From patchwork Thu Oct 20 18:25:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yonggang Luo X-Patchwork-Id: 59233 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 29D64382DB21 for ; Thu, 20 Oct 2022 18:27:33 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 29D64382DB21 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1666290453; bh=iOj30/CcOtAMM0xID/reawrlwjNRU0Sz4fNvyAQNhf4=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Help:List-Subscribe:From:Reply-To:From; b=Sz6SJH0u/Wc1IQnbFGnG7xQJGmstadVignrYDyV3w8auvxaNy6zAHoj7tbR8sf429 NjHN9Heyn3pSbNprCIF0mFe+lzh3+3+0fd819+JXHYul/ribjg4T0gJ3KCYCKBsccy fjrcBKVrS1Sp8qIjQvyNeu2QOEfKIFKIq2zkc7qo= X-Original-To: elfutils-devel@sourceware.org Delivered-To: elfutils-devel@sourceware.org Received: from mail-pf1-x433.google.com (mail-pf1-x433.google.com [IPv6:2607:f8b0:4864:20::433]) by sourceware.org (Postfix) with ESMTPS id B6CC5384B122 for ; Thu, 20 Oct 2022 18:27:07 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org B6CC5384B122 Received: by mail-pf1-x433.google.com with SMTP id d10so338815pfh.6 for ; Thu, 20 Oct 2022 11:27:07 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=iOj30/CcOtAMM0xID/reawrlwjNRU0Sz4fNvyAQNhf4=; b=yexEKcqj6OvVkWaoSPOe4gqgdeAKJPuq/RQRYZTmvYeVN7RTfARy6xT4CYBGU/yPo7 naE190+ICnIqIHirc3aHIbrxtXu4AqtN2rUq1+pVQl1A8aHb3360rCPobl1qzflkYEwf P1RvPBwci38QznjG7QUbg0aBtXSPMij00EdaKbKlAWvgtGhn0WQjZ87i0HtCi0t3iqJS elmr8aHnqVN0dHh2svPutisE5O701M7m37ucIGgRyuLIHiJ/u4f/FdggjKPoTMetPrcj dr92HqKHeNZ8tlZk3sJonBrHnRofCqF7UQW5/1KAlBg9xHldONdWkNDiCdquh9pPgfOC jTIA== X-Gm-Message-State: ACrzQf3LVZGw/caJcObrLWA8yiPrgODJ/4wScRLmJFitkLxgt9IxhKP6 fjt02vI5jY5JfogFBt2iT/70YytijZXmlQ== X-Google-Smtp-Source: AMsMyM7/2lcLxsHeNSPJYIPnx4LJeIod15Joxjne9Z4DByTrXHY5fqRUX386QlR/eTha0sAbAQIlNw== X-Received: by 2002:a63:5d64:0:b0:446:983:b21d with SMTP id o36-20020a635d64000000b004460983b21dmr12818717pgm.441.1666290426221; Thu, 20 Oct 2022 11:27:06 -0700 (PDT) Received: from localhost.localdomain ([103.94.185.75]) by smtp.googlemail.com with ESMTPSA id w15-20020a17090a460f00b00202fbd9c21dsm115067pjg.48.2022.10.20.11.27.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Oct 2022 11:27:05 -0700 (PDT) To: elfutils-devel@sourceware.org Subject: [PATCH 20/25] Add function sys_get_page_size to replace platform dependent sysconf (_SC_PAGESIZE) Date: Fri, 21 Oct 2022 02:25:59 +0800 Message-Id: <20221020182603.815-21-luoyonggang@gmail.com> X-Mailer: git-send-email 2.36.1.windows.1 In-Reply-To: <20221020182603.815-1-luoyonggang@gmail.com> References: <20221020182603.815-1-luoyonggang@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-11.3 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: elfutils-devel@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Elfutils-devel mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-Patchwork-Original-From: