diff options
Diffstat (limited to 'src/tools/perf/util/util.c')
| -rw-r--r-- | src/tools/perf/util/util.c | 363 |
1 files changed, 0 insertions, 363 deletions
diff --git a/src/tools/perf/util/util.c b/src/tools/perf/util/util.c deleted file mode 100644 index 6d17b18..0000000 --- a/src/tools/perf/util/util.c +++ /dev/null @@ -1,363 +0,0 @@ -#include "../perf.h" -#include "util.h" -#include <sys/mman.h> -#ifdef BACKTRACE_SUPPORT -#include <execinfo.h> -#endif -#include <stdio.h> -#include <stdlib.h> - -/* - * XXX We need to find a better place for these things... - */ -unsigned int page_size; - -bool test_attr__enabled; - -bool perf_host = true; -bool perf_guest = false; - -char tracing_events_path[PATH_MAX + 1] = "/sys/kernel/debug/tracing/events"; - -void event_attr_init(struct perf_event_attr *attr) -{ - if (!perf_host) - attr->exclude_host = 1; - if (!perf_guest) - attr->exclude_guest = 1; - /* to capture ABI version */ - attr->size = sizeof(*attr); -} - -int mkdir_p(char *path, mode_t mode) -{ - struct stat st; - int err; - char *d = path; - - if (*d != '/') - return -1; - - if (stat(path, &st) == 0) - return 0; - - while (*++d == '/'); - - while ((d = strchr(d, '/'))) { - *d = '\0'; - err = stat(path, &st) && mkdir(path, mode); - *d++ = '/'; - if (err) - return -1; - while (*d == '/') - ++d; - } - return (stat(path, &st) && mkdir(path, mode)) ? -1 : 0; -} - -static int slow_copyfile(const char *from, const char *to) -{ - int err = 0; - char *line = NULL; - size_t n; - FILE *from_fp = fopen(from, "r"), *to_fp; - - if (from_fp == NULL) - goto out; - - to_fp = fopen(to, "w"); - if (to_fp == NULL) - goto out_fclose_from; - - while (getline(&line, &n, from_fp) > 0) - if (fputs(line, to_fp) == EOF) - goto out_fclose_to; - err = 0; -out_fclose_to: - fclose(to_fp); - free(line); -out_fclose_from: - fclose(from_fp); -out: - return err; -} - -int copyfile(const char *from, const char *to) -{ - int fromfd, tofd; - struct stat st; - void *addr; - int err = -1; - - if (stat(from, &st)) - goto out; - - if (st.st_size == 0) /* /proc? do it slowly... */ - return slow_copyfile(from, to); - - fromfd = open(from, O_RDONLY); - if (fromfd < 0) - goto out; - - tofd = creat(to, 0755); - if (tofd < 0) - goto out_close_from; - - addr = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fromfd, 0); - if (addr == MAP_FAILED) - goto out_close_to; - - if (write(tofd, addr, st.st_size) == st.st_size) - err = 0; - - munmap(addr, st.st_size); -out_close_to: - close(tofd); - if (err) - unlink(to); -out_close_from: - close(fromfd); -out: - return err; -} - -unsigned long convert_unit(unsigned long value, char *unit) -{ - *unit = ' '; - - if (value > 1000) { - value /= 1000; - *unit = 'K'; - } - - if (value > 1000) { - value /= 1000; - *unit = 'M'; - } - - if (value > 1000) { - value /= 1000; - *unit = 'G'; - } - - return value; -} - -int readn(int fd, void *buf, size_t n) -{ - void *buf_start = buf; - - while (n) { - int ret = read(fd, buf, n); - - if (ret <= 0) - return ret; - - n -= ret; - buf += ret; - } - - return buf - buf_start; -} - -size_t hex_width(u64 v) -{ - size_t n = 1; - - while ((v >>= 4)) - ++n; - - return n; -} - -static int hex(char ch) -{ - if ((ch >= '0') && (ch <= '9')) - return ch - '0'; - if ((ch >= 'a') && (ch <= 'f')) - return ch - 'a' + 10; - if ((ch >= 'A') && (ch <= 