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Fix some win32 definitions

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You can now use psapi.dll and pdh.dll. Some TODOs for Windows have been
cleared out. We might have a working load average for the platform that
should help GNU Make work well.
This commit is contained in:
Justine Tunney 2022-03-22 19:51:27 -07:00
parent e2e0b042c1
commit c23b6ecc31
162 changed files with 847 additions and 153 deletions
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95
libc/calls/loadavg-nt.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/loadavg.internal.h"
#include "libc/calls/strace.internal.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/nexgen32e/nt2sysv.h"
#include "libc/nt/enum/accessmask.h"
#include "libc/nt/enum/pdh.h"
#include "libc/nt/enum/securityimpersonationlevel.h"
#include "libc/nt/enum/wt.h"
#include "libc/nt/errors.h"
#include "libc/nt/events.h"
#include "libc/nt/files.h"
#include "libc/nt/pdh.h"
#include "libc/nt/privilege.h"
#include "libc/nt/runtime.h"
#include "libc/nt/struct/luid.h"
#include "libc/nt/struct/pdhfmtcountervalue.h"
#include "libc/nt/struct/tokenprivileges.h"
#include "libc/nt/synchronization.h"
#include "libc/str/str.h"
/**
* @fileoverview sysinfo() on the new technology
* @kudos Giampaolo Rodola for teaching how to do load average
*/
#define LOAD_SAMPLING_INTERVAL 1 // in seconds
// https://github.com/torvalds/linux/blob/345671ea0f9258f410eb057b9ced9cefbbe5dc78/include/linux/sched/loadavg.h#L20-L23
#define LOAD1F .9200444146293232478931553241
#define LOAD5F .9834714538216174894737477501
#define LOAD15F .9944598480048967508795473394
double __ntloadavg[3];
static void LoadavgNtPoll(int64_t hCounter, bool32 timedOut) {
struct NtPdhFmtCountervalue c;
if (!PdhGetFormattedCounterValue(hCounter, kNtPdhFmtDouble, 0, &c)) {
__ntloadavg[0] = __ntloadavg[0] * LOAD1F + c.doubleValue * (1 - LOAD1F);
__ntloadavg[1] = __ntloadavg[1] * LOAD5F + c.doubleValue * (1 - LOAD5F);
__ntloadavg[2] = __ntloadavg[2] * LOAD15F + c.doubleValue * (1 - LOAD15F);
} else {
STRACE("PdhGetFormattedCounterValue(%ld) failed", hCounter);
}
}
static textstartup void LoadavgNtInit(void) {
int64_t hQuery, hCounter, hEvent, hWaiter;
if (!IsWindows()) return;
STRACE("LoadavgNtInit()");
if (PdhOpenQuery(0, 0, &hQuery)) {
STRACE("PdhOpenQuery failed");
return;
}
if (PdhAddEnglishCounter(hQuery, u"\\System\\Processor Queue Length", 0,
&hCounter)) {
STRACE("PdhAddEnglishCounter() failed");
return;
}
if (!(hEvent = CreateEvent(0, 0, 0, u"LoadUpdateEvent"))) {
STRACE("CreateEvent() failed");
return;
}
if (PdhCollectQueryDataEx(hQuery, LOAD_SAMPLING_INTERVAL, hEvent)) {
STRACE("PdhCollectQueryDataEx() failed");
return;
}
if (!RegisterWaitForSingleObject(
&hWaiter, hEvent, (void *)NT2SYSV(LoadavgNtPoll),
(void *)(intptr_t)hCounter, -1, kNtWtExecutedefault)) {
STRACE("RegisterWaitForSingleObject() failed");
return;
}
LoadavgNtPoll(hCounter, 0);
}
const void *const LoadavgNtCtor[] initarray = {LoadavgNtInit};