1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/nsprpub/pr/tests/fsync.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,123 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "prio.h"
1.10 +#include "prmem.h"
1.11 +#include "prprf.h"
1.12 +#include "prinrval.h"
1.13 +
1.14 +#include "plerror.h"
1.15 +#include "plgetopt.h"
1.16 +
1.17 +static PRFileDesc *err = NULL;
1.18 +
1.19 +static void Help(void)
1.20 +{
1.21 + PR_fprintf(err, "Usage: [-S] [-K <n>] [-h] <filename>\n");
1.22 + PR_fprintf(err, "\t-c Nuber of iterations (default: 10)\n");
1.23 + PR_fprintf(err, "\t-S Sync the file (default: FALSE)\n");
1.24 + PR_fprintf(err, "\t-K Size of file (K bytes) (default: 10)\n");
1.25 + PR_fprintf(err, "\t Name of file to write (default: /usr/tmp/sync.dat)\n");
1.26 + PR_fprintf(err, "\t-h This message and nothing else\n");
1.27 +} /* Help */
1.28 +
1.29 +int main(int argc, char **argv)
1.30 +{
1.31 + PRStatus rv;
1.32 + PLOptStatus os;
1.33 + PRUint8 *buffer;
1.34 + PRFileDesc *file = NULL;
1.35 + const char *filename = "sync.dat";
1.36 + PRUint32 index, loops, iterations = 10, filesize = 10;
1.37 + PRIntn flags = PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE;
1.38 + PLOptState *opt = PL_CreateOptState(argc, argv, "hSK:c:");
1.39 + PRIntervalTime time, total = 0, shortest = 0x7fffffff, longest = 0;
1.40 +
1.41 + err = PR_GetSpecialFD(PR_StandardError);
1.42 +
1.43 + while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
1.44 + {
1.45 + if (PL_OPT_BAD == os) continue;
1.46 + switch (opt->option)
1.47 + {
1.48 + case 0: /* Name of file to create */
1.49 + filename = opt->value;
1.50 + break;
1.51 + case 'S': /* Use sych option on file */
1.52 + flags |= PR_SYNC;
1.53 + break;
1.54 + case 'K': /* Size of file to write */
1.55 + filesize = atoi(opt->value);
1.56 + break;
1.57 + case 'c': /* Number of iterations */
1.58 + iterations = atoi(opt->value);
1.59 + break;
1.60 + case 'h': /* user wants some guidance */
1.61 + default: /* user needs some guidance */
1.62 + Help(); /* so give him an earful */
1.63 + return 2; /* but not a lot else */
1.64 + }
1.65 + }
1.66 + PL_DestroyOptState(opt);
1.67 +
1.68 + file = PR_Open(filename, flags, 0666);
1.69 + if (NULL == file)
1.70 + {
1.71 + PL_FPrintError(err, "Failed to open file");
1.72 + return 1;
1.73 + }
1.74 +
1.75 + buffer = (PRUint8*)PR_CALLOC(1024);
1.76 + if (NULL == buffer)
1.77 + {
1.78 + PL_FPrintError(err, "Cannot allocate buffer");
1.79 + return 1;
1.80 + }
1.81 +
1.82 + for (index = 0; index < sizeof(buffer); ++index)
1.83 + buffer[index] = (PRUint8)index;
1.84 +
1.85 + for (loops = 0; loops < iterations; ++loops)
1.86 + {
1.87 + time = PR_IntervalNow();
1.88 + for (index = 0; index < filesize; ++index)
1.89 + {
1.90 + PR_Write(file, buffer, 1024);
1.91 + }
1.92 + time = (PR_IntervalNow() - time);
1.93 +
1.94 + total += time;
1.95 + if (time < shortest) shortest = time;
1.96 + else if (time > longest) longest = time;
1.97 + if (0 != PR_Seek(file, 0, PR_SEEK_SET))
1.98 + {
1.99 + PL_FPrintError(err, "Rewinding file");
1.100 + return 1;
1.101 + }
1.102 + }
1.103 +
1.104 + total = total / iterations;
1.105 + PR_fprintf(
1.106 + err, "%u iterations over a %u kbyte %sfile: %u [%u] %u\n",
1.107 + iterations, filesize, ((flags & PR_SYNC) ? "SYNCH'd " : ""),
1.108 + PR_IntervalToMicroseconds(shortest),
1.109 + PR_IntervalToMicroseconds(total),
1.110 + PR_IntervalToMicroseconds(longest));
1.111 +
1.112 + PR_DELETE(buffer);
1.113 + rv = PR_Close(file);
1.114 + if (PR_SUCCESS != rv)
1.115 + {
1.116 + PL_FPrintError(err, "Closing file failed");
1.117 + return 1;
1.118 + }
1.119 + rv = PR_Delete(filename);
1.120 + if (PR_SUCCESS != rv)
1.121 + {
1.122 + PL_FPrintError(err, "Deleting file failed");
1.123 + return 1;
1.124 + }
1.125 + return 0;
1.126 +}