'F')) - return ch - 'A' + 10; - return -1; -} - -/* - * While we find nice hex chars, build a long_val. - * Return number of chars processed. - */ -int hex2u64(const char *ptr, u64 *long_val) -{ - const char *p = ptr; - *long_val = 0; - - while (*p) { - const int hex_val = hex(*p); - - if (hex_val < 0) - break; - - *long_val = (*long_val << 4) | hex_val; - p++; - } - - return p - ptr; -} - -/* Obtain a backtrace and print it to stdout. */ -#ifdef BACKTRACE_SUPPORT -void dump_stack(void) -{ - void *array[16]; - size_t size = backtrace(array, ARRAY_SIZE(array)); - char **strings = backtrace_symbols(array, size); - size_t i; - - printf("Obtained %zd stack frames.\n", size); - - for (i = 0; i < size; i++) - printf("%s\n", strings[i]); - - free(strings); -} -#else -void dump_stack(void) {} -#endif - -void get_term_dimensions(struct winsize *ws) -{ - char *s = getenv("LINES"); - - if (s != NULL) { - ws->ws_row = atoi(s); - s = getenv("COLUMNS"); - if (s != NULL) { - ws->ws_col = atoi(s); - if (ws->ws_row && ws->ws_col) - return; - } - } -#ifdef TIOCGWINSZ - if (ioctl(1, TIOCGWINSZ, ws) == 0 && - ws->ws_row && ws->ws_col) - return; -#endif - ws->ws_row = 25; - ws->ws_col = 80; -} - -static void set_tracing_events_path(const char *mountpoint) -{ - snprintf(tracing_events_path, sizeof(tracing_events_path), "%s/%s", - mountpoint, "tracing/events"); -} - -const char *perf_debugfs_mount(const char *mountpoint) -{ - const char *mnt; - - mnt = debugfs_mount(mountpoint); - if (!mnt) - return NULL; - - set_tracing_events_path(mnt); - - return mnt; -} - -void perf_debugfs_set_path(const char *mntpt) -{ - snprintf(debugfs_mountpoint, strlen(debugfs_mountpoint), "%s", mntpt); - set_tracing_events_path(mntpt); -} - -static const char *find_debugfs(void) -{ - const char *path = perf_debugfs_mount(NULL); - - if (!path) - fprintf(stderr, "Your kernel does not support the debugfs filesystem"); - - return path; -} - -/* - * Finds the path to the debugfs/tracing - * Allocates the string and stores it. - */ -const char *find_tracing_dir(void) -{ - static char *tracing; - static int tracing_found; - const char *debugfs; - - if (tracing_found) - return tracing; - - debugfs = find_debugfs(); - if (!debugfs) - return NULL; - - tracing = malloc(strlen(debugfs) + 9); - if (!tracing) - return NULL; - - sprintf(tracing, "%s/tracing", debugfs); - - tracing_found = 1; - return tracing; -} - -char *get_tracing_file(const char *name) -{ - const char *tracing; - char *file; - - tracing = find_tracing_dir(); - if (!tracing) - return NULL; - - file = malloc(strlen(tracing) + strlen(name) + 2); - if (!file) - return NULL; - - sprintf(file, "%s/%s", tracing, name); - return file; -} - -void put_tracing_file(char *file) -{ - free(file); -} - -int parse_nsec_time(const char *str, u64 *ptime) -{ - u64 time_sec, time_nsec; - char *end; - - time_sec = strtoul(str, &end, 10); - if (*end != '.' && *end != '\0') - return -1; - - if (*end == '.') { - int i; - char nsec_buf[10]; - - if (strlen(++end) > 9) - return -1; - - strncpy(nsec_buf, end, 9); - nsec_buf[9] = '\0'; - - /* make it nsec precision */ - for (i = strlen(nsec_buf); i < 9; i++) - nsec_buf[i] = '0'; - - time_nsec = strtoul(nsec_buf, &end, 10); - if (*end != '\0') - return -1; - } else - time_nsec = 0; - - *ptime = time_sec * NSEC_PER_SEC + time_nsec; - return 0; -} |