0c5bbac86e
The naive spinlock was not nearly enough to protect kmalloc from reentrancy problems. I don't want to deal with coming up with a fancy lock for kmalloc right now, so I made an InterruptDisabler thingy instead. It does CLI and then STI iff interrupts were previously enabled.
47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
#include "ProcFileSystem.h"
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#include "Task.h"
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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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}
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ProcFileSystem::~ProcFileSystem()
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{
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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() * 128, 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 NSCHED NAME\n");
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for (auto* task : tasks) {
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ptr += ksprintf(ptr, "%w %w:%w %b %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->timesScheduled(),
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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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