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Move the scheduler code to its own class.

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This is very mechanical.
This commit is contained in:
Andreas Kling 2018-11-07 22:15:02 +01:00
parent 6304c771dd
commit 39d2fcbbee
8 changed files with 336 additions and 318 deletions
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29
Kernel/Process.h
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@ -15,6 +15,14 @@ class PageDirectory;
class Region;
class Zone;
#define COOL_GLOBALS
#ifdef COOL_GLOBALS
struct CoolGlobals {
pid_t current_pid;
};
extern CoolGlobals* g_cool_globals;
#endif
struct SignalActionData {
LinearAddress handler_or_sigaction;
dword mask { 0 };
@ -59,7 +67,6 @@ public:
bool in_kernel() const { return (m_tss.cs & 0x03) == 0; }
static Process* from_pid(pid_t);
static Process* colonel_process();
const String& name() const { return m_name; }
pid_t pid() const { return m_pid; }
@ -93,10 +100,8 @@ public:
static void for_each_in_state(State, Function<bool(Process&)>);
static void for_each_not_in_state(State, Function<bool(Process&)>);
static void prepare_for_iret_to_new_process();
bool tick() { ++m_ticks; return --m_ticksLeft; }
void setTicksLeft(DWORD t) { m_ticksLeft = t; }
void set_ticks_left(dword t) { m_ticksLeft = t; }
void setSelector(WORD s) { m_farPtr.selector = s; }
void set_state(State s) { m_state = s; }
@ -124,8 +129,8 @@ public:
int sys$lseek(int fd, off_t, int whence);
int sys$kill(pid_t pid, int sig);
int sys$geterror() { return m_error; }
void sys$exit(int status);
void sys$sigreturn();
void sys$exit(int status) NORETURN;
void sys$sigreturn() NORETURN;
pid_t sys$spawn(const char* path, const char** args, const char** envp);
pid_t sys$waitpid(pid_t, int* wstatus, int options);
void* sys$mmap(void*, size_t size);
@ -155,7 +160,7 @@ public:
static void initialize();
void crash();
void crash() NORETURN;
const TTY* tty() const { return m_tty; }
@ -163,7 +168,7 @@ public:
const Vector<RetainPtr<Region>>& regions() const { return m_regions; }
void dumpRegions();
void didSchedule() { ++m_timesScheduled; }
void did_schedule() { ++m_timesScheduled; }
dword timesScheduled() const { return m_timesScheduled; }
pid_t waitee() const { return m_waitee; }
@ -195,7 +200,7 @@ public:
private:
friend class MemoryManager;
friend bool scheduleNewProcess();
friend class Scheduler;
Process(String&& name, uid_t, gid_t, pid_t ppid, RingLevel, RetainPtr<VirtualFileSystem::Node>&& cwd = nullptr, RetainPtr<VirtualFileSystem::Node>&& executable = nullptr, TTY* = nullptr, Process* fork_parent = nullptr);
@ -309,10 +314,8 @@ static inline const char* toString(Process::State state)
return nullptr;
}
extern int sched_yield();
extern bool scheduleNewProcess();
extern void switchNow();
extern void block(Process::State);
extern void sleep(DWORD ticks);
extern Process* current;
extern InlineLinkedList<Process>* g_processes;
extern InlineLinkedList<Process>* g_dead_processes;