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-rw-r--r--nsprpub/pr/src/md/unix/pthreads_user.c464
1 files changed, 464 insertions, 0 deletions
diff --git a/nsprpub/pr/src/md/unix/pthreads_user.c b/nsprpub/pr/src/md/unix/pthreads_user.c
new file mode 100644
index 0000000000..525c1576ff
--- /dev/null
+++ b/nsprpub/pr/src/md/unix/pthreads_user.c
@@ -0,0 +1,464 @@
+/* -*- 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"
+#include <sys/types.h>
+#include <unistd.h>
+#include <signal.h>
+#include <pthread.h>
+
+
+sigset_t ints_off;
+pthread_mutex_t _pr_heapLock;
+pthread_key_t current_thread_key;
+pthread_key_t current_cpu_key;
+pthread_key_t last_thread_key;
+pthread_key_t intsoff_key;
+
+
+PRInt32 _pr_md_pthreads_created, _pr_md_pthreads_failed;
+PRInt32 _pr_md_pthreads = 1;
+
+void _MD_EarlyInit(void)
+{
+ extern PRInt32 _nspr_noclock;
+
+ if (pthread_key_create(&current_thread_key, NULL) != 0) {
+ perror("pthread_key_create failed");
+ exit(1);
+ }
+ if (pthread_key_create(&current_cpu_key, NULL) != 0) {
+ perror("pthread_key_create failed");
+ exit(1);
+ }
+ if (pthread_key_create(&last_thread_key, NULL) != 0) {
+ perror("pthread_key_create failed");
+ exit(1);
+ }
+ if (pthread_key_create(&intsoff_key, NULL) != 0) {
+ perror("pthread_key_create failed");
+ exit(1);
+ }
+
+ sigemptyset(&ints_off);
+ sigaddset(&ints_off, SIGALRM);
+ sigaddset(&ints_off, SIGIO);
+ sigaddset(&ints_off, SIGCLD);
+
+ /*
+ * disable clock interrupts
+ */
+ _nspr_noclock = 1;
+
+}
+
+void _MD_InitLocks()
+{
+ if (pthread_mutex_init(&_pr_heapLock, NULL) != 0) {
+ perror("pthread_mutex_init failed");
+ exit(1);
+ }
+}
+
+PR_IMPLEMENT(void) _MD_FREE_LOCK(struct _MDLock *lockp)
+{
+ PRIntn _is;
+ PRThread *me = _PR_MD_CURRENT_THREAD();
+
+ if (me && !_PR_IS_NATIVE_THREAD(me)) {
+ _PR_INTSOFF(_is);
+ }
+ pthread_mutex_destroy(&lockp->mutex);
+ if (me && !_PR_IS_NATIVE_THREAD(me)) {
+ _PR_FAST_INTSON(_is);
+ }
+}
+
+
+
+PR_IMPLEMENT(PRStatus) _MD_NEW_LOCK(struct _MDLock *lockp)
+{
+ PRStatus rv;
+ PRIntn is;
+ PRThread *me = _PR_MD_CURRENT_THREAD();
+
+ if (me && !_PR_IS_NATIVE_THREAD(me)) {
+ _PR_INTSOFF(is);
+ }
+ rv = pthread_mutex_init(&lockp->mutex, NULL);
+ if (me && !_PR_IS_NATIVE_THREAD(me)) {
+ _PR_FAST_INTSON(is);
+ }
+ return (rv == 0) ? PR_SUCCESS : PR_FAILURE;
+}
+
+
+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);
+}
+
+PR_IMPLEMENT(void)
+_MD_SetPriority(_MDThread *thread, PRThreadPriority newPri)
+{
+ /*
+ * XXX - to be implemented
+ */
+ return;
+}
+
+PR_IMPLEMENT(PRStatus) _MD_InitThread(struct PRThread *thread)
+{
+ struct sigaction sigact;
+
