ADTarm-ehast-experimentalenumforall-pointer-decayjacob/cs343-translationnew-astnew-ast-unique-exprpthread-emulationqualifiedEnum
Last change
on this file since 2802824 was
b002261,
checked in by Thierry Delisle <tdelisle@…>, 6 years ago
|
Busy program now supports variable number of threads
|
-
Property mode set to
100644
|
File size:
1.3 KB
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Rev | Line | |
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[2c39855] | 1 | #include <stdbool.h> |
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[b002261] | 2 | #include <stdio.h> |
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[2c39855] | 3 | #include <stdlib.h> |
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| 4 | #include <pthread.h> |
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| 5 | |
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| 6 | struct S { |
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| 7 | int i, j, k, l, m, n; |
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| 8 | }; |
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| 9 | |
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| 10 | void * CallingMalloc( void * arg __attribute__((unused)) ) { |
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| 11 | for ( volatile int i = 0; i < 10000; i += 1 ) { |
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| 12 | volatile int * ip = (volatile int *)malloc( sizeof( int ) * 1 ); |
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| 13 | volatile int * aip = (volatile int *)malloc( sizeof( int ) * 100 ); |
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| 14 | volatile struct S * sp = (volatile struct S *)malloc( sizeof(struct S) * 200 ); |
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| 15 | |
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| 16 | sp->i = 0; |
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| 17 | sp->j = 1; |
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| 18 | sp->k = 2; |
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| 19 | sp->l = 3; |
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| 20 | sp->m = 4; |
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| 21 | sp->n = 5; |
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| 22 | for(int j = 0; j < 100; j++) { |
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| 23 | aip[j] = j; |
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| 24 | } |
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| 25 | *ip = i; |
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| 26 | |
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| 27 | free( (void*)sp ); |
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| 28 | free( (void*)aip ); |
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| 29 | free( (void*)ip ); |
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| 30 | } |
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| 31 | return NULL; |
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| 32 | } |
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| 33 | |
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[b002261] | 34 | int main(int argc, const char * const argv[]) { |
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| 35 | char * endptr; |
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| 36 | int nThreads = 15; |
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| 37 | switch(argc) { |
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| 38 | case 1: |
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| 39 | break; |
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| 40 | case 2: |
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| 41 | nThreads = strtol(argv[1], &endptr, 10); |
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| 42 | if( *endptr != 0 || nThreads <= 0 ) { |
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| 43 | fprintf(stderr, "Invalid number of threads %s\n", argv[1]); |
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| 44 | return 1; |
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| 45 | } |
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| 46 | break; |
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| 47 | default: |
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| 48 | fprintf(stderr, "Usage: %s [no of threads]\n", argv[0]); |
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| 49 | return 1; |
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| 50 | } |
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| 51 | printf("Running %d threads\n", nThreads); |
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| 52 | while(true) { |
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| 53 | pthread_t t[nThreads]; |
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| 54 | for(int i = 0; i < nThreads; i++) { |
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| 55 | pthread_create( &t[i], NULL, CallingMalloc, NULL ); |
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| 56 | } |
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[2c39855] | 57 | |
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[b002261] | 58 | for(int i = 0; i < nThreads; i++) { |
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| 59 | pthread_join( t[i], NULL ); |
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| 60 | } |
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| 61 | } |
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| 62 | return 0; |
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[2c39855] | 63 | } |
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