Add m-esr52 at 52.6.0

1 files changed, 551 insertions, 0 deletions

diff --git a/nsprpub/pr/src/md/unix/unixware.c b/nsprpub/pr/src/md/unix/unixware.c
new file mode 100644
index 000000000..638af5f2e
--- /dev/null
+++ b/nsprpub/pr/src/md/unix/unixware.c
@@ -0,0 +1,551 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "primpl.h"
+
+#if !defined (USE_SVR4_THREADS)
+
+/*
+         * using only NSPR threads here
+ */
+
+#include <setjmp.h>
+
+void _MD_EarlyInit(void)
+{
+}
+
+PRWord *_MD_HomeGCRegisters(PRThread *t, int isCurrent, int *np)
+{
+    if (isCurrent) {
+	(void) setjmp(CONTEXT(t));
+    }
+    *np = sizeof(CONTEXT(t)) / sizeof(PRWord);
+    return (PRWord *) CONTEXT(t);
+}
+
+#ifdef ALARMS_BREAK_TCP /* I don't think they do */
+
+PRInt32 _MD_connect(PRInt32 osfd, const PRNetAddr *addr, PRInt32 addrlen,
+                        PRIntervalTime timeout)
+{
+    PRInt32 rv;
+
+    _MD_BLOCK_CLOCK_INTERRUPTS();
+    rv = _connect(osfd,addr,addrlen);
+    _MD_UNBLOCK_CLOCK_INTERRUPTS();
+}
+
+PRInt32 _MD_accept(PRInt32 osfd, PRNetAddr *addr, PRInt32 addrlen,
+                        PRIntervalTime timeout)
+{
+    PRInt32 rv;
+
+    _MD_BLOCK_CLOCK_INTERRUPTS();
+    rv = _accept(osfd,addr,addrlen);
+    _MD_UNBLOCK_CLOCK_INTERRUPTS();
+    return(rv);
+}
+#endif
+
+/*
+ * These are also implemented in pratom.c using NSPR locks.  Any reason
+ * this might be better or worse?  If you like this better, define
+ * _PR_HAVE_ATOMIC_OPS in include/md/unixware.h
+ */
+#ifdef _PR_HAVE_ATOMIC_OPS
+/* Atomic operations */
+#include  <stdio.h>
+static FILE *_uw_semf;
+
+void
+_MD_INIT_ATOMIC(void)
+{
+    /* Sigh.  Sure wish SYSV semaphores weren't such a pain to use */
+    if ((_uw_semf = tmpfile()) == NULL)
+        PR_ASSERT(0);
+
+    return;
+}
+
+void
+_MD_ATOMIC_INCREMENT(PRInt32 *val)
+{
+    flockfile(_uw_semf);
+    (*val)++;
+    unflockfile(_uw_semf);
+}
+
+void
+_MD_ATOMIC_ADD(PRInt32 *ptr, PRInt32 val)
+{
+    flockfile(_uw_semf);
+    (*ptr) += val;
+    unflockfile(_uw_semf);
+}
+
+void
+_MD_ATOMIC_DECREMENT(PRInt32 *val)
+{
+    flockfile(_uw_semf);
+    (*val)--;
+    unflockfile(_uw_semf);
+}
+
+void
+_MD_ATOMIC_SET(PRInt32 *val, PRInt32 newval)
+{
+    flockfile(_uw_semf);
+    *val = newval;
+    unflockfile(_uw_semf);
+}
+#endif
+
+void
+_MD_SET_PRIORITY(_MDThread *thread, PRUintn newPri)
+{
+    return;
+}
+
+PRStatus
+_MD_InitializeThread(PRThread *thread)
+{
+	return PR_SUCCESS;
+}
+
+PRStatus
+_MD_WAIT(PRThread *thread, PRIntervalTime ticks)
+{
+    PR_ASSERT(!(thread->flags & _PR_GLOBAL_SCOPE));
+    _PR_MD_SWITCH_CONTEXT(thread);
+    return PR_SUCCESS;
+}
+
+PRStatus
+_MD_WAKEUP_WAITER(PRThread *thread)
+{
+    if (thread) {
+	PR_ASSERT(!(thread->flags & _PR_GLOBAL_SCOPE));
+    }
+    return PR_SUCCESS;
+}
+
+/* These functions should not be called for Unixware */
+void
+_MD_YIELD(void)
+{
+    PR_NOT_REACHED("_MD_YIELD should not be called for Unixware.");
+}
+
+PRStatus
+_MD_CREATE_THREAD(
+    PRThread *thread,
+    void (*start) (void *),
+    PRThreadPriority priority,
+    PRThreadScope scope,
+    PRThreadState state,
+    PRUint32 stackSize)
+{
+    PR_NOT_REACHED("_MD_CREATE_THREAD should not be called for Unixware.");
+}
+
+#else  /* USE_SVR4_THREADS */
+
+/* NOTE:
+ * SPARC v9 (Ultras) do have an atomic test-and-set operation.  But
+ * SPARC v8 doesn't.  We should detect in the init if we are running on
+ * v8 or v9, and then use assembly where we can.
