diff options
Diffstat (limited to 'src/kernel/task/task.c')
| -rw-r--r-- | src/kernel/task/task.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/kernel/task/task.c b/src/kernel/task/task.c index dec7565..9221813 100644 --- a/src/kernel/task/task.c +++ b/src/kernel/task/task.c @@ -77,6 +77,7 @@ void tasking_switch() { } current_thread = thread_next(); + pagedir_switch(current_thread->process->pagedir); gdt_setKernelStack(((uint32_t)current_thread->kernelStack_addr) + current_thread->kernelStack_size); @@ -278,6 +279,7 @@ struct process *process_new(struct process* parent, uint32_t uid, uint32_t privi p->pagedir = pagedir_new(); p->next = processes; p->stacksBottom = 0xDF000000; + p->heapseg = 0; p->next_objdesc = 0; p->objects = 0; @@ -289,6 +291,7 @@ struct process *process_new(struct process* parent, uint32_t uid, uint32_t privi static void thread_delete(struct thread *th) { kfree(th->kernelStack_addr); + if (th->userStack_seg != 0) seg_unmap(th->userStack_seg); th->process->threads--; if (threads == th) { threads = th->next; @@ -319,3 +322,24 @@ static void process_delete(struct process *pr) { } kfree(pr); } + +int process_setheapseg(size_t start, size_t end) { //syscall + struct process *p = current_thread->process; + if (start >= 0xE0000000 || end >= 0xE0000000) return -1; + if (p->heapseg == 0) { + struct segment *s = simpleseg_make(start, end - start, 1); + if (s == 0) return -5; + p->heapseg = seg_map(s, p->pagedir, 0); + if (p->heapseg == 0) return -1; + return 0; + } else if (p->heapseg->start != start) { + seg_unmap(p->heapseg); + struct segment *s = simpleseg_make(start, end - start, 1); + if (s == 0) return -5; + p->heapseg = seg_map(s, p->pagedir, 0); + if (p->heapseg == 0) return -1; + return 0; + } else { + return simpleseg_resize(p->heapseg, end - start); + } +} |