bsd/sys/resource.h

   1 /*
   2  * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  29 /*
  30  * Copyright (c) 1982, 1986, 1993
  31  *      The Regents of the University of California.  All rights reserved.
  32  *
  33  * Redistribution and use in source and binary forms, with or without
  34  * modification, are permitted provided that the following conditions
  35  * are met:
  36  * 1. Redistributions of source code must retain the above copyright
  37  *    notice, this list of conditions and the following disclaimer.
  38  * 2. Redistributions in binary form must reproduce the above copyright
  39  *    notice, this list of conditions and the following disclaimer in the
  40  *    documentation and/or other materials provided with the distribution.
  41  * 3. All advertising materials mentioning features or use of this software
  42  *    must display the following acknowledgement:
  43  *      This product includes software developed by the University of
  44  *      California, Berkeley and its contributors.
  45  * 4. Neither the name of the University nor the names of its contributors
  46  *    may be used to endorse or promote products derived from this software
  47  *    without specific prior written permission.
  48  *
  49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  59  * SUCH DAMAGE.
  60  *
  61  *      @(#)resource.h  8.2 (Berkeley) 1/4/94
  62  */
  63
  64 #ifndef _SYS_RESOURCE_H_
  65 #define _SYS_RESOURCE_H_
  66
  67 #include <sys/appleapiopts.h>
  68 #include <sys/cdefs.h>
  69 #include <sys/_types.h>
  70
  71 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
  72 #include <stdint.h>
  73 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
  74
  75 #ifndef KERNEL
  76 #include <Availability.h>
  77 #endif
  78
  79 /* [XSI] The timeval structure shall be defined as described in
  80  * <sys/time.h>
  81  */
  82 #include <sys/_types/_timeval.h>
  83 #ifdef KERNEL
  84 #include <sys/_types/_user32_timeval.h>
  85 #include <sys/_types/_user64_timeval.h>
  86 #endif
  87
  88 /* The id_t type shall be defined as described in <sys/types.h> */
  89 #include <sys/_types/_id_t.h>
  90
  91
  92 /*
  93  * Resource limit type (low 63 bits, excluding the sign bit)
  94  */
  95 typedef __uint64_t      rlim_t;
  96
  97
  98 /*****
  99  * PRIORITY
 100  */
 101
 102 /*
 103  * Possible values of the first parameter to getpriority()/setpriority(),
 104  * used to indicate the type of the second parameter.
 105  */
 106 #define PRIO_PROCESS    0               /* Second argument is a PID */
 107 #define PRIO_PGRP       1               /* Second argument is a GID */
 108 #define PRIO_USER       2               /* Second argument is a UID */
 109
 110 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
 111 #define PRIO_DARWIN_THREAD      3               /* Second argument is always 0 (current thread) */
 112 #define PRIO_DARWIN_PROCESS     4               /* Second argument is a PID */
 113
 114 #ifdef PRIVATE
 115
 116 #define PRIO_DARWIN_GPU         5               /* Second argument is a PID */
 117
 118 #define PRIO_DARWIN_GPU_ALLOW   0x1
 119 #define PRIO_DARWIN_GPU_DENY    0x2
 120
 121 #define PRIO_DARWIN_ROLE        6               /* Second argument is a PID */
 122
 123 #define PRIO_DARWIN_ROLE_DEFAULT        0x0     /* Default state */
 124 #define PRIO_DARWIN_ROLE_UI_FOCAL       0x1     /* On  screen,     focal UI */
 125 #define PRIO_DARWIN_ROLE_UI             0x2     /* On  screen, non-focal UI */
 126 #define PRIO_DARWIN_ROLE_NON_UI         0x3     /* Off screen, non-focal UI */
 127
 128 #endif /* PRIVATE */
 129
 130 /*
 131  * Range limitations for the value of the third parameter to setpriority().
