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identify CPU numbers on OS X systems #48

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33 changes: 33 additions & 0 deletions vanitygen.c
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,15 @@
#include "pattern.h"
#include "util.h"


#if defined(__APPLE__)

#include <sys/types.h>
#include <sys/sysctl.h>

#endif


const char *version = VANITYGEN_VERSION;


Expand Down Expand Up @@ -241,6 +250,28 @@ vg_thread_loop(void *arg)


#if !defined(_WIN32)
// define count_processors only on non Windows systems

#if defined(__APPLE__)
// possibly *BSD goes here as well

int
count_processors(void)
{
int error = 0;
int value = 0;
size_t length = sizeof(value);

error = sysctlbyname("hw.ncpu", &value, &length, NULL, 0);
if (error == 0)
return value;

return 0;
}

#else

// default case is Linux
int
count_processors(void)
{
Expand All @@ -261,6 +292,8 @@ count_processors(void)
}
#endif

#endif

int
start_threads(vg_context_t *vcp, int nthreads)
{
Expand Down