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be318c0f38
The PAGE_SIZE from the Mach headers statically defines the machine's page size. There's no need to query it dynamically; furthermore, the implementation of the vm_statistics () RPC unconditionally fills in pagesize = PAGE_SIZE; Not doing the extra RPC shaves off 2 RPCs from the start-up of every process! Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230218203717.373211-7-bugaevc@gmail.com>
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/* Copyright (C) 1992-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <mach.h>
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#include <mach/mig_support.h>
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#include <mach/vm_param.h>
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#include <unistd.h>
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mach_port_t __mach_task_self_;
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mach_port_t __mach_host_self_;
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vm_size_t __vm_page_size = 0; /* Must be data not bss for weak alias. */
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weak_alias (__vm_page_size, vm_page_size)
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#ifdef NDR_DEF_HEADER
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/* This defines NDR_record, which the MiG-generated stubs use. XXX namespace */
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# include NDR_DEF_HEADER
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#endif
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void
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__mach_init (void)
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{
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kern_return_t err;
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__mach_task_self_ = (__mach_task_self) ();
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__mach_host_self_ = (__mach_host_self) ();
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__mig_init (0);
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#ifdef PAGE_SIZE
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__vm_page_size = PAGE_SIZE;
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(void) err;
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#elif defined (HAVE_HOST_PAGE_SIZE)
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if (err = __host_page_size (__mach_host_self (), &__vm_page_size))
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_exit (err);
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#else
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{
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vm_statistics_data_t stats;
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if (err = __vm_statistics (__mach_task_self (), &stats))
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_exit (err);
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__vm_page_size = stats.pagesize;
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}
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#endif
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}
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weak_alias (__mach_init, mach_init)
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