mirror of
https://github.com/Mathewnd/Astral.git
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proc: separate from sched
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@@ -10,6 +10,7 @@
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#include <kernel/signal.h>
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#include <kernel/itimer.h>
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#include <kernel/event.h>
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#include <kernel/proc.h>
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#define SCHED_THREAD_FLAGS_QUEUED 1
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#define SCHED_THREAD_FLAGS_RUNNING 2
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@@ -27,130 +28,7 @@
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#define STACK_TOP (void *)0x0000800000000000
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#define INTERP_BASE (void *)0x00000beef0000000
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struct proc_t;
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typedef struct thread_t {
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void *kernelstacktop;
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struct thread_t *next;
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struct thread_t *prev;
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struct thread_t *sleepnext;
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struct thread_t *sleepprev;
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struct thread_t *procnext;
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struct proc_t *proc;
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struct cpu_t *cpu;
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struct cpu_t *cputarget;
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context_t context;
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extracontext_t extracontext;
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void *kernelstack;
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size_t kernelstacksize;
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vmmcontext_t *vmmctx;
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tid_t tid;
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int flags;
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long priority;
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bool sleepintstatus;
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spinlock_t sleeplock;
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int wakeupreason;
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bool shouldexit;
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void *kernelarg;
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context_t *usercopyctx;
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struct {
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spinlock_t lock;
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eventheader_t waitpendingevent;
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stack_t stack;
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sigset_t mask;
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sigset_t pending;
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sigset_t urgent; // always handled before returning to userspace
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sigset_t waiting; // for signal_wait
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sigset_t returnmask; // for signal_returnmask
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bool hasreturnmask;
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bool stopped;
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} signals;
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} thread_t;
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typedef struct proc_t {
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mutex_t mutex;
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int refcount;
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int status;
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int state;
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struct proc_t *sibling;
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struct proc_t *parent;
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struct proc_t *child;
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pid_t pid;
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cred_t cred;
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spinlock_t threadlistlock;
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thread_t *threadlist;
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bool nomorethreads;
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size_t runningthreadcount;
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size_t fdcount;
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uintmax_t fdfirst;
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mutex_t fdmutex;
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struct fd_t *fd;
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mode_t umask;
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int flags;
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vnode_t *cwd;
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vnode_t *root;
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spinlock_t nodeslock;
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semaphore_t waitsem;
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spinlock_t exiting;
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spinlock_t jobctllock;
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struct {
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// NULL if this process is leader
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struct proc_t *leader;
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// these are only applicable if the process is leader
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struct proc_t *foreground; // process group leader, NULL if self
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void *controllingtty;
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} session;
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struct {
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// NULL if this process is leader
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struct proc_t *leader;
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// linked list
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struct proc_t *nextmember;
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struct proc_t *previousmember;
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// these are only applicable if the process is leader
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spinlock_t lock; // protects the linked list
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} pgrp;
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struct {
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spinlock_t lock;
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sigaction_t actions[NSIG];
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sigset_t pending;
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bool stopunwaited;
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bool continueunwaited;
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} signals;
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struct {
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mutex_t mutex;
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itimer_t realtime;
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itimer_t virtualtime;
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itimer_t profiling;
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} timer;
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} proc_t;
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#include <arch/cpu.h>
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#define UMASK(mode) ((mode) & ~current_thread()->proc->umask)
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#define PROC_HOLD(v) __atomic_add_fetch(&(v)->refcount, 1, __ATOMIC_SEQ_CST)
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// the acquire of the pid table mutex is done here to prevent a nasty race condition where sched_inactiveproc could be called multiple times
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// due to the pid table itself not holding any references to the process
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#define PROC_RELEASE(v) {\
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MUTEX_ACQUIRE(&sched_pidtablemutex, false); \
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if (__atomic_sub_fetch(&(v)->refcount, 1, __ATOMIC_SEQ_CST) == 0) {\
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sched_inactiveproc(v); \
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(v) = NULL; \
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} \
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MUTEX_RELEASE(&sched_pidtablemutex); \
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}
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extern proc_t *sched_initproc;
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extern mutex_t sched_pidtablemutex;
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proc_t *sched_getprocfrompid(int pid);
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void sched_init();
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void sched_stopotherthreads();
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void sched_runinit();
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__attribute__((noreturn)) void sched_threadexit();
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void sched_queue(thread_t *thread);
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@@ -158,20 +36,11 @@ void sched_stopcurrentthread();
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int sched_yield();
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void sched_preparesleep(bool interruptible);
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bool sched_wakeup(thread_t *thread, int reason);
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proc_t *sched_newproc();
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vnode_t *sched_getcwd();
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vnode_t *sched_getroot();
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void sched_setcwd(vnode_t *);
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void sched_setroot(vnode_t *);
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thread_t *sched_newthread(void *ip, size_t kstacksize, int priority, proc_t *proc, void *ustack);
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void sched_destroyproc(proc_t *);
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void sched_destroythread(thread_t *);
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void sched_targetcpu(struct cpu_t *cpu);
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void sched_reschedule_on_cpu(struct cpu_t *cpu, bool target);
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void sched_sleepus(size_t us);
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void sched_apentry();
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void sched_inactiveproc(proc_t *proc);
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void sched_terminateprogram(int status);
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int sched_signalall(int signal, proc_t *sender);
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#endif
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