Quelle os_bsd.inline.hpp Sprache: C

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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* version 2 for more details (a copy is included in the LICENSE file that
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*
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#ifndef OS_BSD_OS_BSD_INLINE_HPP
#define OS_BSD_OS_BSD_INLINE_HPP

#include "os_bsd.hpp"

#include "runtime/os.hpp"
#include "os_posix.inline.hpp"

inline bool os::zero_page_read_protected() {
  return true;
}

inline bool os::uses_stack_guard_pages() {
  return true;
}

inline bool os::must_commit_stack_guard_pages() {
  assert(uses_stack_guard_pages(), "sanity check");
#if !defined(__FreeBSD__) || __FreeBSD__ < 5
  // Since FreeBSD 4 uses malloc() for allocating the thread stack
  // there is no need to do anything extra to allocate the guard pages
  return false;
#else
  // FreeBSD 5+ uses mmap MAP_STACK for allocating the thread stacks.
  // Must 'allocate' them or guard pages are ignored.
  return true;
#endif
}

// Bang the shadow pages if they need to be touched to be mapped.
inline void os::map_stack_shadow_pages(address sp) {
}

// stubbed-out trim-native support
inline bool os::can_trim_native_heap() { return false; }
inline bool os::trim_native_heap(os::size_change_t* rss_change) { return false; }

#endif // OS_BSD_OS_BSD_INLINE_HPP

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