Yonggang Luo via Elfutils-devel From: Yonggang Luo Reply-To: Yonggang Luo Errors-To: elfutils-devel-bounces+patchwork=sourceware.org@sourceware.org Sender: "Elfutils-devel" Signed-off-by: Yonggang Luo --- lib/crc32_file.c | 2 +- lib/system.c | 17 +++++++++++++++++ lib/system.h | 3 +++ libdw/dwarf_begin_elf.c | 2 +- libdwelf/dwelf_strtab.c | 2 +- libdwfl/linux-kernel-modules.c | 2 +- libdwfl/linux-proc-maps.c | 2 +- libelf/elf32_updatefile.c | 2 +- src/ar.c | 2 +- src/ranlib.c | 2 +- src/strings.c | 2 +- 11 files changed, 29 insertions(+), 9 deletions(-) diff --git a/lib/crc32_file.c b/lib/crc32_file.c index 66833702..45e1cc52 100644 --- a/lib/crc32_file.c +++ b/lib/crc32_file.c @@ -52,7 +52,7 @@ crc32_file (int fd, uint32_t *resp) void *mapped = mmap (NULL, mapsize, PROT_READ, MAP_PRIVATE, fd, 0); if (mapped == MAP_FAILED && errno == ENOMEM) { - const size_t pagesize = sysconf (_SC_PAGESIZE); + const size_t pagesize = sys_get_page_size(); mapsize = ((mapsize / 2) + pagesize - 1) & -pagesize; while (mapsize >= pagesize && (mapped = mmap (NULL, mapsize, PROT_READ, MAP_PRIVATE, diff --git a/lib/system.c b/lib/system.c index 0fd28968..9ce1b62e 100644 --- a/lib/system.c +++ b/lib/system.c @@ -28,7 +28,12 @@ the GNU Lesser General Public License along with this program. If not, see . */ +#include + #include "system.h" +#if defined(_WIN32) +#include +#endif ssize_t pwrite_retry(int fd, const void *buf, size_t len, off_t off) @@ -85,3 +90,15 @@ pread_retry(int fd, void *buf, size_t len, off_t off) return recvd; } + +size_t +sys_get_page_size(void) +{ +#ifdef _WIN32 + SYSTEM_INFO info; + GetSystemInfo(&info); + return info.dwPageSize; +#else + return sysconf (_SC_PAGESIZE); +#endif +} diff --git a/lib/system.h b/lib/system.h index 05b2d8f9..675ed221 100644 --- a/lib/system.h +++ b/lib/system.h @@ -154,6 +154,9 @@ write_retry (int fd, const void *buf, size_t len); ssize_t pread_retry (int fd, void *buf, size_t len, off_t off); +size_t +sys_get_page_size(void); + /* The demangler from libstdc++. */ extern char *__cxa_demangle (const char *mangled_name, char *output_buffer, size_t *length, int *status); diff --git a/libdw/dwarf_begin_elf.c b/libdw/dwarf_begin_elf.c index 8fcef335..0f13e2f5 100644 --- a/libdw/dwarf_begin_elf.c +++ b/libdw/dwarf_begin_elf.c @@ -502,7 +502,7 @@ dwarf_begin_elf (Elf *elf, Dwarf_Cmd cmd, Elf_Scn *scngrp) /* Default memory allocation size. */ - size_t mem_default_size = sysconf (_SC_PAGESIZE) - 4 * sizeof (void *); + size_t mem_default_size = sys_get_page_size() - 4 * sizeof (void *); assert (sizeof (struct Dwarf) < mem_default_size); /* Allocate the data structure. */ diff --git a/libdwelf/dwelf_strtab.c b/libdwelf/dwelf_strtab.c index c95f9467..293b2d93 100644 --- a/libdwelf/dwelf_strtab.c +++ b/libdwelf/dwelf_strtab.c @@ -86,7 +86,7 @@ dwelf_strtab_init (bool nullstr) { if (ps == 