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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes

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Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv

Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
This commit is contained in:
Coleen Phillimore 2008-04-13 17:43:42 -04:00
parent 680ecf1611
commit 4a831d45f0
273 changed files with 6585 additions and 2993 deletions
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12
hotspot/src/share/vm/runtime/atomic.cpp
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@ -44,3 +44,15 @@ jbyte Atomic::cmpxchg(jbyte exchange_value, volatile jbyte* dest, jbyte compare_
}
return cur_as_bytes[offset];
}
unsigned Atomic::xchg(unsigned int exchange_value, volatile unsigned int* dest) {
assert(sizeof(unsigned int) == sizeof(jint), "more work to do");
return (unsigned int)Atomic::xchg((jint)exchange_value, (volatile jint*)dest);
}
unsigned Atomic::cmpxchg(unsigned int exchange_value,
volatile unsigned int* dest, unsigned int compare_value) {
assert(sizeof(unsigned int) == sizeof(jint), "more work to do");
return (unsigned int)Atomic::cmpxchg((jint)exchange_value, (volatile jint*)dest,
(jint)compare_value);
}