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Rewrite Windows connect()

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Our old code wasn't working with projects like Qt that call connect() in
O_NONBLOCK mode multiple times. This change overhauls connect() to use a
simpler WSAConnect() API and follows the same pattern as cosmo accept().
This change also reduces the binary footprint of read(), which no longer
needs to depend on our enormous clock_gettime() function.
This commit is contained in:
Justine Tunney 2024-09-12 23:01:20 -07:00
parent 5469202ea8
commit e142124730
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GPG key ID: BE714B4575D6E328
25 changed files with 556 additions and 277 deletions
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113
test/libc/calls/sched_getcpu_test.c
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@ -1,113 +0,0 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2024 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/atomic.h"
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/intrin/atomic.h"
#include "libc/macros.h"
#include "libc/runtime/runtime.h"
#include "libc/testlib/subprocess.h"
#include "libc/testlib/testlib.h"
#include "libc/thread/thread.h"
#include "libc/thread/thread2.h"
int cpu_count;
void SetUpOnce(void) {
cpu_count = __get_cpu_count();
}
////////////////////////////////////////////////////////////////////////////////
// AFFINITY TEST
TEST(sched_getcpu, affinity_test) {
if (IsXnu())
return;
if (IsNetbsd())
return;
if (IsOpenbsd())
return;
SPAWN(fork);
int n = cpu_count;
for (int i = 0; i < n; ++i) {
cpu_set_t affinity;
CPU_ZERO(&affinity);
CPU_SET(i, &affinity);
ASSERT_EQ(
0, pthread_setaffinity_np(pthread_self(), sizeof(affinity), &affinity));
EXPECT_EQ(i, sched_getcpu());
}
EXITS(0);
}
////////////////////////////////////////////////////////////////////////////////
// KLUDGE TEST
#define THREADS 2
#define ITERATIONS 100000
int g_hits[256];
atomic_int g_sync;
int call_sched_getcpu(void) {
int res = sched_getcpu();
ASSERT_NE(-1, res);
ASSERT_GE(res, 0);
ASSERT_LT(res, cpu_count);
return res;
}
void *worker(void *arg) {
int ith = (long)arg;
int nth = THREADS;
for (int i = 0; i < ITERATIONS; ++i) {
// help execution of threads be interleaved
int sync = atomic_fetch_add(&g_sync, 1);
if (sync % nth == ith) {
g_hits[call_sched_getcpu() % ARRAYLEN(g_hits)]++;
}
}
return 0;
}
TEST(sched_getcpu, kludge_test) {
#ifdef __x86_64__
if (IsXnu())
return;
#endif
if (IsNetbsd())
return;
if (IsOpenbsd())
return;
if (cpu_count < THREADS)
return;
pthread_t th[THREADS];
for (int i = 0; i < THREADS; ++i)
ASSERT_EQ(0, pthread_create(th + i, 0, worker, (void *)(long)i));
for (int i = 0; i < THREADS; ++i)
ASSERT_EQ(0, pthread_join(th[i], 0));
int hit = 0;
for (int i = 0; i < ARRAYLEN(g_hits); ++i)
hit += !!g_hits[i];
ASSERT_GE(hit, THREADS);
}

6
test/libc/sock/connect_test.c
View file

@ -121,12 +121,6 @@ TEST(connect, nonblocking) {
ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, IPPROTO_TCP));
ASSERT_SYS(EINPROGRESS, -1,
connect(3, (struct sockaddr *)&addr, sizeof(addr)));
if (!IsLinux() && !IsNetbsd() && !IsXnu()) {
// this doens't work on linux and netbsd
// on MacOS this can EISCONN before accept() is called
ASSERT_SYS(EALREADY, -1,
connect(3, (struct sockaddr *)&addr, sizeof(addr)));
}
ASSERT_SYS(EAGAIN, -1, read(3, buf, 16));
*sem = 1;
{ // wait until connected