1729
1730 #ifndef SOLARIS
1731 int status;
1732 if (_pthread_condattr_setclock != NULL && _clock_gettime != NULL) {
1733 if ((status = _pthread_condattr_setclock(_condAttr, CLOCK_MONOTONIC)) != 0) {
1734 if (status == EINVAL) {
1735 _use_clock_monotonic_condattr = false;
1736 warning("Unable to use monotonic clock with relative timed-waits" \
1737 " - changes to the time-of-day clock may have adverse affects");
1738 } else {
1739 fatal("pthread_condattr_setclock: %s", os::strerror(status));
1740 }
1741 } else {
1742 _use_clock_monotonic_condattr = true;
1743 }
1744 }
1745 #endif // !SOLARIS
1746
1747 }
1748
1749 void os::Posix::init_2(void) {
1750 #ifndef SOLARIS
1751 log_info(os)("Use of CLOCK_MONOTONIC is%s supported",
1752 (_clock_gettime != NULL ? "" : " not"));
1753 log_info(os)("Use of pthread_condattr_setclock is%s supported",
1754 (_pthread_condattr_setclock != NULL ? "" : " not"));
1755 log_info(os)("Relative timed-wait using pthread_cond_timedwait is associated with %s",
1756 _use_clock_monotonic_condattr ? "CLOCK_MONOTONIC" : "the default clock");
1757 #endif // !SOLARIS
1758 }
1759
1760 #else // !SUPPORTS_CLOCK_MONOTONIC
1761
1762 void os::Posix::init(void) {
1763 pthread_init_common();
1764 }
1765
1766 void os::Posix::init_2(void) {
1767 #ifndef SOLARIS
1768 log_info(os)("Use of CLOCK_MONOTONIC is not supported");
1769 log_info(os)("Use of pthread_condattr_setclock is not supported");
1770 log_info(os)("Relative timed-wait using pthread_cond_timedwait is associated with the default clock");
1771 #endif // !SOLARIS
1772 }
1773
1774 #endif // SUPPORTS_CLOCK_MONOTONIC
1775
1776 // Utility to convert the given timeout to an absolute timespec
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1729
1730 #ifndef SOLARIS
1731 int status;
1732 if (_pthread_condattr_setclock != NULL && _clock_gettime != NULL) {
1733 if ((status = _pthread_condattr_setclock(_condAttr, CLOCK_MONOTONIC)) != 0) {
1734 if (status == EINVAL) {
1735 _use_clock_monotonic_condattr = false;
1736 warning("Unable to use monotonic clock with relative timed-waits" \
1737 " - changes to the time-of-day clock may have adverse affects");
1738 } else {
1739 fatal("pthread_condattr_setclock: %s", os::strerror(status));
1740 }
1741 } else {
1742 _use_clock_monotonic_condattr = true;
1743 }
1744 }
1745 #endif // !SOLARIS
1746
1747 }
1748
1749 #ifndef SOLARIS
1750 sigset_t sigs;
1751 struct sigaction sigact[NSIG];
1752
1753 struct sigaction* os::Posix::get_preinstalled_handler(int sig) {
1754 if (sigismember(&sigs, sig)) {
1755 return &sigact[sig];
1756 }
1757 return NULL;
1758 }
1759
1760 void os::Posix::save_preinstalled_handler(int sig, struct sigaction& oldAct) {
1761 assert(sig > 0 && sig < NSIG, "vm signal out of expected range");
1762 sigact[sig] = oldAct;
1763 sigaddset(&sigs, sig);
1764 }
1765 #else
1766 static int *sigs = NULL;
1767 static struct sigaction *sigact = NULL;
1768 static int Maxsignum = 0;
1769
1770 struct sigaction* os::Posix::get_preinstalled_handler(int sig) {
1771 assert((sigact != (struct sigaction *)NULL) &&
1772 (sigs != (int *)NULL), "signals not yet initialized");
1773 if (sigs[sig] != 0) {
1774 return &sigact[sig];
1775 }
1776 return NULL;
1777 }
1778
1779 void os::Posix::save_preinstalled_handler(int sig, struct sigaction& oldAct) {
1780 assert(sig > 0 && sig <= Maxsignum, "vm signal out of expected range");
1781 assert((sigact != (struct sigaction *)NULL) &&
1782 (sigs != (int *)NULL), "signals not yet initialized");
1783 sigact[sig] = oldAct;
1784 sigs[sig] = 1;
1785 }
1786 #endif
1787
1788 void os::Posix::init_2(void) {
1789 #ifndef SOLARIS
1790 log_info(os)("Use of CLOCK_MONOTONIC is%s supported",
1791 (_clock_gettime != NULL ? "" : " not"));
1792 log_info(os)("Use of pthread_condattr_setclock is%s supported",
1793 (_pthread_condattr_setclock != NULL ? "" : " not"));
1794 log_info(os)("Relative timed-wait using pthread_cond_timedwait is associated with %s",
1795 _use_clock_monotonic_condattr ? "CLOCK_MONOTONIC" : "the default clock");
1796 sigemptyset(&sigs);
1797 #else
1798 Maxsignum = SIGRTMAX;
1799 if (UseSignalChaining) {
1800 sigact = (struct sigaction *)malloc(sizeof(struct sigaction)
1801 * (Maxsignum + 1), mtInternal);
1802 memset(sigact, 0, (sizeof(struct sigaction) * (Maxsignum + 1)));
1803 sigs = (int *)os::malloc(sizeof(int) * (Maxsignum + 1), mtInternal);
1804 memset(sigs, 0, (sizeof(int) * (Maxsignum + 1)));
1805 }
1806 #endif // !SOLARIS
1807 }
1808
1809 #else // !SUPPORTS_CLOCK_MONOTONIC
1810
1811 void os::Posix::init(void) {
1812 pthread_init_common();
1813 }
1814
1815 void os::Posix::init_2(void) {
1816 #ifndef SOLARIS
1817 log_info(os)("Use of CLOCK_MONOTONIC is not supported");
1818 log_info(os)("Use of pthread_condattr_setclock is not supported");
1819 log_info(os)("Relative timed-wait using pthread_cond_timedwait is associated with the default clock");
1820 #endif // !SOLARIS
1821 }
1822
1823 #endif // SUPPORTS_CLOCK_MONOTONIC
1824
1825 // Utility to convert the given timeout to an absolute timespec
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