Mercurial > hg > truffle
comparison src/os/bsd/vm/os_bsd.cpp @ 8854:754c24457b20
7112912: Message "Error occurred during initialization of VM" on boxes with lots of RAM
Summary: Ergonomics now also takes available virtual memory into account when deciding for a heap size. The helper method to determine the maximum allocatable memory block now uses the appropriate OS specific calls to retrieve available virtual memory for the java process. In 32 bit environments this method now also searches for the maximum actually reservable amount of memory. Merge previously separate implementations for Linux/BSD/Solaris into a single method.
Reviewed-by: jmasa, tamao
| author | tschatzl |
|---|---|
| date | Wed, 27 Mar 2013 19:21:18 +0100 |
| parents | 252ad8d5f22b |
| children | b9a918201d47 8be1318fbe77 |
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| 8853:2e093b564241 | 8854:754c24457b20 |
|---|---|
| 163 return physical_memory() >> 2; | 163 return physical_memory() >> 2; |
| 164 } | 164 } |
| 165 | 165 |
| 166 julong os::physical_memory() { | 166 julong os::physical_memory() { |
| 167 return Bsd::physical_memory(); | 167 return Bsd::physical_memory(); |
| 168 } | |
| 169 | |
| 170 julong os::allocatable_physical_memory(julong size) { | |
| 171 #ifdef _LP64 | |
| 172 return size; | |
| 173 #else | |
| 174 julong result = MIN2(size, (julong)3800*M); | |
| 175 if (!is_allocatable(result)) { | |
| 176 // See comments under solaris for alignment considerations | |
| 177 julong reasonable_size = (julong)2*G - 2 * os::vm_page_size(); | |
| 178 result = MIN2(size, reasonable_size); | |
| 179 } | |
| 180 return result; | |
| 181 #endif // _LP64 | |
| 182 } | 168 } |
| 183 | 169 |
| 184 //////////////////////////////////////////////////////////////////////////////// | 170 //////////////////////////////////////////////////////////////////////////////// |
| 185 // environment support | 171 // environment support |
| 186 | 172 |