+ if (thread->flags & _PR_GLOBAL_SCOPE) {
+ thread->md.pthread = pthread_self();
+#if 0
+ /*
+ * set up SIGUSR1 handler; this is used to save state
+ * during PR_SuspendAll
+ */
+ sigact.sa_handler = save_context_and_block;
+ sigact.sa_flags = SA_RESTART;
+ /*
+ * Must mask clock interrupts
+ */
+ sigact.sa_mask = timer_set;
+ sigaction(SIGUSR1, &sigact, 0);
+#endif
+ }
+
+ return PR_SUCCESS;
+}
+
+PR_IMPLEMENT(void) _MD_ExitThread(struct PRThread *thread)
+{
+ if (thread->flags & _PR_GLOBAL_SCOPE) {
+ _MD_CLEAN_THREAD(thread);
+ _MD_SET_CURRENT_THREAD(NULL);
+ }
+}
+
+PR_IMPLEMENT(void) _MD_CleanThread(struct PRThread *thread)
+{
+ if (thread->flags & _PR_GLOBAL_SCOPE) {
+ pthread_mutex_destroy(&thread->md.pthread_mutex);
+ pthread_cond_destroy(&thread->md.pthread_cond);
+ }
+}
+
+PR_IMPLEMENT(void) _MD_SuspendThread(struct PRThread *thread)
+{
+ PRInt32 rv;
+
+ PR_ASSERT((thread->flags & _PR_GLOBAL_SCOPE) &&
+ _PR_IS_GCABLE_THREAD(thread));
+#if 0
+ thread->md.suspending_id = getpid();
+ rv = kill(thread->md.id, SIGUSR1);
+ PR_ASSERT(rv == 0);
+ /*
+ * now, block the current thread/cpu until woken up by the suspended
+ * thread from it's SIGUSR1 signal handler
+ */
+ blockproc(getpid());
+#endif
+}
+
+PR_IMPLEMENT(void) _MD_ResumeThread(struct PRThread *thread)
+{
+ PRInt32 rv;
+
+ PR_ASSERT((thread->flags & _PR_GLOBAL_SCOPE) &&
+ _PR_IS_GCABLE_THREAD(thread));
+#if 0
+ rv = unblockproc(thread->md.id);
+#endif
+}
+
+PR_IMPLEMENT(void) _MD_SuspendCPU(struct _PRCPU *thread)
+{
+ PRInt32 rv;
+
+#if 0
+ cpu->md.suspending_id = getpid();
+ rv = kill(cpu->md.id, SIGUSR1);
+ PR_ASSERT(rv == 0);
+ /*
+ * now, block the current thread/cpu until woken up by the suspended
+ * thread from it's SIGUSR1 signal handler
+ */
+ blockproc(getpid());
+#endif
+}
+
+PR_IMPLEMENT(void) _MD_ResumeCPU(struct _PRCPU *thread)
+{
+#if 0
+ unblockproc(cpu->md.id);
+#endif
+}
+
+
+#define PT_NANOPERMICRO 1000UL
+#define PT_BILLION 1000000000UL
+
+PR_IMPLEMENT(PRStatus)
+_pt_wait(PRThread *thread, PRIntervalTime timeout)
+{
+ int rv;
+ struct timeval now;
+ struct timespec tmo;
+ PRUint32 ticks = PR_TicksPerSecond();
+
+
+ if (timeout != PR_INTERVAL_NO_TIMEOUT) {
+ tmo.tv_sec = timeout / ticks;
+ tmo.tv_nsec = timeout - (tmo.tv_sec * ticks);
+ tmo.tv_nsec = PR_IntervalToMicroseconds(PT_NANOPERMICRO *
+ tmo.tv_nsec);
+
+ /* pthreads wants this in absolute time, off we go ... */
+ (void)GETTIMEOFDAY(&now);
+ /* that one's usecs, this one's nsecs - grrrr! */
+ tmo.tv_sec += now.tv_sec;
+ tmo.tv_nsec += (PT_NANOPERMICRO * now.tv_usec);
+ tmo.tv_sec += tmo.tv_nsec / PT_BILLION;
+ tmo.tv_nsec %= PT_BILLION;
