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simple signal handler and kill(2) support.

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This commit is contained in:
Tomoki Shirasawa
2013-07-18 08:53:28 +09:00
parent 2aa5194958
commit 3749696d3e
6 changed files with 152 additions and 3 deletions
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13
kernel/process.c
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@@ -54,6 +54,14 @@ struct process *create_process(unsigned long user_pc)
memset(proc, 0, sizeof(struct process));
ihk_atomic_set(&proc->refcount, 2); /* one for exit, another for wait */
proc->sighandler = kmalloc(sizeof(struct sig_handler), IHK_MC_AP_NOWAIT);
if(!proc->sighandler){
ihk_mc_free_pages(proc, KERNEL_STACK_NR_PAGES);
return NULL;
}
memset(proc->sighandler, '\0', sizeof(struct sig_handler));
proc->sighandler->use = 1;
ihk_mc_init_user_process(&proc->ctx, &proc->uctx,
((char *)proc) +
KERNEL_STACK_NR_PAGES * PAGE_SIZE, user_pc, 0);
@@ -61,6 +69,7 @@ struct process *create_process(unsigned long user_pc)
proc->vm = (struct process_vm *)(proc + 1);
if(init_process_vm(proc, proc->vm) != 0){
kfree(proc->sighandler);
ihk_mc_free_pages(proc, KERNEL_STACK_NR_PAGES);
return NULL;
}
@@ -95,6 +104,10 @@ struct process *clone_process(struct process *org, unsigned long pc,
ihk_atomic_inc(&org->vm->refcount);
proc->vm = org->vm;
// TODO: lock
proc->sighandler = org->sighandler;
org->sighandler->use++;
ihk_mc_spinlock_init(&proc->spin_sleep_lock);
proc->spin_sleep = 0;