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Cleaned up process table structure: removed p_type, p_pendcount.

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Removed stop sequence when MINIX is shut down.
Disabled send mask checks --- to be replaced by proper mechanism.
Fixed bug relating to 'shutdown -x'.
Simplified clock accounting of realtime.
Updated Makefiles for mkdept script.
This commit is contained in:
Jorrit Herder
2005-06-24 16:24:40 +00:00
parent 5654996c07
commit a408699ce0
19 changed files with 153 additions and 630 deletions
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kernel/system/proctl.c
+21 -33
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@@ -47,15 +47,13 @@ register message *m_ptr; /* pointer to request message */
#endif
rpc->p_nr = m_ptr->PR_PROC_NR; /* this was obliterated by copy */
rpc->p_ntf_q = NULL; /* remove pending notifications */
/* Only one in group should have SIGNALED, child doesn't inherit tracing. */
rpc->p_flags |= NO_MAP; /* inhibit process from running */
rpc->p_flags &= ~(PENDING | SIG_PENDING | P_STOP);
/* Only 1 in group should have PENDING, child does not inherit trace status*/
rpc->p_flags &= ~(SIGNALED | SIG_PENDING | P_STOP);
sigemptyset(&rpc->p_pending);
rpc->p_pendcount = 0;
rpc->p_reg.retreg = 0; /* child sees pid = 0 to know it is child */
rpc->p_reg.retreg = 0; /* child sees pid = 0 to know it is child */
rpc->p_user_time = 0; /* set all the accounting times to 0 */
rpc->p_sys_time = 0;
@@ -175,7 +173,6 @@ register message *m_ptr; /* pointer to request message */
*
* The parameters for this system call are:
* m1_i1: PR_PROC_NR (slot number of exiting process)
* m1_i2: PR_PPROC_NR (slot number of parent process)
*/
@@ -186,36 +183,27 @@ register message *m_ptr; /* pointer to request message */
PUBLIC int do_xit(m_ptr)
message *m_ptr; /* pointer to request message */
{
/* Handle sys_exit. A user process has exited (the PM sent the request).
/* Handle sys_exit. A user process has exited or a system process requests
* to exit. Only the PM can request other process slots to be cleared.
* The routine to clean up a process table slot cancels outstanding timers,
* possibly removes the process from the message queues, and resets certain
* process table fields to the default values.
*/
register struct proc *rc;
int exit_proc_nr;
/* Get a pointer to the process that exited. */
exit_proc_nr = m_ptr->PR_PROC_NR;
if (exit_proc_nr == SELF) exit_proc_nr = m_ptr->m_source;
if (! isokprocn(exit_proc_nr)) return(EINVAL);
rc = proc_addr(exit_proc_nr);
/* Determine what process exited. */
if (PM_PROC_NR == m_ptr->m_source) {
exit_proc_nr = m_ptr->PR_PROC_NR; /* get exiting process */
if (exit_proc_nr != SELF) { /* PM tries to exit self */
if (! isokprocn(exit_proc_nr)) return(EINVAL);
clear_proc(exit_proc_nr); /* exit a user process */
return(OK); /* report back to PM */
}
}
#if DEAD_CODE
/* If this is a user process and the PM passed in a valid parent process,
* accumulate the child times at the parent.
*/
if (isuserp(rc) && isokprocn(m_ptr->PR_PPROC_NR)) {
rp = proc_addr(m_ptr->PR_PPROC_NR);
lock(15, "do_xit");
rp->child_utime += rc->user_time + rc->child_utime;
rp->child_stime += rc->sys_time + rc->child_stime;
unlock(15);
}
#endif
/* Now call the routine to clean up of the process table slot. This cancels
* outstanding timers, possibly removes the process from the message queues,
* and resets important process table fields.
*/
clear_proc(exit_proc_nr);
return(OK); /* tell PM that cleanup succeeded */
/* The PM or some other system process requested to be exited. */
clear_proc(m_ptr->m_source);
return(EDONTREPLY);
}