diff options
Diffstat (limited to 'pr/tests/fsync.c')
| -rw-r--r-- | pr/tests/fsync.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/pr/tests/fsync.c b/pr/tests/fsync.c new file mode 100644 index 00000000..38fb5e69 --- /dev/null +++ b/pr/tests/fsync.c @@ -0,0 +1,136 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* + * The contents of this file are subject to the Netscape Public License + * Version 1.0 (the "NPL"); you may not use this file except in + * compliance with the NPL. You may obtain a copy of the NPL at + * http://www.mozilla.org/NPL/ + * + * Software distributed under the NPL is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL + * for the specific language governing rights and limitations under the + * NPL. + * + * The Initial Developer of this code under the NPL is Netscape + * Communications Corporation. Portions created by Netscape are + * Copyright (C) 1998 Netscape Communications Corporation. All Rights + * Reserved. + */ + +#include "prio.h" +#include "prmem.h" +#include "prprf.h" +#include "prinrval.h" + +#include "plerror.h" +#include "plgetopt.h" + +static PRFileDesc *err = NULL; + +static void Help(void) +{ + PR_fprintf(err, "Usage: [-S] [-K <n>] [-h] <filename>\n"); + PR_fprintf(err, "\t-c Nuber of iterations (default: 10)\n"); + PR_fprintf(err, "\t-S Sync the file (default: FALSE)\n"); + PR_fprintf(err, "\t-K Size of file (K bytes) (default: 10)\n"); + PR_fprintf(err, "\t Name of file to write (default: /usr/tmp/sync.dat)\n"); + PR_fprintf(err, "\t-h This message and nothing else\n"); +} /* Help */ + +PRIntn main(PRIntn argc, char **argv) +{ + PRStatus rv; + PLOptStatus os; + PRUint8 *buffer; + PRFileDesc *file = NULL; + const char *filename = "/usr/tmp/sync.dat"; + PRUint32 index, loops, iterations = 10, filesize = 10; + PRIntn flags = PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE; + PLOptState *opt = PL_CreateOptState(argc, argv, "hSK:c:"); + PRIntervalTime time, total = 0, shortest = 0x7fffffff, longest = 0; + + err = PR_GetSpecialFD(PR_StandardError); + + while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) + { + if (PL_OPT_BAD == os) continue; + switch (opt->option) + { + case 0: /* Name of file to create */ + filename = opt->value; + break; + case 'S': /* Use sych option on file */ + flags |= PR_SYNC; + break; + case 'K': /* Size of file to write */ + filesize = atoi(opt->value); + break; + case 'c': /* Number of iterations */ + iterations = atoi(opt->value); + break; + case 'h': /* user wants some guidance */ + default: /* user needs some guidance */ + Help(); /* so give him an earful */ + return 2; /* but not a lot else */ + } + } + PL_DestroyOptState(opt); + + file = PR_Open(filename, flags, 0666); + if (NULL == file) + { + PL_FPrintError(err, "Failed to open file"); + return 1; + } + + buffer = (PRUint8*)PR_CALLOC(1024); + if (NULL == buffer) + { + PL_FPrintError(err, "Cannot allocate buffer"); + return 1; + } + + for (index = 0; index < sizeof(buffer); ++index) + buffer[index] = (PRUint8)index; + + for (loops = 0; loops < iterations; ++loops) + { + time = PR_IntervalNow(); + for (index = 0; index < filesize; ++index) + { + PR_Write(file, buffer, 1024); + } + time = (PR_IntervalNow() - time); + + total += time; + if (time < shortest) shortest = time; + else if (time > longest) longest = time; + if (0 != PR_Seek(file, 0, PR_SEEK_SET)) + { + PL_FPrintError(err, "Rewinding file"); + return 1; + } + } + + total = total / iterations; + PR_fprintf( + err, "%u iterations over a %u kbyte %sfile: %u [%u] %u\n", + iterations, filesize, ((flags & PR_SYNC) ? "SYNCH'd " : ""), + PR_IntervalToMicroseconds(shortest), + PR_IntervalToMicroseconds(total), + PR_IntervalToMicroseconds(longest)); + + PR_DELETE(buffer); + rv = PR_Close(file); + if (PR_SUCCESS != rv) + { + PL_FPrintError(err, "Closing file failed"); + return 1; + } + rv = PR_Delete(filename); + if (PR_SUCCESS != rv) + { + PL_FPrintError(err, "Deleting file failed"); + return 1; + } + return 0; +} |