+ }
+
+ pthread_mutex_lock(&thread->md.pthread_mutex);
+ thread->md.wait--;
+ if (thread->md.wait < 0) {
+ if (timeout != PR_INTERVAL_NO_TIMEOUT) {
+ rv = pthread_cond_timedwait(&thread->md.pthread_cond,
+ &thread->md.pthread_mutex, &tmo);
+ }
+ else
+ rv = pthread_cond_wait(&thread->md.pthread_cond,
+ &thread->md.pthread_mutex);
+ if (rv != 0) {
+ thread->md.wait++;
+ }
+ } else {
+ rv = 0;
+ }
+ pthread_mutex_unlock(&thread->md.pthread_mutex);
+
+ return (rv == 0) ? PR_SUCCESS : PR_FAILURE;
+}
+
+PR_IMPLEMENT(PRStatus)
+_MD_wait(PRThread *thread, PRIntervalTime ticks)
+{
+ if ( thread->flags & _PR_GLOBAL_SCOPE ) {
+ _MD_CHECK_FOR_EXIT();
+ if (_pt_wait(thread, ticks) == PR_FAILURE) {
+ _MD_CHECK_FOR_EXIT();
+ /*
+ * wait timed out
+ */
+ _PR_THREAD_LOCK(thread);
+ if (thread->wait.cvar) {
+ /*
+ * The thread will remove itself from the waitQ
+ * of the cvar in _PR_WaitCondVar
+ */
+ thread->wait.cvar = NULL;
+ thread->state = _PR_RUNNING;
+ _PR_THREAD_UNLOCK(thread);
+ } else {
+ _pt_wait(thread, PR_INTERVAL_NO_TIMEOUT);
+ _PR_THREAD_UNLOCK(thread);
+ }
+ }
+ } else {
+ _PR_MD_SWITCH_CONTEXT(thread);
+ }
+ return PR_SUCCESS;
+}
+
+PR_IMPLEMENT(PRStatus)
+_MD_WakeupWaiter(PRThread *thread)
+{
+ PRThread *me = _PR_MD_CURRENT_THREAD();
+ PRInt32 pid, rv;
+ PRIntn is;
+
+ PR_ASSERT(_pr_md_idle_cpus >= 0);
+ if (thread == NULL) {
+ if (_pr_md_idle_cpus) {
+ _MD_Wakeup_CPUs();
+ }
+ } else if (!_PR_IS_NATIVE_THREAD(thread)) {
+ /*
+ * If the thread is on my cpu's runq there is no need to
+ * wakeup any cpus
+ */
+ if (!_PR_IS_NATIVE_THREAD(me)) {
+ if (me->cpu != thread->cpu) {
+ if (_pr_md_idle_cpus) {
+ _MD_Wakeup_CPUs();
+ }
+ }
+ } else {
+ if (_pr_md_idle_cpus) {
+ _MD_Wakeup_CPUs();
+ }
+ }
+ } else {
+ PR_ASSERT(_PR_IS_NATIVE_THREAD(thread));
+ if (!_PR_IS_NATIVE_THREAD(me)) {
+ _PR_INTSOFF(is);
+ }
+
+ pthread_mutex_lock(&thread->md.pthread_mutex);
+ thread->md.wait++;
+ rv = pthread_cond_signal(&thread->md.pthread_cond);
+ PR_ASSERT(rv == 0);
+ pthread_mutex_unlock(&thread->md.pthread_mutex);
+
+ if (!_PR_IS_NATIVE_THREAD(me)) {
+ _PR_FAST_INTSON(is);
+ }
+ }
+ return PR_SUCCESS;
+}
+
+/* These functions should not be called for AIX */
+PR_IMPLEMENT(void)
+_MD_YIELD(void)
+{
+ PR_NOT_REACHED("_MD_YIELD should not be called for AIX.");
+}
+
+PR_IMPLEMENT(PRStatus)
+_MD_CreateThread(
+ PRThread *thread,
+ void (*start) (void *),
+ PRThreadPriority priority,
+ PRThreadScope scope,
+ PRThreadState state,
+ PRUint32 stackSize)
+{
+ PRIntn is;
+ int rv;
+ PRThread *me = _PR_MD_CURRENT_THREAD();
+ pthread_attr_t attr;
+
+ if (!_PR_IS_NATIVE_THREAD(me)) {
