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7112912: Message "Error occurred during initialization of VM" on boxes with lots of RAM

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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
This commit is contained in:
Thomas Schatzl 2013-03-27 19:21:18 +01:00
parent 89120e7827
commit bb5bd507d7
9 changed files with 92 additions and 57 deletions
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14
hotspot/src/os/bsd/vm/os_bsd.cpp
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@ -167,20 +167,6 @@ julong os::physical_memory() {
return Bsd::physical_memory();
}
julong os::allocatable_physical_memory(julong size) {
#ifdef _LP64
return size;
#else
julong result = MIN2(size, (julong)3800*M);
if (!is_allocatable(result)) {
// See comments under solaris for alignment considerations
julong reasonable_size = (julong)2*G - 2 * os::vm_page_size();
result = MIN2(size, reasonable_size);
}
return result;
#endif // _LP64
}
////////////////////////////////////////////////////////////////////////////////
// environment support