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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.

bitcoin / bitcoinstable

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▤ env_posix_test_helper.h

▤ env_posix_test.cc

▤ env_posix.cc

▤ env_test.cc

▤ env_windows_test_helper.h

▤ env_windows_test.cc

▤ no_destructor_test.cc

▤ arith_uint256.hGuide

▤ bitcoin-chainstate.cpp

▤ bitcoin-cli-res.rc

▤ bitcoin-cli.cppGuide

▤ bitcoin-res.rc

▤ bitcoin-tx-res.rc

▤ bitcoin-tx.cpp

▤ bitcoin-util-res.rc

▤ bitcoin-util.cpp

▤ bitcoin-wallet-res.rc

▤ blockencodings.cppGuide

▤ blockencodings.hGuide

▤ blockfilter.cppGuide

▤ blockfilter.hGuide

▤ chain.cppGuide

▤ chain.h

▤ chainparams.cppGuide

▤ chainparams.hGuide

▤ chainparamsbase.cppGuide

▤ chainparamsbase.hGuide

▤ chainparamsseeds.h

▤ checkqueue.hGuide

▤ clientversion.cppGuide

▤ clientversion.hGuide

▤ cluster_linearize.h

▤ CMakeLists.txt

▤ coins.cppGuide

▤ coins.hGuide

▤ compressor.cppGuide

▤ compressor.hGuide

▤ core_io.cpp

▤ core_io.hGuide

▤ core_memusage.hGuide

▤ cuckoocache.h

▤ dbwrapper.cpp

▤ dbwrapper.hGuide

▤ deploymentinfo.cppGuide

▤ deploymentinfo.hGuide

▤ deploymentstatus.cppGuide

▤ deploymentstatus.hGuide

▤ dummywallet.cppGuide

▤ external_signer.cpp

▤ external_signer.hGuide

▤ merkleblock.cppGuide

▤ merkleblock.hGuide

▤ musig.cpp

▤ musig.hGuide

▤ net_permissions.cppGuide

▤ net_permissions.hGuide

▤ net_processing.cppGuide

▤ netaddress.cppGuide

▤ netmessagemaker.hGuide

▤ noui.cppGuide

▤ noui.hGuide

▤ outputtype.cppGuide

▤ private_broadcast.cpp

▤ private_broadcast.h

▤ semaphore_grant.hGuide

▤ threadsafety.hGuide

▤ tinyformat.h

▤ torcontrol.cppGuide

▤ validation.cppGuide

▤ validation.h

▤ validationinterface.cpp

▤ validationinterface.h

▤ versionbits_impl.hGuide

▤ versionbits.cpp

▤ versionbits.hGuide

▤ walletinitinterface.hGuide

▤ CMakeLists.txtGuide

▤ libbitcoinkernel.pc.in

bitcoin / src / leveldb / util / env_posix.cc

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751  };
752
753  port::Mutex background_work_mutex_;
754  port::CondVar background_work_cv_ GUARDED_BY(background_work_mutex_);
755  bool started_background_thread_ GUARDED_BY(background_work_mutex_);
756
757  std::queue<BackgroundWorkItem> background_work_queue_
758      GUARDED_BY(background_work_mutex_);
759
760  PosixLockTable locks_;  // Thread-safe.
761  Limiter mmap_limiter_;  // Thread-safe.
762  Limiter fd_limiter_;    // Thread-safe.
763};
764
765// Return the maximum number of concurrent mmaps.
766int MaxMmaps() { return g_mmap_limit; }
767
768// Return the maximum number of read-only files to keep open.
769int MaxOpenFiles() {
770  if (g_open_read_only_file_limit >= 0) {
771    return g_open_read_only_file_limit;
772  }
773  struct ::rlimit rlim;
774  if (::getrlimit(RLIMIT_NOFILE, &rlim)) {
775    // getrlimit failed, fallback to hard-coded default.
776    g_open_read_only_file_limit = 50;
777  } else if (rlim.rlim_cur == RLIM_INFINITY) {
778    g_open_read_only_file_limit = std::numeric_limits<int>::max();
779  } else {
780    // Allow use of 20% of available file descriptors for read-only files.
781    g_open_read_only_file_limit = rlim.rlim_cur / 5;
782  }
783  return g_open_read_only_file_limit;
784}
785
786}  // namespace
787
788PosixEnv::PosixEnv()
789    : background_work_cv_(&background_work_mutex_),
790      started_background_thread_(false),
791      mmap_limiter_(MaxMmaps()),
792      fd_limiter_(MaxOpenFiles()) {}
793
794void PosixEnv::Schedule(
795    void (*background_work_function)(void* background_work_arg),
796    void* background_work_arg) {
797  background_work_mutex_.Lock();
798
799  // Start the background thread, if we haven't done so already.
800  if (!started_background_thread_) {
801    started_background_thread_ = true;
802    std::thread background_thread(PosixEnv::BackgroundThreadEntryPoint, this);
803    background_thread.detach();
804  }
805
806  // If the queue is empty, the background thread may be waiting for work.
807  if (background_work_queue_.empty()) {
808    background_work_cv_.Signal();
