resource.h 6.1 KB

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  1. /* Bit values & structures for resource limits. Linux/m68k version.
  2. Copyright (C) 1994,1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, see
  14. <http://www.gnu.org/licenses/>. */
  15. #ifndef _SYS_RESOURCE_H
  16. # error "Never use <bits/resource.h> directly; include <sys/resource.h> instead."
  17. #endif
  18. #include <bits/types.h>
  19. /* Transmute defines to enumerations. The macro re-definitions are
  20. necessary because some programs want to test for operating system
  21. features with #ifdef RUSAGE_SELF. In ISO C the reflexive
  22. definition is a no-op. */
  23. /* Kinds of resource limit. */
  24. enum __rlimit_resource
  25. {
  26. /* Per-process CPU limit, in seconds. */
  27. RLIMIT_CPU = 0,
  28. #define RLIMIT_CPU RLIMIT_CPU
  29. /* Largest file that can be created, in bytes. */
  30. RLIMIT_FSIZE = 1,
  31. #define RLIMIT_FSIZE RLIMIT_FSIZE
  32. /* Maximum size of data segment, in bytes. */
  33. RLIMIT_DATA = 2,
  34. #define RLIMIT_DATA RLIMIT_DATA
  35. /* Maximum size of stack segment, in bytes. */
  36. RLIMIT_STACK = 3,
  37. #define RLIMIT_STACK RLIMIT_STACK
  38. /* Largest core file that can be created, in bytes. */
  39. RLIMIT_CORE = 4,
  40. #define RLIMIT_CORE RLIMIT_CORE
  41. /* Largest resident set size, in bytes.
  42. This affects swapping; processes that are exceeding their
  43. resident set size will be more likely to have physical memory
  44. taken from them. */
  45. RLIMIT_RSS = 5,
  46. #define RLIMIT_RSS RLIMIT_RSS
  47. /* Number of open files. */
  48. RLIMIT_NOFILE = 7,
  49. RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same. */
  50. #define RLIMIT_NOFILE RLIMIT_NOFILE
  51. #define RLIMIT_OFILE RLIMIT_OFILE
  52. /* Address space limit. */
  53. RLIMIT_AS = 9,
  54. #define RLIMIT_AS RLIMIT_AS
  55. /* Number of processes. */
  56. RLIMIT_NPROC = 6,
  57. #define RLIMIT_NPROC RLIMIT_NPROC
  58. /* Locked-in-memory address space. */
  59. RLIMIT_MEMLOCK = 8,
  60. #define RLIMIT_MEMLOCK RLIMIT_MEMLOCK
  61. /* Maximum number of file locks. */
  62. RLIMIT_LOCKS = 10,
  63. #define RLIMIT_LOCKS RLIMIT_LOCKS
  64. RLIMIT_NLIMITS = 11,
  65. RLIM_NLIMITS = RLIMIT_NLIMITS
  66. #define RLIMIT_NLIMITS RLIMIT_NLIMITS
  67. #define RLIM_NLIMITS RLIM_NLIMITS
  68. };
  69. /* Value to indicate that there is no limit. */
  70. #ifndef __USE_FILE_OFFSET64
  71. # define RLIM_INFINITY ((unsigned long)(~0UL))
  72. #else
  73. # define RLIM_INFINITY 0xffffffffffffffffuLL
  74. #endif
  75. #ifdef __USE_LARGEFILE64
  76. # define RLIM64_INFINITY 0xffffffffffffffffuLL
  77. #endif
  78. /* We can represent all limits. */
  79. #define RLIM_SAVED_MAX RLIM_INFINITY
  80. #define RLIM_SAVED_CUR RLIM_INFINITY
  81. /* Type for resource quantity measurement. */
  82. #ifndef __USE_FILE_OFFSET64
  83. typedef __rlim_t rlim_t;
  84. #else
  85. typedef __rlim64_t rlim_t;
  86. #endif
  87. #ifdef __USE_LARGEFILE64
  88. typedef __rlim64_t rlim64_t;
  89. #endif
  90. struct rlimit
  91. {
  92. /* The current (soft) limit. */
  93. rlim_t rlim_cur;
  94. /* The hard limit. */
