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Viewing changes to src/mongo/util/logfile.cpp

  • Committer: Package Import Robot
  • Author(s): Adam Conrad
  • Date: 2014-03-27 00:47:53 UTC
  • Revision ID: package-import@ubuntu.com-20140327004753-gfflsyu804txqh33
Tags: 2.4.9-0ubuntu3
d/p/0099-Pagesize-hacks.patch: Apply some hacks for non-4k pages.

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src/mongo/util/logfile.cpp
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#include "mongo/util/startup_test.h"
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#include "mongo/util/text.h"
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#define PAGESIZE sysconf(_SC_PAGESIZE)
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using namespace mongoutils;
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            if( 0 && debug ) {
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                try {
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                    LogFile f("logfile_test");
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                    void *p = malloc(16384);
 
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                    void *p = malloc(4*PAGESIZE);
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                    char *buf = (char*) p;
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                    buf += 4095;
 
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                    buf += PAGESIZE - 1;
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                    buf = (char*) (((size_t)buf)&(~0xfff));
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                    memset(buf, 'z', 8192);
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                    buf[8190] = '\n';
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                    buf[8191] = 'B';
 
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                    buf[2 * PAGESIZE - 2] = '\n';
 
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                    buf[2 * PAGESIZE - 1] = 'B';
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                    buf[0] = 'A';
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                    f.synchronousAppend(buf, 8192);
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                    f.synchronousAppend(buf, 8192);
 
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                    f.synchronousAppend(buf, 2 * PAGESIZE);
 
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                    f.synchronousAppend(buf, 2 * PAGESIZE);
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                    free(p);
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                }
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                catch(DBException& e ) {
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        fassert( 16144, charsToWrite >= 0 );
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        fassert( 16142, _fd >= 0 );
 
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// Disabling alignment test on PPC64 due to a 64kB page size on PPC64 instead of 4kB on x86
 
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#ifndef __PPC64__
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        fassert( 16143, reinterpret_cast<ssize_t>( buf ) % g_minOSPageSizeBytes == 0 );  // aligned
 
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#endif
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#ifdef POSIX_FADV_DONTNEED
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        const off_t pos = lseek(_fd, 0, SEEK_CUR); // doesn't actually seek, just get current position