Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 255 insertions, 0 deletions

diff --git a/nsprpub/pr/tests/lockfile.c b/nsprpub/pr/tests/lockfile.c
new file mode 100644
index 0000000000..883ef0d615
--- /dev/null
+++ b/nsprpub/pr/tests/lockfile.c
@@ -0,0 +1,255 @@
+/* -*- 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/. */
+
+/*
+** File:        lockfile.c
+** Purpose:     test basic locking functions
+**              Just because this times stuff, don't think its a perforamnce
+**              test!!!
+**
+** Modification History:
+** 19-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 "prcmon.h"
+#include "prerror.h"
+#include "prinit.h"
+#include "prinrval.h"
+#include "prlock.h"
+#include "prlog.h"
+#include "prmon.h"
+#include "prthread.h"
+#include "prtypes.h"
+
+#include "private/pprio.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+PRIntn failed_already=0;
+PRIntn debug_mode;
+
+const static PRIntervalTime contention_interval = 50;
+
+typedef struct LockContentious_s {
+    PRLock *ml;
+    PRInt32 loops;
+    PRIntervalTime overhead;
+    PRIntervalTime interval;
+} LockContentious_t;
+
+#define LOCKFILE "prlock.fil"
+
+
+
+static PRIntervalTime NonContentiousLock(PRInt32 loops)
+{
+    PRFileDesc *_lockfile;
+    while (loops-- > 0)
+    {
+        _lockfile = PR_Open(LOCKFILE, PR_CREATE_FILE|PR_RDWR, 0666);
+        if (!_lockfile) {
+            if (debug_mode) printf(
+                    "could not create lockfile: %d [%d]\n",
+                    PR_GetError(), PR_GetOSError());
+            return PR_INTERVAL_NO_TIMEOUT;
+        }
+        PR_LockFile(_lockfile);
+        PR_UnlockFile(_lockfile);
+        PR_Close(_lockfile);
+    }
+    return 0;
+}  /* NonContentiousLock */
+
+static void PR_CALLBACK LockContender(void *arg)
+{
+    LockContentious_t *contention = (LockContentious_t*)arg;
+    PRFileDesc *_lockfile;
+    while (contention->loops-- > 0)
+    {
+        _lockfile = PR_Open(LOCKFILE, PR_CREATE_FILE|PR_RDWR, 0666);
+        if (!_lockfile) {
+            if (debug_mode) printf(
+                    "could not create lockfile: %d [%d]\n",
+                    PR_GetError(), PR_GetOSError());
+            break;
+        }
+        PR_LockFile(_lockfile);
+        PR_Sleep(contention->interval);
+        PR_UnlockFile(_lockfile);
+        PR_Close(_lockfile);
+    }
+
+}  /* LockContender */
+
+/*
+** Win16 requires things passed to Threads not be on the stack
+*/
+static LockContentious_t contention;
+
+static PRIntervalTime ContentiousLock(PRInt32 loops)
+{
+    PRStatus status;
+    PRThread *thread = NULL;
+    PRIntervalTime overhead, timein = PR_IntervalNow();
+
+    contention.loops = loops;
+    contention.overhead = 0;
+    contention.ml = PR_NewLock();
+    contention.interval = contention_interval;
+    thread = PR_CreateThread(
+                 PR_USER_THREAD, LockContender, &contention,
+                 PR_PRIORITY_LOW, PR_LOCAL_THREAD, PR_JOINABLE_THREAD, 0);
+    PR_ASSERT(thread != NULL);
+
+    overhead = PR_IntervalNow() - timein;
+
+    while (contention.loops > 0)
+    {
+        PR_Lock(contention.ml);
+        contention.overhead += contention.interval;
+        PR_Sleep(contention.interval);
+        PR_Unlock(contention.ml);
+    }
+
+    timein = PR_IntervalNow();
+    status = PR_JoinThread(thread);
+    PR_DestroyLock(contention.ml);
+    overhead += (PR_IntervalNow() - timein);
+    return overhead + contention.overhead;
+}  /* ContentiousLock */
+
+static PRIntervalTime Test(
+    const char* msg, PRIntervalTime (*test)(PRInt32 loops),
+    PRInt32 loops, PRIntervalTime overhead)
+{
+    /*
+     * overhead - overhead not measured by the test.
+     * duration - wall clock time it took to perform test.
+     * predicted - extra time test says should not be counted
+     *
+     * Time accountable to the test is duration - overhead - predicted
+     * All times are Intervals and accumulated for all iterations.
+     */
+    PRFloat64 elapsed;
+    PRIntervalTime accountable, duration;
+    PRUintn spaces = strlen(msg);
+    PRIntervalTime timeout, timein = PR_IntervalNow();
+    PRIntervalTime predicted = test(loops);
+    timeout = PR_IntervalNow();
+    duration = timeout - timein;
+    accountable = duration - predicted;
+    accountable -= overhead;
+    elapsed = (PRFloat64)PR_IntervalToMicroseconds(accountable);
+    if (debug_mode) {
+        printf("%s:", msg);
+    }
+    while (spaces++ < 50) if (debug_mode) {
+            printf(" ");
+        }
+    if ((PRInt32)accountable < 0) {
+        if (debug_mode) {
+            printf("*****.** usecs/iteration\n");
+        }
+    } else {
+        if (debug_mode) {
+            printf("%8.2f usecs/iteration\n", elapsed/loops);
+        }
+    }
+    return duration;
+}  /* Test */
+
+int main(int argc,  char **argv)
+{
+    PRIntervalTime duration;
+    PRUint32 cpu, cpus = 2;
+    PRInt32 loops = 100;
+
+
+    /* 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, "d:");
+    while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
+    {
+        if (PL_OPT_BAD == os) {
+            continue;
+        }
+        switch (opt->option)
+        {
+            case 'd':  /* debug mode */
+                debug_mode = 1;
+                break;
+            default:
+                break;
+        }
+    }
+    PL_DestroyOptState(opt);
+
+    /* main test */
+
+    PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
+    PR_STDIO_INIT();
+
+    if (argc > 1) {
+        loops = atoi(argv[1]);
+    }
+    if (loops == 0) {
+        loops = 100;
+    }
+    if (debug_mode) {
+        printf("Lock: Using %d loops\n", loops);
+    }
+
+    cpus = (argc < 3) ? 2 : atoi(argv[2]);
+    if (cpus == 0) {
+        cpus = 2;
+    }
+    if (debug_mode) {
+        printf("Lock: Using %d cpu(s)\n", cpus);
+    }
+
+
+    for (cpu = 1; cpu <= cpus; ++cpu)
+    {
+        if (debug_mode) {
+            printf("\nLockFile: Using %d CPU(s)\n", cpu);
+        }
+        PR_SetConcurrency(cpu);
+
+        duration = Test("LockFile non-contentious locking/unlocking", NonContentiousLock, loops, 0);
+        (void)Test("LockFile contentious locking/unlocking", ContentiousLock, loops, duration);
+    }
+
+    PR_Delete(LOCKFILE);  /* try to get rid of evidence */
+
+    if (debug_mode) {
+        printf("%s: test %s\n", "Lock(mutex) test", ((failed_already) ? "failed" : "passed"));
+    }
+    if(failed_already) {
+        return 1;
+    }
+    else {
+        return 0;
+    }
+}  /* main */
+
+/* testlock.c */