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libc/winsup/cygwin/sysconf.cc

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/* sysconf.cc
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#include <unistd.h>
#include <sys/param.h>
#include <sys/sysinfo.h>
#include "cygerrno.h"
#include "security.h"
#include "path.h"
#include "fhandler.h"
#include "dtable.h"
#include "pinfo.h"
#include "ntdll.h"
#include "tls_pbuf.h"
#include "cpuid.h"
#include "hires.h"
static long
get_open_max (int in)
{
long max = getdtablesize ();
if (max < OPEN_MAX)
max = OPEN_MAX;
return max;
}
static long
get_page_size (int in)
{
return wincap.allocation_granularity ();
}
static bool
__nt_query_system (PSYSTEM_BASIC_INFORMATION psbi)
{
NTSTATUS status;
status = NtQuerySystemInformation (SystemBasicInformation, (PVOID) psbi,
sizeof *psbi, NULL);
return NT_SUCCESS (status);
}
#define add_size(p,s) ((p) = ((__typeof__(p))((PBYTE)(p)+(s))))
static long
get_nproc_values (int in)
{
if (!wincap.has_processor_groups ()) /* Pre Windows 7 */
{
SYSTEM_BASIC_INFORMATION sbi;
if (!__nt_query_system (&sbi))
return -1;
switch (in)
{
case _SC_NPROCESSORS_CONF:
return sbi.NumberProcessors;
case _SC_NPROCESSORS_ONLN:
{
int i = 0;
do
if (sbi.ActiveProcessors & 1)
i++;
while (sbi.ActiveProcessors >>= 1);
return i;
}
}
}
tmp_pathbuf tp;
PSYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX lpi, plpi;
DWORD lpi_size = NT_MAX_PATH;
long cnt = 0;
lpi = (PSYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX) tp.c_get ();
if (!GetLogicalProcessorInformationEx (RelationGroup, lpi, &lpi_size))
return -1;
plpi = lpi;
for (DWORD size = lpi_size; size > 0;
size -= plpi->Size, add_size (plpi, plpi->Size))
if (plpi->Relationship == RelationGroup)
{
for (WORD i = 0; i < plpi->Group.MaximumGroupCount; ++i)
switch (in)
{
case _SC_NPROCESSORS_CONF:
cnt += plpi->Group.GroupInfo[0].MaximumProcessorCount;
break;
case _SC_NPROCESSORS_ONLN:
cnt += plpi->Group.GroupInfo[0].ActiveProcessorCount;
break;
}
}
return cnt;
}
static long
get_phys_pages (int in)
{
SYSTEM_BASIC_INFORMATION sbi;
if (!__nt_query_system (&sbi))
return -1;
return sbi.NumberOfPhysicalPages
/ (wincap.allocation_granularity () / wincap.page_size ());
}
static long
get_avphys (int in)
{
NTSTATUS status;
SYSTEM_PERFORMANCE_INFORMATION spi;
status = NtQuerySystemInformation (SystemPerformanceInformation,
(PVOID) &spi, sizeof spi, NULL);
if (!NT_SUCCESS (status))
{
__seterrno_from_nt_status (status);
debug_printf ("NtQuerySystemInformation: status %y, %E", status);
return -1;
}
return spi.AvailablePages
/ (wincap.allocation_granularity () / wincap.page_size ());
}
enum cache_level
{
LevelNone,
Level1I,
Level1D,
Level2,
Level3,
Level4
};
struct cpuid2_cache_desc
{
uint8_t desc;
cache_level level;
uint32_t size;
uint32_t assoc;
uint32_t linesize;
};
static const cpuid2_cache_desc cpuid2_cache_descriptor[] =
{
{ 0x06, Level1I, 8, 4, 32 },
{ 0x08, Level1I, 16, 4, 32 },
{ 0x09, Level1I, 32, 4, 64 },
{ 0x0a, Level1D, 8, 2, 32 },
{ 0x0c, Level1D, 16, 4, 32 },
{ 0x0d, Level1D, 16, 4, 64 },
