diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/test1.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/test1.c b/src/test1.c index b1f0baafc..39efd09ca 100644 --- a/src/test1.c +++ b/src/test1.c @@ -16,6 +16,13 @@ #include "sqliteInt.h" #if SQLITE_OS_WIN # include "os_win.h" +# include <windows.h> +#else +# include <unistd.h> +# if defined(__APPLE__) +# include <sys/param.h> +# include <sys/sysctl.h> +# endif #endif #include "vdbeInt.h" @@ -8639,6 +8646,40 @@ static int SQLITE_TCLAPI test_autovacuum_pages( return TCL_OK; } +/* +** Usage: number_of_cores +** +** Return a guess at the number of available cores available on the +** processor on which this process is running. +*/ +static int SQLITE_TCLAPI guess_number_of_cores( + void * clientData, + Tcl_Interp *interp, + int objc, + Tcl_Obj *CONST objv[] +){ + unsigned int nCore = 1; +#if SQLITE_OS_WIN + SYSTEM_INFO sysinfo; + GetSystemInfo(&sysinfo); + nCore = (unsigned int)sysinfo.dwNumberOfProcessors; +#elif defined(__APPLE__) + int nm[2]; + size_t len = 4; + nm[0] = CTL_HW; nm[1] = HW_AVAILCPU; + sysctl(nm, 2, &nCore, &len, NULL, 0); + if( nCore<1 ){ + nm[1] = HW_NCPU; + sysctl(nm, 2, &nCore, &len, NULL, 0); + } +#else + nCore = sysconf(_SC_NPROCESSORS_ONLN); +#endif + if( nCore<=0 ) nCore = 1; + Tcl_SetObjResult(interp, Tcl_NewIntObj((int)nCore)); + return SQLITE_OK; +} + /* ** Register commands with the TCL interpreter. @@ -8939,6 +8980,7 @@ int Sqlitetest1_Init(Tcl_Interp *interp){ { "test_write_db", test_write_db, 0 }, { "sqlite3_register_cksumvfs", test_register_cksumvfs, 0 }, { "sqlite3_unregister_cksumvfs", test_unregister_cksumvfs, 0 }, + { "number_of_cores", guess_number_of_cores, 0 }, }; static int bitmask_size = sizeof(Bitmask)*8; static int longdouble_size = sizeof(LONGDOUBLE_TYPE); |