newlib-cygwin/winsup/cygwin/local_includes/wincap.h

104 lines
3.4 KiB
C++

/* wincap.h: Header for OS capability class.
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. */
#ifndef _WINCAP_H
#define _WINCAP_H
#include "memory_layout.h"
struct wincaps
{
/* The bitfields must be 8 byte aligned on x86_64, otherwise the bitfield
ops generated by gcc are off by 4 bytes. */
struct __attribute__ ((aligned (8))) {
unsigned has_new_pebteb_region : 1;
unsigned has_unprivileged_createsymlink : 1;
unsigned has_precise_interrupt_time : 1;
unsigned has_posix_unlink_semantics : 1;
unsigned has_posix_unlink_semantics_with_ignore_readonly : 1;
unsigned has_case_sensitive_dirs : 1;
unsigned has_posix_rename_semantics : 1;
unsigned has_con_24bit_colors : 1;
unsigned has_con_broken_csi3j : 1;
unsigned has_con_broken_il_dl : 1;
unsigned has_con_esc_rep : 1;
unsigned has_extended_mem_api : 1;
unsigned has_tcp_fastopen : 1;
unsigned has_linux_tcp_keepalive_sockopts : 1;
unsigned has_tcp_maxrtms : 1;
unsigned has_con_broken_tabs : 1;
unsigned has_user_shstk : 1;
};
};
class wincapc
{
SYSTEM_INFO system_info;
RTL_OSVERSIONINFOEXW version;
char osnam[40];
const void *caps;
USHORT host_mach;
USHORT cygwin_mach;
bool _is_server;
public:
void init ();
const DWORD cpu_count () const { return system_info.dwNumberOfProcessors; }
const DWORD_PTR cpu_mask () const { return system_info.dwActiveProcessorMask;}
const WORD cpu_arch () const { return system_info.wProcessorArchitecture; }
const WORD cpu_level () const { return system_info.wProcessorLevel; }
/* The casts to size_t make sure that the returned value has the size of
a pointer on any system. This is important when using them for bit
mask operations, like in roundup2. */
const size_t page_size () const { return (size_t) system_info.dwPageSize; }
const size_t allocation_granularity () const
{ return (size_t) system_info.dwAllocationGranularity; }
const char *osname () const { return osnam; }
const DWORD build_number () const { return version.dwBuildNumber; }
const USHORT host_machine () const { return host_mach; }
const USHORT cygwin_machine () const { return cygwin_mach; }
#define IMPLEMENT(cap) cap() const { return ((wincaps *) this->caps)->cap; }
DWORD def_guard_page_size () const
{
return DEFAULT_GUARD_PAGE_COUNT * page_size ();
}
bool is_server () const { return _is_server; }
bool IMPLEMENT (has_new_pebteb_region)
bool IMPLEMENT (has_unprivileged_createsymlink)
bool IMPLEMENT (has_precise_interrupt_time)
bool IMPLEMENT (has_posix_unlink_semantics)
bool IMPLEMENT (has_posix_unlink_semantics_with_ignore_readonly)
bool IMPLEMENT (has_case_sensitive_dirs)
bool IMPLEMENT (has_posix_rename_semantics)
bool IMPLEMENT (has_con_24bit_colors)
bool IMPLEMENT (has_con_broken_csi3j)
bool IMPLEMENT (has_con_broken_il_dl)
bool IMPLEMENT (has_con_esc_rep)
bool IMPLEMENT (has_extended_mem_api)
bool IMPLEMENT (has_tcp_fastopen)
bool IMPLEMENT (has_linux_tcp_keepalive_sockopts)
bool IMPLEMENT (has_tcp_maxrtms)
bool IMPLEMENT (has_con_broken_tabs)
bool IMPLEMENT (has_user_shstk)
void disable_case_sensitive_dirs ()
{
((wincaps *)caps)->has_case_sensitive_dirs = false;
}
#undef IMPLEMENT
};
extern wincapc wincap;
#endif /* _WINCAP_H */