{ 0x0e, Level1D, 24, 6, 64 },
{ 0x21, Level2, 256, 8, 64 },
{ 0x22, Level3, 512, 4, 64 },
{ 0x23, Level3, 1024, 8, 64 },
{ 0x25, Level3, 2048, 8, 64 },
{ 0x29, Level3, 4096, 8, 64 },
{ 0x2c, Level1D, 32, 8, 64 },
{ 0x30, Level1I, 32, 8, 64 },
{ 0x39, Level2, 128, 4, 64 },
{ 0x3a, Level2, 192, 6, 64 },
{ 0x3b, Level2, 128, 2, 64 },
{ 0x3c, Level2, 256, 4, 64 },
{ 0x3d, Level2, 384, 6, 64 },
{ 0x3e, Level2, 512, 4, 64 },
{ 0x3f, Level2, 256, 2, 64 },
{ 0x41, Level2, 128, 4, 32 },
{ 0x42, Level2, 256, 4, 32 },
{ 0x43, Level2, 512, 4, 32 },
{ 0x44, Level2, 1024, 4, 32 },
{ 0x45, Level2, 2048, 4, 32 },
{ 0x46, Level3, 4096, 4, 64 },
{ 0x47, Level3, 8192, 8, 64 },
{ 0x48, Level2, 3072, 12, 64 },
{ 0x49, Level3, 4096, 16, 64 },
{ 0x4a, Level3, 6144, 12, 64 },
{ 0x4b, Level3, 8192, 16, 64 },
{ 0x4c, Level3, 12288, 12, 64 },
{ 0x4d, Level3, 16384, 16, 64 },
{ 0x4e, Level2, 6144, 24, 64 },
{ 0x60, Level1D, 16, 8, 64 },
{ 0x66, Level1D, 8, 4, 64 },
{ 0x67, Level1D, 16, 4, 64 },
{ 0x68, Level1D, 32, 4, 64 },
{ 0x78, Level2, 1024, 4, 64 },
{ 0x79, Level2, 128, 8, 64 },
{ 0x7a, Level2, 256, 8, 64 },
{ 0x7b, Level2, 512, 8, 64 },
{ 0x7c, Level2, 1024, 8, 64 },
{ 0x7d, Level2, 2048, 8, 64 },
{ 0x7f, Level2, 512, 2, 64 },
{ 0x80, Level2, 512, 8, 64 },
{ 0x82, Level2, 256, 8, 32 },
{ 0x83, Level2, 512, 8, 32 },
{ 0x84, Level2, 1024, 8, 32 },
{ 0x85, Level2, 2048, 8, 32 },
{ 0x86, Level2, 512, 4, 64 },
{ 0x87, Level2, 1024, 8, 64 },
{ 0xd0, Level3, 512, 4, 64 },
{ 0xd1, Level3, 1024, 4, 64 },
{ 0xd2, Level3, 2048, 4, 64 },
{ 0xd6, Level3, 1024, 8, 64 },
{ 0xd7, Level3, 2048, 8, 64 },
{ 0xd8, Level3, 4096, 12, 64 },
{ 0xdc, Level3, 2048, 12, 64 },
{ 0xdd, Level3, 4096, 12, 64 },
{ 0xde, Level3, 8192, 12, 64 },
{ 0xe2, Level3, 2048, 16, 64 },
{ 0xe3, Level3, 4096, 16, 64 },
{ 0xe4, Level3, 8192, 16, 64 },
{ 0xea, Level3, 12288, 24, 64 },
{ 0xeb, Level3, 18432, 24, 64 },
{ 0xec, Level3, 24576, 24, 64 },
};
static int
cpuid2_cache_desc_compar (const void *key, const void *memb)
{
cpuid2_cache_desc *ckey = (cpuid2_cache_desc *) key;
cpuid2_cache_desc *cmemb = (cpuid2_cache_desc *) memb;
return ckey->desc - cmemb->desc;
}
static long
get_cpu_cache_intel_cpuid2 (int in)
{
uint32_t reg[4];
long ret = 0;
int num;
cpuid (reg, reg + 1, reg + 2, reg + 3, 0x00000002);
num = reg[0] & 0xff;
for (int i = 0; i < num; ++i)
{
cpuid (reg, reg + 1, reg + 2, reg + 3, 0x00000002);
for (int r = 0; r < 4; ++r)
{
if (reg[r] & 0x80000000)
continue;
for (int b = (r == 0) ? 1 : 0; b < 4; ++b)
{
cpuid2_cache_desc key, *cdp;
key.desc = ((uint8_t *) &reg[r])[b];
cdp = (cpuid2_cache_desc *)
bsearch (&key, cpuid2_cache_descriptor,
sizeof cpuid2_cache_descriptor
/ sizeof *cpuid2_cache_descriptor,
sizeof *cpuid2_cache_descriptor,
cpuid2_cache_desc_compar);
if (!cdp)
continue;
switch (in)
{
case _SC_LEVEL1_ICACHE_SIZE:
if (cdp->level == Level1I)
ret += cdp->size * 1024;
break;
case _SC_LEVEL1_ICACHE_ASSOC:
if (cdp->level == Level1I)
return cdp->assoc;
break;
case _SC_LEVEL1_ICACHE_LINESIZE:
if (cdp->level == Level1I)
return cdp->linesize;
break;
case _SC_LEVEL1_DCACHE_SIZE:
