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Multiple updates on sleeping, vma dropping and thread suspend.

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- Updated sleeping paths such that a task is atomically put into
  a runqueue and made RUNNABLE, or removed from a runqueue and made SLEEPING.
- Modified vma dropping sources to handle both copy_on_write() and exit() cases
  in a common function.
- Added the first infrastructure to have a pager to suspend a task and wait for
  suspend completion from the scheduler.
This commit is contained in:
Bahadir Balban
2008-10-13 12:22:10 +03:00
parent f6d0a79298
commit 0db0f7e334
23 changed files with 416 additions and 200 deletions
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2
tasks/mm0/include/task.h
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@@ -121,10 +121,12 @@ int task_setup_regions(struct vm_file *file, struct tcb *task,
int task_setup_registers(struct tcb *task, unsigned int pc,
unsigned int sp, l4id_t pager);
struct tcb *tcb_alloc_init(unsigned int flags);
int tcb_destroy(struct tcb *task);
int task_exec(struct vm_file *f, unsigned long task_region_start,
unsigned long task_region_end, struct task_ids *ids);
int task_start(struct tcb *task, struct task_ids *ids);
int copy_tcb(struct tcb *to, struct tcb *from, unsigned int flags);
int task_release_vmas(struct task_vma_head *vma_head);
struct tcb *task_create(struct tcb *orig,
struct task_ids *ids,
unsigned int ctrl_flags,