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src/hotspot/share/runtime/threadHeapSampler.cpp
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rev 50607 : 8205172: 32 bit build broken
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*** 45,55 ****
// This is the lrand64 generator.
static uint64_t next_random(uint64_t rnd) {
const uint64_t PrngMult = 0x5DEECE66DLL;
const uint64_t PrngAdd = 0xB;
const uint64_t PrngModPower = 48;
! const uint64_t PrngModMask = right_n_bits(PrngModPower);
//assert(IS_SAFE_SIZE_MUL(PrngMult, rnd), "Overflow on multiplication.");
//assert(IS_SAFE_SIZE_ADD(PrngMult * rnd, PrngAdd), "Overflow on addition.");
return (PrngMult * rnd + PrngAdd) & PrngModMask;
}
--- 45,55 ----
// This is the lrand64 generator.
static uint64_t next_random(uint64_t rnd) {
const uint64_t PrngMult = 0x5DEECE66DLL;
const uint64_t PrngAdd = 0xB;
const uint64_t PrngModPower = 48;
! const uint64_t PrngModMask = ((uint64_t)1 << PrngModPower) - 1;
//assert(IS_SAFE_SIZE_MUL(PrngMult, rnd), "Overflow on multiplication.");
//assert(IS_SAFE_SIZE_ADD(PrngMult * rnd, PrngAdd), "Overflow on addition.");
return (PrngMult * rnd + PrngAdd) & PrngModMask;
}
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