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comparison src/share/vm/runtime/atomic.cpp @ 113:ba764ed4b6f2

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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
author coleenp
date Sun, 13 Apr 2008 17:43:42 -0400
parents a61af66fc99e
children d1605aabd0a1
comparison
equal deleted inserted replaced
110:a49a647afe9a 113:ba764ed4b6f2
42 new_val = cur; 42 new_val = cur;
43 new_val_as_bytes[offset] = exchange_value; 43 new_val_as_bytes[offset] = exchange_value;
44 } 44 }
45 return cur_as_bytes[offset]; 45 return cur_as_bytes[offset];
46 } 46 }
47
48 unsigned Atomic::xchg(unsigned int exchange_value, volatile unsigned int* dest) {
49 assert(sizeof(unsigned int) == sizeof(jint), "more work to do");
50 return (unsigned int)Atomic::xchg((jint)exchange_value, (volatile jint*)dest);
51 }
52
53 unsigned Atomic::cmpxchg(unsigned int exchange_value,
54 volatile unsigned int* dest, unsigned int compare_value) {
55 assert(sizeof(unsigned int) == sizeof(jint), "more work to do");
56 return (unsigned int)Atomic::cmpxchg((jint)exchange_value, (volatile jint*)dest,
57 (jint)compare_value);
58 }