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Process now maps regions immediately when they are allocated.

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This avoids having to do a separate MM.mapRegionsForTask() pass.

Also, more Task => Process renaming that I apparently hadn't saved yet.
This commit is contained in:
Andreas Kling 2018-11-01 13:15:46 +01:00
commit 3e532ac7b6
Notes: sideshowbarker 2024-07-19 18:34:59 +09:00
14 changed files with 327 additions and 387 deletions
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86
Kernel/ProcFileSystem.cpp
View file

@ -1,5 +1,5 @@
#include "ProcFileSystem.h"
#include "Task.h"
#include "Process.h"
#include <VirtualFileSystem/VirtualFileSystem.h>
#include "system.h"
#include "MemoryManager.h"
@ -27,24 +27,24 @@ ProcFileSystem::~ProcFileSystem()
{
}
ByteBuffer procfs$pid_vm(const Task& task)
ByteBuffer procfs$pid_vm(const Process& process)
{
InterruptDisabler disabler;
char* buffer;
auto stringImpl = StringImpl::createUninitialized(80 + task.regionCount() * 80 + 80 + task.subregionCount() * 80, buffer);
auto stringImpl = StringImpl::createUninitialized(80 + process.regionCount() * 80 + 80 + process.subregionCount() * 80, buffer);
memset(buffer, 0, stringImpl->length());
char* ptr = buffer;
ptr += ksprintf(ptr, "BEGIN END SIZE NAME\n");
for (auto& region : task.regions()) {
for (auto& region : process.regions()) {
ptr += ksprintf(ptr, "%x -- %x %x %s\n",
region->linearAddress.get(),
region->linearAddress.offset(region->size - 1).get(),
region->size,
region->name.characters());
}
if (task.subregionCount()) {
if (process.subregionCount()) {
ptr += ksprintf(ptr, "\nREGION OFFSET BEGIN END SIZE NAME\n");
for (auto& subregion : task.subregions()) {
for (auto& subregion : process.subregions()) {
ptr += ksprintf(ptr, "%x %x %x -- %x %x %s\n",
subregion->region->linearAddress.get(),
subregion->offset,
@ -58,18 +58,18 @@ ByteBuffer procfs$pid_vm(const Task& task)
return ByteBuffer::copy((byte*)buffer, ptr - buffer);
}
ByteBuffer procfs$pid_stack(Task& task)
ByteBuffer procfs$pid_stack(Process& process)
{
InterruptDisabler disabler;
OtherTaskPagingScope pagingScope(task);
OtherProcessPagingScope pagingScope(process);
struct RecognizedSymbol {
dword address;
const KSym* ksym;
};
Vector<RecognizedSymbol> recognizedSymbols;
if (auto* eipKsym = ksymbolicate(task.tss().eip))
recognizedSymbols.append({ task.tss().eip, eipKsym });
for (dword* stackPtr = (dword*)task.framePtr(); task.isValidAddressForKernel(LinearAddress((dword)stackPtr)); stackPtr = (dword*)*stackPtr) {
if (auto* eipKsym = ksymbolicate(process.tss().eip))
recognizedSymbols.append({ process.tss().eip, eipKsym });
for (dword* stackPtr = (dword*)process.framePtr(); process.isValidAddressForKernel(LinearAddress((dword)stackPtr)); stackPtr = (dword*)*stackPtr) {
dword retaddr = stackPtr[1];
if (auto* ksym = ksymbolicate(retaddr))
recognizedSymbols.append({ retaddr, ksym });
@ -90,33 +90,33 @@ ByteBuffer procfs$pid_stack(Task& task)
return buffer;
}
ByteBuffer procfs$pid_exe(Task& task)
ByteBuffer procfs$pid_exe(Process& process)
{
InodeIdentifier inode;
{
InterruptDisabler disabler;
inode = task.executableInode();
inode = process.executableInode();
}
return VirtualFileSystem::the().absolutePath(inode).toByteBuffer();
}
void ProcFileSystem::addProcess(Task& task)
