3 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
4 2006, 2007 Red Hat, Inc.
6 This file is part of Cygwin.
8 This software is a copyrighted work licensed under the terms of the
9 Cygwin license. Please consult the file "CYGWIN_LICENSE" for
28 long max = getdtablesize ();
35 get_page_size (int in)
37 return getpagesize ();
41 get_nproc_values (int in)
45 case _SC_NPROCESSORS_CONF:
46 case _SC_NPROCESSORS_ONLN:
47 if (!wincap.supports_smp ())
51 if (wincap.supports_smp ())
54 SYSTEM_BASIC_INFORMATION sbi;
55 if ((ret = NtQuerySystemInformation (SystemBasicInformation,
60 __seterrno_from_nt_status (ret);
61 debug_printf ("NtQuerySystemInformation: ret %d, Dos(ret) %E",
67 case _SC_NPROCESSORS_CONF:
68 return sbi.NumberProcessors;
69 case _SC_NPROCESSORS_ONLN:
73 if (sbi.ActiveProcessors & 1)
75 while (sbi.ActiveProcessors >>= 1);
79 return sbi.NumberOfPhysicalPages
80 / (getpagesize () / getsystempagesize ());
90 if (wincap.supports_smp ())
93 SYSTEM_PERFORMANCE_INFORMATION spi;
94 if ((ret = NtQuerySystemInformation (SystemPerformanceInformation,
99 __seterrno_from_nt_status (ret);
100 debug_printf ("NtQuerySystemInformation: ret %d, Dos(ret) %E",
104 return spi.AvailablePages / (getpagesize () / getsystempagesize ());
109 enum sc_type { nsup, cons, func };
121 {cons, {c:ARG_MAX}}, /* 0, _SC_ARG_MAX */
122 {cons, {c:CHILD_MAX}}, /* 1, _SC_CHILD_MAX */
123 {cons, {c:CLOCKS_PER_SEC}}, /* 2, _SC_CLK_TCK */
124 {cons, {c:NGROUPS_MAX}}, /* 3, _SC_NGROUPS_MAX */
125 {func, {f:get_open_max}}, /* 4, _SC_OPEN_MAX */
126 {cons, {c:_POSIX_JOB_CONTROL}}, /* 5, _SC_JOB_CONTROL */
127 {cons, {c:_POSIX_SAVED_IDS}}, /* 6, _SC_SAVED_IDS */
128 {cons, {c:_POSIX_VERSION}}, /* 7, _SC_VERSION */
129 {func, {f:get_page_size}}, /* 8, _SC_PAGESIZE */
130 {func, {f:get_nproc_values}}, /* 9, _SC_NPROCESSORS_CONF */
131 {func, {f:get_nproc_values}}, /* 10, _SC_NPROCESSORS_ONLN */
132 {func, {f:get_nproc_values}}, /* 11, _SC_PHYS_PAGES */
133 {func, {f:get_avphys}}, /* 12, _SC_AVPHYS_PAGES */
134 {cons, {c:MQ_OPEN_MAX}}, /* 13, _SC_MQ_OPEN_MAX */
135 {cons, {c:MQ_PRIO_MAX}}, /* 14, _SC_MQ_PRIO_MAX */
136 {cons, {c:RTSIG_MAX}}, /* 15, _SC_RTSIG_MAX */
137 {cons, {c:-1L}}, /* 16, _SC_SEM_NSEMS_MAX */
138 {cons, {c:SEM_VALUE_MAX}}, /* 17, _SC_SEM_VALUE_MAX */
139 {cons, {c:SIGQUEUE_MAX}}, /* 18, _SC_SIGQUEUE_MAX */
140 {cons, {c:TIMER_MAX}}, /* 19, _SC_TIMER_MAX */
141 {nsup, {c:0}}, /* 20, _SC_TZNAME_MAX */
142 {cons, {c:-1L}}, /* 21, _SC_ASYNCHRONOUS_IO */
143 {cons, {c:_POSIX_FSYNC}}, /* 22, _SC_FSYNC */
144 {cons, {c:_POSIX_MAPPED_FILES}}, /* 23, _SC_MAPPED_FILES */
145 {cons, {c:-1L}}, /* 24, _SC_MEMLOCK */
146 {cons, {c:_POSIX_MEMLOCK_RANGE}}, /* 25, _SC_MEMLOCK_RANGE */
147 {cons, {c:_POSIX_MEMORY_PROTECTION}}, /* 26, _SC_MEMORY_PROTECTION */
148 {cons, {c:_POSIX_MESSAGE_PASSING}}, /* 27, _SC_MESSAGE_PASSING */