if (cdp->level == Level1D)
ret += cdp->size * 1024;
break;
case _SC_LEVEL1_DCACHE_ASSOC:
if (cdp->level == Level1D)
return cdp->assoc;
break;
case _SC_LEVEL1_DCACHE_LINESIZE:
if (cdp->level == Level1D)
return cdp->linesize;
break;
case _SC_LEVEL2_CACHE_SIZE:
if (cdp->level == Level2)
ret += cdp->size * 1024;
break;
case _SC_LEVEL2_CACHE_ASSOC:
if (cdp->level == Level2)
return cdp->assoc;
break;
case _SC_LEVEL2_CACHE_LINESIZE:
if (cdp->level == Level2)
return cdp->linesize;
break;
case _SC_LEVEL3_CACHE_SIZE:
if (cdp->level == Level3)
ret += cdp->size * 1024;
break;
case _SC_LEVEL3_CACHE_ASSOC:
if (cdp->level == Level3)
return cdp->assoc;
break;
case _SC_LEVEL3_CACHE_LINESIZE:
if (cdp->level == Level3)
return cdp->linesize;
break;
}
}
}
}
return ret;
}
static long
get_cpu_cache_intel_cpuid4 (int in)
{
uint32_t eax, ebx, ecx, edx;
long ret = 0;
for (int idx = 0; ; ++idx)
{
uint32_t cache_type, cur_level, assoc, part, linesize, sets;
cpuid (&eax, &ebx, &ecx, &edx, 0x00000004, idx);
if ((cache_type = (eax & 0x1f))== 0)
break;
cur_level = ((eax >> 5) & 0x7);
assoc = ((ebx >> 22) & 0x3ff) + 1;
part = ((ebx >> 12) & 0x3ff) + 1;
linesize = (ebx & 0xfff) + 1;
sets = ecx + 1;
switch (in)
{
case _SC_LEVEL1_ICACHE_SIZE:
if (cur_level == 1 && cache_type == 2)
ret += assoc * part * linesize * sets;
break;
case _SC_LEVEL1_ICACHE_ASSOC:
if (cur_level == 1 && cache_type == 2)
return assoc;
case _SC_LEVEL1_ICACHE_LINESIZE:
if (cur_level == 1 && cache_type == 2)
return linesize;
case _SC_LEVEL1_DCACHE_SIZE:
if (cur_level == 1 && cache_type == 1)
ret += assoc * part * linesize * sets;
break;
case _SC_LEVEL1_DCACHE_ASSOC:
if (cur_level == 1 && cache_type == 1)
return assoc;
case _SC_LEVEL1_DCACHE_LINESIZE:
if (cur_level == 1 && cache_type == 1)
return linesize;
case _SC_LEVEL2_CACHE_SIZE:
if (cur_level == 2)
ret += assoc * part * linesize * sets;
break;
case _SC_LEVEL2_CACHE_ASSOC:
if (cur_level == 2)
return assoc;
case _SC_LEVEL2_CACHE_LINESIZE:
if (cur_level == 2)
return linesize;
case _SC_LEVEL3_CACHE_SIZE:
if (cur_level == 3)
ret += assoc * part * linesize * sets;
break;
case _SC_LEVEL3_CACHE_ASSOC:
if (cur_level == 3)
return assoc;
case _SC_LEVEL3_CACHE_LINESIZE:
if (cur_level == 3)
return linesize;
}
}
return ret;
}
/* Also called from format_proc_cpuinfo */
long
get_cpu_cache_intel (int in, uint32_t maxf)
{
long ret = 0;
switch (in)
{
case _SC_LEVEL1_ICACHE_SIZE:
case _SC_LEVEL1_ICACHE_ASSOC:
case _SC_LEVEL1_ICACHE_LINESIZE:
case _SC_LEVEL1_DCACHE_SIZE:
case _SC_LEVEL1_DCACHE_ASSOC:
case _SC_LEVEL1_DCACHE_LINESIZE:
case _SC_LEVEL2_CACHE_SIZE:
case _SC_LEVEL2_CACHE_ASSOC:
case _SC_LEVEL2_CACHE_LINESIZE:
case _SC_LEVEL3_CACHE_SIZE:
case _SC_LEVEL3_CACHE_ASSOC:
case _SC_LEVEL3_CACHE_LINESIZE:
if (maxf >= 4)
ret = get_cpu_cache_intel_cpuid4 (in);
else if (maxf >= 2)
ret = get_cpu_cache_intel_cpuid2 (in);
break;
default:
break;
}
return ret;
}
static const long assoc[16] = { 0, 1, 2, 2, 4, 4, 8, 8,
16, 16, 32, 48, 64, 96, 128, 0x8000 };
/* Also called from format_proc_cpuinfo */
long
get_cpu_cache_amd (int in, uint32_t maxe)
{
