resource.h 7.0 KB

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  1. /* Bit values & structures for resource limits. Linux/MIPS version.
  2. Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2004, 2005, 2006
  3. Free Software Foundation, Inc.
  4. This file is part of the GNU C Library.
  5. The GNU C Library is free software; you can redistribute it and/or
  6. modify it under the terms of the GNU Lesser General Public
  7. License as published by the Free Software Foundation; either
  8. version 2.1 of the License, or (at your option) any later version.
  9. The GNU C Library is distributed in the hope that it will be useful,
  10. but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. Lesser General Public License for more details.
  13. You should have received a copy of the GNU Lesser General Public
  14. License along with the GNU C Library; if not, see
  15. <http://www.gnu.org/licenses/>. */
  16. #ifndef _SYS_RESOURCE_H
  17. # error "Never use <bits/resource.h> directly; include <sys/resource.h> instead."
  18. #endif
  19. #include <bits/types.h>
  20. /* Transmute defines to enumerations. The macro re-definitions are
  21. necessary because some programs want to test for operating system
  22. features with #ifdef RUSAGE_SELF. In ISO C the reflexive
  23. definition is a no-op. */
  24. /* Kinds of resource limit. */
  25. enum __rlimit_resource
  26. {
  27. /* Per-process CPU limit, in seconds. */
  28. RLIMIT_CPU = 0,
  29. #define RLIMIT_CPU RLIMIT_CPU
  30. /* Largest file that can be created, in bytes. */
  31. RLIMIT_FSIZE = 1,
  32. #define RLIMIT_FSIZE RLIMIT_FSIZE
  33. /* Maximum size of data segment, in bytes. */
  34. RLIMIT_DATA = 2,
  35. #define RLIMIT_DATA RLIMIT_DATA
  36. /* Maximum size of stack segment, in bytes. */
  37. RLIMIT_STACK = 3,
  38. #define RLIMIT_STACK RLIMIT_STACK
  39. /* Largest core file that can be created, in bytes. */
  40. RLIMIT_CORE = 4,
  41. #define RLIMIT_CORE RLIMIT_CORE
  42. /* Largest resident set size, in bytes.
  43. This affects swapping; processes that are exceeding their
  44. resident set size will be more likely to have physical memory
  45. taken from them. */
  46. __RLIMIT_RSS = 7,
  47. #define RLIMIT_RSS __RLIMIT_RSS
  48. /* Number of open files. */
  49. RLIMIT_NOFILE = 5,
  50. __RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same. */
  51. #define RLIMIT_NOFILE RLIMIT_NOFILE
  52. #define RLIMIT_OFILE __RLIMIT_OFILE
  53. /* Address space limit (?) */
  54. RLIMIT_AS = 6,
  55. #define RLIMIT_AS RLIMIT_AS
  56. /* Number of processes. */
  57. __RLIMIT_NPROC = 8,
  58. #define RLIMIT_NPROC __RLIMIT_NPROC
  59. /* Locked-in-memory address space. */
  60. __RLIMIT_MEMLOCK = 9,
  61. #define RLIMIT_MEMLOCK __RLIMIT_MEMLOCK
  62. /* Maximum number of file locks. */
  63. __RLIMIT_LOCKS = 10,
  64. #define RLIMIT_LOCKS __RLIMIT_LOCKS
  65. /* Maximum number of pending signals. */
  66. __RLIMIT_SIGPENDING = 11,
  67. #define RLIMIT_SIGPENDING __RLIMIT_SIGPENDING
  68. /* Maximum bytes in POSIX message queues. */
  69. __RLIMIT_MSGQUEUE = 12,
  70. #define RLIMIT_MSGQUEUE __RLIMIT_MSGQUEUE
  71. /* Maximum nice priority allowed to raise to.