149 {cons, {c:-1L}}, /* 28, _SC_PRIORITIZED_IO */
150 {cons, {c:_POSIX_REALTIME_SIGNALS}}, /* 29, _SC_REALTIME_SIGNALS */
151 {cons, {c:_POSIX_SEMAPHORES}}, /* 30, _SC_SEMAPHORES */
152 {cons, {c:_POSIX_SHARED_MEMORY_OBJECTS}}, /* 31, _SC_SHARED_MEMORY_OBJECTS */
153 {cons, {c:_POSIX_SYNCHRONIZED_IO}}, /* 32, _SC_SYNCHRONIZED_IO */
154 {cons, {c:_POSIX_TIMERS}}, /* 33, _SC_TIMERS */
155 {nsup, {c:0}}, /* 34, _SC_AIO_LISTIO_MAX */
156 {nsup, {c:0}}, /* 35, _SC_AIO_MAX */
157 {nsup, {c:0}}, /* 36, _SC_AIO_PRIO_DELTA_MAX */
158 {nsup, {c:0}}, /* 37, _SC_DELAYTIMER_MAX */
159 {cons, {c:PTHREAD_KEYS_MAX}}, /* 38, _SC_THREAD_KEYS_MAX */
160 {cons, {c:PTHREAD_STACK_MIN}}, /* 39, _SC_THREAD_STACK_MIN */
161 {cons, {c:-1L}}, /* 40, _SC_THREAD_THREADS_MAX */
162 {cons, {c:TTY_NAME_MAX}}, /* 41, _SC_TTY_NAME_MAX */
163 {cons, {c:_POSIX_THREADS}}, /* 42, _SC_THREADS */
164 {cons, {c:-1L}}, /* 43, _SC_THREAD_ATTR_STACKADDR */
165 {cons, {c:_POSIX_THREAD_ATTR_STACKSIZE}}, /* 44, _SC_THREAD_ATTR_STACKSIZE */
166 {cons, {c:_POSIX_THREAD_PRIORITY_SCHEDULING}}, /* 45, _SC_THREAD_PRIORITY_SCHEDULING */
167 {cons, {c:-1L}}, /* 46, _SC_THREAD_PRIO_INHERIT */
168 {cons, {c:-1L}}, /* 47, _SC_THREAD_PRIO_PROTECT */
169 {cons, {c:_POSIX_THREAD_PROCESS_SHARED}}, /* 48, _SC_THREAD_PROCESS_SHARED */
170 {cons, {c:_POSIX_THREAD_SAFE_FUNCTIONS}}, /* 49, _SC_THREAD_SAFE_FUNCTIONS */
171 {cons, {c:16384L}}, /* 50, _SC_GETGR_R_SIZE_MAX */
172 {cons, {c:16384L}}, /* 51, _SC_GETPW_R_SIZE_MAX */
173 {cons, {c:LOGIN_NAME_MAX}}, /* 52, _SC_LOGIN_NAME_MAX */
174 {cons, {c:PTHREAD_DESTRUCTOR_ITERATIONS}}, /* 53, _SC_THREAD_DESTRUCTOR_ITERATIONS */
175 {cons, {c:_POSIX_ADVISORY_INFO}}, /* 54, _SC_ADVISORY_INFO */
176 {cons, {c:ATEXIT_MAX}}, /* 55, _SC_ATEXIT_MAX */
177 {cons, {c:-1L}}, /* 56, _SC_BARRIERS */
178 {cons, {c:BC_BASE_MAX}}, /* 57, _SC_BC_BASE_MAX */
179 {cons, {c:BC_DIM_MAX}}, /* 58, _SC_BC_DIM_MAX */
180 {cons, {c:BC_SCALE_MAX}}, /* 59, _SC_BC_SCALE_MAX */
181 {cons, {c:BC_STRING_MAX}}, /* 60, _SC_BC_STRING_MAX */
182 {cons, {c:-1L}}, /* 61, _SC_CLOCK_SELECTION */
183 {nsup, {c:0}}, /* 62, _SC_COLL_WEIGHTS_MAX */
184 {cons, {c:-1L}}, /* 63, _SC_CPUTIME */
185 {cons, {c:EXPR_NEST_MAX}}, /* 64, _SC_EXPR_NEST_MAX */
186 {cons, {c:HOST_NAME_MAX}}, /* 65, _SC_HOST_NAME_MAX */
187 {cons, {c:IOV_MAX}}, /* 66, _SC_IOV_MAX */
188 {cons, {c:_POSIX_IPV6}}, /* 67, _SC_IPV6 */
189 {cons, {c:LINE_MAX}}, /* 68, _SC_LINE_MAX */
190 {cons, {c:-1L}}, /* 69, _SC_MONOTONIC_CLOCK */
191 {cons, {c:_POSIX_RAW_SOCKETS}}, /* 70, _SC_RAW_SOCKETS */
192 {cons, {c:_POSIX_READER_WRITER_LOCKS}}, /* 71, _SC_READER_WRITER_LOCKS */
193 {cons, {c:_POSIX_REGEXP}}, /* 72, _SC_REGEXP */
194 {cons, {c:RE_DUP_MAX}}, /* 73, _SC_RE_DUP_MAX */
195 {cons, {c:_POSIX_SHELL}}, /* 74, _SC_SHELL */