+ */
+
+#include <thread.h>
+#include <synch.h>
+
+static mutex_t _unixware_atomic = DEFAULTMUTEX;
+
+#define TEST_THEN_ADD(where, inc) \
+    if (mutex_lock(&_unixware_atomic) != 0)\
+        PR_ASSERT(0);\
+    *where += inc;\
+    if (mutex_unlock(&_unixware_atomic) != 0)\
+        PR_ASSERT(0);
+
+#define TEST_THEN_SET(where, val) \
+    if (mutex_lock(&_unixware_atomic) != 0)\
+        PR_ASSERT(0);\
+    *where = val;\
+    if (mutex_unlock(&_unixware_atomic) != 0)\
+        PR_ASSERT(0);
+
+void
+_MD_INIT_ATOMIC(void)
+{
+}
+
+void
+_MD_ATOMIC_INCREMENT(PRInt32 *val)
+{
+    TEST_THEN_ADD(val, 1);
+}
+
+void
+_MD_ATOMIC_ADD(PRInt32 *ptr, PRInt32 val)
+{
+    TEST_THEN_ADD(ptr, val);
+}
+
+void
+_MD_ATOMIC_DECREMENT(PRInt32 *val)
+{
+    TEST_THEN_ADD(val, 0xffffffff);
+}
+
+void
+_MD_ATOMIC_SET(PRInt32 *val, PRInt32 newval)
+{
+    TEST_THEN_SET(val, newval);
+}
+
+#include <signal.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#include <sys/lwp.h>
+#include <sys/procfs.h>
+#include <sys/syscall.h>
+
+
+THREAD_KEY_T threadid_key;
+THREAD_KEY_T cpuid_key;
+THREAD_KEY_T last_thread_key;
+static sigset_t set, oldset;
+
+void _MD_EarlyInit(void)
+{
+    THR_KEYCREATE(&threadid_key, NULL);
+    THR_KEYCREATE(&cpuid_key, NULL);
+    THR_KEYCREATE(&last_thread_key, NULL);
+    sigemptyset(&set);
+    sigaddset(&set, SIGALRM);
+}
+
+PRStatus _MD_CREATE_THREAD(PRThread *thread, 
+					void (*start)(void *), 
+					PRThreadPriority priority,
+					PRThreadScope scope, 
+					PRThreadState state, 
+					PRUint32 stackSize) 
+{
+	long flags;
+	
+    /* mask out SIGALRM for native thread creation */
+    thr_sigsetmask(SIG_BLOCK, &set, &oldset); 
+
+    flags = (state == PR_JOINABLE_THREAD ? THR_SUSPENDED/*|THR_NEW_LWP*/ 
+			   : THR_SUSPENDED|THR_DETACHED/*|THR_NEW_LWP*/);
+	if (_PR_IS_GCABLE_THREAD(thread) ||
+							(scope == PR_GLOBAL_BOUND_THREAD))
+		flags |= THR_BOUND;
+
+    if (thr_create(NULL, thread->stack->stackSize,
+                  (void *(*)(void *)) start, (void *) thread, 
+				  flags,
+                  &thread->md.handle)) {
+        thr_sigsetmask(SIG_SETMASK, &oldset, NULL); 
+	return PR_FAILURE;
+    }
+
+
+    /* When the thread starts running, then the lwpid is set to the right
+     * value. Until then we want to mark this as 'uninit' so that
+     * its register state is initialized properly for GC */
+
+    thread->md.lwpid = -1;
+    thr_sigsetmask(SIG_SETMASK, &oldset, NULL); 
+    _MD_NEW_SEM(&thread->md.waiter_sem, 0);
+
+	if ((scope == PR_GLOBAL_THREAD) || (scope == PR_GLOBAL_BOUND_THREAD)) {
+		thread->flags |= _PR_GLOBAL_SCOPE;
+    }
+
+    /* 
+    ** Set the thread priority.  This will also place the thread on 
+    ** the runQ.
+    **
+    ** Force PR_SetThreadPriority to set the priority by
+    ** setting thread->priority to 100.
