initclk.c (2159B)
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* This Source Code Form is subject to the terms of the Mozilla Public 3 * License, v. 2.0. If a copy of the MPL was not distributed with this 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 5 6 /* 7 * This is a regression test for the bug that the interval timer 8 * is not initialized when _PR_CreateCPU calls PR_IntervalNow. 9 * The bug would make this test program finish prematurely, 10 * when the SHORT_TIMEOUT period expires. The correct behavior 11 * is for the test to finish when the LONG_TIMEOUT period expires. 12 */ 13 14 #include "prlock.h" 15 #include "prcvar.h" 16 #include "prthread.h" 17 #include "prinrval.h" 18 #include "prlog.h" 19 #include <stdio.h> 20 #include <stdlib.h> 21 22 /* The timeouts, in milliseconds */ 23 #define SHORT_TIMEOUT 1000 24 #define LONG_TIMEOUT 3000 25 26 PRLock *lock1, *lock2; 27 PRCondVar *cv1, *cv2; 28 29 void ThreadFunc(void* arg) { 30 PR_Lock(lock1); 31 PR_WaitCondVar(cv1, PR_MillisecondsToInterval(SHORT_TIMEOUT)); 32 PR_Unlock(lock1); 33 } 34 35 int main(int argc, char** argv) { 36 PRThread* thread; 37 PRIntervalTime start, end; 38 PRUint32 elapsed_ms; 39 40 lock1 = PR_NewLock(); 41 PR_ASSERT(NULL != lock1); 42 cv1 = PR_NewCondVar(lock1); 43 PR_ASSERT(NULL != cv1); 44 lock2 = PR_NewLock(); 45 PR_ASSERT(NULL != lock2); 46 cv2 = PR_NewCondVar(lock2); 47 PR_ASSERT(NULL != cv2); 48 start = PR_IntervalNow(); 49 thread = PR_CreateThread(PR_USER_THREAD, ThreadFunc, NULL, PR_PRIORITY_NORMAL, 50 PR_LOCAL_THREAD, PR_JOINABLE_THREAD, 0); 51 PR_ASSERT(NULL != thread); 52 PR_Lock(lock2); 53 PR_WaitCondVar(cv2, PR_MillisecondsToInterval(LONG_TIMEOUT)); 54 PR_Unlock(lock2); 55 PR_JoinThread(thread); 56 end = PR_IntervalNow(); 57 elapsed_ms = PR_IntervalToMilliseconds((PRIntervalTime)(end - start)); 58 /* Allow -100ms/+200ms imprecision */ 59 if (elapsed_ms < LONG_TIMEOUT - 100 || elapsed_ms > LONG_TIMEOUT + 200) { 60 printf("Elapsed time should be %u ms but is %u ms\n", LONG_TIMEOUT, 61 elapsed_ms); 62 printf("FAIL\n"); 63 exit(1); 64 } 65 printf("Elapsed time: %u ms, expected time: %u ms\n", LONG_TIMEOUT, 66 elapsed_ms); 67 printf("PASS\n"); 68 return 0; 69 }