fix incomplete init
[picodrive.git] / platform / linux / pprof.c
... / ...
CommitLineData
1#include <stdio.h>
2#include <stdlib.h>
3#include <unistd.h>
4#include <sys/types.h>
5#include <sys/ipc.h>
6#include <sys/shm.h>
7
8#include <pico/pico_int.h>
9
10struct pp_counters *pp_counters;
11static int shmemid;
12
13void pprof_init(void)
14{
15 int this_is_new_shmem = 1;
16 key_t shmemkey;
17 void *shmem;
18
19#ifndef PPROF_TOOL
20 unsigned int tmp = pprof_get_one();
21 printf("pprof: measured diff is %u\n", pprof_get_one() - tmp);
22#endif
23
24 shmemkey = ftok(".", 0x02ABC32E);
25 if (shmemkey == -1)
26 {
27 perror("pprof: ftok failed");
28 return;
29 }
30
31#ifndef PPROF_TOOL
32 shmemid = shmget(shmemkey, sizeof(*pp_counters),
33 IPC_CREAT | IPC_EXCL | 0644);
34 if (shmemid == -1)
35#endif
36 {
37 shmemid = shmget(shmemkey, sizeof(*pp_counters),
38 0644);
39 if (shmemid == -1)
40 {
41 perror("pprof: shmget failed");
42 return;
43 }
44 this_is_new_shmem = 0;
45 }
46
47 shmem = shmat(shmemid, NULL, 0);
48 if (shmem == (void *)-1)
49 {
50 perror("pprof: shmat failed");
51 return;
52 }
53
54 pp_counters = shmem;
55 if (this_is_new_shmem) {
56 memset(pp_counters, 0, sizeof(*pp_counters));
57 printf("pprof: pp_counters cleared.\n");
58 }
59}
60
61void pprof_finish(void)
62{
63 shmdt(pp_counters);
64 shmctl(shmemid, IPC_RMID, NULL);
65}
66
67#ifdef PPROF_TOOL
68
69#define IT(n) { pp_##n, #n }
70static const struct {
71 enum pprof_points pp;
72 const char *name;
73} pp_tab[] = {
74 IT(main),
75 IT(frame),
76 IT(draw),
77 IT(sound),
78 IT(m68k),
79 IT(z80),
80 IT(msh2),
81 IT(ssh2),
82 IT(dummy),
83};
84
85int main(int argc, char *argv[])
86{
87 unsigned long long old[pp_total_points], new[pp_total_points];
88 int base = 0;
89 int l, i;
90
91 pprof_init();
92 if (pp_counters == NULL)
93 return 1;
94
95 if (argc >= 2)
96 base = atoi(argv[1]);
97
98 memset(old, 0, sizeof(old));
99 for (l = 0; ; l++)
100 {
101 if ((l & 0x1f) == 0) {
102 for (i = 0; i < ARRAY_SIZE(pp_tab); i++)
103 printf("%6s ", pp_tab[i].name);
104 printf("\n");
105 }
106
107 memcpy(new, pp_counters->counter, sizeof(new));
108 for (i = 0; i < ARRAY_SIZE(pp_tab); i++)
109 {
110 unsigned long long idiff = new[i] - old[i];
111 unsigned long long bdiff = (new[base] - old[base]) | 1;
112 printf("%6.2f ", (double)idiff * 100.0 / bdiff);
113 }
114 printf("\n");
115 memcpy(old, new, sizeof(old));
116
117 if (argc < 3)
118 break;
119 usleep(atoi(argv[2]));
120 }
121
122 return 0;
123}
124
125#endif // PPROF_TOOL
126