load-fragment: speed up parsing by using a perfect hash table with configuration settings built by gperf

1 files changed, 206 insertions, 0 deletions

diff --git a/src/load-fragment-gperf.gperf.m4 b/src/load-fragment-gperf.gperf.m4
new file mode 100644
index 0000000000..6f32fe9250
--- /dev/null
+++ b/src/load-fragment-gperf.gperf.m4
@@ -0,0 +1,206 @@
+%{
+#include <stddef.h>
+#include "conf-parser.h"
+#include "load-fragment.h"
+%}
+struct ConfigPerfItem;
+%null_strings
+%language=ANSI-C
+%define slot-name section_and_lvalue
+%define hash-function-name load_fragment_gperf_hash
+%define lookup-function-name load_fragment_gperf_lookup
+%readonly-tables
+%omit-struct-type
+%struct-type
+%includes
+%%
+m4_dnl Define the context options only once
+m4_define(`EXEC_CONTEXT_CONFIG_ITEMS',
+`$1.WorkingDirectory,            config_parse_unit_path_printf,      0,                             offsetof($1, exec_context.working_directory)
+$1.RootDirectory,                config_parse_unit_path_printf,      0,                             offsetof($1, exec_context.root_directory)
+$1.User,                         config_parse_unit_string_printf,    0,                             offsetof($1, exec_context.user)
+$1.Group,                        config_parse_unit_string_printf,    0,                             offsetof($1, exec_context.group)
+$1.SupplementaryGroups,          config_parse_strv,                  0,                             offsetof($1, exec_context.supplementary_groups)
+$1.Nice,                         config_parse_exec_nice,             0,                             offsetof($1, exec_context)
+$1.OOMScoreAdjust,               config_parse_exec_oom_score_adjust, 0,                             offsetof($1, exec_context)
+$1.IOSchedulingClass,            config_parse_exec_io_class,         0,                             offsetof($1, exec_context)
+$1.IOSchedulingPriority,         config_parse_exec_io_priority,      0,                             offsetof($1, exec_context)
+$1.CPUSchedulingPolicy,          config_parse_exec_cpu_sched_policy, 0,                             offsetof($1, exec_context)
+$1.CPUSchedulingPriority,        config_parse_exec_cpu_sched_prio,   0,                             offsetof($1, exec_context)
+$1.CPUSchedulingResetOnFork,     config_parse_bool,                  0,                             offsetof($1, exec_context.cpu_sched_reset_on_fork)
+$1.CPUAffinity,                  config_parse_exec_cpu_affinity,     0,                             offsetof($1, exec_context)
+$1.UMask,                        config_parse_mode,                  0,                             offsetof($1, exec_context.umask)
+$1.Environment,                  config_parse_unit_strv_printf,      0,                             offsetof($1, exec_context.environment)
+$1.EnvironmentFile,              config_parse_unit_env_file,         0,                             offsetof($1, exec_context.environment_files)
+$1.StandardInput,                config_parse_input,                 0,                             offsetof($1, exec_context.std_input)
+$1.StandardOutput,               config_parse_output,                0,                             offsetof($1, exec_context.std_output)
+$1.StandardError,                config_parse_output,                0,                             offsetof($1, exec_context.std_error)
+$1.TTYPath,                      config_parse_unit_path_printf,      0,                             offsetof($1, exec_context.tty_path)
+$1.TTYReset,                     config_parse_bool,                  0,                             offsetof($1, exec_context.tty_reset)
+$1.TTYVHangup,                   config_parse_bool,                  0,                             offsetof($1, exec_context.tty_vhangup)
+$1.TTYVTDisallocate,             config_parse_bool,                  0,                             offsetof($1, exec_context.tty_vt_disallocate)
+$1.SyslogIdentifier,             config_parse_unit_string_printf,    0,                             offsetof($1, exec_context.syslog_identifier)
+$1.SyslogFacility,               config_parse_facility,              0,                             offsetof($1, exec_context.syslog_priority)
+$1.SyslogLevel,                  config_parse_level,                 0,                             offsetof($1, exec_context.syslog_priority)
+$1.SyslogLevelPrefix,            config_parse_bool,                  0,                             offsetof($1, exec_context.syslog_level_prefix)
+$1.Capabilities,                 config_parse_exec_capabilities,     0,                             offsetof($1, exec_context)
