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Add primitive FIFO and hook it up to sys$pipe().

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It's now possible to do this in bash:

cat kernel.map | fgrep List

This is very cool! :^)
This commit is contained in:
Andreas Kling 2018-11-12 01:28:46 +01:00
parent 18e3ddf605
commit f1404aa948
13 changed files with 305 additions and 22 deletions
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5
Kernel/Process.h
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@ -52,6 +52,7 @@ public:
BlockedSleep,
BlockedWait,
BlockedRead,
BlockedWrite,
BlockedSignal,
};
@ -226,6 +227,8 @@ private:
int do_exec(const String& path, Vector<String>&& arguments, Vector<String>&& environment);
void push_value_on_stack(dword);
int alloc_fd();
PageDirectory* m_page_directory { nullptr };
Process* m_prev { nullptr };
@ -257,6 +260,7 @@ private:
pid_t m_waitee { -1 };
int m_waitee_status { 0 };
int m_fdBlockedOnRead { -1 };
int m_blocked_fd { -1 };
size_t m_max_open_file_descriptors { 16 };
SignalActionData m_signal_action_data[32];
dword m_pending_signals { 0 };
@ -337,6 +341,7 @@ static inline const char* toString(Process::State state)
case Process::BlockedSleep: return "Sleep";
case Process::BlockedWait: return "Wait";
case Process::BlockedRead: return "Read";
case Process::BlockedWrite: return "Write";
case Process::BlockedSignal: return "Signal";
case Process::BeingInspected: return "Inspect";
}