0) { - ps = sysconf (_SC_PAGESIZE); + ps = sys_get_page_size(); assert (sizeof (struct memoryblock) < ps - MALLOC_OVERHEAD); } diff --git a/libdwfl/linux-kernel-modules.c b/libdwfl/linux-kernel-modules.c index 58c0c417..65a58616 100644 --- a/libdwfl/linux-kernel-modules.c +++ b/libdwfl/linux-kernel-modules.c @@ -550,7 +550,7 @@ intuit_kernel_bounds (Dwarf_Addr *start, Dwarf_Addr *end, Dwarf_Addr *notes) *notes = *end; } - Dwarf_Addr round_kernel = sysconf (_SC_PAGESIZE); + Dwarf_Addr round_kernel = sys_get_page_size(); *start &= -(Dwarf_Addr) round_kernel; *end += round_kernel - 1; *end &= -(Dwarf_Addr) round_kernel; diff --git a/libdwfl/linux-proc-maps.c b/libdwfl/linux-proc-maps.c index 719cba68..40b8050b 100644 --- a/libdwfl/linux-proc-maps.c +++ b/libdwfl/linux-proc-maps.c @@ -422,7 +422,7 @@ dwfl_linux_proc_find_elf (Dwfl_Module *mod __attribute__ ((unused)), if (fd < 0) goto detach; - *elfp = elf_from_remote_memory (base, sysconf (_SC_PAGESIZE), NULL, + *elfp = elf_from_remote_memory (base, sys_get_page_size(), NULL, &read_proc_memory, &fd); close (fd); diff --git a/libelf/elf32_updatefile.c b/libelf/elf32_updatefile.c index 8229fd26..af4518b8 100644 --- a/libelf/elf32_updatefile.c +++ b/libelf/elf32_updatefile.c @@ -474,7 +474,7 @@ __elfw2(LIBELFBITS,updatemmap) (Elf *elf, int change_bo, size_t shnum) /* Make sure the content hits the disk. */ char *msync_start = ((char *) elf->map_address - + (elf->start_offset & ~(sysconf (_SC_PAGESIZE) - 1))); + + (elf->start_offset & ~(sys_get_page_size() - 1))); char *msync_end = ((char *) elf->map_address + elf->start_offset + ehdr->e_shoff + ehdr->e_shentsize * shnum); diff --git a/src/ar.c b/src/ar.c index 3bcb18fe..d01f8482 100644 --- a/src/ar.c +++ b/src/ar.c @@ -428,7 +428,7 @@ copy_content (Elf *elf, int newfd, off_t off, size_t n) assert (off + n <= len); /* Tell the kernel we will read all the pages sequentially. */ - size_t ps = sysconf (_SC_PAGESIZE); + size_t ps = sys_get_page_size(); if (n > 2 * ps) posix_madvise (rawfile + (off & ~(ps - 1)), n, POSIX_MADV_SEQUENTIAL); diff --git a/src/ranlib.c b/src/ranlib.c index 7838d69e..645b40ae 100644 --- a/src/ranlib.c +++ b/src/ranlib.c @@ -122,7 +122,7 @@ copy_content (Elf *elf, int newfd, off_t off, size_t n) assert (off + n <= len); /* Tell the kernel we will read all the pages sequentially. */ - size_t ps = sysconf (_SC_PAGESIZE); + size_t ps = sys_get_page_size(); if (n > 2 * ps) posix_madvise (rawfile + (off & ~(ps - 1)), n, POSIX_MADV_SEQUENTIAL); diff --git a/src/strings.c b/src/strings.c index 55b047be..3341760d 100644 --- a/src/strings.c +++ b/src/strings.c @@ -163,7 +163,7 @@ main (int argc, char *argv[]) elf_version (EV_CURRENT); /* Determine the page size. We will likely need it a couple of times. */ - ps = sysconf (_SC_PAGESIZE); + ps = sys_get_page_size(); struct stat st; int result = 0;