uint32_t eax, ebx, ecx, edx;
long ret = 0;
if (in >= _SC_LEVEL1_ICACHE_SIZE && in <= _SC_LEVEL1_DCACHE_LINESIZE
&& maxe >= 0x80000005)
cpuid (&eax, &ebx, &ecx, &edx, 0x80000005);
else if (in >= _SC_LEVEL2_CACHE_SIZE && in <= _SC_LEVEL3_CACHE_LINESIZE
&& maxe >= 0x80000006)
cpuid (&eax, &ebx, &ecx, &edx, 0x80000006);
else
return 0;
switch (in)
{
case _SC_LEVEL1_ICACHE_SIZE:
ret = (edx & 0xff000000) >> 14;
break;
case _SC_LEVEL1_ICACHE_ASSOC:
ret = (edx & 0xff0000) >> 16;
if (ret == 0xff)
ret = 0x8000;
break;
case _SC_LEVEL1_ICACHE_LINESIZE:
ret = (edx & 0xff);
break;
case _SC_LEVEL1_DCACHE_SIZE:
ret = (ecx & 0xff000000) >> 14;
break;
case _SC_LEVEL1_DCACHE_ASSOC:
ret = (ecx & 0xff0000) >> 16;
if (ret == 0xff)
ret = 0x8000;
break;
case _SC_LEVEL1_DCACHE_LINESIZE:
ret = (ecx & 0xff);
break;
case _SC_LEVEL2_CACHE_SIZE:
ret = (ecx & 0xffff0000) >> 6;
break;
case _SC_LEVEL2_CACHE_ASSOC:
ret = assoc[(ecx & 0xf000) >> 12];
break;
case _SC_LEVEL2_CACHE_LINESIZE:
ret = (ecx & 0xff);
break;
case _SC_LEVEL3_CACHE_SIZE:
ret = (long) ((edx & 0xfffc0000) >> 18) * 512 * 1024;
break;
case _SC_LEVEL3_CACHE_ASSOC:
ret = assoc[(edx & 0xf000) >> 12];
break;
case _SC_LEVEL3_CACHE_LINESIZE:
ret = (edx & 0xff);
break;
default:
break;
}
return ret;
}
static long
get_cpu_cache (int in)
{
uint32_t maxf, vendor_id[4];
cpuid (&maxf, &vendor_id[0], &vendor_id[2], &vendor_id[1], 0x00000000);
vendor_id[3] = 0;
if (!strcmp ((char*) vendor_id, "GenuineIntel"))
return get_cpu_cache_intel (in, maxf & 0xffff);
else if (!strcmp ((char*)vendor_id, "AuthenticAMD"))
{
uint32_t maxe = 0, unused;
cpuid (&maxe, &unused, &unused, &unused, 0x80000000);
return get_cpu_cache_amd (in, maxe);
}
return 0;
}
enum sc_type { nsup, cons, func };
static struct
{
sc_type type;
union
{
long c;
long (*f)(int);
};
} sca[] =
{
{cons, {c:ARG_MAX}}, /* 0, _SC_ARG_MAX */
{cons, {c:CHILD_MAX}}, /* 1, _SC_CHILD_MAX */
{cons, {c:CLOCKS_PER_SEC}}, /* 2, _SC_CLK_TCK */
{cons, {c:NGROUPS_MAX}}, /* 3, _SC_NGROUPS_MAX */
{func, {f:get_open_max}}, /* 4, _SC_OPEN_MAX */
{cons, {c:_POSIX_JOB_CONTROL}}, /* 5, _SC_JOB_CONTROL */
{cons, {c:_POSIX_SAVED_IDS}}, /* 6, _SC_SAVED_IDS */
{cons, {c:_POSIX_VERSION}}, /* 7, _SC_VERSION */
{func, {f:get_page_size}}, /* 8, _SC_PAGESIZE */
{func, {f:get_nproc_values}}, /* 9, _SC_NPROCESSORS_CONF */
{func, {f:get_nproc_values}}, /* 10, _SC_NPROCESSORS_ONLN */
{func, {f:get_phys_pages}}, /* 11, _SC_PHYS_PAGES */
{func, {f:get_avphys}}, /* 12, _SC_AVPHYS_PAGES */
{cons, {c:MQ_OPEN_MAX}}, /* 13, _SC_MQ_OPEN_MAX */
{cons, {c:MQ_PRIO_MAX}}, /* 14, _SC_MQ_PRIO_MAX */
{cons, {c:RTSIG_MAX}}, /* 15, _SC_RTSIG_MAX */
{cons, {c:-1L}}, /* 16, _SC_SEM_NSEMS_MAX */
{cons, {c:SEM_VALUE_MAX}}, /* 17, _SC_SEM_VALUE_MAX */
{cons, {c:SIGQUEUE_MAX}}, /* 18, _SC_SIGQUEUE_MAX */
{cons, {c:TIMER_MAX}}, /* 19, _SC_TIMER_MAX */
{nsup, {c:0}}, /* 20, _SC_TZNAME_MAX */
{cons, {c:_POSIX_ASYNCHRONOUS_IO}}, /* 21, _SC_ASYNCHRONOUS_IO */
{cons, {c:_POSIX_FSYNC}}, /* 22, _SC_FSYNC */
{cons, {c:_POSIX_MAPPED_FILES}}, /* 23, _SC_MAPPED_FILES */
{cons, {c:-1L}}, /* 24, _SC_MEMLOCK */
