os_version.cpp

//@AUTOHEADER@BEGIN@
/***********************************************************************\
|                    Drift Standard Libraries v1.01                     |
|            Copyright 2010-2023 Drift Solutions / Indy Sams            |
| Docs and more information available at https://www.driftsolutions.dev |
|          This file released under the 3-clause BSD license,           |
|            see included DSL.LICENSE.TXT file for details.             |
\***********************************************************************/
//@AUTOHEADER@END@
 
#include <drift/dslcore.h>
#include <drift/os_version.h>
 
#ifdef WIN32
const char * DSL_CC GetOSVersion() {
    if (Is64Bit()) {
        return "Windows (64-bit)";
    } else {
        return "Windows (32-bit)";
    }
}
 
typedef BOOL (WINAPI *LPFN_ISWOW64PROCESS) (HANDLE, PBOOL);
LPFN_ISWOW64PROCESS fnIsWow64Process=NULL;
 
bool DSL_CC Is64Bit() {
#ifdef WIN64
    return true;//we're good until Windows x128 is released
#else
    if (fnIsWow64Process == NULL) {
        fnIsWow64Process = (LPFN_ISWOW64PROCESS)GetProcAddress(GetModuleHandleA("kernel32"),"IsWow64Process");
    }
    if (fnIsWow64Process == NULL) { return false; }
 
    BOOL bIsWow64 = FALSE;
    if (fnIsWow64Process(GetCurrentProcess(), &bIsWow64)) {
        return bIsWow64;
    }
    return false;
#endif
}
 
#else
 
static char Get_OS_Version_Buf[1024];
const char * DSL_CC GetOSVersion() {
    struct utsname name;
    memset(&name, 0, sizeof(name));
    if (uname(&name) >= 0) {
        sprintf(Get_OS_Version_Buf, "%s %s %s on %s", name.sysname, name.version, name.release, name.machine);
        return Get_OS_Version_Buf;
    } else {
        #ifdef POSIX_C_SOURCE
            return "POSIX-compliant OS";
        #else
            return "Non-Windows OS";
        #endif
    }
}
 
bool DSL_CC Is64Bit() {
#if defined(__x86_64__)
    return true;
#else
    return false;
#endif
}
 
#ifdef DSL_HAVE_CPUID
DSL_API void DSL_CC linux_cpuid(int cpuInfo[4], int function_id) {
    __cpuid(function_id, cpuInfo[0], cpuInfo[1], cpuInfo[2], cpuInfo[3]);
}
#endif
 
#endif
 
#ifdef DSL_HAVE_CPUID
const InstructionSet::InstructionSet_Internal InstructionSet::CPU_Rep;
#endif