mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-05 01:52:19 +00:00
66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <mesosphere.hpp>
|
|
|
|
namespace ams::kern::svc {
|
|
|
|
/* ============================= Common ============================= */
|
|
|
|
namespace {
|
|
|
|
int32_t GetCurrentProcessorNumber() {
|
|
/* Setup variables to track affinity information. */
|
|
s32 current_phys_core;
|
|
u64 v_affinity_mask = 0;
|
|
|
|
/* Forever try to get the affinity. */
|
|
while (true) {
|
|
/* Update affinity information if we've run out. */
|
|
while (v_affinity_mask == 0) {
|
|
current_phys_core = GetCurrentCoreId();
|
|
v_affinity_mask = GetCurrentThread().GetVirtualAffinityMask();
|
|
if ((v_affinity_mask & (1ul << current_phys_core)) != 0) {
|
|
return current_phys_core;
|
|
}
|
|
}
|
|
|
|
/* Check the next virtual bit. */
|
|
do {
|
|
const s32 next_virt_core = static_cast<s32>(__builtin_ctzll(v_affinity_mask));
|
|
if (current_phys_core == cpu::VirtualToPhysicalCoreMap[next_virt_core]) {
|
|
return next_virt_core;
|
|
}
|
|
|
|
v_affinity_mask &= ~(1ul << next_virt_core);
|
|
} while (v_affinity_mask != 0);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/* ============================= 64 ABI ============================= */
|
|
|
|
int32_t GetCurrentProcessorNumber64() {
|
|
return GetCurrentProcessorNumber();
|
|
}
|
|
|
|
/* ============================= 64From32 ABI ============================= */
|
|
|
|
int32_t GetCurrentProcessorNumber64From32() {
|
|
return GetCurrentProcessorNumber();
|
|
}
|
|
|
|
}
|