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Diffstat (limited to 'nsprpub/pr/tests/ranfile.c')
| -rw-r--r-- | nsprpub/pr/tests/ranfile.c | 390 |
1 files changed, 390 insertions, 0 deletions
diff --git a/nsprpub/pr/tests/ranfile.c b/nsprpub/pr/tests/ranfile.c new file mode 100644 index 000000000..08a4a98b8 --- /dev/null +++ b/nsprpub/pr/tests/ranfile.c @@ -0,0 +1,390 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/*********************************************************************** +** +** Contact: AOF<freier@netscape.com> +** +** Name: ranfile.c +** +** Description: Test to hammer on various components of NSPR +** Modification History: +** 20-May-97 AGarcia- Converted the test to accomodate the debug_mode flag. +** The debug mode will print all of the printfs associated with this test. +** The regress mode will be the default mode. Since the regress tool limits +** the output to a one line status:PASS or FAIL,all of the printf statements +** have been handled with an if (debug_mode) statement. +** 04-June-97 AGarcia removed the Test_Result function. Regress tool has been updated to +** recognize the return code from tha main program. +***********************************************************************/ + + +/*********************************************************************** +** Includes +***********************************************************************/ +/* Used to get the command line option */ +#include "plgetopt.h" + +#include "prinit.h" +#include "prthread.h" +#include "prlock.h" +#include "prcvar.h" +#include "prmem.h" +#include "prinrval.h" +#include "prio.h" + +#include <string.h> +#include <stdio.h> + +static PRIntn debug_mode = 0; +static PRIntn failed_already=0; +static PRThreadScope thread_scope = PR_LOCAL_THREAD; + +typedef enum {sg_go, sg_stop, sg_done} Action; +typedef enum {sg_okay, sg_open, sg_close, sg_delete, sg_write, sg_seek} Problem; + +typedef struct Hammer_s { + PRLock *ml; + PRCondVar *cv; + PRUint32 id; + PRUint32 limit; + PRUint32 writes; + PRThread *thread; + PRIntervalTime timein; + Action action; + Problem problem; +} Hammer_t; + +#define DEFAULT_LIMIT 10 +#define DEFAULT_THREADS 2 +#define DEFAULT_LOOPS 1 + +static PRInt32 pageSize = 1024; +static const char* baseName = "./"; +static const char *programName = "Random File"; + +/*********************************************************************** +** PRIVATE FUNCTION: RandomNum +** DESCRIPTION: +** Generate a pseudo-random number +** INPUTS: None +** OUTPUTS: None +** RETURN: A pseudo-random unsigned number, 32-bits wide +** SIDE EFFECTS: +** Updates random seed (a static) +** RESTRICTIONS: +** None +** MEMORY: NA +** ALGORITHM: +** Uses the current interval timer value, promoted to a 64 bit +** float as a multiplier for a static residue (which begins +** as an uninitialized variable). The result is bits [16..48) +** of the product. Seed is then updated with the return value +** promoted to a float-64. +***********************************************************************/ +static PRUint32 RandomNum(void) +{ + PRUint32 rv; + PRUint64 shift; + static PRFloat64 seed = 0x58a9382; /* Just make sure it isn't 0! */ + PRFloat64 random = seed * (PRFloat64)PR_IntervalNow(); + LL_USHR(shift, *((PRUint64*)&random), 16); + LL_L2UI(rv, shift); + seed = (PRFloat64)rv; + return rv; +} /* RandomNum */ + +/*********************************************************************** +** PRIVATE FUNCTION: Thread +** DESCRIPTION: +** Hammer on the file I/O system +** INPUTS: A pointer to the thread's private data +** OUTPUTS: None +** RETURN: None +** SIDE EFFECTS: +** Creates, accesses and deletes a file +** RESTRICTIONS: +** (Currently) must have file create permission in "/usr/tmp". +** MEMORY: NA +** ALGORITHM: +** This function is a root of a thread +** 1) Creates a (hopefully) unique file in /usr/tmp/ +** 2) Writes a zero to a