|
||||
nthreads++;
|
||||
pidlist[maxpidindex++] = success;
|
||||
dprintf(("pidlist[%d] = %d\n", maxpidindex-1, success));
|
||||
}
|
||||
}
|
||||
if (usunsetlock(count_lock) < 0)
|
||||
perror("usunsetlock (count_lock)");
|
||||
return success < 0 ? 0 : 1;
|
||||
}
|
||||
|
||||
static void do_exit_thread _P1(no_cleanup, int no_cleanup)
|
||||
{
|
||||
dprintf(("exit_thread called\n"));
|
||||
if (!initialized)
|
||||
if (no_cleanup)
|
||||
_exit(0);
|
||||
else
|
||||
exit(0);
|
||||
if (ussetlock(count_lock) < 0)
|
||||
perror("ussetlock (count_lock)");
|
||||
nthreads--;
|
||||
if (getpid() == my_pid) {
|
||||
/* main thread; wait for other threads to exit */
|
||||
exiting = 1;
|
||||
#ifndef NO_EXIT_PROG
|
||||
if (do_exit) {
|
||||
int i;
|
||||
|
||||
/* notify other threads */
|
||||
clean_threads();
|
||||
if (nthreads >= 0) {
|
||||
dprintf(("kill other threads\n"));
|
||||
for (i = 0; i < maxpidindex; i++)
|
||||
if (pidlist[i] > 0)
|
||||
(void) kill(pidlist[i],
|
||||
SIGKILL);
|
||||
_exit(exit_status);
|
||||
}
|
||||
}
|
||||
#endif /* NO_EXIT_PROG */
|
||||
waiting_for_threads = 1;
|
||||
if (ussetlock(wait_lock) < 0)
|
||||
perror("ussetlock (wait_lock)");
|
||||
for (;;) {
|
||||
if (nthreads < 0) {
|
||||
dprintf(("really exit (%d)\n", exit_status));
|
||||
if (no_cleanup)
|
||||
_exit(exit_status);
|
||||
else
|
||||
exit(exit_status);
|
||||
}
|
||||
if (usunsetlock(count_lock) < 0)
|
||||
perror("usunsetlock (count_lock)");
|
||||
dprintf(("waiting for other threads (%d)\n", nthreads));
|
||||
if (ussetlock(wait_lock) < 0)
|
||||
perror("ussetlock (wait_lock)");
|
||||
if (ussetlock(count_lock) < 0)
|
||||
perror("ussetlock (count_lock)");
|
||||
}
|
||||
}
|
||||
/* not the main thread */
|
||||
if (waiting_for_threads) {
|
||||
dprintf(("main thread is waiting\n"));
|
||||
if (usunsetlock(wait_lock) < 0)
|
||||
perror("usunsetlock (wait_lock)");
|
||||
}
|
||||
#ifndef NO_EXIT_PROG
|
||||
else if (do_exit)
|
||||
(void) kill(my_pid, SIGUSR1);
|
||||
#endif /* NO_EXIT_PROG */
|
||||
if (usunsetlock(count_lock) < 0)
|
||||
perror("usunsetlock (count_lock)");
|
||||
_exit(0);
|
||||
}
|
||||
|
||||
void exit_thread _P0()
|
||||
{
|
||||
do_exit_thread(0);
|
||||
}
|
||||
|
||||
void _exit_thread _P0()
|
||||
{
|
||||
do_exit_thread(1);
|
||||
}
|
||||
|
||||
#ifndef NO_EXIT_PROG
|
||||
static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup)
|
||||
{
|
||||
dprintf(("exit_prog(%d) called\n", status));
|
||||
if (!initialized)
|
||||
if (no_cleanup)
|
||||
_exit(status);
|
||||
else
|
||||
exit(status);
|
||||
do_exit = 1;
|
||||
exit_status = status;
|
||||
do_exit_thread(no_cleanup);
|
||||
}
|
||||
|
||||
void exit_prog _P1(status, int status)
|
||||
{
|
||||
do_exit_prog(status, 0);
|
||||
}
|
||||
|
||||
void _exit_prog _P1(status, int status)
|
||||
{
|
||||
do_exit_prog(status, 1);
|
||||
}
|
||||
#endif /* NO_EXIT_PROG */
|
||||
|
||||
/*
|
||||
* Lock support.
