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/* Copyright (c) 2024-2025 The Khronos Group Inc.
* Copyright (c) 2024-2025 Valve Corporation
* Copyright (c) 2024-2025 LunarG, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "sync_stats.h"
#if VVL_ENABLE_SYNCVAL_STATS != 0
#include "sync_commandbuffer.h"
#include <iostream>
namespace vvl {
// Until C++ 26 std::atomic<T>::fetch_max arrives
// https://en.cppreference.com/w/cpp/atomic/atomic/fetch_max
// https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p0493r5.pdf
template <typename T>
inline T atomic_fetch_max(std::atomic<T> ¤t_max, const T &value) noexcept {
T t = current_max.load();
while (!current_max.compare_exchange_weak(t, std::max(t, value)))
;
return t;
}
} // namespace vvl
namespace syncval_stats {
// NOTE: fetch_add/fetch_sub return value before increment/decrement.
// Our Add/Sub functions return new counter values, so they need to
// adjust result of the atomic function by adding/subtracting one.
void Value32::Update(uint32_t new_value) { u32.store(new_value); }
uint32_t Value32::Add(uint32_t n) { return u32.fetch_add(n) + 1; }
uint32_t Value32::Sub(uint32_t n) { return u32.fetch_sub(n) - 1; }
void Value64::Update(uint64_t new_value) { u64.store(new_value); }
uint64_t Value64::Add(uint64_t n) { return u64.fetch_add(n) + 1; }
uint64_t Value64::Sub(uint64_t n) { return u64.fetch_sub(n) - 1; }
void ValueMax32::Update(uint32_t new_value) {
value.Update(new_value);
vvl::atomic_fetch_max(max_value.u32, new_value);
}
void ValueMax32::Add(uint32_t n) {
uint32_t new_value = value.Add(n);
vvl::atomic_fetch_max(max_value.u32, new_value);
}
void ValueMax32::Sub(uint32_t n) { value.Sub(n); }
void ValueMax64::Update(uint64_t new_value) {
value.Update(new_value);
vvl::atomic_fetch_max(max_value.u64, new_value);
}
void ValueMax64::Add(uint64_t n) {
uint64_t new_value = value.Add(n);
vvl::atomic_fetch_max(max_value.u64, new_value);
}
void ValueMax64::Sub(uint64_t n) { value.Sub(n); }
Stats::~Stats() {
if (report_on_destruction) {
const std::string report = CreateReport();
std::cout << report;
}
}
void Stats::AddCommandBufferContext() { command_buffer_context_counter.Add(1); }
void Stats::RemoveCommandBufferContext() { command_buffer_context_counter.Sub(1); }
void Stats::AddQueueBatchContext() { queue_batch_context_counter.Add(1); }
void Stats::RemoveQueueBatchContext() { queue_batch_context_counter.Sub(1); }
void Stats::AddTimelineSignals(uint32_t count) { timeline_signal_counter.Add(count); }
void Stats::RemoveTimelineSignals(uint32_t count) { timeline_signal_counter.Sub(count); }
void Stats::AddUnresolvedBatch() { unresolved_batch_counter.Add(1); }
void Stats::RemoveUnresolvedBatch() { unresolved_batch_counter.Sub(1); }
void Stats::AddHandleRecord(uint32_t count) { handle_record_counter.Add(count); }
void Stats::RemoveHandleRecord(uint32_t count) { handle_record_counter.Sub(count); }
void Stats::UpdateMemoryStats() {
#if defined(USE_MIMALLOC_STATS)
mi_stats_merge();
{
std::unique_lock<std::mutex> lock(mi_stats_mutex);
mi_stats_get(sizeof(mi_stats), &mi_stats);
}
#endif
}
void Stats::ReportOnDestruction() { report_on_destruction = true; }
std::string Stats::CreateReport() {
std::ostringstream str;
{
uint32_t cb_contex = command_buffer_context_counter.value.u32;
uint32_t cb_context_max = command_buffer_context_counter.max_value.u32;
str << "CommandBufferAccessContext:\n";
str << "\tcount = " << cb_contex << '\n';
str << "\tmax_count = " << cb_context_max << '\n';
}
{
uint32_t qbc_context = queue_batch_context_counter.value.u32;
uint32_t qbc_context_max = queue_batch_context_counter.max_value.u32;
str << "QueueBatchContext:\n";
str << "\tcount = " << qbc_context << "\n";
str << "\tmax_count = " << qbc_context_max << "\n";
}
{
uint32_t signal = timeline_signal_counter.value.u32;
uint32_t signal_max = timeline_signal_counter.max_value.u32;
str << "Timeline signal:\n";
str << "\tcount = " << signal << "\n";
str << "\tmax_count = " << signal_max << "\n";
}
{
uint32_t unresolved_batch = unresolved_batch_counter.value.u32;
uint32_t unresolved_batch_max = unresolved_batch_counter.max_value.u32;
str << "Unresolved batch:\n";
str << "\tcount = " << unresolved_batch << "\n";
str << "\tmax_count = " << unresolved_batch_max << "\n";
}
{
uint32_t handle_record = handle_record_counter.value.u32;
uint64_t handle_record_memory = handle_record * sizeof(HandleRecord);
uint32_t handle_record_max = handle_record_counter.max_value.u32;
uint64_t handle_record_max_memory = handle_record_max * sizeof(HandleRecord);
str << "HandleRecord:\n";
str << "\tcount = " << handle_record << '\n';
str << "\tmemory = " << handle_record_memory << " bytes\n";
str << "\tmax_count = " << handle_record_max << '\n';
str << "\tmax_memory = " << handle_record_max_memory << " bytes\n";
}
#if defined(USE_MIMALLOC_STATS)
mi_stats_print_out([](const char* msg, void* arg) { *static_cast<std::ostringstream*>(arg) << msg; }, &str);
// Print allocation counts (these are not reported by mi_stats_print_out)
str << "malloc_normal_count: " << mi_stats.malloc_normal_count.total << "\n";
str << "malloc_huge_count: " << mi_stats.malloc_huge_count.total << "\n";
#endif
return str.str();
}
} // namespace syncval_stats
#endif // VVL_ENABLE_SYNCVAL_STATS != 0
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