2
* Copyright (c) 1994 by Xerox Corporation. All rights reserved.
4
* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
5
* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
7
* Permission is hereby granted to use or copy this program
8
* for any purpose, provided the above notices are retained on all copies.
9
* Permission to modify the code and to distribute modified code is granted,
10
* provided the above notices are retained, and a notice that the code was
11
* modified is included with the above copyright notice.
14
* Support code for Solaris threads. Provides functionality we wish Sun
15
* had provided. Relies on some information we probably shouldn't rely on.
16
* Modified by Peter C. for Solaris Posix Threads.
19
# include "private/gc_priv.h"
21
# if defined(GC_SOLARIS_PTHREADS)
26
# include <sys/types.h>
27
# include <sys/mman.h>
28
# include <sys/time.h>
29
# include <sys/resource.h>
30
# include <sys/stat.h>
31
# include <sys/syscall.h>
32
# include <sys/procfs.h>
35
# define _CLASSIC_XOPEN_TYPES
38
# include "private/solaris_threads.h"
44
pthread_cond_t GC_prom_join_cv; /* Broadcast when any thread terminates */
45
pthread_cond_t GC_create_cv; /* Signalled when a new undetached */
48
extern GC_bool GC_multithreaded;
50
/* We use the allocation lock to protect thread-related data structures. */
52
/* We stop the world using /proc primitives. This makes some */
53
/* minimal assumptions about the threads implementation. */
54
/* We don't play by the rules, since the rules make this */
55
/* impossible (as of Solaris 2.3). Also note that as of */
56
/* Solaris 2.3 the various thread and lwp suspension */
57
/* primitives failed to stop threads by the time the request */
62
int GC_pthread_join(pthread_t wait_for, void **status)
64
return GC_thr_join((thread_t)wait_for, NULL, status);
69
GC_pthread_create(pthread_t *new_thread,
70
const pthread_attr_t *attr_in,
71
void * (*thread_execp)(void *), void *arg)
75
pthread_t my_new_thread;
80
size_t stack_size = 0;
82
struct sched_param schedparam;
84
(void)pthread_attr_init(&attr);
86
(void)pthread_attr_getstacksize(attr_in, &stack_size);
87
(void)pthread_attr_getstackaddr(attr_in, &stack);
91
if (!GC_is_initialized) {
99
/* ^-- 1 MB (this was GC_min_stack_sz, but that
100
* violates the pthread_create documentation which
101
* says the default value if none is supplied is
104
stack_size += thr_min_stack();
106
stack = (void *)GC_stack_alloc(&stack_size);
114
my_flags |= CLIENT_OWNS_STACK;
116
(void)pthread_attr_setstacksize(&attr, stack_size);
117
(void)pthread_attr_setstackaddr(&attr, stack);
119
(void)pthread_attr_getscope(attr_in, &n);
120
(void)pthread_attr_setscope(&attr, n);
121
(void)pthread_attr_getschedparam(attr_in, &schedparam);
122
(void)pthread_attr_setschedparam(&attr, &schedparam);
123
(void)pthread_attr_getschedpolicy(attr_in, &n);
124
(void)pthread_attr_setschedpolicy(&attr, n);
125
(void)pthread_attr_getinheritsched(attr_in, &n);
126
(void)pthread_attr_setinheritsched(&attr, n);
128
(void)pthread_attr_getdetachstate(attr_in, &flag);
129
if (flag == PTHREAD_CREATE_DETACHED) {
130
my_flags |= DETACHED;
132
(void)pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
135
* thr_create can call malloc(), which if redirected will
136
* attempt to acquire the allocation lock.
137
* Unlock here to prevent deadlock.
147
pthread_create(&my_new_thread, &attr, thread_execp, arg);
154
t = GC_new_thread(my_new_thread);
155
t -> flags = my_flags;
156
if (!(my_flags & DETACHED)) cond_init(&(t->join_cv), USYNC_THREAD, 0);
158
t -> stack_size = stack_size;
159
if (new_thread != 0) *new_thread = my_new_thread;
160
pthread_cond_signal(&GC_create_cv);
162
if (!(my_flags & CLIENT_OWNS_STACK)) {
163
GC_stack_free(stack, stack_size);
168
pthread_attr_destroy(&attr);
175
int GC_no_sunOS_pthreads;
178
# endif /* GC_SOLARIS_PTHREADS */