void ProcFileSystem::addProcess(Process& process)
{
ASSERT_INTERRUPTS_DISABLED();
char buf[16];
ksprintf(buf, "%d", task.pid());
ksprintf(buf, "%d", process.pid());
auto dir = addFile(createDirectory(buf));
m_pid2inode.set(task.pid(), dir.index());
addFile(createGeneratedFile("vm", [&task] { return procfs$pid_vm(task); }), dir.index());
addFile(createGeneratedFile("stack", [&task] { return procfs$pid_stack(task); }), dir.index());
if (task.executableInode().isValid())
addFile(createGeneratedFile("exe", [&task] { return procfs$pid_exe(task); }, 00120777), dir.index());
m_pid2inode.set(process.pid(), dir.index());
addFile(createGeneratedFile("vm", [&process] { return procfs$pid_vm(process); }), dir.index());
addFile(createGeneratedFile("stack", [&process] { return procfs$pid_stack(process); }), dir.index());
if (process.executableInode().isValid())
addFile(createGeneratedFile("exe", [&process] { return procfs$pid_exe(process); }, 00120777), dir.index());
}
void ProcFileSystem::removeProcess(Task& task)
void ProcFileSystem::removeProcess(Process& process)
{
ASSERT_INTERRUPTS_DISABLED();
auto pid = task.pid();
auto pid = process.pid();
auto it = m_pid2inode.find(pid);
ASSERT(it != m_pid2inode.end());
bool success = removeFile((*it).value);
@ -172,18 +172,18 @@ ByteBuffer procfs$kmalloc()
return buffer;
}
static const char* toString(Task::State state)
static const char* toString(Process::State state)
{
switch (state) {
case Task::Invalid: return "Invalid";
case Task::Runnable: return "Runnable";
case Task::Running: return "Running";
case Task::Terminated: return "Term";
case Task::Crashing: return "Crash";
case Task::Exiting: return "Exit";
case Task::BlockedSleep: return "Sleep";
case Task::BlockedWait: return "Wait";
case Task::BlockedRead: return "Read";
case Process::Invalid: return "Invalid";
case Process::Runnable: return "Runnable";
case Process::Running: return "Running";
case Process::Terminated: return "Term";
case Process::Crashing: return "Crash";
case Process::Exiting: return "Exit";
case Process::BlockedSleep: return "Sleep";
case Process::BlockedWait: return "Wait";
case Process::BlockedRead: return "Read";
}
ASSERT_NOT_REACHED();
return nullptr;
@ -192,20 +192,20 @@ static const char* toString(Task::State state)
ByteBuffer procfs$summary()
{
InterruptDisabler disabler;
auto tasks = Task::allTasks();
auto buffer = ByteBuffer::createUninitialized(tasks.size() * 256);
auto processes = Process::allProcesses();
auto buffer = ByteBuffer::createUninitialized(processes.size() * 256);
char* ptr = (char*)buffer.pointer();
ptr += ksprintf(ptr, "PID OWNER STATE PPID NSCHED FDS TTY NAME\n");
for (auto* task : tasks) {
for (auto* process : processes) {
ptr += ksprintf(ptr, "% 5u % 4u % 8s % 5u % 10u % 3u % 4s %s\n",
task->pid(),
task->uid(),
toString(task->state()),
task->parentPID(),
task->timesScheduled(),
task->fileHandleCount(),
task->tty() ? strrchr(task->tty()->ttyName().characters(), '/') + 1 : "n/a",
task->name().characters());
process->pid(),
process->uid(),
toString(process->state()),
process->parentPID(),
process->timesScheduled(),
process->fileHandleCount(),
process->tty() ? strrchr(process->tty()->ttyName().characters(), '/') + 1 : "n/a",
process->name().characters());
}
*ptr = '\0';
buffer.trim(ptr - (char*)buffer.pointer());