random number of sequential pages +** 3) Closes the file +** 4) Reopens the file +** 5) Seeks to a random page within the file +** 6) Writes a one byte on that page +** 7) Repeat steps [5..6] for each page in the file +** 8) Close and delete the file +** 9) Repeat steps [1..8] until told to stop +** 10) Notify complete and return +***********************************************************************/ +static void PR_CALLBACK Thread(void *arg) +{ + PRUint32 index; + char filename[30]; + const char zero = 0; + PRFileDesc *file = NULL; + PRStatus rv = PR_SUCCESS; + Hammer_t *cd = (Hammer_t*)arg; + + (void)sprintf(filename, "%ssg%04ld.dat", baseName, cd->id); + + if (debug_mode) printf("Starting work on %s\n", filename); + + while (PR_TRUE) + { + PRUint32 bytes; + PRUint32 minor = (RandomNum() % cd->limit) + 1; + PRUint32 random = (RandomNum() % cd->limit) + 1; + PRUint32 pages = (RandomNum() % cd->limit) + 10; + while (minor-- > 0) + { + cd->problem = sg_okay; + if (cd->action != sg_go) goto finished; + cd->problem = sg_open; + file = PR_Open(filename, PR_RDWR|PR_CREATE_FILE, 0666); + if (file == NULL) goto finished; + for (index = 0; index < pages; index++) + { + cd->problem = sg_okay; + if (cd->action != sg_go) goto close; + cd->problem = sg_seek; + bytes = PR_Seek(file, pageSize * index, PR_SEEK_SET); + if (bytes != pageSize * index) goto close; + cd->problem = sg_write; + bytes = PR_Write(file, &zero, sizeof(zero)); + if (bytes <= 0) goto close; + cd->writes += 1; + } + cd->problem = sg_close; + rv = PR_Close(file); + if (rv != PR_SUCCESS) goto purge; + + cd->problem = sg_okay; + if (cd->action != sg_go) goto purge; + + cd->problem = sg_open; + file = PR_Open(filename, PR_RDWR, 0666); + for (index = 0; index < pages; index++) + { + cd->problem = sg_okay; + if (cd->action != sg_go) goto close; + cd->problem = sg_seek; + bytes = PR_Seek(file, pageSize * index, PR_SEEK_SET); + if (bytes != pageSize * index) goto close; + cd->problem = sg_write; + bytes = PR_Write(file, &zero, sizeof(zero)); + if (bytes <= 0) goto close; + cd->writes += 1; + random = (random + 511) % pages; + } + cd->problem = sg_close; + rv = PR_Close(file); + if (rv != PR_SUCCESS) goto purge; + cd->problem = sg_delete; + rv = PR_Delete(filename); + if (rv != PR_SUCCESS) goto finished; + } + } + +close: + (void)PR_Close(file); +purge: + (void)PR_Delete(filename); +finished: + PR_Lock(cd->ml); + cd->action = sg_done; + PR_NotifyCondVar(cd->cv); + PR_Unlock(cd->ml); + + if (debug_mode) printf("Ending work on %s\n", filename); + + return; +} /* Thread */ + +static Hammer_t hammer[100]; +static PRCondVar *cv; +/*********************************************************************** +** PRIVATE FUNCTION: main +** DESCRIPTION: +** Hammer on the file I/O system +** INPUTS: The usual argc and argv +** argv[0] - program name (not used) +** argv[1] - the number of times to execute the major loop +** argv[2] - the number of threads to toss into the batch +** argv[3] - the clipping number applied to randoms +** default values: loops = 2, threads = 10, limit = 57 +** OUTPUTS: None +** RETURN: None +** SIDE EFFECTS: +** Creates, accesses and deletes lots of files +** RESTRICTIONS: +** (Currently) must have file create permission in "/usr/tmp". +** MEMORY: NA +** ALGORITHM: +** 1) Fork a "Thread()" +** 2) Wait for 'interleave' seconds +** 3) For [0..'threads') repeat [1..2] +** 4) Mark all objects to stop +** 5) Collect the threads, accumulating the results +** 6) For [0..'loops') repeat [1..5] +** 7) Print accumulated results and exit +** +** Characteristic output (from IRIX) +** Random File: Using loops = 2, threads = 10, limit = 57 +** Random File: [min [avg] max] writes/sec average +***********************************************************************/ +int main(int argc, char **argv) +{ + PRLock *ml; + PRUint32 id = 0; + int active, poll; + PRIntervalTime