1 | /* |
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2 | * swift_context.c |
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3 | * |
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4 | * (c) 2009 Ionut Rosoiu <ionut.rosoiu@gmail.com> |
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5 | * |
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6 | */ |
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7 | |
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8 | #include <stdlib.h> |
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9 | #include <stdio.h> |
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10 | #include <unistd.h> |
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11 | #include "swift.h" |
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12 | |
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13 | #define NUM_THREADS 2 |
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14 | #define MAX_VAL 100 |
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15 | |
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16 | swift_deque_t deque; |
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17 | int vals[MAX_VAL]; |
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18 | swift_frame_t frames[MAX_VAL]; |
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19 | |
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20 | void* pusher(void *arg) { |
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21 | swift_status_t status; |
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22 | int i, j = 0; |
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23 | |
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24 | printf("pusher started.\n"); |
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25 | for (i=0; i<MAX_VAL; i++) { |
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26 | do { |
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27 | swift_deque_push(&deque, &frames[j++], &status); |
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28 | } while (status == SWIFT_DEQUE_FULL); |
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29 | } |
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30 | printf("pusher finished.\n"); |
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31 | |
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32 | return arg; |
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33 | } |
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34 | |
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35 | void* popper(void *arg) { |
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36 | swift_status_t status; |
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37 | swift_frame_t *frame; |
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38 | int i; |
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39 | |
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40 | printf("popper started.\n"); |
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41 | for (i=0; i<MAX_VAL; i++) { |
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42 | frame = swift_deque_pop(&deque, &status); |
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43 | if (frame) { |
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44 | vals[frame->dependencies_no] = 1; |
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45 | } |
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46 | } |
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47 | printf("popper finished.\n"); |
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48 | |
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49 | return arg; |
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50 | } |
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51 | |
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52 | void* stealer(void *arg) { |
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53 | swift_status_t status; |
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54 | swift_thread_t *thread = arg; |
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55 | swift_frame_t *frame; |
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56 | int i; |
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57 | |
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58 | printf("stealer %d started\n", thread->id); |
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59 | for (i=0; i<MAX_VAL + 1; i++) { |
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60 | do { |
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61 | frame = swift_deque_steal(&deque, &status); |
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62 | } while (status == SWIFT_DEQUE_ABORT); |
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63 | |
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64 | if (frame) { |
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65 | printf("[S] pop %d (%p)\n", frame->dependencies_no, (void*)frame); |
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66 | vals[frame->dependencies_no] = 1; |
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67 | } |
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68 | } |
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69 | printf("stealer %d finished.\n", thread->id); |
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70 | |
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71 | return arg; |
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72 | } |
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73 | |
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74 | swift_entrypoint_t funcs[4] = { |
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75 | pusher, // must be first |
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76 | popper, |
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77 | stealer, |
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78 | stealer |
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79 | }; |
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80 | |
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81 | int main() { |
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82 | swift_thread_t threads[NUM_THREADS]; |
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83 | int i; |
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84 | |
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85 | //swift_assert(NUM_THREADS == 4); |
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86 | |
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87 | /* initialize the deque */ |
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88 | swift_deque_init(&threads[0], &deque, MAX_VAL); |
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89 | |
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90 | /* initialize the value vector */ |
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91 | for (i=0; i<MAX_VAL; i++) { |
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92 | frames[i].dependencies_no = i; |
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93 | vals[i] = 0; |
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94 | } |
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95 | |
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96 | /* start the threads */ |
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97 | for (i=0; i<NUM_THREADS; i++) { |
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98 | threads[i].id = i; |
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99 | |
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100 | swift_thread_start(&threads[i], funcs[i]); |
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101 | } |
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102 | |
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103 | printf("cleaning-up...\n"); |
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104 | |
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105 | /* clean-up */ |
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106 | for (i=0; i<NUM_THREADS; i++) { |
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107 | swift_thread_wait(&threads[i]); |
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108 | printf("thread %d done.\n", i); |
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109 | } |
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110 | |
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111 | for (i=0; i<MAX_VAL; i++) { |
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112 | printf("%d ", i); |
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113 | swift_assert(vals[i]); |
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114 | } |
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115 | |
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116 | swift_deque_destroy(&threads[0], &deque); |
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117 | |
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118 | return 0; |
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119 | } |
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