gcc/boehm-gc/solaris_pthreads.c

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/*
* Copyright (c) 1994 by Xerox Corporation. All rights reserved.
*
* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
*
* Permission is hereby granted to use or copy this program
* for any purpose, provided the above notices are retained on all copies.
* Permission to modify the code and to distribute modified code is granted,
* provided the above notices are retained, and a notice that the code was
* modified is included with the above copyright notice.
*/
/*
* Support code for Solaris threads. Provides functionality we wish Sun
* had provided. Relies on some information we probably shouldn't rely on.
Import GC 6.3alpha1. * BCC_MAKEFILE: Merge with GC 6.3alpha1 release. * ChangeLog: Likewise. * Makefile.am: Likewise. * Makefile.direct: Likewise. * Makefile.dj: Likewise. * allchblk.c: Likewise. * alloc.c: Likewise. * backgraph.c: Likewise. * configure.host: Likewise. * configure.in: Likewise. * dbg_mlc.c: Likewise. * dyn_load.c: Likewise. * finalize.c: Likewise. * gc_cpp.cc: Likewise. * gc_dlopen.c: Likewise. * gcj_mlc.c: Likewise. * if_mach.c: Likewise. * mach_dep.c: Likewise. * malloc.c: Likewise. * mallocx.c: Likewise. * mark.c: Likewise. * mark_rts.c: Likewise. * misc.c: Likewise. * os_dep.c: Likewise. * ptr_chck.c: Likewise. * reclaim.c: Likewise. * solaris_pthreads.c: Likewise. * solaris_threads.c: Likewise. * sparc_mach_dep.S: Likewise. * threadlibs.c: Likewise. * typd_mlc.c: Likewise. * version.h: Likewise. * win32_threads.c: Likewise. * Mac_files/MacOS_Test_config.h: Likewise. * Mac_files/MacOS_config.h: Likewise. * cord/cordbscs.c: Likewise. * cord/cordprnt.c: Likewise. * cord/de_win.c: Likewise. * doc/README: Likewise. * doc/README.MacOSX: Likewise. * doc/README.changes: Likewise. * doc/README.environment: Likewise. * doc/README.ews4800: Likewise. * doc/README.linux: Likewise. * doc/README.macros: Likewise. * doc/README.win32: Likewise. * doc/debugging.html: Likewise. * doc/gcdescr.html: Likewise. * doc/tree.html: Likewise. * include/Makefile.in: Likewise. * include/gc.h: Likewise. * include/gc_cpp.h: Likewise. * include/gc_local_alloc.h: Likewise. * include/gc_mark.h: Likewise. * include/gc_pthread_redirects.h: Likewise. * include/gc_typed.h: Likewise. * include/new_gc_alloc.h: Likewise. * include/private/dbg_mlc.h: Likewise. * include/private/gc_hdrs.h: Likewise. * include/private/gc_locks.h: Likewise. * include/private/gc_pmark.h: Likewise. * include/private/gc_priv.h: Likewise. * include/private/gcconfig.h: Likewise. * include/private/solaris_threads.h: Likewise. * include/private/specific.h: Likewise. * tests/test.c: Likewise. * tests/test_cpp.cc: Likewise. * configure: Rebuild. * Makefile.in: Rebuild. * mips_sgi_mach_dep.s: Add. * alpha_mach_dep.s: Remove. * irix_threads.c: Remove. * linux_threads.c: Remove. * mips_sgi_mach_dep.S: Remove. * missing: Remove. * powerpc_macosx_mach_dep.s: Remove. * doc/Makefile.am: Remove. * doc/Makefile.in: Remove. From-SVN: r69880
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* Modified by Peter C. for Solaris Posix Threads.
