coinscache_sim.cpp File Reference

#include <coins.h>
#include <crypto/sha256.h>
#include <kernel/chainstatemanager_opts.h>
#include <primitives/block.h>
#include <primitives/transaction.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <test/util/setup_common.h>
#include <util/threadpool.h>
#include <cassert>
#include <cstdint>
#include <memory>
#include <optional>
#include <vector>

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Functions
	StartPoolIfNeeded ()
sim_caches[0]	Wipe ()
FuzzedDataProvider	provider (buffer.data(), buffer.size())
	LIMITED_WHILE (provider.remaining_bytes(), 10000)
	for (const auto &cache :caches)
	for (unsigned sim_idx=1;sim_idx<=caches.size();++sim_idx)
	for (uint32_t outpointidx=0;outpointidx< NUM_OUTPOINTS;++outpointidx)

Variables
static const PrecomputedData	data
	Precomputed COutPoint and CCoins values. More...
CoinsViewBottom	bottom
	Dummy coinsview instance (base of the hierarchy). More...
std::vector< std::unique_ptr< CCoinsViewCache > >	caches
	Real CCoinsViewCache objects. More...
std::unique_ptr< OverlayFetchScope >	overlay_fetch_scope
	Long-lived StartFetching guard (nullptr unless corresponding level is a CoinsViewOverlay). More...
CacheLevel	sim_caches [MAX_CACHES+1]
	Simulated cache data (sim_caches[0] matches bottom, sim_caches[i+1] matches caches[i]). More...
uint32_t	current_height = 1U
	Current height in the simulation. More...
auto	lookup
	Helper lookup function in the simulated cache stack. More...
auto	flush
	Flush changes in top cache to the one below. More...

Function Documentation

for() [1/3]

for

(

const auto &cache :caches

)

Definition at line 477 of file coinscache_sim.cpp.

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for() [2/3]

for

(

)

Definition at line 505 of file coinscache_sim.cpp.

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for() [3/3]

for

(

unsigned

sim_idx = 1; sim_idx <= caches.size(); ++sim_idx

)

Definition at line 482 of file coinscache_sim.cpp.

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LIMITED_WHILE()

LIMITED_WHILE	(	provider.	remaining_bytes(),
		10000
	)

Definition at line 271 of file coinscache_sim.cpp.

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provider()

FuzzedDataProvider provider	(	buffer.	data(),
		buffer.	size()
	)

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StartPoolIfNeeded()

StartPoolIfNeeded

(

)

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Wipe()

sim_caches[0] Wipe

(

)

Variable Documentation

bottom

CoinsViewBottom bottom

Dummy coinsview instance (base of the hierarchy).

Definition at line 226 of file coinscache_sim.cpp.

caches

std::vector<std::unique_ptr<CCoinsViewCache> > caches

Real CCoinsViewCache objects.

Definition at line 228 of file coinscache_sim.cpp.

current_height

uint32_t current_height = 1U

Current height in the simulation.

Definition at line 234 of file coinscache_sim.cpp.

data

const PrecomputedData data

static

Precomputed COutPoint and CCoins values.

Definition at line 223 of file coinscache_sim.cpp.

flush

auto flush

Initial value:

= [&]() {
        assert(caches.size() >= 1);
        auto& cache = sim_caches[caches.size()];
        auto& prev_cache = sim_caches[caches.size() - 1];
        for (uint32_t outpointidx = 0; outpointidx < NUM_OUTPOINTS; ++outpointidx) {
            if (cache.entry[outpointidx].entrytype != EntryType::NONE) {
                prev_cache.entry[outpointidx] = cache.entry[outpointidx];
                cache.entry[outpointidx].entrytype = EntryType::NONE;
            }
        }
    }

Flush changes in top cache to the one below.

Definition at line 256 of file coinscache_sim.cpp.

lookup

auto lookup

Initial value:

= [&](uint32_t outpointidx, int sim_idx = -1) -> std::optional<std::pair<coinidx_type, uint32_t>> {
        uint32_t cache_idx = sim_idx == -1 ? caches.size() : sim_idx;
        while (true) {
            const auto& entry = sim_caches[cache_idx].entry[outpointidx];
            if (entry.entrytype == EntryType::UNSPENT) {
                return {{entry.coinidx, entry.height}};
            } else if (entry.entrytype == EntryType::SPENT) {
                return std::nullopt;
            };
            if (cache_idx == 0) break;
            --cache_idx;
        }
        return std::nullopt;
    }

Helper lookup function in the simulated cache stack.

Definition at line 240 of file coinscache_sim.cpp.

overlay_fetch_scope

std::unique_ptr<OverlayFetchScope> overlay_fetch_scope

Long-lived StartFetching guard (nullptr unless corresponding level is a CoinsViewOverlay).

Definition at line 230 of file coinscache_sim.cpp.

sim_caches

CacheLevel sim_caches[MAX_CACHES+1]

Simulated cache data (sim_caches[0] matches bottom, sim_caches[i+1] matches caches[i]).

Definition at line 232 of file coinscache_sim.cpp.