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atomic.cpp: adjust assumed pointer mask

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Increase waiter mask (allow 65535 waiters).
Assume 47-bit pointers instead of 48-bit.
This commit is contained in:
Nekotekina 2020-11-07 01:17:32 +03:00
parent 31f0a0c064
commit bd0b292b39
1 changed files with 4 additions and 4 deletions
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8
rpcs3/util/atomic.cpp
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@ -22,11 +22,11 @@ static constexpr uint s_hashtable_power = 16;
// Total number of entries, should be a power of 2.
static constexpr std::uintptr_t s_hashtable_size = 1u << s_hashtable_power;
// Pointer mask without bits used as hash, assuming signed 48-bit pointers.
static constexpr u64 s_pointer_mask = s_hashtable_power > 7 ? 0xffff'ffff'ffff & ~((s_hashtable_size - 1)) : 0xffff'ffff'ffff;
// Pointer mask without bits used as hash, assuming 47-bit pointers.
static constexpr u64 s_pointer_mask = s_hashtable_power > 7 ? 0x7fff'ffff'ffff & ~((s_hashtable_size - 1)) : 0x7fff'ffff'ffff;
// Max number of waiters is 32767.
static constexpr u64 s_waiter_mask = s_hashtable_power > 7 ? 0x7fff'0000'0000'0000 : 0x7f00'0000'0000'0000;
// Max number of waiters is 65535.
static constexpr u64 s_waiter_mask = s_hashtable_power > 7 ? 0x7fff'8000'0000'0000 : 0x7f80'0000'0000'0000;
// Bit indicates that more than one.
static constexpr u64 s_collision_bit = 0x8000'0000'0000'0000;