1746 local_sem_wait();
1747
1748 // were we externally suspended while we were waiting?
1749 threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
1750 if (threadIsSuspended) {
1751 //
1752 // The semaphore has been incremented, but while we were waiting
1753 // another thread suspended us. We don't want to continue running
1754 // while suspended because that would surprise the thread that
1755 // suspended us.
1756 //
1757
1758 local_sem_post();
1759
1760 thread->java_suspend_self();
1761 }
1762 } while (threadIsSuspended);
1763 }
1764 }
1765
1766 int os::signal_lookup() {
1767 return check_pending_signals(false);
1768 }
1769
1770 int os::signal_wait() {
1771 return check_pending_signals(true);
1772 }
1773
1774 ////////////////////////////////////////////////////////////////////////////////
1775 // Virtual Memory
1776
1777 // We need to keep small simple bookkeeping for os::reserve_memory and friends.
1778
1779 #define VMEM_MAPPED 1
1780 #define VMEM_SHMATED 2
1781
1782 struct vmembk_t {
1783 int type; // 1 - mmap, 2 - shmat
1784 char* addr;
1785 size_t size; // Real size, may be larger than usersize.
1786 size_t pagesize; // page size of area
1787 vmembk_t* next;
1788
1789 bool contains_addr(char* p) const {
|
1746 local_sem_wait();
1747
1748 // were we externally suspended while we were waiting?
1749 threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
1750 if (threadIsSuspended) {
1751 //
1752 // The semaphore has been incremented, but while we were waiting
1753 // another thread suspended us. We don't want to continue running
1754 // while suspended because that would surprise the thread that
1755 // suspended us.
1756 //
1757
1758 local_sem_post();
1759
1760 thread->java_suspend_self();
1761 }
1762 } while (threadIsSuspended);
1763 }
1764 }
1765
1766 int os::signal_wait() {
1767 return check_pending_signals(true);
1768 }
1769
1770 ////////////////////////////////////////////////////////////////////////////////
1771 // Virtual Memory
1772
1773 // We need to keep small simple bookkeeping for os::reserve_memory and friends.
1774
1775 #define VMEM_MAPPED 1
1776 #define VMEM_SHMATED 2
1777
1778 struct vmembk_t {
1779 int type; // 1 - mmap, 2 - shmat
1780 char* addr;
1781 size_t size; // Real size, may be larger than usersize.
1782 size_t pagesize; // page size of area
1783 vmembk_t* next;
1784
1785 bool contains_addr(char* p) const {
|