{cons, {c:_POSIX_MEMLOCK_RANGE}}, /* 25, _SC_MEMLOCK_RANGE */
{cons, {c:_POSIX_MEMORY_PROTECTION}}, /* 26, _SC_MEMORY_PROTECTION */
{cons, {c:_POSIX_MESSAGE_PASSING}}, /* 27, _SC_MESSAGE_PASSING */
{cons, {c:-1L}}, /* 28, _SC_PRIORITIZED_IO */
{cons, {c:_POSIX_REALTIME_SIGNALS}}, /* 29, _SC_REALTIME_SIGNALS */
{cons, {c:_POSIX_SEMAPHORES}}, /* 30, _SC_SEMAPHORES */
{cons, {c:_POSIX_SHARED_MEMORY_OBJECTS}}, /* 31, _SC_SHARED_MEMORY_OBJECTS */
{cons, {c:_POSIX_SYNCHRONIZED_IO}}, /* 32, _SC_SYNCHRONIZED_IO */
{cons, {c:_POSIX_TIMERS}}, /* 33, _SC_TIMERS */
{cons, {c:AIO_LISTIO_MAX}}, /* 34, _SC_AIO_LISTIO_MAX */
{cons, {c:AIO_MAX}}, /* 35, _SC_AIO_MAX */
{cons, {c:AIO_PRIO_DELTA_MAX}}, /* 36, _SC_AIO_PRIO_DELTA_MAX */
{nsup, {c:0}}, /* 37, _SC_DELAYTIMER_MAX */
{cons, {c:PTHREAD_KEYS_MAX}}, /* 38, _SC_THREAD_KEYS_MAX */
{cons, {c:PTHREAD_STACK_MIN}}, /* 39, _SC_THREAD_STACK_MIN */
{cons, {c:-1L}}, /* 40, _SC_THREAD_THREADS_MAX */
{cons, {c:TTY_NAME_MAX}}, /* 41, _SC_TTY_NAME_MAX */
{cons, {c:_POSIX_THREADS}}, /* 42, _SC_THREADS */
{cons, {c:_POSIX_THREAD_ATTR_STACKADDR}},/* 43, _SC_THREAD_ATTR_STACKADDR */
{cons, {c:_POSIX_THREAD_ATTR_STACKSIZE}},/* 44, _SC_THREAD_ATTR_STACKSIZE */
{cons, {c:_POSIX_THREAD_PRIORITY_SCHEDULING}}, /* 45, _SC_THREAD_PRIORITY_SCHEDULING */
{cons, {c:-1L}}, /* 46, _SC_THREAD_PRIO_INHERIT */
{cons, {c:-1L}}, /* 47, _SC_THREAD_PRIO_PROTECT */
{cons, {c:_POSIX_THREAD_PROCESS_SHARED}}, /* 48, _SC_THREAD_PROCESS_SHARED */
{cons, {c:_POSIX_THREAD_SAFE_FUNCTIONS}}, /* 49, _SC_THREAD_SAFE_FUNCTIONS */
{cons, {c:16384L}}, /* 50, _SC_GETGR_R_SIZE_MAX */
{cons, {c:16384L}}, /* 51, _SC_GETPW_R_SIZE_MAX */
{cons, {c:LOGIN_NAME_MAX}}, /* 52, _SC_LOGIN_NAME_MAX */
{cons, {c:PTHREAD_DESTRUCTOR_ITERATIONS}}, /* 53, _SC_THREAD_DESTRUCTOR_ITERATIONS */
{cons, {c:_POSIX_ADVISORY_INFO}}, /* 54, _SC_ADVISORY_INFO */
{cons, {c:ATEXIT_MAX}}, /* 55, _SC_ATEXIT_MAX */
{cons, {c:_POSIX_BARRIERS}}, /* 56, _SC_BARRIERS */
{cons, {c:BC_BASE_MAX}}, /* 57, _SC_BC_BASE_MAX */
{cons, {c:BC_DIM_MAX}}, /* 58, _SC_BC_DIM_MAX */
{cons, {c:BC_SCALE_MAX}}, /* 59, _SC_BC_SCALE_MAX */
{cons, {c:BC_STRING_MAX}}, /* 60, _SC_BC_STRING_MAX */
{cons, {c:_POSIX_CLOCK_SELECTION}}, /* 61, _SC_CLOCK_SELECTION */
{nsup, {c:0}}, /* 62, _SC_COLL_WEIGHTS_MAX */
{cons, {c:_POSIX_CPUTIME}}, /* 63, _SC_CPUTIME */
{cons, {c:EXPR_NEST_MAX}}, /* 64, _SC_EXPR_NEST_MAX */
{cons, {c:HOST_NAME_MAX}}, /* 65, _SC_HOST_NAME_MAX */
{cons, {c:IOV_MAX}}, /* 66, _SC_IOV_MAX */
{cons, {c:_POSIX_IPV6}}, /* 67, _SC_IPV6 */
{cons, {c:LINE_MAX}}, /* 68, _SC_LINE_MAX */
{cons, {c:_POSIX_MONOTONIC_CLOCK}}, /* 69, _SC_MONOTONIC_CLOCK */
{cons, {c:_POSIX_RAW_SOCKETS}}, /* 70, _SC_RAW_SOCKETS */
{cons, {c:_POSIX_READER_WRITER_LOCKS}}, /* 71, _SC_READER_WRITER_LOCKS */
{cons, {c:_POSIX_REGEXP}}, /* 72, _SC_REGEXP */
{cons, {c:RE_DUP_MAX}}, /* 73, _SC_RE_DUP_MAX */
{cons, {c:_POSIX_SHELL}}, /* 74, _SC_SHELL */
{cons, {c:_POSIX_SPAWN}}, /* 75, _SC_SPAWN */
{cons, {c:_POSIX_SPIN_LOCKS}}, /* 76, _SC_SPIN_LOCKS */
{cons, {c:-1L}}, /* 77, _SC_SPORADIC_SERVER */
{nsup, {c:0}}, /* 78, _SC_SS_REPL_MAX */
