| 1 | /** @file
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| 2 | *
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| 3 | * Testcase for bug #1023 autoincrement of file handles.
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| 4 | *
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| 5 | * InnoTek Systemberatung GmbH confidential
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| 6 | *
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| 7 | * Copyright (c) 2004 InnoTek Systemberatung GmbH
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| 8 | * Author: knut st. osmundsen <bird-srcspam@anduin.net>
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| 9 | *
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| 10 | * All Rights Reserved
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| 11 | *
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| 12 | */
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| 13 |
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| 14 | /*******************************************************************************
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| 15 | * Header Files *
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| 16 | *******************************************************************************/
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| 17 | #define INCL_DOS
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| 18 | #define INCL_DOSINFOSEG
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| 19 | #ifdef __IBMC__
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| 20 | #include "../src/emx/include/os2emx.h"
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| 21 | #else
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| 22 | #include <os2.h>
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| 23 | #endif
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| 24 | #include <stdio.h>
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| 25 | #include <io.h>
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| 26 | #include <fcntl.h>
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| 27 | #include <string.h>
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| 28 |
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| 29 |
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| 30 |
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| 31 | int main(int argc, const char **argv)
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| 32 | {
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| 33 | int i,j;
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| 34 | LONG lFHDelta = 0;
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| 35 | ULONG cFHs = 0;
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| 36 | ULONG cFHLast;
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| 37 | unsigned msLastInc;
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| 38 | unsigned msEnd;
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| 39 | unsigned msStart;
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| 40 | unsigned msTotal = 0;
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| 41 | unsigned cFiles = 0;
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| 42 | unsigned cIncrements = 0;
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| 43 | int fStreams;
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| 44 | PGINFOSEG pGIS = GETGINFOSEG();
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| 45 | #define MAX_FHS 10000
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| 46 | static FILE *apFiles[MAX_FHS];
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| 47 | static int aiFiles[MAX_FHS];
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| 48 |
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| 49 | DosSetRelMaxFH(&lFHDelta, &cFHs);
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| 50 | printf("cFHs=%d\n", cFHs);
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| 51 |
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| 52 | /* check for args */
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| 53 | fStreams = argc >= 2;
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| 54 |
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| 55 | cFHLast = cFHs;
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| 56 | msLastInc = pGIS->msecs;
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| 57 | for (i = 0; i < MAX_FHS; i++)
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| 58 | {
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| 59 | msStart = pGIS->msecs;
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| 60 | if (fStreams)
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| 61 | apFiles[i] = fopen(argv[argc - 1], "rb");
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| 62 | else
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| 63 | aiFiles[i] = open(argv[argc - 1], O_BINARY | O_RDONLY);
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| 64 | msEnd = pGIS->msecs;
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| 65 | if (fStreams ? apFiles[i] == NULL : aiFiles[i] < 0)
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| 66 | {
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| 67 | printf("error %d!\n", i + 1);
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| 68 | break;
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| 69 | }
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| 70 |
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| 71 | lFHDelta = cFHs = 0;
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| 72 | DosSetRelMaxFH(&lFHDelta, &cFHs);
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| 73 | lFHDelta = cFHs = 0;
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| 74 | DosSetRelMaxFH(&lFHDelta, &cFHs);
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| 75 | if (cFHs != cFHLast)
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| 76 | {
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| 77 | printf("Max FH change %i (fh=%d): %d -> %d (inc: %d ms since last: %d ms)\n",
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| 78 | i + 1, fStreams ? fileno(apFiles[i]) : aiFiles[i],
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| 79 | cFHLast, cFHs, msEnd - msStart, msStart - msLastInc);
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| 80 | /* stats */
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| 81 | cIncrements++;
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| 82 | msTotal += msEnd - msLastInc;
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| 83 | msEnd = msLastInc = pGIS->msecs;
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| 84 | }
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| 85 | cFHLast = cFHs;
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| 86 | }
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| 87 |
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| 88 | msTotal += msEnd - msLastInc;
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| 89 | cFiles = i;
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| 90 |
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| 91 | lFHDelta = cFHs = 0;
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| 92 | DosSetRelMaxFH(&lFHDelta, &cFHs);
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| 93 | printf("cFHs=%d\n", cFHs);
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| 94 | printf("msTotal=%d cIncrements=%d cFiles=%d i.e. %d handles per second\n",
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| 95 | msTotal, cIncrements, cFiles, cFiles * 1000 / msTotal);
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| 96 |
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| 97 | /*
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| 98 | * Free the files.
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| 99 | */
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| 100 | msStart = pGIS->msecs;
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| 101 | if (fStreams)
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| 102 | {
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| 103 | for (j = 0; j < i; j++)
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| 104 | fclose(apFiles[j]);
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| 105 | }
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| 106 | else
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| 107 | {
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| 108 | for (j = 0; j < i; j++)
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| 109 | close(aiFiles[j]);
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| 110 | }
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| 111 | msEnd = pGIS->msecs;
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| 112 | printf("close of %d files took %d ms\n", j, msEnd - msStart);
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| 113 |
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| 114 | /*
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| 115 | * Report the result.
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| 116 | */
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| 117 | if (i < 9900)
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| 118 | {
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| 119 | printf("1023-maxfilehandles: failed, could only open %d handles, expected > 9900\n", i);
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| 120 | return 1;
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| 121 | }
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| 122 |
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| 123 | printf("1023-maxfilehandles: succeeded opening %d handles.\n", i);
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| 124 | return 0;
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| 125 | }
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