196 {cons, {c:-1L}}, /* 75, _SC_SPAWN */
197 {cons, {c:-1L}}, /* 76, _SC_SPIN_LOCKS */
198 {cons, {c:-1L}}, /* 77, _SC_SPORADIC_SERVER */
199 {nsup, {c:0}}, /* 78, _SC_SS_REPL_MAX */
200 {cons, {c:SYMLOOP_MAX}}, /* 79, _SC_SYMLOOP_MAX */
201 {cons, {c:-1L}}, /* 80, _SC_THREAD_CPUTIME */
202 {cons, {c:-1L}}, /* 81, _SC_THREAD_SPORADIC_SERVER */
203 {cons, {c:-1L}}, /* 82, _SC_TIMEOUTS */
204 {cons, {c:-1L}}, /* 83, _SC_TRACE */
205 {cons, {c:-1L}}, /* 84, _SC_TRACE_EVENT_FILTER */
206 {nsup, {c:0}}, /* 85, _SC_TRACE_EVENT_NAME_MAX */
207 {cons, {c:-1L}}, /* 86, _SC_TRACE_INHERIT */
208 {cons, {c:-1L}}, /* 87, _SC_TRACE_LOG */
209 {nsup, {c:0}}, /* 88, _SC_TRACE_NAME_MAX */
210 {nsup, {c:0}}, /* 89, _SC_TRACE_SYS_MAX */
211 {nsup, {c:0}}, /* 90, _SC_TRACE_USER_EVENT_MAX */
212 {cons, {c:-1L}}, /* 91, _SC_TYPED_MEMORY_OBJECTS */
213 {cons, {c:-1L}}, /* 92, _SC_V6_ILP32_OFF32 */
214 {cons, {c:_POSIX_V6_ILP32_OFFBIG}}, /* 93, _SC_V6_ILP32_OFFBIG */
215 {cons, {c:-1L}}, /* 94, _SC_V6_LP64_OFF64 */
216 {cons, {c:-1L}}, /* 95, _SC_V6_LPBIG_OFFBIG */
217 {cons, {c:_XOPEN_CRYPT}}, /* 96, _SC_XOPEN_CRYPT */
218 {cons, {c:_XOPEN_ENH_I18N}}, /* 97, _SC_XOPEN_ENH_I18N */
219 {cons, {c:-1L}}, /* 98, _SC_XOPEN_LEGACY */
220 {cons, {c:-1L}}, /* 99, _SC_XOPEN_REALTIME */
221 {cons, {c:STREAM_MAX}}, /* 100, _SC_STREAM_MAX */
222 {cons, {c:_POSIX_PRIORITY_SCHEDULING}}, /* 101, _SC_PRIORITY_SCHEDULING */
223 {cons, {c:-1L}}, /* 102, _SC_XOPEN_REALTIME_THREADS */
224 {cons, {c:_XOPEN_SHM}}, /* 103, _SC_XOPEN_SHM */
225 {cons, {c:-1L}}, /* 104, _SC_XOPEN_STREAMS */
226 {cons, {c:-1L}}, /* 105, _SC_XOPEN_UNIX */
227 {cons, {c:_XOPEN_VERSION}}, /* 106, _SC_XOPEN_VERSION */
228 {cons, {c:_POSIX2_CHAR_TERM}}, /* 107, _SC_2_CHAR_TERM */
229 {cons, {c:_POSIX2_C_BIND}}, /* 108, _SC_2_C_BIND */
230 {cons, {c:_POSIX2_C_BIND}}, /* 109, _SC_2_C_DEV */
231 {cons, {c:-1L}}, /* 110, _SC_2_FORT_DEV */
232 {cons, {c:-1L}}, /* 111, _SC_2_FORT_RUN */
233 {cons, {c:-1L}}, /* 112, _SC_2_LOCALEDEF */
234 {cons, {c:-1L}}, /* 113, _SC_2_PBS */
235 {cons, {c:-1L}}, /* 114, _SC_2_PBS_ACCOUNTING */
236 {cons, {c:-1L}}, /* 115, _SC_2_PBS_CHECKPOINT */
237 {cons, {c:-1L}}, /* 116, _SC_2_PBS_LOCATE */
238 {cons, {c:-1L}}, /* 117, _SC_2_PBS_MESSAGE */
239 {cons, {c:-1L}}, /* 118, _SC_2_PBS_TRACK */
240 {cons, {c:_POSIX2_SW_DEV}}, /* 119, _SC_2_SW_DEV */
241 {cons, {c:_POSIX2_UPE}}, /* 120, _SC_2_UPE */
242 {cons, {c:_POSIX2_VERSION}}, /* 121, _SC_2_VERSION */
245 #define SC_MIN _SC_ARG_MAX
246 #define SC_MAX _SC_2_VERSION
248 /* sysconf: POSIX 4.8.1.1 */
249 /* Allows a portable app to determine quantities of resources or
250 presence of an option at execution time. */
254 if (in >= SC_MIN && in <= SC_MAX)
256 switch (sca[in].type)
263 return sca[in].f (in);
266 /* Unimplemented sysconf name or invalid option value. */