diff options
Diffstat (limited to 'src/kernel/proc.c')
| -rw-r--r-- | src/kernel/proc.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/kernel/proc.c b/src/kernel/proc.c index b165878..36c88b5 100644 --- a/src/kernel/proc.c +++ b/src/kernel/proc.c @@ -4,11 +4,16 @@ #include <kernel/util.h> #include <stdint.h> +struct process *process_first; struct process *process_current; struct process *process_new() { struct process *proc = page_alloc(1); // TODO kmalloc proc->pages = pagedir_new(); + proc->state = PS_RUNNING; + proc->next = NULL; + + process_first = proc; // map the stack to the last page in memory pagedir_map(proc->pages, (void*)~PAGE_MASK, page_alloc(1), true, true); @@ -24,10 +29,11 @@ struct process *process_new() { return proc; } -struct process *process_clone(const struct process *orig) { +struct process *process_clone(struct process *orig) { struct process *clone = page_alloc(1); memcpy(clone, orig, sizeof(struct process)); clone->pages = pagedir_copy(orig->pages); + orig->next = clone; return clone; } @@ -37,3 +43,10 @@ void process_switch(struct process *proc) { pagedir_switch(proc->pages); sysexit(proc->regs); } + +struct process *process_find(enum process_state target) { + struct process *iter = process_first; + while (iter && (iter->state != target)) + iter = iter->next; + return iter; +} |