mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
fbc053e018
- Introduce __assert_disable global - Improve strsignal() thread safety - Make system call tracing thread safe - Fix SO_RCVTIMEO / SO_SNDTIMEO on Windows - Refactor DescribeFoo() functions into one place - Fix fork() on Windows when TLS and MAP_STACK exist - Round upwards in setsockopt(SO_RCVTIMEO) on Windows - Disable futexes on OpenBSD which seem extremely broken - Implement a better kludge for monotonic time on Windows
67 lines
3.6 KiB
C
67 lines
3.6 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/fmt/itoa.h"
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#include "libc/intrin/describeflags.internal.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/macros.internal.h"
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#include "libc/runtime/memtrack.internal.h"
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#define ADDR(x) ((intptr_t)((int64_t)((uint64_t)(x) << 32) >> 16))
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static bool IsNoteworthyHole(unsigned i, const struct MemoryIntervals *mm) {
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// gaps between shadow frames aren't interesting
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// the chasm from heap to stack ruins statistics
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return !(
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(IsArenaFrame(mm->p[i].y) && !IsArenaFrame(mm->p[i + 1].x)) ||
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(IsShadowFrame(mm->p[i].y) || IsShadowFrame(mm->p[i + 1].x)) ||
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(!IsStaticStackFrame(mm->p[i].y) && IsStaticStackFrame(mm->p[i + 1].x)));
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}
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void PrintMemoryIntervals(int fd, const struct MemoryIntervals *mm) {
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char *p, mappingbuf[8], framebuf[32];
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long i, w, frames, maptally = 0, gaptally = 0;
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for (w = i = 0; i < mm->i; ++i) {
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w = MAX(w, LengthInt64Thousands(mm->p[i].y + 1 - mm->p[i].x));
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}
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for (i = 0; i < mm->i; ++i) {
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frames = mm->p[i].y + 1 - mm->p[i].x;
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maptally += frames;
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kprintf("%08x-%08x %s %'*ldx%s", mm->p[i].x, mm->p[i].y,
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(DescribeMapping)(mappingbuf, mm->p[i].prot, mm->p[i].flags), w,
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frames, (DescribeFrame)(framebuf, mm->p[i].x));
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if (mm->p[i].iscow) kprintf(" cow");
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if (mm->p[i].readonlyfile) kprintf(" readonlyfile");
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if (mm->p[i].size !=
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(size_t)(mm->p[i].y - mm->p[i].x) * FRAMESIZE + FRAMESIZE) {
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kprintf(" size=%'zu", mm->p[i].size);
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}
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if (i + 1 < mm->i) {
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frames = mm->p[i + 1].x - mm->p[i].y - 1;
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if (frames && IsNoteworthyHole(i, mm)) {
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gaptally += frames;
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kprintf(" w/ %'ld frame hole", frames);
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}
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}
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if (mm->p[i].h != -1) {
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kprintf(" h=%ld", mm->p[i].h);
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}
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kprintf("\n");
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}
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kprintf("# %ld frames mapped w/ %'ld frames gapped\n", maptally, gaptally);
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}
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