96 lines
2.7 KiB
C++
96 lines
2.7 KiB
C++
#include "ProcFileSystem.h"
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#include "Task.h"
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static ProcFileSystem* s_the;
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ProcFileSystem& ProcFileSystem::the()
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{
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ASSERT(s_the);
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return *s_the;
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}
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RetainPtr<ProcFileSystem> ProcFileSystem::create()
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{
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return adopt(*new ProcFileSystem);
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}
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ProcFileSystem::ProcFileSystem()
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{
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s_the = this;
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}
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ProcFileSystem::~ProcFileSystem()
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{
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}
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void ProcFileSystem::addProcess(Task& task)
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{
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ASSERT_INTERRUPTS_DISABLED();
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char buf[16];
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ksprintf(buf, "%d", task.pid());
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auto dir = addFile(createDirectory(buf));
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m_pid2inode.set(task.pid(), dir.index());
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addFile(createGeneratedFile("vm", [&task] {
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InterruptDisabler disabler;
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char* buffer;
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auto stringImpl = StringImpl::createUninitialized(80 + task.regionCount() * 80, buffer);
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memset(buffer, 0, stringImpl->length());
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char* ptr = buffer;
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ptr += ksprintf(ptr, "BEGIN END SIZE NAME\n");
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for (auto& region : task.regions()) {
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ptr += ksprintf(ptr, "%x -- %x %x %s\n",
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region->linearAddress.get(),
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region->linearAddress.offset(region->size - 1).get(),
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region->size,
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region->name.characters());
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}
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*ptr = '\0';
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return ByteBuffer::copy((byte*)buffer, ptr - buffer);
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}), dir.index());
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}
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void ProcFileSystem::removeProcess(Task& task)
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{
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ASSERT_INTERRUPTS_DISABLED();
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auto pid = task.pid();
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auto it = m_pid2inode.find(pid);
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ASSERT(it != m_pid2inode.end());
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bool success = removeFile((*it).value);
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ASSERT(success);
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m_pid2inode.remove(pid);
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}
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bool ProcFileSystem::initialize()
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{
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SyntheticFileSystem::initialize();
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addFile(createGeneratedFile("summary", [] {
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InterruptDisabler disabler;
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auto tasks = Task::allTasks();
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char* buffer;
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auto stringImpl = StringImpl::createUninitialized(tasks.size() * 256, buffer);
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memset(buffer, 0, stringImpl->length());
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char* ptr = buffer;
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ptr += ksprintf(ptr, "PID OWNER STATE PPID NSCHED FDS NAME\n");
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for (auto* task : tasks) {
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ptr += ksprintf(ptr, "%w %w:%w %b %w %x %w %s\n",
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task->pid(),
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task->uid(),
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task->gid(),
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task->state(),
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task->parentPID(),
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task->timesScheduled(),
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task->fileHandleCount(),
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task->name().characters());
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}
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ptr += ksprintf(ptr, "kmalloc: alloc: %u / free: %u\n", sum_alloc, sum_free);
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*ptr = '\0';
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return ByteBuffer::copy((byte*)buffer, ptr - buffer);
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}));
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return true;
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}
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const char* ProcFileSystem::className() const
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{
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return "procfs";
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}
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