49 lines
2.3 KiB
Diff
49 lines
2.3 KiB
Diff
diff --git a/src/cpu/zero/vm/stack_zero.hpp b/src/cpu/zero/vm/stack_zero.hpp
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--- openjdk/src/hotspot/cpu/zero/stack_zero.hpp
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+++ openjdk/src/hotspot/cpu/zero/stack_zero.hpp
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@@ -99,7 +99,7 @@
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int shadow_pages_size() const {
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return _shadow_pages_size;
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}
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- int abi_stack_available(Thread *thread) const;
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+ ssize_t abi_stack_available(Thread *thread) const;
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public:
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void overflow_check(int required_words, TRAPS);
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diff --git a/src/cpu/zero/vm/stack_zero.inline.hpp b/src/cpu/zero/vm/stack_zero.inline.hpp
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--- openjdk/src/hotspot/cpu/zero/stack_zero.inline.hpp
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+++ openjdk/src/hotspot/cpu/zero/stack_zero.inline.hpp
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@@ -47,12 +47,12 @@
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// This method returns the amount of ABI stack available for us
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// to use under normal circumstances. Note that the returned
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// value can be negative.
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-inline int ZeroStack::abi_stack_available(Thread *thread) const {
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+inline ssize_t ZeroStack::abi_stack_available(Thread *thread) const {
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guarantee(Thread::current() == thread, "should run in the same thread");
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- int stack_used = thread->stack_base() - (address) &stack_used
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+ ssize_t stack_used = thread->stack_base() - (address) &stack_used
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+ (JavaThread::stack_guard_zone_size() + JavaThread::stack_shadow_zone_size());
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- int stack_free = thread->stack_size() - stack_used;
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+ ssize_t stack_free = thread->stack_size() - stack_used;
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return stack_free;
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}
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#endif // CPU_ZERO_VM_STACK_ZERO_INLINE_HPP
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diff --git a/src/os/linux/vm/os_linux.cpp b/src/os/linux/vm/os_linux.cpp
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--- openjdk/src/hotspot/os/posix/os_posix.cpp
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+++ openjdk/src/hotspot/os/posix/os_posix.cpp
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@@ -4791,6 +4791,13 @@
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_java_thread_min_stack_allowed = align_up(_java_thread_min_stack_allowed, vm_page_size());
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_java_thread_min_stack_allowed = MAX2(_java_thread_min_stack_allowed, os_min_stack_allowed);
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+#ifdef ZERO
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+ // If this is Zero, allow at the very minimum one page each for the
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+ // Zero stack and the native stack. This won't make any difference
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+ // for 4k pages, but is significant for large pages.
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+ _java_thread_min_stack_allowed = MAX2(_java_thread_min_stack_allowed,
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+ align_size_up((size_t)(JavaThread::stack_guard_zone_size()+JavaThread::stack_shadow_zone_size()+2) * vm_page_size(), vm_page_size());
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+#endif
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size_t stack_size_in_bytes = ThreadStackSize * K;
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if (stack_size_in_bytes != 0 &&
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