{cons, {c:SYMLOOP_MAX}}, /* 79, _SC_SYMLOOP_MAX */
{cons, {c:_POSIX_THREAD_CPUTIME}}, /* 80, _SC_THREAD_CPUTIME */
{cons, {c:-1L}}, /* 81, _SC_THREAD_SPORADIC_SERVER */
{cons, {c:_POSIX_TIMEOUTS}}, /* 82, _SC_TIMEOUTS */
{cons, {c:-1L}}, /* 83, _SC_TRACE */
{cons, {c:-1L}}, /* 84, _SC_TRACE_EVENT_FILTER */
{nsup, {c:0}}, /* 85, _SC_TRACE_EVENT_NAME_MAX */
{cons, {c:-1L}}, /* 86, _SC_TRACE_INHERIT */
{cons, {c:-1L}}, /* 87, _SC_TRACE_LOG */
{nsup, {c:0}}, /* 88, _SC_TRACE_NAME_MAX */
{nsup, {c:0}}, /* 89, _SC_TRACE_SYS_MAX */
{nsup, {c:0}}, /* 90, _SC_TRACE_USER_EVENT_MAX */
{cons, {c:-1L}}, /* 91, _SC_TYPED_MEMORY_OBJECTS */
{cons, {c:_POSIX_V6_ILP32_OFF32}}, /* 92, _SC_V6_ILP32_OFF32 */
{cons, {c:_POSIX_V6_ILP32_OFFBIG}}, /* 93, _SC_V6_ILP32_OFFBIG */
{cons, {c:_POSIX_V6_LP64_OFF64}}, /* 94, _SC_V6_LP64_OFF64 */
{cons, {c:_POSIX_V6_LPBIG_OFFBIG}}, /* 95, _SC_V6_LPBIG_OFFBIG */
{cons, {c:_XOPEN_CRYPT}}, /* 96, _SC_XOPEN_CRYPT */
{cons, {c:_XOPEN_ENH_I18N}}, /* 97, _SC_XOPEN_ENH_I18N */
{cons, {c:-1L}}, /* 98, _SC_XOPEN_LEGACY */
{cons, {c:-1L}}, /* 99, _SC_XOPEN_REALTIME */
{cons, {c:STREAM_MAX}}, /* 100, _SC_STREAM_MAX */
{cons, {c:_POSIX_PRIORITY_SCHEDULING}}, /* 101, _SC_PRIORITY_SCHEDULING */
{cons, {c:-1L}}, /* 102, _SC_XOPEN_REALTIME_THREADS */
{cons, {c:_XOPEN_SHM}}, /* 103, _SC_XOPEN_SHM */
{cons, {c:-1L}}, /* 104, _SC_XOPEN_STREAMS */
{cons, {c:-1L}}, /* 105, _SC_XOPEN_UNIX */
{cons, {c:_XOPEN_VERSION}}, /* 106, _SC_XOPEN_VERSION */
{cons, {c:_POSIX2_CHAR_TERM}}, /* 107, _SC_2_CHAR_TERM */
{cons, {c:_POSIX2_C_BIND}}, /* 108, _SC_2_C_BIND */
{cons, {c:_POSIX2_C_DEV}}, /* 109, _SC_2_C_DEV */
{cons, {c:-1L}}, /* 110, _SC_2_FORT_DEV */
{cons, {c:-1L}}, /* 111, _SC_2_FORT_RUN */
{cons, {c:-1L}}, /* 112, _SC_2_LOCALEDEF */
{cons, {c:-1L}}, /* 113, _SC_2_PBS */
{cons, {c:-1L}}, /* 114, _SC_2_PBS_ACCOUNTING */
{cons, {c:-1L}}, /* 115, _SC_2_PBS_CHECKPOINT */
{cons, {c:-1L}}, /* 116, _SC_2_PBS_LOCATE */
{cons, {c:-1L}}, /* 117, _SC_2_PBS_MESSAGE */
{cons, {c:-1L}}, /* 118, _SC_2_PBS_TRACK */
{cons, {c:_POSIX2_SW_DEV}}, /* 119, _SC_2_SW_DEV */
{cons, {c:_POSIX2_UPE}}, /* 120, _SC_2_UPE */
{cons, {c:_POSIX2_VERSION}}, /* 121, _SC_2_VERSION */
{cons, {c:-1L}}, /* 122, _SC_THREAD_ROBUST_PRIO_INHERIT */
{cons, {c:-1L}}, /* 123, _SC_THREAD_ROBUST_PRIO_PROTECT */
{cons, {c:-1L}}, /* 124, _SC_XOPEN_UUCP */
{func, {f:get_cpu_cache}}, /* 125, _SC_LEVEL1_ICACHE_SIZE */
{func, {f:get_cpu_cache}}, /* 126, _SC_LEVEL1_ICACHE_ASSOC */
{func, {f:get_cpu_cache}}, /* 127, _SC_LEVEL1_ICACHE_LINESIZE */
{func, {f:get_cpu_cache}}, /* 128, _SC_LEVEL1_DCACHE_SIZE */
{func, {f:get_cpu_cache}}, /* 129, _SC_LEVEL1_DCACHE_ASSOC */
{func, {f:get_cpu_cache}}, /* 130, _SC_LEVEL1_DCACHE_LINESIZE */
{func, {f:get_cpu_cache}}, /* 131, _SC_LEVEL2_CACHE_SIZE */
{func, {f:get_cpu_cache}}, /* 132, _SC_LEVEL2_CACHE_ASSOC */
{func, {f:get_cpu_cache}}, /* 133, _SC_LEVEL2_CACHE_LINESIZE */
{func, {f:get_cpu_cache}}, /* 134, _SC_LEVEL3_CACHE_SIZE */
{func, {f:get_cpu_cache}}, /* 135, _SC_LEVEL3_CACHE_ASSOC */
{func, {f:get_cpu_cache}}, /* 136, _SC_LEVEL3_CACHE_LINESIZE */
