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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
parent 86a9a52355
commit 712ae73581
9 changed files with 243 additions and 123 deletions
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16
Libraries/LibCore/CProcessStatisticsReader.cpp
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@ -26,13 +26,11 @@ HashMap<pid_t, CProcessStatistics> CProcessStatisticsReader::get_all()
// kernel data first
process.pid = process_object.get("pid").to_u32();
process.times_scheduled = process_object.get("times_scheduled").to_u32();
process.pgid = process_object.get("pgid").to_u32();
process.pgp = process_object.get("pgp").to_u32();
process.sid = process_object.get("sid").to_u32();
process.uid = process_object.get("uid").to_u32();
process.gid = process_object.get("gid").to_u32();
process.state = process_object.get("state").to_string();
process.ppid = process_object.get("ppid").to_u32();
process.nfds = process_object.get("nfds").to_u32();
process.name = process_object.get("name").to_string();
@ -40,14 +38,24 @@ HashMap<pid_t, CProcessStatistics> CProcessStatisticsReader::get_all()
process.amount_virtual = process_object.get("amount_virtual").to_u32();
process.amount_resident = process_object.get("amount_resident").to_u32();
process.amount_shared = process_object.get("amount_shared").to_u32();
process.ticks = process_object.get("ticks").to_u32();
process.priority = process_object.get("priority").to_string();
process.syscall_count = process_object.get("syscall_count").to_u32();
process.inode_faults = process_object.get("inode_faults").to_u32();
process.zero_faults = process_object.get("zero_faults").to_u32();
process.cow_faults = process_object.get("cow_faults").to_u32();
process.icon_id = process_object.get("icon_id").to_int();
auto thread_array = process_object.get("threads").as_array();
thread_array.for_each([&](auto& value) {
auto& thread_object = value.as_object();
CThreadStatistics thread;
thread.tid = thread_object.get("tid").to_u32();
thread.times_scheduled = thread_object.get("times_scheduled").to_u32();
thread.state = thread_object.get("state").to_string();
thread.ticks = thread_object.get("ticks").to_u32();
thread.priority = thread_object.get("priority").to_string();
process.threads.append(move(thread));
});
// and synthetic data last
process.username = username_from_uid(process.uid);
map.set(process.pid, process);