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Kernel: Expose per-thread information in /proc/all

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Previously it was not possible to see what each thread in a process was
up to, or how much CPU it was consuming. This patch fixes that.

SystemMonitor and "top" now show threads instead of just processes.
"ps" is gonna need some more fixing, but it at least builds for now.

Fixes #66.
This commit is contained in:
Andreas Kling 2019-11-26 21:25:45 +01:00
commit 712ae73581
Notes: sideshowbarker 2024-07-19 11:03:13 +09:00
9 changed files with 243 additions and 123 deletions
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14
Kernel/FileSystem/ProcFS.cpp
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@ -677,13 +677,11 @@ Optional<KBuffer> procfs$all(InodeIdentifier)
auto build_process = [&](const Process& process) {
auto process_object = array.add_object();
process_object.add("pid", process.pid());
process_object.add("times_scheduled", process.main_thread().times_scheduled());
process_object.add("pgid", process.tty() ? process.tty()->pgid() : 0);
process_object.add("pgp", process.pgid());
process_object.add("sid", process.sid());
process_object.add("uid", process.uid());
process_object.add("gid", process.gid());
process_object.add("state", process.main_thread().state_string());
process_object.add("ppid", process.ppid());
process_object.add("nfds", process.number_of_open_file_descriptors());
process_object.add("name", process.name());
@ -691,13 +689,21 @@ Optional<KBuffer> procfs$all(InodeIdentifier)
process_object.add("amount_virtual", (u32)process.amount_virtual());
process_object.add("amount_resident", (u32)process.amount_resident());
process_object.add("amount_shared", (u32)process.amount_shared());
process_object.add("ticks", process.main_thread().ticks());
process_object.add("priority", to_string(process.main_thread().priority()));
process_object.add("syscall_count", process.syscall_count());
process_object.add("inode_faults", process.inode_faults());
process_object.add("zero_faults", process.zero_faults());
process_object.add("cow_faults", process.cow_faults());
process_object.add("icon_id", process.icon_id());
auto thread_array = process_object.add_array("threads");
process.for_each_thread([&](const Thread& thread) {
auto thread_object = thread_array.add_object();
thread_object.add("tid", thread.tid());
thread_object.add("times_scheduled", thread.times_scheduled());
thread_object.add("ticks", thread.ticks());
thread_object.add("state", thread.state_string());
thread_object.add("priority", to_string(thread.priority()));
return IterationDecision::Continue;
});
};
build_process(*Scheduler::colonel());
for (auto* process : processes)