{func, {f:get_cpu_cache}}, /* 137, _SC_LEVEL4_CACHE_SIZE */
{func, {f:get_cpu_cache}}, /* 138, _SC_LEVEL4_CACHE_ASSOC */
{func, {f:get_cpu_cache}}, /* 139, _SC_LEVEL4_CACHE_LINESIZE */
};
#define SC_MIN _SC_ARG_MAX
#define SC_MAX _SC_LEVEL4_CACHE_LINESIZE
/* sysconf: POSIX 4.8.1.1 */
/* Allows a portable app to determine quantities of resources or
presence of an option at execution time. */
long int
sysconf (int in)
{
if (in >= SC_MIN && in <= SC_MAX)
{
switch (sca[in].type)
{
case nsup:
break;
case cons:
return sca[in].c;
case func:
return sca[in].f (in);
}
}
/* Unimplemented sysconf name or invalid option value. */
set_errno (EINVAL);
return -1L;
}
#define ls(s) sizeof(s),s
static struct
{
size_t l;
const char *s;
} csa[] =
{
{ls ("/bin:/usr/bin")}, /* _CS_PATH */
{0, NULL}, /* _CS_POSIX_V6_ILP32_OFF32_CFLAGS */
{0, NULL}, /* _CS_POSIX_V6_ILP32_OFF32_LDFLAGS */
{0, NULL}, /* _CS_POSIX_V6_ILP32_OFF32_LIBS */
{0, NULL}, /* _CS_XBS5_ILP32_OFF32_LINTFLAGS */
#ifdef __x86_64__
{0, NULL}, /* _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS */
{0, NULL}, /* _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS */
{0, NULL}, /* _CS_POSIX_V6_ILP32_OFFBIG_LIBS */
{0, NULL}, /* _CS_XBS5_ILP32_OFFBIG_LINTFLAGS */
{ls ("")}, /* _CS_POSIX_V6_LP64_OFF64_CFLAGS */
{ls ("")}, /* _CS_POSIX_V6_LP64_OFF64_LDFLAGS */
{ls ("")}, /* _CS_POSIX_V6_LP64_OFF64_LIBS */
{ls ("")}, /* _CS_XBS5_LP64_OFF64_LINTFLAGS */
{ls ("")}, /* _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS */
{ls ("")}, /* _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS */
{ls ("")}, /* _CS_POSIX_V6_LPBIG_OFFBIG_LIBS */
{ls ("")}, /* _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS */
{ls ("POSIX_V6_LP64_OFF64")}, /* _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS */
#else
{ls ("")}, /* _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS */
{ls ("")}, /* _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS */
{ls ("")}, /* _CS_POSIX_V6_ILP32_OFFBIG_LIBS */
{ls ("")}, /* _CS_XBS5_ILP32_OFFBIG_LINTFLAGS */
{0, NULL}, /* _CS_POSIX_V6_LP64_OFF64_CFLAGS */
{0, NULL}, /* _CS_POSIX_V6_LP64_OFF64_LDFLAGS */
{0, NULL}, /* _CS_POSIX_V6_LP64_OFF64_LIBS */
{0, NULL}, /* _CS_XBS5_LP64_OFF64_LINTFLAGS */
{0, NULL}, /* _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS */
{0, NULL}, /* _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS */
{0, NULL}, /* _CS_POSIX_V6_LPBIG_OFFBIG_LIBS */
{0, NULL}, /* _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS */
{ls ("POSIX_V6_ILP32_OFFBIG")}, /* _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS */
#endif
{ls ("")}, /* _CS_POSIX_V7_THREADS_CFLAGS */
{ls ("")}, /* _CS_POSIX_V7_THREADS_LDFLAGS */
{ls ("POSIXLY_CORRECT=1")}, /* _CS_V7_ENV */
{ls ("")}, /* _CS_LFS_CFLAGS */
{ls ("")}, /* _CS_LFS_LDFLAGS */
{ls ("")}, /* _CS_LFS_LIBS */
{ls ("")}, /* _CS_LFS_LINTFLAGS */
};
#define CS_MIN _CS_PATH
#define CS_MAX _CS_LFS_LINTFLAGS
extern "C" size_t
confstr (int in, char *buf, size_t len)
{
if (in >= CS_MIN && in <= CS_MAX)
{
if (csa[in].l && len)
{
buf[0] = 0;