+$1.SecureBits,                   config_parse_exec_secure_bits,      0,                             offsetof($1, exec_context)
+$1.CapabilityBoundingSet,        config_parse_exec_bounding_set,     0,                             offsetof($1, exec_context)
+$1.TimerSlackNSec,               config_parse_exec_timer_slack_nsec, 0,                             offsetof($1, exec_context)
+$1.LimitCPU,                     config_parse_limit,                 RLIMIT_CPU,                    offsetof($1, exec_context.rlimit)
+$1.LimitFSIZE,                   config_parse_limit,                 RLIMIT_FSIZE,                  offsetof($1, exec_context.rlimit)
+$1.LimitDATA,                    config_parse_limit,                 RLIMIT_DATA,                   offsetof($1, exec_context.rlimit)
+$1.LimitSTACK,                   config_parse_limit,                 RLIMIT_STACK,                  offsetof($1, exec_context.rlimit)
+$1.LimitCORE,                    config_parse_limit,                 RLIMIT_CORE,                   offsetof($1, exec_context.rlimit)
+$1.LimitRSS,                     config_parse_limit,                 RLIMIT_RSS,                    offsetof($1, exec_context.rlimit)
+$1.LimitNOFILE,                  config_parse_limit,                 RLIMIT_NOFILE,                 offsetof($1, exec_context.rlimit)
+$1.LimitAS,                      config_parse_limit,                 RLIMIT_AS,                     offsetof($1, exec_context.rlimit)
+$1.LimitNPROC,                   config_parse_limit,                 RLIMIT_NPROC,                  offsetof($1, exec_context.rlimit)
+$1.LimitMEMLOCK,                 config_parse_limit,                 RLIMIT_MEMLOCK,                offsetof($1, exec_context.rlimit)
+$1.LimitLOCKS,                   config_parse_limit,                 RLIMIT_LOCKS,                  offsetof($1, exec_context.rlimit)
+$1.LimitSIGPENDING,              config_parse_limit,                 RLIMIT_SIGPENDING,             offsetof($1, exec_context.rlimit)
+$1.LimitMSGQUEUE,                config_parse_limit,                 RLIMIT_MSGQUEUE,               offsetof($1, exec_context.rlimit)
+$1.LimitNICE,                    config_parse_limit,                 RLIMIT_NICE,                   offsetof($1, exec_context.rlimit)
+$1.LimitRTPRIO,                  config_parse_limit,                 RLIMIT_RTPRIO,                 offsetof($1, exec_context.rlimit)
+$1.LimitRTTIME,                  config_parse_limit,                 RLIMIT_RTTIME,                 offsetof($1, exec_context.rlimit)
+$1.ControlGroup,                 config_parse_unit_cgroup,           0,                             offsetof($1, exec_context)
+$1.ReadWriteDirectories,         config_parse_path_strv,             0,                             offsetof($1, exec_context.read_write_dirs)
+$1.ReadOnlyDirectories,          config_parse_path_strv,             0,                             offsetof($1, exec_context.read_only_dirs)
+$1.InaccessibleDirectories,      config_parse_path_strv,             0,                             offsetof($1, exec_context.inaccessible_dirs)
+$1.PrivateTmp,                   config_parse_bool,                  0,                             offsetof($1, exec_context.private_tmp)
+$1.MountFlags,                   config_parse_exec_mount_flags,      0,                             offsetof($1, exec_context)
+$1.TCPWrapName,                  config_parse_unit_string_printf,    0,                             offsetof($1, exec_context.tcpwrap_name)
+$1.PAMName,                      config_parse_unit_string_printf,    0,                             offsetof($1, exec_context.pam_name)
+$1.KillMode,                     config_parse_kill_mode,             0,                             offsetof($1, exec_context.kill_mode)
+$1.KillSignal,                   config_parse_kill_signal,           0,                             offsetof($1, exec_context.kill_signal)
+$1.SendSIGKILL,                  config_parse_bool,                  0,                             offsetof($1, exec_context.send_sigkill)
+$1.UtmpIdentifier,               config_parse_unit_string_printf,    0,                             offsetof($1, exec_context.utmp_id)
+$1.ControlGroupModify,           config_parse_bool,                  0,                             offsetof($1, exec_context.control_group_modify)'
+)m4_dnl
+Unit.Names,                      config_parse_unit_names,            0,                             0
+Unit.Description,                config_parse_unit_string_printf,    0,                             offsetof(Meta, description)
