getpid2
Get parent or calling process identification
Usage
#include <unistd.h>
pid_t
getpid(void);
pid_t
getppid(void);
Overview
getpid() returns the process ID of the calling process. The ID is guaranteed to be unique and is useful for constructing temporary file names.
getppid() returns the process ID of the parent of the calling process.
Errors
The getpid() and getppid() functions are always successful, and no return value is reserved to indicate an error.
Legacy synopsis
#include <sys/types.h> #include <unistd.h>
The include file ⟨sys/types.h⟩ is necessary.
Releases
155 releases since Mac OS X 10.0; the text changed 2 times.