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products/Sources/formale Sprachen/C/Android/bionic/bionic/libc/bionic/ (Android Betriebssystem Version 17^©) Datei vom 26.5.2026 mit Größe 1 kB

Quelle posix_madvise.cpp

Sprache: C

/*
* Copyright (C) 2014 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*  * Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*  * Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in
*    the documentation and/or other materials provided with the
*    distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#include <errno.h>
#include <sys/mman.h>

#include "private/ErrnoRestorer.h"

int posix_madvise(void* addr, size_t len, int advice) {
  ErrnoRestorer errno_restorer;

  // Don't call madvise() on POSIX_MADV_DONTNEED, it will make the space not available.
  if (advice == POSIX_MADV_DONTNEED) {
    return 0;
  }
  return (madvise(addr, len, advice) == 0 ? 0 : errno);
}

Messung V0.5 in Prozent

¤ Dauer der Verarbeitung: 0.1 Sekunden (vorverarbeitet am 2026-06-28) ¤

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