+Unit.Requires,                   config_parse_unit_deps,             UNIT_REQUIRES,                 0
+Unit.RequiresOverridable,        config_parse_unit_deps,             UNIT_REQUIRES_OVERRIDABLE,     0
+Unit.Requisite,                  config_parse_unit_deps,             UNIT_REQUISITE,                0
+Unit.RequisiteOverridable,       config_parse_unit_deps,             UNIT_REQUISITE_OVERRIDABLE,    0
+Unit.Wants,                      config_parse_unit_deps,             UNIT_WANTS,                    0
+Unit.BindTo,                     config_parse_unit_deps,             UNIT_BIND_TO,                  0
+Unit.Conflicts,                  config_parse_unit_deps,             UNIT_CONFLICTS,                0
+Unit.Before,                     config_parse_unit_deps,             UNIT_BEFORE,                   0
+Unit.After,                      config_parse_unit_deps,             UNIT_AFTER,                    0
+Unit.OnFailure,                  config_parse_unit_deps,             UNIT_ON_FAILURE,               0
+Unit.StopWhenUnneeded,           config_parse_bool,                  0,                             offsetof(Meta, stop_when_unneeded)
+Unit.RefuseManualStart,          config_parse_bool,                  0,                             offsetof(Meta, refuse_manual_start)
+Unit.RefuseManualStop,           config_parse_bool,                  0,                             offsetof(Meta, refuse_manual_stop)
+Unit.AllowIsolate,               config_parse_bool,                  0,                             offsetof(Meta, allow_isolate)
+Unit.DefaultDependencies,        config_parse_bool,                  0,                             offsetof(Meta, default_dependencies)
+Unit.OnFailureIsolate,           config_parse_bool,                  0,                             offsetof(Meta, on_failure_isolate)
+Unit.IgnoreOnIsolate,            config_parse_bool,                  0,                             offsetof(Meta, ignore_on_isolate)
+Unit.IgnoreOnSnapshot,           config_parse_bool,                  0,                             offsetof(Meta, ignore_on_snapshot)
+Unit.JobTimeoutSec,              config_parse_usec,                  0,                             offsetof(Meta, job_timeout)
+Unit.ConditionPathExists,        config_parse_unit_condition_path,   CONDITION_PATH_EXISTS,         0
+Unit.ConditionPathExistsGlob,    config_parse_unit_condition_path,   CONDITION_PATH_EXISTS_GLOB,    0
+Unit.ConditionPathIsDirectory,   config_parse_unit_condition_path,   CONDITION_PATH_IS_DIRECTORY,   0
+Unit.ConditionDirectoryNotEmpty, config_parse_unit_condition_path,   CONDITION_DIRECTORY_NOT_EMPTY, 0
+Unit.ConditionFileIsExecutable,  config_parse_unit_condition_path,   CONDITION_FILE_IS_EXECUTABLE,  0
+Unit.ConditionKernelCommandLine, config_parse_unit_condition_string, CONDITION_KERNEL_COMMAND_LINE, 0
+Unit.ConditionVirtualization,    config_parse_unit_condition_string, CONDITION_VIRTUALIZATION,      0
+Unit.ConditionSecurity,          config_parse_unit_condition_string, CONDITION_SECURITY,            0
+Unit.ConditionNull,              config_parse_unit_condition_null,   0,                             0
+m4_dnl
+Service.PIDFile,                 config_parse_unit_path_printf,      0,                             offsetof(Service, pid_file)
+Service.ExecStartPre,            config_parse_exec,                  SERVICE_EXEC_START_PRE,        offsetof(Service, exec_command)
+Service.ExecStart,               config_parse_exec,                  SERVICE_EXEC_START,            offsetof(Service, exec_command)
+Service.ExecStartPost,           config_parse_exec,                  SERVICE_EXEC_START_POST,       offsetof(Service, exec_command)
+Service.ExecReload,              config_parse_exec,                  SERVICE_EXEC_RELOAD,           offsetof(Service, exec_command)
+Service.ExecStop,                config_parse_exec,                  SERVICE_EXEC_STOP,             offsetof(Service, exec_command)
+Service.ExecStopPost,            config_parse_exec,                  SERVICE_EXEC_STOP_POST,        offsetof(Service, exec_command)
+Service.RestartSec,              config_parse_usec,                  0,                             offsetof(Service, restart_usec)
+Service.TimeoutSec,              config_parse_usec,                  0,                             offsetof(Service, timeout_usec)
+Service.Type,                    config_parse_service_type,          0,                             offsetof(Service, type)
