1 // RUN: %libomp-compile-and-run
2 // RUN: %libomp-run | %python %S/check.py -c 'CHECK' %s
3 
4 #include <stdio.h>
5 #include <stdlib.h>
6 #include <string.h>
7 #include <omp.h>
8 
9 #define XSTR(x) #x
10 #define STR(x) XSTR(x)
11 
12 #define streqls(s1, s2) (!strcmp(s1, s2))
13 
14 #define check(condition)                                                       \
15   if (!(condition)) {                                                          \
16     fprintf(stderr, "error: %s: %d: %s\n", __FILE__, __LINE__,                 \
17             STR(condition));                                                   \
18     exit(1);                                                                   \
19   }
20 
21 #if defined(_WIN32)
22 #define snprintf _snprintf
23 #endif
24 
25 #define BUFFER_SIZE 1024
26 
27 int main(int argc, char** argv) {
28   char buf[BUFFER_SIZE];
29   size_t needed, length;
30   const char* format = "tl:%L tn:%n nt:%N an:%a";
31   const char* second_format = "nesting_level:%{nesting_level} thread_num:%{thread_num} num_threads:%{num_threads} ancestor_tnum:%{ancestor_tnum}";
32 
33   length = strlen(format);
34   omp_set_affinity_format(format);
35 
36   needed = omp_get_affinity_format(buf, BUFFER_SIZE);
37   check(streqls(buf, format));
38   check(needed == length)
39 
40   // Check that it is truncated properly
41   omp_get_affinity_format(buf, 5);
42   check(streqls(buf, "tl:%"));
43 
44   #pragma omp parallel
45   {
46     char my_buf[512];
47     char supposed[512];
48     int tl, tn, nt, an;
49     size_t needed, needed2;
50     tl = omp_get_level();
51     tn = omp_get_thread_num();
52     nt = omp_get_num_threads();
53     an = omp_get_ancestor_thread_num(omp_get_level()-1);
54     needed = omp_capture_affinity(my_buf, 512, NULL);
55     needed2 = (size_t)snprintf(supposed, 512, "tl:%d tn:%d nt:%d an:%d", tl, tn, nt, an);
56     check(streqls(my_buf, supposed));
57     check(needed == needed2);
58     // Check that it is truncated properly
59     supposed[4] = '\0';
60     omp_capture_affinity(my_buf, 5, NULL);
61     check(streqls(my_buf, supposed));
62 
63     needed = omp_capture_affinity(my_buf, 512, second_format);
64     needed2 = (size_t)snprintf(supposed, 512, "nesting_level:%d thread_num:%d num_threads:%d ancestor_tnum:%d", tl, tn, nt, an);
65     check(streqls(my_buf, supposed));
66     check(needed == needed2);
67 
68     // Check that it is truncated properly
69     supposed[25] = '\0';
70     omp_capture_affinity(my_buf, 26, second_format);
71     check(streqls(my_buf, supposed));
72   }
73 
74   #pragma omp parallel num_threads(4)
75   {
76     omp_display_affinity(NULL);
77     omp_display_affinity(second_format);
78   }
79 
80   return 0;
81 }
82 
83 // CHECK: num_threads=4 tl:[0-9]+ tn:[0-9]+ nt:[0-9]+ an:[0-9]+
84 // CHECK: num_threads=4 nesting_level:[0-9]+ thread_num:[0-9]+ num_threads:[0-9]+ ancestor_tnum:[0-9]+
85