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std.parallelism: Use core.sys.platform.sys.sysctl module

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This commit is contained in:
Iain Buclaw 2021-02-01 15:38:48 +01:00
parent d8cde81d0a
commit 87e5ab73b8
1 changed files with 32 additions and 46 deletions
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78
std/parallelism.d
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@ -95,23 +95,6 @@ import std.meta;
import std.range.primitives; import std.range.primitives;
import std.traits; import std.traits;
version (Darwin)
{
version = useSysctlbyname;
}
else version (FreeBSD)
{
version = useSysctlbyname;
}
else version (DragonFlyBSD)
{
version = useSysctlbyname;
}
else version (NetBSD)
{
version = useSysctlbyname;
}
/* /*
(For now public undocumented with reserved name.) (For now public undocumented with reserved name.)
@ -952,11 +935,6 @@ if (is(typeof(fun(args))) && isSafeTask!F)
return ret; return ret;
} }
version (useSysctlbyname)
private extern(C) int sysctlbyname(
const char *, void *, size_t *, void *, size_t
) @nogc nothrow;
/** /**
The total number of CPU cores available on the current machine, as reported by The total number of CPU cores available on the current machine, as reported by
the operating system. the operating system.
@ -989,6 +967,38 @@ uint totalCPUsImpl() @nogc nothrow @trusted
} }
return cast(uint) sysconf(_SC_NPROCESSORS_ONLN); return cast(uint) sysconf(_SC_NPROCESSORS_ONLN);
} }
else version (Darwin)
{
import core.sys.darwin.sys.sysctl : sysctlbyname;
uint result;
size_t len = result.sizeof;
sysctlbyname("hw.physicalcpu", &result, &len, null, 0);
return result;
}
else version (DragonFlyBSD)
{
import core.sys.dragonflybsd.sys.sysctl : sysctlbyname;
uint result;
size_t len = result.sizeof;
sysctlbyname("hw.ncpu", &result, &len, null, 0);
return result;
}
else version (FreeBSD)
{
import core.sys.freebsd.sys.sysctl : sysctlbyname;
uint result;
size_t len = result.sizeof;
sysctlbyname("hw.ncpu", &result, &len, null, 0);
return result;
}
else version (NetBSD)
{
import core.sys.netbsd.sys.sysctl : sysctlbyname;
uint result;
size_t len = result.sizeof;
sysctlbyname("hw.ncpu", &result, &len, null, 0);
return result;
}
else version (Solaris) else version (Solaris)
{ {
import core.sys.posix.unistd : _SC_NPROCESSORS_ONLN, sysconf; import core.sys.posix.unistd : _SC_NPROCESSORS_ONLN, sysconf;
@ -999,30 +1009,6 @@ uint totalCPUsImpl() @nogc nothrow @trusted
import core.sys.posix.unistd : _SC_NPROCESSORS_ONLN, sysconf; import core.sys.posix.unistd : _SC_NPROCESSORS_ONLN, sysconf;
return cast(uint) sysconf(_SC_NPROCESSORS_ONLN); return cast(uint) sysconf(_SC_NPROCESSORS_ONLN);
} }
else version (useSysctlbyname)
{
version (Darwin)
{
enum nameStr = "hw.physicalcpu";
}
else version (FreeBSD)
{
auto nameStr = "hw.ncpu\0".ptr;
}
else version (DragonFlyBSD)
{
auto nameStr = "hw.ncpu\0".ptr;
}
else version (NetBSD)
{
auto nameStr = "hw.ncpu\0".ptr;
}
uint result;
size_t len = result.sizeof;
sysctlbyname(nameStr, &result, &len, null, 0);
return result;
}
else else
{ {
static assert(0, "Don't know how to get N CPUs on this OS."); static assert(0, "Don't know how to get N CPUs on this OS.");