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*/
# include "private/gc_priv.h"
# if defined(GC_SOLARIS_PTHREADS)
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# include <pthread.h>
# include <thread.h>
# include <signal.h>
# include <fcntl.h>
# include <sys/types.h>
# include <sys/mman.h>
# include <sys/time.h>
# include <sys/resource.h>
# include <sys/stat.h>
# include <sys/syscall.h>
# include <sys/procfs.h>
# include <sys/lwp.h>
# include <sys/reg.h>
# define _CLASSIC_XOPEN_TYPES
# include <unistd.h>
# include <errno.h>
# include "private/solaris_threads.h"
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# include <stdio.h>
#undef pthread_join
#undef pthread_create
pthread_cond_t GC_prom_join_cv; /* Broadcast when any thread terminates */
pthread_cond_t GC_create_cv; /* Signalled when a new undetached */
/* thread starts. */
extern GC_bool GC_multithreaded;
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/* We use the allocation lock to protect thread-related data structures. */
/* We stop the world using /proc primitives. This makes some */
/* minimal assumptions about the threads implementation. */
/* We don't play by the rules, since the rules make this */
/* impossible (as of Solaris 2.3). Also note that as of */
/* Solaris 2.3 the various thread and lwp suspension */
/* primitives failed to stop threads by the time the request */
/* is completed. */
int GC_pthread_join(pthread_t wait_for, void **status)
{
return GC_thr_join((thread_t)wait_for, NULL, status);
}
int
GC_pthread_create(pthread_t *new_thread,
const pthread_attr_t *attr_in,
void * (*thread_execp)(void *), void *arg)
{
int result;
GC_thread t;
pthread_t my_new_thread;
pthread_attr_t attr;
word my_flags = 0;
int flag;
void * stack = 0;
size_t stack_size = 0;
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int n;
struct sched_param schedparam;
(void)pthread_attr_init(&attr);
if (attr_in != 0) {
(void)pthread_attr_getstacksize(attr_in, &stack_size);
(void)pthread_attr_getstackaddr(attr_in, &stack);
}
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LOCK();
if (!GC_is_initialized) {
GC_init_inner();
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}
GC_multithreaded++;
if (stack == 0) {
if (stack_size == 0)
stack_size = 1048576;
/* ^-- 1 MB (this was GC_min_stack_sz, but that
* violates the pthread_create documentation which
* says the default value if none is supplied is
* 1MB) */
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else
stack_size += thr_min_stack();
stack = (void *)GC_stack_alloc(&stack_size);
if (stack == 0) {
GC_multithreaded--;
UNLOCK();
errno = ENOMEM;
return -1;
}
} else {
my_flags |= CLIENT_OWNS_STACK;
}
(void)pthread_attr_setstacksize(&attr, stack_size);
(void)pthread_attr_setstackaddr(&attr, stack);
if (attr_in != 0) {
(void)pthread_attr_getscope(attr_in, &n);
(void)pthread_attr_setscope(&attr, n);
(void)pthread_attr_getschedparam(attr_in, &schedparam);
(void)pthread_attr_setschedparam(&attr, &schedparam);
(void)pthread_attr_getschedpolicy(attr_in, &n);
(void)pthread_attr_setschedpolicy(&attr, n);
(void)pthread_attr_getinheritsched(attr_in, &n);
(void)pthread_attr_setinheritsched(&attr, n);
(void)pthread_attr_getdetachstate(attr_in, &flag);
if (flag == PTHREAD_CREATE_DETACHED) {
my_flags |= DETACHED;
}
(void)pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
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}
/*
* thr_create can call malloc(), which if redirected will
* attempt to acquire the allocation lock.
* Unlock here to prevent deadlock.
*/
#if 0
#ifdef I386
UNLOCK();
#endif
#endif
result =
pthread_create(&my_new_thread, &attr, thread_execp, arg);
#if 0
#ifdef I386
LOCK();
#endif
#endif
if (result == 0) {
t = GC_new_thread(my_new_thread);
t -> flags = my_flags;
if (!(my_flags & DETACHED)) cond_init(&(t->join_cv), USYNC_THREAD, 0);
t -> stack = stack;
t -> stack_size = stack_size;
if (new_thread != 0) *new_thread = my_new_thread;
pthread_cond_signal(&GC_create_cv);
} else {
if (!(my_flags & CLIENT_OWNS_STACK)) {
GC_stack_free(stack, stack_size);
}
GC_multithreaded--;
}
UNLOCK();
pthread_attr_destroy(&attr);
return(result);
}
# else
#ifndef LINT
int GC_no_sunOS_pthreads;
#endif
# endif /* GC_SOLARIS_PTHREADS */
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