strncat (buf, csa[in].s, MIN (len, csa[in].l) - 1);
}
return csa[in].l;
}
/* Invalid option value. */
set_errno (EINVAL);
return 0;
}
extern "C" int
get_nprocs_conf (void)
{
return get_nproc_values (_SC_NPROCESSORS_CONF);
}
extern "C" int
get_nprocs (void)
{
return get_nproc_values (_SC_NPROCESSORS_ONLN);
}
extern "C" long
get_phys_pages (void)
{
return get_phys_pages (_SC_PHYS_PAGES);
}
extern "C" long
get_avphys_pages (void)
{
return get_avphys (_SC_AVPHYS_PAGES);
}
extern "C" int
sysinfo (struct sysinfo *info)
{
unsigned long long uptime = 0ULL, totalram = 0ULL, freeram = 0ULL,
totalswap = 0ULL, freeswap = 0ULL;
MEMORYSTATUSEX memory_status;
PSYSTEM_PAGEFILE_INFORMATION spi = NULL;
ULONG sizeof_spi = 512;
PSYSTEM_TIMEOFDAY_INFORMATION stodi = NULL;
const ULONG sizeof_stodi = sizeof (SYSTEM_TIMEOFDAY_INFORMATION);
NTSTATUS status = STATUS_SUCCESS;
winpids pids ((DWORD) 0);
if (!info)
{
set_errno (EFAULT);
return -1;
}
stodi = (PSYSTEM_TIMEOFDAY_INFORMATION) malloc (sizeof_stodi);
status = NtQuerySystemInformation (SystemTimeOfDayInformation, (PVOID) stodi,
sizeof_stodi, NULL);
if (NT_SUCCESS (status))
uptime = (stodi->CurrentTime.QuadPart - stodi->BootTime.QuadPart)
/ NS100PERSEC;
else
debug_printf ("NtQuerySystemInformation(SystemTimeOfDayInformation), "
"status %y", status);
if (stodi)
free (stodi);
memory_status.dwLength = sizeof (MEMORYSTATUSEX);
GlobalMemoryStatusEx (&memory_status);
totalram = memory_status.ullTotalPhys / wincap.page_size ();
freeram = memory_status.ullAvailPhys / wincap.page_size ();
spi = (PSYSTEM_PAGEFILE_INFORMATION) malloc (sizeof_spi);
if (spi)
{
status = NtQuerySystemInformation (SystemPagefileInformation, (PVOID) spi,
sizeof_spi, &sizeof_spi);
if (status == STATUS_INFO_LENGTH_MISMATCH)
{
free (spi);
spi = (PSYSTEM_PAGEFILE_INFORMATION) malloc (sizeof_spi);
if (spi)
status = NtQuerySystemInformation (SystemPagefileInformation,
(PVOID) spi, sizeof_spi,
&sizeof_spi);
}
}
if (!spi || !NT_SUCCESS (status))
{
debug_printf ("NtQuerySystemInformation(SystemPagefileInformation), "
"status %y", status);
totalswap = (memory_status.ullTotalPageFile - memory_status.ullTotalPhys)
/ wincap.page_size ();
freeswap = (memory_status.ullAvailPageFile - memory_status.ullTotalPhys)
/ wincap.page_size ();
}
else
{
PSYSTEM_PAGEFILE_INFORMATION spp = spi;
do
{
totalswap += spp->CurrentSize;
freeswap += spp->CurrentSize - spp->TotalUsed;
}
while (spp->NextEntryOffset
&& (spp = (PSYSTEM_PAGEFILE_INFORMATION)
((char *) spp + spp->NextEntryOffset)));
}
if (spi)
free (spi);
info->uptime = (long) uptime;
info->totalram = (unsigned long) totalram;
info->freeram = (unsigned long) freeram;
info->totalswap = (unsigned long) totalswap;
info->freeswap = (unsigned long) freeswap;
info->procs = (unsigned short) pids.npids;
info->mem_unit = (unsigned int) wincap.page_size ();
/* FIXME: unsupported */
info->loads[0] = 0UL;
info->loads[1] = 0UL;
info->loads[2] = 0UL;
info->sharedram = 0UL;
info->bufferram = 0UL;
info->totalhigh = 0UL;
info->freehigh = 0UL;
return 0;
}
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