 132  */
 133 #define PRIO_MIN        -20
 134 #define PRIO_MAX        20
 135
 136 /*
 137  * use PRIO_DARWIN_BG to set the current thread into "background" state
 138  * which lowers CPU, disk IO, and networking priorites until thread terminates
 139  * or "background" state is revoked
 140  */
 141 #define PRIO_DARWIN_BG 0x1000
 142
 143 /*
 144  * use PRIO_DARWIN_NONUI to restrict a process's ability to make calls to
 145  * the GPU. (deprecated)
 146  */
 147 #define PRIO_DARWIN_NONUI 0x1001
 148
 149 #endif  /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
 150
 151
 152
 153 /*****
 154  * RESOURCE USAGE
 155  */
 156
 157 /*
 158  * Possible values of the first parameter to getrusage(), used to indicate
 159  * the scope of the information to be returned.
 160  */
 161 #define RUSAGE_SELF     0               /* Current process information */
 162 #define RUSAGE_CHILDREN -1              /* Current process' children */
 163
 164 /*
 165  * A structure representing an accounting of resource utilization.  The
 166  * address of an instance of this structure is the second parameter to
 167  * getrusage().
 168  *
 169  * Note: All values other than ru_utime and ru_stime are implementaiton
 170  *       defined and subject to change in a future release.  Their use
 171  *       is discouraged for standards compliant programs.
 172  */
 173 struct  rusage {
 174         struct timeval ru_utime;        /* user time used (PL) */
 175         struct timeval ru_stime;        /* system time used (PL) */
 176 #if __DARWIN_C_LEVEL < __DARWIN_C_FULL
 177         long    ru_opaque[14];          /* implementation defined */
 178 #else
 179         /*
 180          * Informational aliases for source compatibility with programs
 181          * that need more information than that provided by standards,
 182          * and which do not mind being OS-dependent.
 183          */
 184         long    ru_maxrss;              /* max resident set size (PL) */
 185 #define ru_first        ru_ixrss        /* internal: ruadd() range start */
 186         long    ru_ixrss;               /* integral shared memory size (NU) */
 187         long    ru_idrss;               /* integral unshared data (NU)  */
 188         long    ru_isrss;               /* integral unshared stack (NU) */
 189         long    ru_minflt;              /* page reclaims (NU) */
 190         long    ru_majflt;              /* page faults (NU) */
 191         long    ru_nswap;               /* swaps (NU) */
 192         long    ru_inblock;             /* block input operations (atomic) */
 193         long    ru_oublock;             /* block output operations (atomic) */
 194         long    ru_msgsnd;              /* messages sent (atomic) */
 195         long    ru_msgrcv;              /* messages received (atomic) */
 196         long    ru_nsignals;            /* signals received (atomic) */
 197         long    ru_nvcsw;               /* voluntary context switches (atomic) */
 198         long    ru_nivcsw;              /* involuntary " */
 199 #define ru_last         ru_nivcsw       /* internal: ruadd() range end */
 200 #endif  /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
 201 };
 202
 203 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
 204 /*
 205  * Flavors for proc_pid_rusage().
 206  */
 207 #define RUSAGE_INFO_V0  0
 208 #define RUSAGE_INFO_V1  1
 209 #define RUSAGE_INFO_V2  2
 210 #define RUSAGE_INFO_V3  3
 211 #define RUSAGE_INFO_CURRENT RUSAGE_INFO_V3
 212
 213 typedef void *rusage_info_t;
 214
 215 struct rusage_info_v0 {
 216         uint8_t  ri_uuid[16];
 217         uint64_t ri_user_time;
 218         uint64_t ri_system_time;
 219         uint64_t ri_pkg_idle_wkups;
 220         uint64_t ri_interrupt_wkups;
 221         uint64_t ri_pageins;
 222         uint64_t ri_wired_size;
 223         uint64_t ri_resident_size;
 224         uint64_t ri_phys_footprint;
 225         uint64_t ri_proc_start_abstime;
 226         uint64_t ri_proc_exit_abstime;
