b9b45c5e45
Use/Test this by loading the user space elf from the kernel process before it starts rather than as a part of the first thread. This simplifies thread start a fair bit.
57 lines
1.2 KiB
C++
57 lines
1.2 KiB
C++
#include "scheduler/process.h"
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#include "debug/debug.h"
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#include "memory/paging_util.h"
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#include "memory/physical_memory.h"
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#include "scheduler/scheduler.h"
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#include "scheduler/thread.h"
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namespace {
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static uint64_t gNextId = 1;
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}
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SharedPtr<Process> Process::RootProcess() {
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uint64_t pml4_addr = 0;
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asm volatile("mov %%cr3, %0;" : "=r"(pml4_addr));
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SharedPtr<Process> proc(new Process(0, pml4_addr));
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proc->threads_.PushBack(Thread::RootThread(proc.ptr()));
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proc->next_thread_id_ = 1;
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return proc;
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}
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Process::Process() : id_(gNextId++), state_(RUNNING) {
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cr3_ = phys_mem::AllocatePage();
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InitializePml4(cr3_);
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}
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void Process::CreateThread(uint64_t entry) {
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Thread* thread = new Thread(this, next_thread_id_++, entry);
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threads_.PushBack(thread);
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gScheduler->Enqueue(thread);
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}
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SharedPtr<Thread> Process::GetThread(uint64_t tid) {
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auto iter = threads_.begin();
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while (iter != threads_.end()) {
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if (iter->tid() == tid) {
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return *iter;
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}
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++iter;
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}
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panic("Bad thread access.");
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return nullptr;
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}
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void Process::CheckState() {
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auto iter = threads_.begin();
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while (iter != threads_.end()) {
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if (iter->GetState() != Thread::FINISHED) {
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return;
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}
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++iter;
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}
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state_ = FINISHED;
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}
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