You can use strace on a specific pid to figure out what a specific process is doing, e.g.:
strace -fp <pid>
You might see something like:
select(9, [3 5 8], [], [], {0, 999999}) = 0 (Timeout)
#ifndef __FINK_ENDIANDEV_PKG_ENDIAN_H__ | |
#define __FINK_ENDIANDEV_PKG_ENDIAN_H__ 1 | |
/** compatibility header for endian.h | |
* This is a simple compatibility shim to convert | |
* BSD/Linux endian macros to the Mac OS X equivalents. | |
* It is public domain. | |
* */ | |
#ifndef __APPLE__ |