Mercurial > hg > truffle
comparison src/share/vm/runtime/os.hpp @ 642:660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
Summary: Use zero based compressed oops if java heap is below 32gb and unscaled compressed oops if java heap is below 4gb.
Reviewed-by: never, twisti, jcoomes, coleenp
author | kvn |
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date | Thu, 12 Mar 2009 10:37:46 -0700 |
parents | 773234c55e8c |
children | bd441136a5ce |
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641:6af0a709d52b | 642:660978a2a31a |
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241 static bool get_page_info(char *start, page_info* info); | 241 static bool get_page_info(char *start, page_info* info); |
242 static char* scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found); | 242 static char* scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found); |
243 | 243 |
244 static char* non_memory_address_word(); | 244 static char* non_memory_address_word(); |
245 // reserve, commit and pin the entire memory region | 245 // reserve, commit and pin the entire memory region |
246 static char* reserve_memory_special(size_t size); | 246 static char* reserve_memory_special(size_t size, char* addr = NULL); |
247 static bool release_memory_special(char* addr, size_t bytes); | 247 static bool release_memory_special(char* addr, size_t bytes); |
248 static bool large_page_init(); | 248 static bool large_page_init(); |
249 static size_t large_page_size(); | 249 static size_t large_page_size(); |
250 static bool can_commit_large_page_memory(); | 250 static bool can_commit_large_page_memory(); |
251 static bool can_execute_large_page_memory(); | 251 static bool can_execute_large_page_memory(); |