 227 };
 228
 229 struct rusage_info_v1 {
 230         uint8_t  ri_uuid[16];
 231         uint64_t ri_user_time;
 232         uint64_t ri_system_time;
 233         uint64_t ri_pkg_idle_wkups;
 234         uint64_t ri_interrupt_wkups;
 235         uint64_t ri_pageins;
 236         uint64_t ri_wired_size;
 237         uint64_t ri_resident_size;
 238         uint64_t ri_phys_footprint;
 239         uint64_t ri_proc_start_abstime;
 240         uint64_t ri_proc_exit_abstime;
 241         uint64_t ri_child_user_time;
 242         uint64_t ri_child_system_time;
 243         uint64_t ri_child_pkg_idle_wkups;
 244         uint64_t ri_child_interrupt_wkups;
 245         uint64_t ri_child_pageins;
 246         uint64_t ri_child_elapsed_abstime;
 247 };
 248
 249 struct rusage_info_v2 {
 250         uint8_t  ri_uuid[16];
 251         uint64_t ri_user_time;
 252         uint64_t ri_system_time;
 253         uint64_t ri_pkg_idle_wkups;
 254         uint64_t ri_interrupt_wkups;
 255         uint64_t ri_pageins;
 256         uint64_t ri_wired_size;
 257         uint64_t ri_resident_size;
 258         uint64_t ri_phys_footprint;
 259         uint64_t ri_proc_start_abstime;
 260         uint64_t ri_proc_exit_abstime;
 261         uint64_t ri_child_user_time;
 262         uint64_t ri_child_system_time;
 263         uint64_t ri_child_pkg_idle_wkups;
 264         uint64_t ri_child_interrupt_wkups;
 265         uint64_t ri_child_pageins;
 266         uint64_t ri_child_elapsed_abstime;
 267         uint64_t ri_diskio_bytesread;
 268         uint64_t ri_diskio_byteswritten;
 269 };
 270
 271 struct rusage_info_v3 {
 272         uint8_t  ri_uuid[16];
 273         uint64_t ri_user_time;
 274         uint64_t ri_system_time;
 275         uint64_t ri_pkg_idle_wkups;
 276         uint64_t ri_interrupt_wkups;
 277         uint64_t ri_pageins;
 278         uint64_t ri_wired_size;
 279         uint64_t ri_resident_size;
 280         uint64_t ri_phys_footprint;
 281         uint64_t ri_proc_start_abstime;
 282         uint64_t ri_proc_exit_abstime;
 283         uint64_t ri_child_user_time;
 284         uint64_t ri_child_system_time;
 285         uint64_t ri_child_pkg_idle_wkups;
 286         uint64_t ri_child_interrupt_wkups;
 287         uint64_t ri_child_pageins;
 288         uint64_t ri_child_elapsed_abstime;
 289         uint64_t ri_diskio_bytesread;
 290         uint64_t ri_diskio_byteswritten;
 291         uint64_t ri_cpu_time_qos_default;
 292         uint64_t ri_cpu_time_qos_maintenance;
 293         uint64_t ri_cpu_time_qos_background;
 294         uint64_t ri_cpu_time_qos_utility;
 295         uint64_t ri_cpu_time_qos_legacy;
 296         uint64_t ri_cpu_time_qos_user_initiated;
 297         uint64_t ri_cpu_time_qos_user_interactive;
 298         uint64_t ri_billed_system_time;
 299         uint64_t ri_serviced_system_time;
 300 };
 301
 302 typedef struct rusage_info_v3 rusage_info_current;
 303
 304 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
 305
 306 #ifdef KERNEL
 307
 308 struct rusage_superset {
 309         struct rusage                   ru;
 310         rusage_info_current     ri;
 311 };
 312
 313 struct rusage_info_child {
 314         uint64_t ri_child_user_time;
 315         uint64_t ri_child_system_time;
 316         uint64_t ri_child_pkg_idle_wkups;
 317         uint64_t ri_child_interrupt_wkups;
 318         uint64_t ri_child_pageins;
 319         uint64_t ri_child_elapsed_abstime;
 320 };
 321
 322 struct  user64_rusage {
 323         struct user64_timeval ru_utime; /* user time used */
 324         struct user64_timeval ru_stime; /* system time used */
 325         user64_long_t   ru_maxrss;              /* max resident set size */
 326         user64_long_t   ru_ixrss;               /* integral shared memory size */
 327         user64_long_t   ru_idrss;               /* integral unshared data " */
 328         user64_long_t   ru_isrss;               /* integral unshared stack " */