  72. Nice levels 19 .. -20 correspond to 0 .. 39
  73. values of this resource limit. */
  74. __RLIMIT_NICE = 13,
  75. #define RLIMIT_NICE __RLIMIT_NICE
  76. /* Maximum realtime priority allowed for non-priviledged
  77. processes. */
  78. __RLIMIT_RTPRIO = 14,
  79. #define RLIMIT_RTPRIO __RLIMIT_RTPRIO
  80. __RLIMIT_NLIMITS = 15,
  81. __RLIM_NLIMITS = __RLIMIT_NLIMITS
  82. #define RLIMIT_NLIMITS __RLIMIT_NLIMITS
  83. #define RLIM_NLIMITS __RLIM_NLIMITS
  84. };
  85. /* Value to indicate that there is no limit. */
  86. #if _MIPS_SIM == _ABI64
  87. /* The N64 syscall uses this value. */
  88. # define RLIM_INFINITY 0xffffffffffffffffUL
  89. # ifdef __USE_LARGEFILE64
  90. # define RLIM64_INFINITY 0xffffffffffffffffUL
  91. # endif
  92. #else
  93. /* The O32 and N32 syscalls use 0x7fffffff. */
  94. # ifndef __USE_FILE_OFFSET64
  95. # define RLIM_INFINITY ((long int)(~0UL >> 1))
  96. # else
  97. # define RLIM_INFINITY 0x7fffffffffffffffULL
  98. # endif
  99. # ifdef __USE_LARGEFILE64
  100. # define RLIM64_INFINITY 0x7fffffffffffffffULL
  101. # endif
  102. #endif
  103. /* We can represent all limits. */
  104. #define RLIM_SAVED_MAX RLIM_INFINITY
  105. #define RLIM_SAVED_CUR RLIM_INFINITY
  106. /* Type for resource quantity measurement. */
  107. #ifndef __USE_FILE_OFFSET64
  108. typedef __rlim_t rlim_t;
  109. #else
  110. typedef __rlim64_t rlim_t;
  111. #endif
  112. #ifdef __USE_LARGEFILE64
  113. typedef __rlim64_t rlim64_t;
  114. #endif
  115. struct rlimit
  116. {
  117. /* The current (soft) limit. */
  118. rlim_t rlim_cur;
  119. /* The hard limit. */
  120. rlim_t rlim_max;
  121. };
  122. #ifdef __USE_LARGEFILE64
  123. struct rlimit64
  124. {
  125. /* The current (soft) limit. */
  126. rlim64_t rlim_cur;
  127. /* The hard limit. */
  128. rlim64_t rlim_max;
  129. };
  130. #endif
  131. /* Whose usage statistics do you want? */
  132. enum __rusage_who
  133. {
  134. /* The calling process. */
  135. RUSAGE_SELF = 0,
  136. #define RUSAGE_SELF RUSAGE_SELF
  137. /* All of its terminated child processes. */
  138. RUSAGE_CHILDREN = -1
  139. #define RUSAGE_CHILDREN RUSAGE_CHILDREN
  140. };
  141. #define __need_timeval
  142. #include <bits/time.h> /* For `struct timeval'. */
  143. /* Structure which says how much of each resource has been used. */
  144. struct rusage
  145. {
  146. /* Total amount of user time used. */
  147. struct timeval ru_utime;
  148. /* Total amount of system time used. */
  149. struct timeval ru_stime;
  150. /* Maximum resident set size (in kilobytes). */
  151. long int ru_maxrss;
  152. /* Amount of sharing of text segment memory
  153. with other processes (kilobyte-seconds). */
  154. long int ru_ixrss;
  155. /* Amount of data segment memory used (kilobyte-seconds). */
  156. long int ru_idrss;
  157. /* Amount of stack memory used (kilobyte-seconds). */
  158. long int ru_isrss;
  159. /* Number of soft page faults (i.e. those serviced by reclaiming
  160. a page from the list of pages awaiting reallocation. */
  161. long int ru_minflt;
  162. /* Number of hard page faults (i.e. those that required I/O). */
  163. long int ru_majflt;
  164. /* Number of times a process was swapped out of physical memory. */
  165. long int ru_nswap;
  166. /* Number of input operations via the file system. Note: This
  167. and `ru_oublock' do not include operations with the cache. */
  168. long int ru_inblock;
  169. /* Number of output operations via the file system. */
  170. long int ru_oublock;
  171. /* Number of IPC messages sent. */
  172. long int ru_msgsnd;
  173. /* Number of IPC messages received. */
  174. long int ru_msgrcv;
  175. /* Number of signals delivered. */
  176. long int ru_nsignals;
  177. /* Number of voluntary context switches, i.e. because the process
  178. gave up the process before it had to (usually to wait for some
  179. resource to be available). */
  180. long int ru_nvcsw;
  181. /* Number of involuntary context switches, i.e. a higher priority process
  182. became runnable or the current process used up its time slice. */
  183. long int ru_nivcsw;
  184. };
  185. /* Priority limits. */
  186. #define PRIO_MIN -20 /* Minimum priority a process can have. */
  187. #define PRIO_MAX 20 /* Maximum priority a process can have. */
  188. /* The type of the WHICH argument to `getpriority' and `setpriority',
  189. indicating what flavor of entity the WHO argument specifies. */
  190. enum __priority_which
  191. {
  192. PRIO_PROCESS = 0, /* WHO is a process ID. */
  193. #define PRIO_PROCESS PRIO_PROCESS
  194. PRIO_PGRP = 1, /* WHO is a process group ID. */
  195. #define PRIO_PGRP PRIO_PGRP
  196. PRIO_USER = 2 /* WHO is a user ID. */
  197. #define PRIO_USER PRIO_USER
  198. };