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/* Copyright (c) 2025 The Khronos Group Inc.
* Copyright (c) 2025 Valve Corporation
* Copyright (c) 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.
*/
#pragma once
#include <string>
#include <cstdint>
#ifndef VVL_ENABLE_SYNCVAL_STATS
#define VVL_ENABLE_SYNCVAL_STATS 0
#endif
#if VVL_ENABLE_SYNCVAL_STATS != 0
#include <atomic>
#include <mutex>
// NOTE: mimalloc should be built with MI_STAT=1 to enable stats module
#if defined(USE_MIMALLOC)
#include <mimalloc.h>
#if MI_MALLOC_VERSION >= 300
#define USE_MIMALLOC_STATS
#include "mimalloc-stats.h"
#endif
#endif // defined(USE_MIMALLOC)
#endif // VVL_ENABLE_SYNCVAL_STATS != 0
namespace syncval {
class SyncValidator;
#if VVL_ENABLE_SYNCVAL_STATS != 0
struct Value32 {
std::atomic_uint32_t u32;
void Update(uint32_t new_value);
uint32_t Add(uint32_t n); // Returns new counter value
uint32_t Sub(uint32_t n); // Returns new counter value
};
struct Value64 {
std::atomic_uint64_t u64;
void Update(uint64_t new_value);
uint64_t Add(uint64_t n); // Returns new counter value
uint64_t Sub(uint64_t n); // Returns new counter value
};
struct ValueMax32 {
Value32 value;
Value32 max_value;
void Update(uint32_t new_value);
void Add(uint32_t n);
void Sub(uint32_t n);
};
struct ValueMax64 {
Value64 value;
Value64 max_value;
void Update(uint64_t new_value);
void Add(uint64_t n);
void Sub(uint64_t n);
};
// NOTE: Update of AccessContextStats counters is not thread-safe but it is fine until it works for development purposes.
// Thread-safe version will need to inject atomic counters in various places to track all relevant state.
// Current non-thread-safe implementation is very simple: iterate over everything and collect data.
struct AccessContextStats {
uint32_t access_contexts = 0;
uint32_t access_states = 0;
uint32_t read_states = 0;
uint32_t write_states = 0;
uint32_t first_accesses = 0;
uint32_t access_states_with_multiple_reads = 0;
uint32_t access_states_with_multiple_firsts = 0;
uint32_t access_states_with_dynamic_allocations = 0;
uint64_t access_states_dynamic_allocation_size = 0;
// The largest first accesses array
uint32_t max_first_accesses_size = 0;
// The largest last reads array
uint32_t max_last_reads_count = 0;
void UpdateMax(const AccessContextStats& cur_stats);
};
struct AccessStats {
AccessContextStats cb_access_stats;
AccessContextStats max_cb_access_stats;
AccessContextStats queue_access_stats;
AccessContextStats max_queue_access_stats;
AccessContextStats subpass_access_stats;
AccessContextStats max_subpass_access_stats;
void Update(SyncValidator& validator);
std::mutex access_stats_mutex;
};
struct Stats {
~Stats();
bool report_on_destruction = false;
#if defined(USE_MIMALLOC_STATS)
mi_stats_t mi_stats;
std::mutex mi_stats_mutex;
#endif
ValueMax32 command_buffer_contexts;
void AddCommandBufferContext();
void RemoveCommandBufferContext();
ValueMax32 queue_batch_contexts;
void AddQueueBatchContext();
void RemoveQueueBatchContext();
ValueMax32 timeline_signals;
void AddTimelineSignals(uint32_t count);
void RemoveTimelineSignals(uint32_t count);
ValueMax32 unresolved_batches;
void AddUnresolvedBatch();
void RemoveUnresolvedBatch();
ValueMax32 handle_records;
void AddHandleRecord(uint32_t count = 1);
void RemoveHandleRecord(uint32_t count = 1);
AccessStats access_stats;
void UpdateAccessStats(SyncValidator& validator);
void UpdateMemoryStats();
void ReportOnDestruction();
std::string CreateReport();
};
#else
struct Stats {
void AddHandleRecord(uint32_t count = 1) {}
void RemoveHandleRecord(uint32_t count = 1) {}
void AddCommandBufferContext() {}
void RemoveCommandBufferContext() {}
void AddQueueBatchContext() {}
void RemoveQueueBatchContext() {}
void AddTimelineSignals(uint32_t count) {}
void RemoveTimelineSignals(uint32_t count) {}
void AddUnresolvedBatch() {}
void RemoveUnresolvedBatch() {}
void UpdateAccessStats(SyncValidator& validator) {}
void UpdateMemoryStats() {}
void ReportOnDestruction() {}
std::string CreateReport() { return "SyncVal stats are disabled in the current build configuration\n"; }
};
} // namespace syncval
#endif // VVL_ENABLE_SYNCVAL_STATS != 0
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