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8253717: Relocate stack overflow code out of thread.hpp/cpp

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Reviewed-by: rehn, dcubed, dholmes, stuefe
This commit is contained in:
Coleen Phillimore 2020-10-08 11:24:27 +00:00
parent 782d45bdec
commit 6bc493188b
50 changed files with 774 additions and 662 deletions
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14
src/hotspot/os/linux/os_linux.cpp
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@ -935,9 +935,10 @@ bool os::create_attached_thread(JavaThread* thread) {
// enabling yellow zone first will crash JVM on SuSE Linux), so there
// is no gap between the last two virtual memory regions.
address addr = thread->stack_reserved_zone_base();
StackOverflow* overflow_state = thread->stack_overflow_state();
address addr = overflow_state->stack_reserved_zone_base();
assert(addr != NULL, "initialization problem?");
assert(thread->stack_available(addr) > 0, "stack guard should not be enabled");
assert(overflow_state->stack_available(addr) > 0, "stack guard should not be enabled");
osthread->set_expanding_stack();
os::Linux::manually_expand_stack(thread, addr);
@ -1931,9 +1932,10 @@ void * os::Linux::dll_load_in_vmthread(const char *filename, char *ebuf,
if (!_stack_is_executable) {
for (JavaThreadIteratorWithHandle jtiwh; JavaThread *jt = jtiwh.next(); ) {
if (!jt->stack_guard_zone_unused() && // Stack not yet fully initialized
jt->stack_guards_enabled()) { // No pending stack overflow exceptions
if (!os::guard_memory((char *)jt->stack_end(), jt->stack_guard_zone_size())) {
StackOverflow* overflow_state = jt->stack_overflow_state();
if (!overflow_state->stack_guard_zone_unused() && // Stack not yet fully initialized
overflow_state->stack_guards_enabled()) { // No pending stack overflow exceptions
if (!os::guard_memory((char *)jt->stack_end(), overflow_state->stack_guard_zone_size())) {
warning("Attempt to reguard stack yellow zone failed.");
}
}
@ -5314,7 +5316,7 @@ bool os::start_debugging(char *buf, int buflen) {
// | |\
// | HotSpot Guard Pages | - red, yellow and reserved pages
// | |/
// +------------------------+ JavaThread::stack_reserved_zone_base()
// +------------------------+ StackOverflow::stack_reserved_zone_base()
// | |\
// | Normal Stack | -
// | |/