interleave; + PRIntervalTime duration = 0; + int limit = 0, loops = 0, threads = 0, times; + PRUint32 writes, writesMin = 0x7fffffff, writesTot = 0, durationTot = 0, writesMax = 0; + + const char *where[] = {"okay", "open", "close", "delete", "write", "seek"}; + + /* The command line argument: -d is used to determine if the test is being run + in debug mode. The regress tool requires only one line output:PASS or FAIL. + All of the printfs associated with this test has been handled with a if (debug_mode) + test. + Usage: test_name -d + */ + PLOptStatus os; + PLOptState *opt = PL_CreateOptState(argc, argv, "Gdl:t:i:"); + while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) + { + if (PL_OPT_BAD == os) continue; + switch (opt->option) + { + case 'G': /* global threads */ + thread_scope = PR_GLOBAL_THREAD; + break; + case 'd': /* debug mode */ + debug_mode = 1; + break; + case 'l': /* limiting number */ + limit = atoi(opt->value); + break; + case 't': /* number of threads */ + threads = atoi(opt->value); + break; + case 'i': /* iteration counter */ + loops = atoi(opt->value); + break; + default: + break; + } + } + PL_DestroyOptState(opt); + + /* main test */ + + PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0); + PR_STDIO_INIT(); + + interleave = PR_SecondsToInterval(10); + + ml = PR_NewLock(); + cv = PR_NewCondVar(ml); + + if (loops == 0) loops = DEFAULT_LOOPS; + if (limit == 0) limit = DEFAULT_LIMIT; + if (threads == 0) threads = DEFAULT_THREADS; + + if (debug_mode) printf( + "%s: Using loops = %d, threads = %d, limit = %d and %s threads\n", + programName, loops, threads, limit, + (thread_scope == PR_LOCAL_THREAD) ? "LOCAL" : "GLOBAL"); + + for (times = 0; times < loops; ++times) + { + if (debug_mode) printf("%s: Setting concurrency level to %d\n", programName, times + 1); + PR_SetConcurrency(times + 1); + for (active = 0; active < threads; active++) + { + hammer[active].ml = ml; + hammer[active].cv = cv; + hammer[active].id = id++; + hammer[active].writes = 0; + hammer[active].action = sg_go; + hammer[active].problem = sg_okay; + hammer[active].limit = (RandomNum() % limit) + 1; + hammer[active].timein = PR_IntervalNow(); + hammer[active].thread = PR_CreateThread( + PR_USER_THREAD, Thread, &hammer[active], + PR_GetThreadPriority(PR_GetCurrentThread()), + thread_scope, PR_JOINABLE_THREAD, 0); + + PR_Lock(ml); + PR_WaitCondVar(cv, interleave); /* start new ones slowly */ + PR_Unlock(ml); + } + + /* + * The last thread started has had the opportunity to run for + * 'interleave' seconds. Now gather them all back in. + */ + PR_Lock(ml); + for (poll = 0; poll < threads; poll++) + { + if (hammer[poll].action == sg_go) /* don't overwrite done */ + hammer[poll].action = sg_stop; /* ask him to stop */ + } + PR_Unlock(ml); + + while (active > 0) + { + for (poll = 0; poll < threads; poll++) + { + PR_Lock(ml); + while (hammer[poll].action < sg_done) + PR_WaitCondVar(cv, PR_INTERVAL_NO_TIMEOUT); + PR_Unlock(ml); + + active -= 1; /* this is another one down */ + (void)PR_JoinThread(hammer[poll].thread); + hammer[poll].thread = NULL; + if (hammer[poll].problem == sg_okay) + { + duration = PR_IntervalToMilliseconds( + PR_IntervalNow() - hammer[poll].timein); + writes = hammer[poll].writes * 1000 / duration; + if (writes < writesMin) + writesMin = writes; + if (writes > writesMax) + writesMax = writes; + writesTot += hammer[poll].writes; + durationTot += duration; + } + else + if (debug_mode) printf( + "%s: test failed %s after %ld seconds\n", + programName, where[hammer[poll].problem], duration); + else failed_already=1; + } + } + } + if (debug_mode) printf( + "%s: [%ld [%ld] %ld] writes/sec average\n", + programName, writesMin, writesTot * 1000 / durationTot, writesMax); + + PR_DestroyCondVar(cv); + PR_DestroyLock(ml); + + if (failed_already) + { + printf("FAIL\n"); + return 1; + } + else + { + printf("PASS\n"); + return 0; + } +} /* main */ |