+    */
+    {
+    int pri;
+    pri = thread->priority;
+    thread->priority = 100;
+    PR_SetThreadPriority( thread, pri );
+
+    PR_LOG(_pr_thread_lm, PR_LOG_MIN, 
+            ("(0X%x)[Start]: on to runq at priority %d",
+            thread, thread->priority));
+    }
+
+    /* Activate the thread */
+    if (thr_continue( thread->md.handle ) ) {
+	return PR_FAILURE;
+    }
+    return PR_SUCCESS;
+}
+
+void _MD_cleanup_thread(PRThread *thread)
+{
+    thread_t hdl;
+    PRMonitor *mon;
+
+    hdl = thread->md.handle;
+
+    /* 
+    ** First, suspend the thread (unless it's the active one)
+    ** Because we suspend it first, we don't have to use LOCK_SCHEDULER to
+    ** prevent both of us modifying the thread structure at the same time.
+    */
+    if ( thread != _PR_MD_CURRENT_THREAD() ) {
+        thr_suspend(hdl);
+    }
+    PR_LOG(_pr_thread_lm, PR_LOG_MIN,
+            ("(0X%x)[DestroyThread]\n", thread));
+
+    _MD_DESTROY_SEM(&thread->md.waiter_sem);
+}
+
+void _MD_SET_PRIORITY(_MDThread *md_thread, PRUintn newPri)
+{
+	if(thr_setprio((thread_t)md_thread->handle, newPri)) {
+		PR_LOG(_pr_thread_lm, PR_LOG_MIN,
+		   ("_PR_SetThreadPriority: can't set thread priority\n"));
+	}
+}
+
+void _MD_WAIT_CV(
+    struct _MDCVar *md_cv, struct _MDLock *md_lock, PRIntervalTime timeout)
+{
+    struct timespec tt;
+    PRUint32 msec;
+    int rv;
+    PRThread *me = _PR_MD_CURRENT_THREAD();
+
+    msec = PR_IntervalToMilliseconds(timeout);
+
+    GETTIME (&tt);
+
+    tt.tv_sec += msec / PR_MSEC_PER_SEC;
+    tt.tv_nsec += (msec % PR_MSEC_PER_SEC) * PR_NSEC_PER_MSEC;
+    /* Check for nsec overflow - otherwise we'll get an EINVAL */
+    if (tt.tv_nsec >= PR_NSEC_PER_SEC) {
+        tt.tv_sec++;
+        tt.tv_nsec -= PR_NSEC_PER_SEC;
+    }
+    me->md.sp = unixware_getsp();
+
+
+    /* XXX Solaris 2.5.x gives back EINTR occasionally for no reason
+     * hence ignore EINTR for now */
+
+    COND_TIMEDWAIT(&md_cv->cv, &md_lock->lock, &tt);
+}
+
+void _MD_lock(struct _MDLock *md_lock)
+{
+    mutex_lock(&md_lock->lock);
+}
+
+void _MD_unlock(struct _MDLock *md_lock)
+{
+    mutex_unlock(&((md_lock)->lock));
+}
+
+
+PRThread *_pr_current_thread_tls()
+{
+    PRThread *ret;
+
+    thr_getspecific(threadid_key, (void **)&ret);
+    return ret;
+}
+
+PRStatus
+_MD_WAIT(PRThread *thread, PRIntervalTime ticks)
+{
+        _MD_WAIT_SEM(&thread->md.waiter_sem);
+        return PR_SUCCESS;
+}
+
+PRStatus
+_MD_WAKEUP_WAITER(PRThread *thread)
+{
+	if (thread == NULL) {
+		return PR_SUCCESS;
+	}
+	_MD_POST_SEM(&thread->md.waiter_sem);
+	return PR_SUCCESS;
+}
+
+_PRCPU *_pr_current_cpu_tls()
+{
+    _PRCPU *ret;
+
+    thr_getspecific(cpuid_key, (void **)&ret);
+    return ret;
+}
+
+PRThread *_pr_last_thread_tls()
+{
+    PRThread *ret;
+
+    thr_getspecific(last_thread_key, (void **)&ret);
+    return ret;
+}
+
+_MDLock _pr_ioq_lock;
+
+void _MD_INIT_IO (void)
+{
+    _MD_NEW_LOCK(&_pr_ioq_lock);
+}
+
+PRStatus _MD_InitializeThread(PRThread *thread)
+{
+    if (!_PR_IS_NATIVE_THREAD(thread))
+        return;
+		/* prime the sp; substract 4 so we don't hit the assert that
+		 * curr sp > base_stack
+		 */
+    thread->md.sp = (uint_t) thread->stack->allocBase - sizeof(long);
+    thread->md.lwpid = _lwp_self();
+    thread->md.handle = THR_SELF();
+
+	/* all threads on Solaris are global threads from NSPR's perspective
+	 * since all of them are mapped to Solaris threads.
+	 */
+    thread->flags |= _PR_GLOBAL_SCOPE;
+
+ 	/* For primordial/attached thread, we don't create an underlying native thread.