+Service.Restart,                 config_parse_service_restart,       0,                             offsetof(Service, restart)
+Service.PermissionsStartOnly,    config_parse_bool,                  0,                             offsetof(Service, permissions_start_only)
+Service.RootDirectoryStartOnly,  config_parse_bool,                  0,                             offsetof(Service, root_directory_start_only)
+Service.RemainAfterExit,         config_parse_bool,                  0,                             offsetof(Service, remain_after_exit)
+Service.GuessMainPID,            config_parse_bool,                  0,                             offsetof(Service, guess_main_pid)
+m4_ifdef(`HAVE_SYSV_COMPAT',
+`Service.SysVStartPriority,      config_parse_sysv_priority,         0,                             offsetof(Service, sysv_start_priority)',
+`Service.SysVStartPriority,      config_parse_warn_compat,           0,                             0'
+)
+Service.NonBlocking,             config_parse_bool,                  0,                             offsetof(Service, exec_context.non_blocking)
+Service.BusName,                 config_parse_unit_string_printf,    0,                             offsetof(Service, bus_name)
+Service.NotifyAccess,            config_parse_notify_access,         0,                             offsetof(Service, notify_access)
+Service.Sockets,                 config_parse_service_sockets,       0,                             0
+Service.FsckPassNo,              config_parse_fsck_passno,           0,                             offsetof(Service, fsck_passno)
+EXEC_CONTEXT_CONFIG_ITEMS(Service)m4_dnl
+m4_dnl
+Socket.ListenStream,             config_parse_socket_listen,         0,                             0
+Socket.ListenDatagram,           config_parse_socket_listen,         0,                             0
+Socket.ListenSequentialPacket,   config_parse_socket_listen,         0,                             0
+Socket.ListenFIFO,               config_parse_socket_listen,         0,                             0
+Socket.ListenNetlink,            config_parse_socket_listen,         0,                             0
+Socket.ListenSpecial,            config_parse_socket_listen,         0,                             0
+Socket.ListenMessageQueue,       config_parse_socket_listen,         0,                             0
+Socket.BindIPv6Only,             config_parse_socket_bind,           0,                             0,
+Socket.Backlog,                  config_parse_unsigned,              0,                             offsetof(Socket, backlog)
+Socket.BindToDevice,             config_parse_socket_bindtodevice,   0,                             0
+Socket.ExecStartPre,             config_parse_exec,                  SOCKET_EXEC_START_PRE,         offsetof(Socket, exec_command)
+Socket.ExecStartPost,            config_parse_exec,                  SOCKET_EXEC_START_POST,        offsetof(Socket, exec_command)
+Socket.ExecStopPre,              config_parse_exec,                  SOCKET_EXEC_STOP_PRE,          offsetof(Socket, exec_command)
+Socket.ExecStopPost,             config_parse_exec,                  SOCKET_EXEC_STOP_POST,         offsetof(Socket, exec_command)
+Socket.TimeoutSec,               config_parse_usec,                  0,                             offsetof(Socket, timeout_usec)
+Socket.DirectoryMode,            config_parse_mode,                  0,                             offsetof(Socket, directory_mode)
+Socket.SocketMode,               config_parse_mode,                  0,                             offsetof(Socket, socket_mode)
+Socket.Accept,                   config_parse_bool,                  0,                             offsetof(Socket, accept)
+Socket.MaxConnections,           config_parse_unsigned,              0,                             offsetof(Socket, max_connections)
+Socket.KeepAlive,                config_parse_bool,                  0,                             offsetof(Socket, keep_alive)
+Socket.Priority,                 config_parse_int,                   0,                             offsetof(Socket, priority)
+Socket.ReceiveBuffer,            config_parse_size,                  0,                             offsetof(Socket, receive_buffer)
+Socket.SendBuffer,               config_parse_size,                  0,                             offsetof(Socket, send_buffer)
+Socket.IPTOS,                    config_parse_ip_tos,                0,                             offsetof(Socket, ip_tos)
+Socket.IPTTL,                    config_parse_int,                   0,                             offsetof(Socket, ip_ttl)