 329         user64_long_t   ru_minflt;              /* page reclaims */
 330         user64_long_t   ru_majflt;              /* page faults */
 331         user64_long_t   ru_nswap;               /* swaps */
 332         user64_long_t   ru_inblock;             /* block input operations */
 333         user64_long_t   ru_oublock;             /* block output operations */
 334         user64_long_t   ru_msgsnd;              /* messages sent */
 335         user64_long_t   ru_msgrcv;              /* messages received */
 336         user64_long_t   ru_nsignals;    /* signals received */
 337         user64_long_t   ru_nvcsw;               /* voluntary context switches */
 338         user64_long_t   ru_nivcsw;              /* involuntary " */
 339 };
 340
 341 struct  user32_rusage {
 342         struct user32_timeval ru_utime; /* user time used */
 343         struct user32_timeval ru_stime; /* system time used */
 344         user32_long_t   ru_maxrss;              /* max resident set size */
 345         user32_long_t   ru_ixrss;               /* integral shared memory size */
 346         user32_long_t   ru_idrss;               /* integral unshared data " */
 347         user32_long_t   ru_isrss;               /* integral unshared stack " */
 348         user32_long_t   ru_minflt;              /* page reclaims */
 349         user32_long_t   ru_majflt;              /* page faults */
 350         user32_long_t   ru_nswap;               /* swaps */
 351         user32_long_t   ru_inblock;             /* block input operations */
 352         user32_long_t   ru_oublock;             /* block output operations */
 353         user32_long_t   ru_msgsnd;              /* messages sent */
 354         user32_long_t   ru_msgrcv;              /* messages received */
 355         user32_long_t   ru_nsignals;    /* signals received */
 356         user32_long_t   ru_nvcsw;               /* voluntary context switches */
 357         user32_long_t   ru_nivcsw;              /* involuntary " */
 358 };
 359
 360 #endif /* KERNEL */
 361
 362
 363 /*****
 364  * RESOURCE LIMITS
 365  */
 366
 367 /*
 368  * Symbolic constants for resource limits; since all limits are representable
 369  * as a type rlim_t, we are permitted to define RLIM_SAVED_* in terms of
 370  * RLIM_INFINITY.
 371  */
 372 #define RLIM_INFINITY   (((__uint64_t)1 << 63) - 1)     /* no limit */
 373 #define RLIM_SAVED_MAX  RLIM_INFINITY   /* Unrepresentable hard limit */
 374 #define RLIM_SAVED_CUR  RLIM_INFINITY   /* Unrepresentable soft limit */
 375
 376 /*
 377  * Possible values of the first parameter to getrlimit()/setrlimit(), to
 378  * indicate for which resource the operation is being performed.
 379  */
 380 #define RLIMIT_CPU      0               /* cpu time per process */
 381 #define RLIMIT_FSIZE    1               /* file size */
 382 #define RLIMIT_DATA     2               /* data segment size */
 383 #define RLIMIT_STACK    3               /* stack size */
 384 #define RLIMIT_CORE     4               /* core file size */
 385 #define RLIMIT_AS       5               /* address space (resident set size) */
 386 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
 387 #define RLIMIT_RSS      RLIMIT_AS       /* source compatibility alias */
 388 #define RLIMIT_MEMLOCK  6               /* locked-in-memory address space */
 389 #define RLIMIT_NPROC    7               /* number of processes */
 390 #endif  /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
 391 #define RLIMIT_NOFILE   8               /* number of open files */
 392 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
 393 #define RLIM_NLIMITS    9               /* total number of resource limits */
 394 #endif  /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
 395 #define _RLIMIT_POSIX_FLAG      0x1000  /* Set bit for strict POSIX */
 396
 397 /*
 398  * A structure representing a resource limit.  The address of an instance
 399  * of this structure is the second parameter to getrlimit()/setrlimit().
