| |
> > the implementation of getpid() in the kernel should not
> > be difficult, just return the id of currently executing
> > process...?
>
> Well, get hacking! ;)
The following patch will add both getpid() and getppid() to legOS:
diff -u -r1.2 unistd.h
--- include/unistd.h 2000/08/01 01:12:40 1.2
+++ include/unistd.h 2000/12/14 21:49:56
@@ -94,4 +94,7 @@
//! kill all processes with priority lower or equal than p, excluding self.
extern void killall(priority_t p);
+extern pid_t getpid(void);
+extern pid_t getppid(void);
+
#endif // __unistd_h__
diff -u -r1.3 tm.c
--- kernel/tm.c 2000/08/01 00:14:18 1.3
+++ kernel/tm.c 2000/12/14 21:49:57
@@ -542,6 +542,15 @@
return 0;
}
+pid_t getpid(void)
+{
+ return (pid_t)cpid;
+}
+
+pid_t getppid(void)
+{
+ return (pid_t)cpid->parent;
+}
//! kill a process
/*! \param pid must be valid process ID, or undefined behaviour will result!
Eddie C. Dost
ecd@skynet.be
|
|
Message has 1 Reply:
 | | Re: getpid?
|
| Eddie, Would there be any problem making these inline, seeing how they're one-liners? (I'm assuming here that the H8 target implements inline) Regards, ROSCO (...) (24 years ago, 15-Dec-00, to lugnet.robotics.rcx.legos)
|
Message is in Reply To:
| | Re: getpid?
|
| (...) [code snipped] Ah, I understand. You could still use my method, but you'd have to pass the pid in as a parameter to the functions that need to know it, which would be ugly. (...) Well, get hacking! ;) (24 years ago, 14-Dec-00, to lugnet.robotics.rcx.legos)
|
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