+Socket.Mark,                     config_parse_int,                   0,                             offsetof(Socket, mark)
+Socket.PipeSize,                 config_parse_size,                  0,                             offsetof(Socket, pipe_size)
+Socket.FreeBind,                 config_parse_bool,                  0,                             offsetof(Socket, free_bind)
+Socket.Transparent,              config_parse_bool,                  0,                             offsetof(Socket, transparent)
+Socket.Broadcast,                config_parse_bool,                  0,                             offsetof(Socket, broadcast)
+Socket.TCPCongestion,            config_parse_string,                0,                             offsetof(Socket, tcp_congestion)
+Socket.MessageQueueMaxMessages,  config_parse_long,                  0,                             offsetof(Socket, mq_maxmsg)
+Socket.MessageQueueMessageSize,  config_parse_long,                  0,                             offsetof(Socket, mq_msgsize)
+Socket.Service,                  config_parse_socket_service,        0,                             0
+EXEC_CONTEXT_CONFIG_ITEMS(Socket)m4_dnl
+m4_dnl
+Mount.What,                      config_parse_string,                0,                             offsetof(Mount, parameters_fragment.what)
+Mount.Where,                     config_parse_path,                  0,                             offsetof(Mount, where)
+Mount.Options,                   config_parse_string,                0,                             offsetof(Mount, parameters_fragment.options)
+Mount.Type,                      config_parse_string,                0,                             offsetof(Mount, parameters_fragment.fstype)
+Mount.TimeoutSec,                config_parse_usec,                  0,                             offsetof(Mount, timeout_usec)
+Mount.DirectoryMode,             config_parse_mode,                  0,                             offsetof(Mount, directory_mode)
+EXEC_CONTEXT_CONFIG_ITEMS(Mount)m4_dnl
+m4_dnl
+Automount.Where,                 config_parse_path,                  0,                             offsetof(Automount, where)
+Automount.DirectoryMode,         config_parse_mode,                  0,                             offsetof(Automount, directory_mode)
+m4_dnl
+Swap.What,                       config_parse_path,                  0,                             offsetof(Swap, parameters_fragment.what)
+Swap.Priority,                   config_parse_int,                   0,                             offsetof(Swap, parameters_fragment.priority)
+Swap.TimeoutSec,                 config_parse_usec,                  0,                             offsetof(Swap, timeout_usec)
+EXEC_CONTEXT_CONFIG_ITEMS(Swap)m4_dnl
+m4_dnl
+Timer.OnActiveSec,               config_parse_timer,                 0,                             0
+Timer.OnBootSec,                 config_parse_timer,                 0,                             0
+Timer.OnStartupSec,              config_parse_timer,                 0,                             0
+Timer.OnUnitActiveSec,           config_parse_timer,                 0,                             0
+Timer.OnUnitInactiveSec,         config_parse_timer,                 0,                             0
+Timer.Unit,                      config_parse_timer_unit,            0,                             0
+m4_dnl
+Path.PathExists,                 config_parse_path_spec,             0,                             0
+Path.PathExistsGlob,             config_parse_path_spec,             0,                             0
+Path.PathChanged,                config_parse_path_spec,             0,                             0
+Path.DirectoryNotEmpty,          config_parse_path_spec,             0,                             0
+Path.Unit,                       config_parse_path_unit,             0,                             0
+Path.MakeDirectory,              config_parse_bool,                  0,                             offsetof(Path, make_directory)
+Path.DirectoryMode,              config_parse_mode,                  0,                             offsetof(Path, directory_mode)
+m4_dnl The [Install] section is ignored here.
+Install.Alias,                   NULL,                               0,                             0
+Install.WantedBy,                NULL,                               0,                             0
+Install.Also,                    NULL,                               0,                             0