os_cp:threads
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision | ||
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os_cp:threads [2024/04/17 23:28] jkonczak |
os_cp:threads [2024/04/18 11:42] (current) jkonczak [Accessing the same data from multiple threads] |
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| Line 330: | Line 330: | ||
| char text[1020]; | char text[1020]; | ||
| - | void *updater(void *) { | + | void *updater(void * arg) { |
| while (1) | while (1) | ||
| for (char letter = 'a'; letter <= 'z'; ++letter) { | for (char letter = 'a'; letter <= 'z'; ++letter) { | ||
| Line 343: | Line 343: | ||
| pthread_t tid; | pthread_t tid; | ||
| pthread_create(&tid, NULL, updater, NULL); | pthread_create(&tid, NULL, updater, NULL); | ||
| - | while (getchar(), 1) | + | while (getchar() != EOF) |
| printf("version: %llu\n text: %s\n", version, text); | printf("version: %llu\n text: %s\n", version, text); | ||
| return 0; | return 0; | ||
| Line 358: | Line 358: | ||
| unsigned long long counter; | unsigned long long counter; | ||
| - | void *incrementer(void *) { | + | void *incrementer(void * arg) { |
| for (int i = 0; i < 1000; ++i) | for (int i = 0; i < 1000; ++i) | ||
| counter++; | counter++; | ||
| Line 374: | Line 374: | ||
| } | } | ||
| </code> | </code> | ||
| + | <html></div></html> | ||
| + | <html><div style="margin-top:-1.4em; line-height: 1em"></html> | ||
| + | <small>If the code above always returns the right answer, try to run it a million times: \\ | ||
| + | ''for X in `seq 1000000`; do RES=$(%%./%%//progname//); test "$RES" -ne 16000 && echo -e "\n$RES" && break || echo -n '.'; done'' | ||
| + | </small> | ||
| <html></div></html> | <html></div></html> | ||
os_cp/threads.1713389299.txt.gz · Last modified: 2024/04/17 23:28 by jkonczak
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