+ 	 * So, _MD_CREATE_THREAD() does not get called.  We need to do initialization
+ 	 * like allocating thread's synchronization variables and set the underlying
+ 	 * native thread's priority.
+ 	 */
+	if (thread->flags & (_PR_PRIMORDIAL | _PR_ATTACHED)) {
+	    _MD_NEW_SEM(&thread->md.waiter_sem, 0);
+	    _MD_SET_PRIORITY(&(thread->md), thread->priority);
+	}
+	return PR_SUCCESS;
+}
+
+static sigset_t old_mask;	/* store away original gc thread sigmask */
+static int gcprio;		/* store away original gc thread priority */
+static lwpid_t *all_lwps=NULL;	/* list of lwps that we suspended */
+static int num_lwps ;
+static int suspendAllOn = 0;
+
+#define VALID_SP(sp, bottom, top)	\
+       (((uint_t)(sp)) > ((uint_t)(bottom)) && ((uint_t)(sp)) < ((uint_t)(top)))
+
+void unixware_preempt_off()
+{
+    sigset_t set;
+    (void)sigfillset(&set);
+    sigprocmask (SIG_SETMASK, &set, &old_mask);
+}
+
+void unixware_preempt_on()
+{
+    sigprocmask (SIG_SETMASK, &old_mask, NULL);      
+}
+
+void _MD_Begin_SuspendAll()
+{
+    unixware_preempt_off();
+
+    PR_LOG(_pr_gc_lm, PR_LOG_ALWAYS, ("Begin_SuspendAll\n"));
+    /* run at highest prio so I cannot be preempted */
+    thr_getprio(thr_self(), &gcprio);
+    thr_setprio(thr_self(), 0x7fffffff); 
+    suspendAllOn = 1;
+}
+
+void _MD_End_SuspendAll()
+{
+}
+
+void _MD_End_ResumeAll()
+{
+    PR_LOG(_pr_gc_lm, PR_LOG_ALWAYS, ("End_ResumeAll\n"));
+    thr_setprio(thr_self(), gcprio);
+    unixware_preempt_on();
+    suspendAllOn = 0;
+}
+
+void _MD_Suspend(PRThread *thr)
+{
+   int lwp_fd, result;
+   int lwp_main_proc_fd = 0;
+
+    thr_suspend(thr->md.handle);
+    if (!_PR_IS_GCABLE_THREAD(thr))
+      return;
+    /* XXX Primordial thread can't be bound to an lwp, hence there is no
+     * way we can assume that we can get the lwp status for primordial
+     * thread reliably. Hence we skip this for primordial thread, hoping
+     * that the SP is saved during lock and cond. wait. 
+     * XXX - Again this is concern only for java interpreter, not for the
+     * server, 'cause primordial thread in the server does not do java work
+     */
+    if (thr->flags & _PR_PRIMORDIAL)
+      return;
+
+    /* if the thread is not started yet then don't do anything */
+    if (!suspendAllOn || thr->md.lwpid == -1)
+      return;
+
+}
+void _MD_Resume(PRThread *thr)
+{
+   if (!_PR_IS_GCABLE_THREAD(thr) || !suspendAllOn){
+     /*XXX When the suspendAllOn is set, we will be trying to do lwp_suspend
+      * during that time we can't call any thread lib or libc calls. Hence
+      * make sure that no resume is requested for Non gcable thread
+      * during suspendAllOn */
+      PR_ASSERT(!suspendAllOn);
+      thr_continue(thr->md.handle);
+      return;
+   }
+   if (thr->md.lwpid == -1)
+     return;
+ 
+   if ( _lwp_continue(thr->md.lwpid) < 0) {
+      PR_ASSERT(0);  /* ARGH, we are hosed! */
+   }
+}
+
+
+PRWord *_MD_HomeGCRegisters(PRThread *t, int isCurrent, int *np)
+{
+    if (isCurrent) {
+	(void) getcontext(CONTEXT(t));	/* XXX tune me: set md_IRIX.c */
+    }
+    *np = NGREG;
+    if (t->md.lwpid == -1)
+      memset(&t->md.context.uc_mcontext.gregs[0], 0, NGREG * sizeof(PRWord));
+    return (PRWord*) &t->md.context.uc_mcontext.gregs[0];
+}
+
+int
+_pr_unixware_clock_gettime (struct timespec *tp)
+{
+    struct timeval tv;
+ 
+    gettimeofday(&tv, NULL);
+    tp->tv_sec = tv.tv_sec;
+    tp->tv_nsec = tv.tv_usec * 1000;
+    return 0;
+}
+
+
+#endif /* USE_SVR4_THREADS */