|
||||
*/
|
||||
type_lock allocate_lock _P0()
|
||||
{
|
||||
ulock_t lock;
|
||||
|
||||
dprintf(("allocate_lock called\n"));
|
||||
if (!initialized)
|
||||
init_thread();
|
||||
|
||||
if ((lock = usnewlock(shared_arena)) == NULL)
|
||||
perror("usnewlock");
|
||||
(void) usinitlock(lock);
|
||||
dprintf(("allocate_lock() -> %lx\n", (long)lock));
|
||||
return (type_lock) lock;
|
||||
}
|
||||
|
||||
void free_lock _P1(lock, type_lock lock)
|
||||
{
|
||||
dprintf(("free_lock(%lx) called\n", (long)lock));
|
||||
usfreelock((ulock_t) lock, shared_arena);
|
||||
}
|
||||
|
||||
int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag)
|
||||
{
|
||||
int success;
|
||||
|
||||
dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
|
||||
errno = 0; /* clear it just in case */
|
||||
if (waitflag)
|
||||
success = ussetlock((ulock_t) lock);
|
||||
else
|
||||
success = uscsetlock((ulock_t) lock, 1); /* Try it once */
|
||||
if (success < 0)
|
||||
perror(waitflag ? "ussetlock" : "uscsetlock");
|
||||
dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
|
||||
return success;
|
||||
}
|
||||
|
||||
void release_lock _P1(lock, type_lock lock)
|
||||
{
|
||||
dprintf(("release_lock(%lx) called\n", (long)lock));
|
||||
if (usunsetlock((ulock_t) lock) < 0)
|
||||
perror("usunsetlock");
|
||||
}
|
||||
|
||||
/*
|
||||
* Semaphore support.
|
||||
*/
|
||||
type_sema allocate_sema _P1(value, int value)
|
||||
{
|
||||
usema_t *sema;
|
||||
dprintf(("allocate_sema called\n"));
|
||||
if (!initialized)
|
||||
init_thread();
|
||||
|
||||
if ((sema = usnewsema(shared_arena, value)) == NULL)
|
||||
perror("usnewsema");
|
||||
dprintf(("allocate_sema() -> %lx\n", (long) sema));
|
||||
return (type_sema) sema;
|
||||
}
|
||||
|
||||
void free_sema _P1(sema, type_sema sema)
|
||||
{
|
||||
dprintf(("free_sema(%lx) called\n", (long) sema));
|
||||
usfreesema((usema_t *) sema, shared_arena);
|
||||
}
|
||||
|
||||
void down_sema _P1(sema, type_sema sema)
|
||||
{
|
||||
dprintf(("down_sema(%lx) called\n", (long) sema));
|
||||
if (uspsema((usema_t *) sema) < 0)
|
||||
perror("uspsema");
|
||||
dprintf(("down_sema(%lx) return\n", (long) sema));
|
||||
}
|
||||
|
||||
void up_sema _P1(sema, type_sema sema)
|
||||
{
|
||||
dprintf(("up_sema(%lx)\n", (long) sema));
|
||||
if (usvsema((usema_t *) sema) < 0)
|
||||
perror("usvsema");
|
||||
}
|
||||
|
|
@ -0,0 +1,219 @@
|
|||
/***********************************************************
|
||||
Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
|
||||
Amsterdam, The Netherlands.
|
||||
|
||||
All Rights Reserved
|
||||
|
||||
Permission to use, copy, modify, and distribute this software and its
|
||||
documentation for any purpose and without fee is hereby granted,
|
||||
provided that the above copyright notice appear in all copies and that
|
||||
both that copyright notice and this permission notice appear in
|
||||
supporting documentation, and that the names of Stichting Mathematisch
|
||||
Centrum or CWI not be used in advertising or publicity pertaining to
|
||||
distribution of the software without specific, written prior permission.
|
||||
|
||||
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
||||
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
|
||||
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||||
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
||||
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
|
||||
******************************************************************/
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include </usr/include/thread.h>
|
||||
|
||||
|
||||
/*
|
||||
* Initialization.
|
||||
*/
|
||||
static void _init_thread _P0()
|
||||
{
|
||||
}
|
||||
|
||||
/*
|
||||
* Thread support.
|
||||
*/
|
||||
struct func_arg {
|
||||
void (*func) _P((void *));
|
||||
void *arg;
|
||||
};
|
||||
|
||||
static void *new_func _P1(funcarg, void *funcarg)
|
||||
{
|
||||
void (*func) _P((void *));
|
||||
void *arg;
|
||||
|
||||
func = ((struct func_arg *) funcarg)->func;
|
||||
arg = ((struct func_arg *) funcarg)->arg;
|
||||
free(funcarg);
|
||||
(*func)(arg);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int start_new_thread _P2(func, void (*func) _P((void *)), arg, void *arg)
|
||||
{
|
||||
struct func_arg *funcarg;
|
||||
int success = 0; /* init not needed when SOLARIS_THREADS and */
|
||||
/* C_THREADS implemented properly */
|
||||
|
||||
dprintf(("start_new_thread called\n"));
|
||||
if (!initialized)
|
||||
init_thread();
|
||||
funcarg = (struct func_arg *) malloc(sizeof(struct func_arg));
|
||||
funcarg->func = func;
|
||||
funcarg->arg = arg;
|
||||
if (thr_create(0, 0, new_func, funcarg, THR_NEW_LWP, 0)) {
|
||||
perror("thr_create");
|
||||
free((void *) funcarg);
|
||||
success = -1;
|
||||
}
|
||||
return success < 0 ? 0 : 1;
|
||||
}
|
||||
|
||||
static void do_exit_thread _P1(no_cleanup, int no_cleanup)
|
||||
{
|
||||
dprintf(("exit_thread called\n"));
|
||||
if (!initialized)
|
||||
if (no_cleanup)
|
||||
_exit(0);
|
||||
else
|
||||
exit(0);
|
||||
thr_exit(0);
|
||||
}
|
||||
|
||||
void exit_thread _P0()
|
||||
{
|
||||
do_exit_thread(0);
|
||||
}
|
||||
|
||||
void _exit_thread _P0()
|
||||
{
|
||||
do_exit_thread(1);
|
||||
}
|
||||
|
||||
#ifndef NO_EXIT_PROG
|
||||
static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup)
|
||||
{
|
||||
dprintf(("exit_prog(%d) called\n", status));
|
||||
if (!initialized)
|
||||
if (no_cleanup)
|
||||
_exit(status);
|
||||
else
|
||||
exit(status);
|
||||
if (no_cleanup)
|
||||
_exit(status);
|
||||
else
|
||||
exit(status);
|
||||
}
|
||||
|
||||
void exit_prog _P1(status, int status)
|
||||
{
|
||||
do_exit_prog(status, 0);
|
||||
}
|
||||
|
||||
void _exit_prog _P1(status, int status)
|
||||
{
|
||||
do_exit_prog(status, 1);
|
||||
}
|
||||
#endif /* NO_EXIT_PROG */
|
||||
|
||||
/*
|
||||
* Lock support.