 400  */
 401 struct rlimit {
 402         rlim_t  rlim_cur;               /* current (soft) limit */
 403         rlim_t  rlim_max;               /* maximum value for rlim_cur */
 404 };
 405
 406 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
 407 /*
 408  * proc_rlimit_control()
 409  *
 410  * Resource limit flavors
 411  */
 412 #define RLIMIT_WAKEUPS_MONITOR          0x1 /* Configure the wakeups monitor. */
 413 #define RLIMIT_CPU_USAGE_MONITOR        0x2 /* Configure the CPU usage monitor. */
 414 #define RLIMIT_THREAD_CPULIMITS         0x3 /* Configure a blocking, per-thread, CPU limits. */
 415
 416 /*
 417  * Flags for wakeups monitor control.
 418  */
 419 #define WAKEMON_ENABLE                  0x01
 420 #define WAKEMON_DISABLE                 0x02
 421 #define WAKEMON_GET_PARAMS              0x04
 422 #define WAKEMON_SET_DEFAULTS            0x08
 423 #define WAKEMON_MAKE_FATAL              0x10 /* Configure the task so that violations are fatal. */
 424 /*
 425  * Flags for CPU usage monitor control.
 426  */
 427 #define CPUMON_MAKE_FATAL               0x1000
 428
 429 struct proc_rlimit_control_wakeupmon {
 430         uint32_t wm_flags;
 431         int32_t wm_rate;
 432 };
 433
 434 /* I/O type */
 435 #define IOPOL_TYPE_DISK 0
 436 #if PRIVATE
 437 #define IOPOL_TYPE_VFS_HFS_CASE_SENSITIVITY 1
 438 #endif
 439
 440 /* scope */
 441 #define IOPOL_SCOPE_PROCESS   0
 442 #define IOPOL_SCOPE_THREAD    1
 443 #define IOPOL_SCOPE_DARWIN_BG 2
 444
 445 /* I/O Priority */
 446 #define IOPOL_DEFAULT           0
 447 #define IOPOL_IMPORTANT         1
 448 #define IOPOL_PASSIVE           2
 449 #define IOPOL_THROTTLE          3
 450 #define IOPOL_UTILITY           4
 451 #define IOPOL_STANDARD          5
 452
 453 /* compatibility with older names */
 454 #define IOPOL_APPLICATION       IOPOL_STANDARD
 455 #define IOPOL_NORMAL            IOPOL_IMPORTANT
 456
 457 #if PRIVATE
 458 #define IOPOL_VFS_HFS_CASE_SENSITIVITY_DEFAULT  0
 459 #define IOPOL_VFS_HFS_CASE_SENSITIVITY_FORCE_CASE_SENSITIVE     1
 460 #endif
 461
 462 #ifdef PRIVATE
 463 /*
 464  * Structures for use in communicating via iopolicysys() between Libc and the
 465  * kernel.  Not to be used by user programs directly.
 466  */
 467
 468 /*
 469  * the command to iopolicysys()
 470  */
 471 #define IOPOL_CMD_GET           0x00000001      /* Get I/O policy */
 472 #define IOPOL_CMD_SET           0x00000002      /* Set I/O policy */
 473
 474 /*
 475  * Second parameter to iopolicysys()
 476  */
 477 struct _iopol_param_t {
 478         int iop_scope;  /* current process or a thread */
 479         int iop_iotype;
 480         int iop_policy;
 481 };
 482
 483 #endif  /* PRIVATE */
 484 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
 485
 486 #ifndef KERNEL
 487
 488 __BEGIN_DECLS
 489 int     getpriority(int, id_t);
 490 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
 491 int     getiopolicy_np(int, int) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
 492 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
 493 int     getrlimit(int, struct rlimit *) __DARWIN_ALIAS(getrlimit);
 494 int     getrusage(int, struct rusage *);
 495 int     setpriority(int, id_t, int);
 496 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
 497 int     setiopolicy_np(int, int, int) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
 498 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
 499 int     setrlimit(int, const struct rlimit *) __DARWIN_ALIAS(setrlimit);
 500 __END_DECLS
 501
 502 #endif  /* !KERNEL */
 503 #endif  /* !_SYS_RESOURCE_H_ */