| /* 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 |
| |
| struct wincaps |
| { |
| DWORD def_guard_pages; |
| /* 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 is_server : 1; |
| unsigned needs_count_in_si_lpres2 : 1; |
| unsigned has_gaa_largeaddress_bug : 1; |
| unsigned has_broken_alloc_console : 1; |
| unsigned has_console_logon_sid : 1; |
| unsigned has_precise_system_time : 1; |
| unsigned has_microsoft_accounts : 1; |
| unsigned has_processor_groups : 1; |
| unsigned has_broken_prefetchvm : 1; |
| unsigned has_new_pebteb_region : 1; |
| unsigned has_broken_whoami : 1; |
| unsigned has_unprivileged_createsymlink : 1; |
| }; |
| }; |
| |
| class wincapc |
| { |
| SYSTEM_INFO system_info; |
| RTL_OSVERSIONINFOEXW version; |
| char osnam[40]; |
| ULONG_PTR wow64; |
| void *caps; |
| |
| public: |
| void init (); |
| |
| const DWORD cpu_count () const { return system_info.dwNumberOfProcessors; } |
| /* 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 bool is_wow64 () const { return !!wow64; } |
| |
| #define IMPLEMENT(cap) cap() const { return ((wincaps *) this->caps)->cap; } |
| |
| DWORD def_guard_page_size () const |
| { |
| return ((wincaps *) this->caps)->def_guard_pages * page_size (); |
| } |
| bool IMPLEMENT (is_server) |
| bool IMPLEMENT (needs_count_in_si_lpres2) |
| bool IMPLEMENT (has_gaa_largeaddress_bug) |
| bool IMPLEMENT (has_broken_alloc_console) |
| bool IMPLEMENT (has_console_logon_sid) |
| bool IMPLEMENT (has_precise_system_time) |
| bool IMPLEMENT (has_microsoft_accounts) |
| bool IMPLEMENT (has_processor_groups) |
| bool IMPLEMENT (has_broken_prefetchvm) |
| bool IMPLEMENT (has_new_pebteb_region) |
| bool IMPLEMENT (has_broken_whoami) |
| bool IMPLEMENT (has_unprivileged_createsymlink) |
| |
| #undef IMPLEMENT |
| }; |
| |
| extern wincapc wincap; |
| |
| #endif /* _WINCAP_H */ |