|
||||
*/
|
||||
type_lock allocate_lock _P0()
|
||||
{
|
||||
mutex_t *lock;
|
||||
|
||||
dprintf(("allocate_lock called\n"));
|
||||
if (!initialized)
|
||||
init_thread();
|
||||
|
||||
lock = (mutex_t *) malloc(sizeof(mutex_t));
|
||||
if (mutex_init(lock, USYNC_THREAD, 0)) {
|
||||
perror("mutex_init");
|
||||
free((void *) lock);
|
||||
lock = 0;
|
||||
}
|
||||
dprintf(("allocate_lock() -> %lx\n", (long)lock));
|
||||
return (type_lock) lock;
|
||||
}
|
||||
|
||||
void free_lock _P1(lock, type_lock lock)
|
||||
{
|
||||
dprintf(("free_lock(%lx) called\n", (long)lock));
|
||||
mutex_destroy((mutex_t *) lock);
|
||||
free((void *) lock);
|
||||
}
|
||||
|
||||
int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag)
|
||||
{
|
||||
int success;
|
||||
|
||||
dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
|
||||
if (waitflag)
|
||||
success = mutex_lock((mutex_t *) lock);
|
||||
else
|
||||
success = mutex_trylock((mutex_t *) lock);
|
||||
if (success < 0)
|
||||
perror(waitflag ? "mutex_lock" : "mutex_trylock");
|
||||
else
|
||||
success = !success; /* solaris does it the other way round */
|
||||
dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
|
||||
return success;
|
||||
}
|
||||
|
||||
void release_lock _P1(lock, type_lock lock)
|
||||
{
|
||||
dprintf(("release_lock(%lx) called\n", (long)lock));
|
||||
if (mutex_unlock((mutex_t *) lock))
|
||||
perror("mutex_unlock");
|
||||
}
|
||||
|
||||
/*
|
||||
* Semaphore support.
|
||||
*/
|
||||
type_sema allocate_sema _P1(value, int value)
|
||||
{
|
||||
sema_t *sema;
|
||||
dprintf(("allocate_sema called\n"));
|
||||
if (!initialized)
|
||||
init_thread();
|
||||
|
||||
sema = (sema_t *) malloc(sizeof(sema_t));
|
||||
if (sema_init(sema, value, USYNC_THREAD, 0)) {
|
||||
perror("sema_init");
|
||||
free((void *) sema);
|
||||
sema = 0;
|
||||
}
|
||||
dprintf(("allocate_sema() -> %lx\n", (long) sema));
|
||||
return (type_sema) sema;
|
||||
}
|
||||
|
||||
void free_sema _P1(sema, type_sema sema)
|
||||
{
|
||||
dprintf(("free_sema(%lx) called\n", (long) sema));
|
||||
if (sema_destroy((sema_t *) sema))
|
||||
perror("sema_destroy");
|
||||
free((void *) sema);
|
||||
}
|
||||
|
||||
void down_sema _P1(sema, type_sema sema)
|
||||
{
|
||||
dprintf(("down_sema(%lx) called\n", (long) sema));
|
||||
if (sema_wait((sema_t *) sema))
|
||||
perror("sema_wait");
|
||||
dprintf(("down_sema(%lx) return\n", (long) sema));
|
||||
}
|
||||
|
||||
void up_sema _P1(sema, type_sema sema)
|
||||
{
|
||||
dprintf(("up_sema(%lx)\n", (long) sema));
|
||||
if (sema_post((sema_t *) sema))
|
||||
perror("sema_post");
|
||||
}
|
||||
Loading…
Reference in New Issue