809  }
810
811  background_work_queue_.emplace(background_work_function, background_work_arg);
812  background_work_mutex_.Unlock();
813}
814
815void PosixEnv::BackgroundThreadMain() {
816  while (true) {
817    background_work_mutex_.Lock();
818
819    // Wait until there is work to be done.
820    while (background_work_queue_.empty()) {
821      background_work_cv_.Wait();
822    }
823
824    assert(!background_work_queue_.empty());
825    auto background_work_function = background_work_queue_.front().function;
826    void* background_work_arg = background_work_queue_.front().arg;
827    background_work_queue_.pop();
828
829    background_work_mutex_.Unlock();
830    background_work_function(background_work_arg);
831  }
832}
833
834namespace {
835
836// Wraps an Env instance whose destructor is never created.
837//
838// Intended usage:
839//   using PlatformSingletonEnv = SingletonEnv<PlatformEnv>;
840//   void ConfigurePosixEnv(int param) {
841//     PlatformSingletonEnv::AssertEnvNotInitialized();
842//     // set global configuration flags.
843//   }
844//   Env* Env::Default() {
845//     static PlatformSingletonEnv default_env;
846//     return default_env.env();
847//   }
848template <typename EnvType>
849class SingletonEnv {
850 public:
851  SingletonEnv() {
852#if !defined(NDEBUG)
853    env_initialized_.store(true, std::memory_order_relaxed);
854#endif  // !defined(NDEBUG)
855    static_assert(sizeof(env_storage_) >= sizeof(EnvType),
856                  "env_storage_ will not fit the Env");
857    static_assert(std::is_standard_layout_v<SingletonEnv<EnvType>>);
858    static_assert(
859        offsetof(SingletonEnv<EnvType>, env_storage_) % alignof(EnvType) == 0,
860        "env_storage_ does not meet the Env's alignment needs");
861    static_assert(alignof(SingletonEnv<EnvType>) % alignof(EnvType) == 0,
862                  "env_storage_ does not meet the Env's alignment needs");
863    new (env_storage_) EnvType();
864  }
865  ~SingletonEnv() = default;
866
867  SingletonEnv(const SingletonEnv&) = delete;
868  SingletonEnv& operator=(const SingletonEnv&) = delete;
869
870  Env* env() { return reinterpret_cast<Env*>(&env_storage_); }
871
872  static void AssertEnvNotInitialized() {
873#if !defined(NDEBUG)
874    assert(!env_initialized_.load(std::memory_order_relaxed));
875#endif  // !defined(NDEBUG)
876  }
877
878 private:
879  alignas(EnvType) char env_storage_[sizeof(EnvType)];
880#if !defined(NDEBUG)
881  static std::atomic<bool> env_initialized_;
882#endif  // !defined(NDEBUG)
883};
884
885#if !defined(NDEBUG)
886template <typename EnvType>
887std::atomic<bool> SingletonEnv<EnvType>::env_initialized_;
888#endif  // !defined(NDEBUG)
889
890using PosixDefaultEnv = SingletonEnv<PosixEnv>;
891
892}  // namespace
893
894void EnvPosixTestHelper::SetReadOnlyFDLimit(int limit) {
895  PosixDefaultEnv::AssertEnvNotInitialized();
896  g_open_read_only_file_limit = limit;
897}
898
899void EnvPosixTestHelper::SetReadOnlyMMapLimit(int limit) {
900  PosixDefaultEnv::AssertEnvNotInitialized();
901  g_mmap_limit = limit;
902}
903
904Env* Env::Default() {
905  static PosixDefaultEnv env_container;
906  return env_container.env();
907}
908
909}  // namespace leveldb
910

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440 guided files · 2,580 pending. Guides cover key sections, not every line.

cmake/bitcoin-build-config.h.in src/consensus/amount.h src/consensus/consensus.h src/primitives/block.h src/primitives/transaction.h src/crypto/sha256.h src/util/moneystr.h src/clientversion.h src/uint256.h src/script/script.h src/policy/policy.h CMakeLists.txt README.md COPYING src/consensus/tx_check.cpp src/consensus/tx_verify.cpp src/consensus/merkle.cpp src/pow.cpp src/validation.cpp src/script/interpreter.cpp src/script/solver.cpp src/script/sign.cpp src/key_io.cpp src/net.cpp src/net_processing.cpp src/netaddress.cpp src/protocol.h src/wallet/wallet.cpp src/wallet/spend.cpp

← Previous 250 linesCode page 4

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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