thread_cthread.h revision e944da8916e053a6a1deda8ce3fa61304d68f872 
1/***********************************************************
2Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
3Amsterdam, The Netherlands.
4
5                        All Rights Reserved
6
7Permission to use, copy, modify, and distribute this software and its
8documentation for any purpose and without fee is hereby granted,
9provided that the above copyright notice appear in all copies and that
10both that copyright notice and this permission notice appear in
11supporting documentation, and that the names of Stichting Mathematisch
12Centrum or CWI not be used in advertising or publicity pertaining to
13distribution of the software without specific, written prior permission.
14
15STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
16THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
17FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
18FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
19WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
20ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
21OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22
23******************************************************************/
24
25#include <cthreads.h>
26
27
28/*
29 * Initialization.
30 */
31static void _init_thread _P0()
32{
33	cthread_init();
34}
35
36/*
37 * Thread support.
38 */
39int start_new_thread _P2(func, void (*func) _P((void *)), arg, void *arg)
40{
41	int success = 0;	/* init not needed when SOLARIS_THREADS and */
42				/* C_THREADS implemented properly */
43
44	dprintf(("start_new_thread called\n"));
45	if (!initialized)
46		init_thread();
47	(void) cthread_fork(func, arg);
48	return success < 0 ? 0 : 1;
49}
50
51long get_thread_ident _P0()
52{
53	if (!initialized)
54		init_thread();
55}
56
57static void do_exit_thread _P1(no_cleanup, int no_cleanup)
58{
59	dprintf(("exit_thread called\n"));
60	if (!initialized)
61		if (no_cleanup)
62			_exit(0);
63		else
64			exit(0);
65	cthread_exit(0);
66}
67
68void exit_thread _P0()
69{
70	do_exit_thread(0);
71}
72
73void _exit_thread _P0()
74{
75	do_exit_thread(1);
76}
77
78#ifndef NO_EXIT_PROG
79static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup)
80{
81	dprintf(("exit_prog(%d) called\n", status));
82	if (!initialized)
83		if (no_cleanup)
84			_exit(status);
85		else
86			exit(status);
87}
88
89void exit_prog _P1(status, int status)
90{
91	do_exit_prog(status, 0);
92}
93
94void _exit_prog _P1(status, int status)
95{
96	do_exit_prog(status, 1);
97}
98#endif /* NO_EXIT_PROG */
99
100/*
101 * Lock support.
102 */
103type_lock allocate_lock _P0()
104{
105
106	dprintf(("allocate_lock called\n"));
107	if (!initialized)
108		init_thread();
109
110	dprintf(("allocate_lock() -> %lx\n", (long)lock));
111	return (type_lock) lock;
112}
113
114void free_lock _P1(lock, type_lock lock)
115{
116	dprintf(("free_lock(%lx) called\n", (long)lock));
117}
118
119int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag)
120{
121	int success;
122
123	dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
124	dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
125	return success;
126}
127
128void release_lock _P1(lock, type_lock lock)
129{
130	dprintf(("release_lock(%lx) called\n", (long)lock));
131}
132
133/*
134 * Semaphore support.
135 */
136type_sema allocate_sema _P1(value, int value)
137{
138	dprintf(("allocate_sema called\n"));
139	if (!initialized)
140		init_thread();
141
142	dprintf(("allocate_sema() -> %lx\n", (long) sema));
143	return (type_sema) sema;
144}
145
146void free_sema _P1(sema, type_sema sema)
147{
148	dprintf(("free_sema(%lx) called\n", (long) sema));
149}
150
151void down_sema _P1(sema, type_sema sema)
152{
153	dprintf(("down_sema(%lx) called\n", (long) sema));
154	dprintf(("down_sema(%lx) return\n", (long) sema));
155}
156
157void up_sema _P1(sema, type_sema sema)
158{
159	dprintf(("up_sema(%lx)\n", (long) sema));
160}
161