| 1 | #define _GNU_SOURCE |
| 2 | #include <stdio.h> |
| 3 | #include <string.h> |
| 4 | #include <dirent.h> |
| 5 | #include <sys/time.h> |
| 6 | #include <time.h> |
| 7 | #include <unistd.h> |
| 8 | #include <sys/mman.h> |
| 9 | |
| 10 | #include "../common/plat.h" |
| 11 | |
| 12 | |
| 13 | int plat_is_dir(const char *path) |
| 14 | { |
| 15 | DIR *dir; |
| 16 | if ((dir = opendir(path))) { |
| 17 | closedir(dir); |
| 18 | return 1; |
| 19 | } |
| 20 | return 0; |
| 21 | } |
| 22 | |
| 23 | int plat_get_root_dir(char *dst, int len) |
| 24 | { |
| 25 | extern char **g_argv; |
| 26 | int j; |
| 27 | |
| 28 | strncpy(dst, g_argv[0], len); |
| 29 | len -= 32; // reserve |
| 30 | if (len < 0) len = 0; |
| 31 | dst[len] = 0; |
| 32 | for (j = strlen(dst); j > 0; j--) |
| 33 | if (dst[j] == '/') { dst[j+1] = 0; break; } |
| 34 | |
| 35 | return j + 1; |
| 36 | } |
| 37 | |
| 38 | #ifdef __GP2X__ |
| 39 | /* Wiz has a borked gettimeofday().. */ |
| 40 | #define plat_get_ticks_ms plat_get_ticks_ms_good |
| 41 | #define plat_get_ticks_us plat_get_ticks_us_good |
| 42 | #endif |
| 43 | |
| 44 | unsigned int plat_get_ticks_ms(void) |
| 45 | { |
| 46 | struct timeval tv; |
| 47 | unsigned int ret; |
| 48 | |
| 49 | gettimeofday(&tv, NULL); |
| 50 | |
| 51 | ret = (unsigned)tv.tv_sec * 1000; |
| 52 | /* approximate /= 1000 */ |
| 53 | ret += ((unsigned)tv.tv_usec * 4195) >> 22; |
| 54 | |
| 55 | return ret; |
| 56 | } |
| 57 | |
| 58 | unsigned int plat_get_ticks_us(void) |
| 59 | { |
| 60 | struct timeval tv; |
| 61 | unsigned int ret; |
| 62 | |
| 63 | gettimeofday(&tv, NULL); |
| 64 | |
| 65 | ret = (unsigned)tv.tv_sec * 1000000; |
| 66 | ret += (unsigned)tv.tv_usec; |
| 67 | |
| 68 | return ret; |
| 69 | } |
| 70 | |
| 71 | void plat_sleep_ms(int ms) |
| 72 | { |
| 73 | usleep(ms * 1000); |
| 74 | } |
| 75 | |
| 76 | int plat_wait_event(int *fds_hnds, int count, int timeout_ms) |
| 77 | { |
| 78 | struct timeval tv, *timeout = NULL; |
| 79 | int i, ret, fdmax = -1; |
| 80 | fd_set fdset; |
| 81 | |
| 82 | if (timeout_ms >= 0) { |
| 83 | tv.tv_sec = timeout_ms / 1000; |
| 84 | tv.tv_usec = (timeout_ms % 1000) * 1000; |
| 85 | timeout = &tv; |
| 86 | } |
| 87 | |
| 88 | FD_ZERO(&fdset); |
| 89 | for (i = 0; i < count; i++) { |
| 90 | if (fds_hnds[i] > fdmax) fdmax = fds_hnds[i]; |
| 91 | FD_SET(fds_hnds[i], &fdset); |
| 92 | } |
| 93 | |
| 94 | ret = select(fdmax + 1, &fdset, NULL, NULL, timeout); |
| 95 | if (ret == -1) |
| 96 | { |
| 97 | perror("plat_wait_event: select failed"); |
| 98 | sleep(1); |
| 99 | return -1; |
| 100 | } |
| 101 | |
| 102 | if (ret == 0) |
| 103 | return -1; /* timeout */ |
| 104 | |
| 105 | ret = -1; |
| 106 | for (i = 0; i < count; i++) |
| 107 | if (FD_ISSET(fds_hnds[i], &fdset)) |
| 108 | ret = fds_hnds[i]; |
| 109 | |
| 110 | return ret; |
| 111 | } |
| 112 | |
| 113 | void *plat_mmap(unsigned long addr, size_t size) |
| 114 | { |
| 115 | void *req, *ret; |
| 116 | |
| 117 | req = (void *)addr; |
| 118 | ret = mmap(req, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); |
| 119 | if (ret == MAP_FAILED) |
| 120 | return NULL; |
| 121 | if (ret != req) |
| 122 | printf("warning: mmaped to %p, requested %p\n", ret, req); |
| 123 | |
| 124 | return ret; |
| 125 | } |
| 126 | |
| 127 | void *plat_mremap(void *ptr, size_t oldsize, size_t newsize) |
| 128 | { |
| 129 | void *ret; |
| 130 | |
| 131 | ret = mremap(ptr, oldsize, newsize, MREMAP_MAYMOVE); |
| 132 | if (ret == MAP_FAILED) |
| 133 | return NULL; |
| 134 | if (ret != ptr) |
| 135 | printf("warning: mremap moved: %p -> %p\n", ptr, ret); |
| 136 | |
| 137 | return ret; |
| 138 | } |
| 139 | |
| 140 | void plat_munmap(void *ptr, size_t size) |
| 141 | { |
| 142 | munmap(ptr, size); |
| 143 | } |
| 144 | |