+ _PR_INTSOFF(is);
+ }
+
+ if (pthread_mutex_init(&thread->md.pthread_mutex, NULL) != 0) {
+ if (!_PR_IS_NATIVE_THREAD(me)) {
+ _PR_FAST_INTSON(is);
+ }
+ return PR_FAILURE;
+ }
+
+ if (pthread_cond_init(&thread->md.pthread_cond, NULL) != 0) {
+ pthread_mutex_destroy(&thread->md.pthread_mutex);
+ if (!_PR_IS_NATIVE_THREAD(me)) {
+ _PR_FAST_INTSON(is);
+ }
+ return PR_FAILURE;
+ }
+ thread->flags |= _PR_GLOBAL_SCOPE;
+
+ pthread_attr_init(&attr); /* initialize attr with default attributes */
+ if (pthread_attr_setstacksize(&attr, (size_t) stackSize) != 0) {
+ pthread_mutex_destroy(&thread->md.pthread_mutex);
+ pthread_cond_destroy(&thread->md.pthread_cond);
+ pthread_attr_destroy(&attr);
+ if (!_PR_IS_NATIVE_THREAD(me)) {
+ _PR_FAST_INTSON(is);
+ }
+ return PR_FAILURE;
+ }
+
+ thread->md.wait = 0;
+ rv = pthread_create(&thread->md.pthread, &attr, start, (void *)thread);
+ if (0 == rv) {
+ _MD_ATOMIC_INCREMENT(&_pr_md_pthreads_created);
+ _MD_ATOMIC_INCREMENT(&_pr_md_pthreads);
+ if (!_PR_IS_NATIVE_THREAD(me)) {
+ _PR_FAST_INTSON(is);
+ }
+ return PR_SUCCESS;
+ } else {
+ pthread_mutex_destroy(&thread->md.pthread_mutex);
+ pthread_cond_destroy(&thread->md.pthread_cond);
+ pthread_attr_destroy(&attr);
+ _MD_ATOMIC_INCREMENT(&_pr_md_pthreads_failed);
+ if (!_PR_IS_NATIVE_THREAD(me)) {
+ _PR_FAST_INTSON(is);
+ }
+ PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, rv);
+ return PR_FAILURE;
+ }
+}
+
+PR_IMPLEMENT(void)
+_MD_InitRunningCPU(struct _PRCPU *cpu)
+{
+ extern int _pr_md_pipefd[2];
+
+ _MD_unix_init_running_cpu(cpu);
+ cpu->md.pthread = pthread_self();
+ if (_pr_md_pipefd[0] >= 0) {
+ _PR_IOQ_MAX_OSFD(cpu) = _pr_md_pipefd[0];
+#ifndef _PR_USE_POLL
+ FD_SET(_pr_md_pipefd[0], &_PR_FD_READ_SET(cpu));
+#endif
+ }
+}
+
+
+void
+_MD_CleanupBeforeExit(void)
+{
+#if 0
+ extern PRInt32 _pr_cpus_exit;
+
+ _pr_irix_exit_now = 1;
+ if (_pr_numCPU > 1) {
+ /*
+ * Set a global flag, and wakeup all cpus which will notice the flag
+ * and exit.
+ */
+ _pr_cpus_exit = getpid();
+ _MD_Wakeup_CPUs();
+ while(_pr_numCPU > 1) {
+ _PR_WAIT_SEM(_pr_irix_exit_sem);
+ _pr_numCPU--;
+ }
+ }
+ /*
+ * cause global threads on the recycle list to exit
+ */
+ _PR_DEADQ_LOCK;
+ if (_PR_NUM_DEADNATIVE != 0) {
+ PRThread *thread;
+ PRCList *ptr;
+
+ ptr = _PR_DEADNATIVEQ.next;
+ while( ptr != &_PR_DEADNATIVEQ ) {
+ thread = _PR_THREAD_PTR(ptr);
+ _MD_CVAR_POST_SEM(thread);
+ ptr = ptr->next;
+ }
+ }
+ _PR_DEADQ_UNLOCK;
+ while(_PR_NUM_DEADNATIVE > 1) {
+ _PR_WAIT_SEM(_pr_irix_exit_sem);
+ _PR_DEC_DEADNATIVE;
+ }
+#endif
+}
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