  95. rlim_t rlim_max;
  96. };
  97. #ifdef __USE_LARGEFILE64
  98. struct rlimit64
  99. {
  100. /* The current (soft) limit. */
  101. rlim64_t rlim_cur;
  102. /* The hard limit. */
  103. rlim64_t rlim_max;
  104. };
  105. #endif
  106. /* Whose usage statistics do you want? */
  107. enum __rusage_who
  108. {
  109. /* The calling process. */
  110. RUSAGE_SELF = 0,
  111. #define RUSAGE_SELF RUSAGE_SELF
  112. /* All of its terminated child processes. */
  113. RUSAGE_CHILDREN = -1,
  114. #define RUSAGE_CHILDREN RUSAGE_CHILDREN
  115. /* Both. */
  116. RUSAGE_BOTH = -2
  117. #define RUSAGE_BOTH RUSAGE_BOTH
  118. };
  119. #define __need_timeval
  120. #include <bits/time.h> /* For `struct timeval'. */
  121. /* Structure which says how much of each resource has been used. */
  122. struct rusage
  123. {
  124. /* Total amount of user time used. */
  125. struct timeval ru_utime;
  126. /* Total amount of system time used. */
  127. struct timeval ru_stime;
  128. /* Maximum resident set size (in kilobytes). */
  129. long ru_maxrss;
  130. /* Amount of sharing of text segment memory
  131. with other processes (kilobyte-seconds). */
  132. long ru_ixrss;
  133. /* Amount of data segment memory used (kilobyte-seconds). */
  134. long ru_idrss;
  135. /* Amount of stack memory used (kilobyte-seconds). */
  136. long ru_isrss;
  137. /* Number of soft page faults (i.e. those serviced by reclaiming
  138. a page from the list of pages awaiting reallocation. */
  139. long ru_minflt;
  140. /* Number of hard page faults (i.e. those that required I/O). */
  141. long ru_majflt;
  142. /* Number of times a process was swapped out of physical memory. */
  143. long ru_nswap;
  144. /* Number of input operations via the file system. Note: This
  145. and `ru_oublock' do not include operations with the cache. */
  146. long ru_inblock;
  147. /* Number of output operations via the file system. */
  148. long ru_oublock;
  149. /* Number of IPC messages sent. */
  150. long ru_msgsnd;
  151. /* Number of IPC messages received. */
  152. long ru_msgrcv;
  153. /* Number of signals delivered. */
  154. long ru_nsignals;
  155. /* Number of voluntary context switches, i.e. because the process
  156. gave up the process before it had to (usually to wait for some
  157. resource to be available). */
  158. long ru_nvcsw;
  159. /* Number of involuntary context switches, i.e. a higher priority process
  160. became runnable or the current process used up its time slice. */
  161. long ru_nivcsw;
  162. };
  163. /* Priority limits. */
  164. #define PRIO_MIN -20 /* Minimum priority a process can have. */
  165. #define PRIO_MAX 20 /* Maximum priority a process can have. */
  166. /* The type of the WHICH argument to `getpriority' and `setpriority',
  167. indicating what flavor of entity the WHO argument specifies. */
  168. enum __priority_which
  169. {
  170. PRIO_PROCESS = 0, /* WHO is a process ID. */
  171. #define PRIO_PROCESS PRIO_PROCESS
  172. PRIO_PGRP = 1, /* WHO is a process group ID. */
  173. #define PRIO_PGRP PRIO_PGRP
  174. PRIO_USER = 2 /* WHO is a user ID. */
  175. #define PRIO_USER PRIO_USER
  176. };